Seat frame structure

Abstract

The invention relates to the field of seats, and particularly discloses a seat frame structure which comprises a seat basin assembly and a backrest assembly, a first supporting leg and a second supporting leg are rotationally connected with a seat cushion framework, a first connecting piece is arranged on the seat cushion framework, and an angle adjusting assembly drives the seat basin assembly to be folded and unfolded. One end of the third supporting leg and one end of the fourth supporting leg rotate on the backrest support in a limited mode, the first fixing piece and the second connecting piece are arranged on the backrest support, the first fixing piece and the first connecting piece are dynamically coupled, the second connecting piece is provided with a second fixing piece which is dynamically coupled, and the second fixing piece is arranged on the ground or a sliding rail. The first fixing piece and the first connecting piece which can realize dynamic coupling are arranged between the backrest assembly and the seat basin assembly, so that one angle driving element assembly can execute two seat postures, an actuator driving structure is simplified, a plurality of synchronous connecting parts are reduced, and the structural cost is saved.

Description

Technical Field

[0001] This invention relates to the field of seating, and particularly to seating structures. Background Technology

[0002] Multifunctional seats are increasingly used in vehicles, aiming to provide passengers with a more scenario-based experience, enrich their riding experience, and improve comfort. However, currently, most multifunctional seats, due to their multifunctional characteristics, have to use a large number of drive actuators, resulting in complex internal structures and high structural costs.

[0003] The technical problem to be solved by this application is: how to simplify the structure while retaining the multifunctionality of the seat. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a seat frame structure.

[0005] The technical solution adopted in this invention is as follows: a seat frame structure, including a seat basin assembly and a backrest assembly. The seat basin assembly includes a first support leg, a seat cushion frame, a second support leg, a first connector, and an angle adjustment assembly. The first support leg and the second support leg are rotatably connected to the seat cushion frame, and the first connector is disposed on the seat cushion frame. The angle adjustment assembly drives the seat basin assembly to fold and unfold. The backrest assembly includes a backrest bracket, a third support leg, a fourth support leg, a first fixing member, and a second connector. One end of the third support leg and one end of the fourth support leg are respectively limited to rotation on the backrest bracket. The first fixing member and the second connector are disposed on the backrest bracket. The first fixing member and the first connector are dynamically coupled. The second connector is provided with a dynamically coupled second fixing member. The second fixing member is disposed on the ground or a slide rail.

[0006] In some embodiments, the seat cushion frame is provided with a connecting locking channel, which is fixedly installed on the seat cushion frame. One end of the first connector slides at the upper limit of the connecting locking channel, and the other end is dynamically coupled to the first fixing member.

[0007] In some embodiments, a slide rail is included, on which the seat assembly and backrest assembly are disposed. The slide rail includes a main rail and a sub-rail, with the sub-rail sliding at an upper limit on the main rail.

[0008] In some embodiments, one end of the first support leg rotates at the upper limit of the subrail, one end of the third support leg and one end of the fourth support leg rotate at the upper limit of the subrail respectively, and the second fixing member is disposed on the subrail.

[0009] In some embodiments, a connecting crossbar and a connecting bracket are provided between the two backrest supports. The two ends of the connecting crossbar are fixedly connected to the corresponding backrest supports, and the connecting bracket is fixedly connected to the connecting crossbar.

[0010] In some implementations, one end of the second support leg is rotatably connected to the connecting bracket.

[0011] In some implementations, the third support legs are connected by a synchronizing rod.

[0012] In some implementations, the length of the fourth support leg is greater than the length of the third support leg.

[0013] The beneficial effects of this invention are as follows:

[0014] This seat frame structure, by setting a first fixing member and a first connecting member that can achieve dynamic coupling between the backrest assembly and the seat assembly, switches the connection relationship between the backrest assembly and the seat assembly. Thus, the angle driving element can not only drive the seat assembly to fold and unfold, but also drive the backrest assembly to flip through the seat assembly. Ultimately, one angle driving element can perform two seat postures. This invention simplifies the actuator driving structure and reduces many synchronous connecting parts, thereby greatly saving structural costs while achieving multiple functions. Attached Figure Description

[0015] Figure 1 This is a simplified structural diagram of Example 1;

[0016] Figure 2 This is a schematic diagram of the structure of Example 1 in State 1;

[0017] Figure 3 This is a schematic diagram of the structure of Example 1 in state two;

[0018] Figure 4 This is a schematic diagram of the structure of Example 2;

[0019] Figure 5 This is a schematic cross-sectional view of the structure in Example 2;

[0020] Figure 6 This is a side view of the structure of Example 2 in a normal sitting posture.

[0021] Figure 7 This is a side view of the structure of Example 2 with the seat folded.

[0022] Figure 8 This is a side view of the structure of Example 2 with the seat folded down.

[0023] The labels and names in the diagram correspond as follows: 1. Seat assembly; 2. Backrest assembly; 3. Slide rail; 11. First support leg; 12. Seat cushion frame; 13. Second support leg; 14. First connector; 16. Connecting lock track; 21. Movable backrest; 22. Backrest bracket; 23. Third support leg; 24. Fourth support leg; 25. First fixing component; 26. Second connector; 27. Second fixing component; 28. Synchronizing rod; 221. Connecting crossbar; 222. Connecting bracket; 31. Sub-rail; 32. Main rail. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This invention provides two technical solutions:

[0026] Example 1

[0027] Please see Figure 1 A seat frame structure, mounted on the ground or a slide rail 3, includes a seat basin assembly 1 and a backrest assembly 2. The seat basin assembly 1 includes a first support leg 11, a seat cushion frame 12, a second support leg 13, a first connector 14, and an angle adjustment assembly. The first support leg 11 and the second support leg 13 are rotatably connected to the seat cushion frame 12. Specifically, one end of the first support leg 11 is rotatably connected to the front end of the seat cushion frame 12, and one end of the second support leg 13 is rotatably connected to the rear end of the seat cushion frame 12. The first connector 14 is mounted on the seat cushion frame 12.

[0028] The backrest assembly 2 includes a movable backrest 21, a backrest support 22, a third support leg 23, a fourth support leg 24, a first fixing member 25, and a second connecting member 26. The movable backrest 21 rotates at its upper limit on the backrest support 22. One end of the third support leg 23 rotates at its upper limit on the backrest support 22, and the other end rotates at its upper limit on the ground or the slide rail 3. One end of the fourth support leg 24 rotates at its upper limit on the backrest support 22, and the other end rotates at its upper limit on the ground or the slide rail 3. The other end of the second support leg 23 rotates at its upper limit on the backrest support 22. The first fixing member 25 and the second connecting member 26 are mounted on the backrest support 22. The first fixing member 25 and the first connecting member 24 are dynamically coupled, and even when coupled, the angle between the first connecting member 14 and the first fixing member 25 still changes. The second connecting member 26 has a dynamically coupled second fixing member 27, which is mounted on the ground or the slide rail 3.

[0029] The first support leg 11, the seat frame 12, and the second support leg 13 in the seat assembly 1 form a linkage structure. The angle adjustment component drives the seat assembly 1 to fold and unfold. The angle adjustment component can be set at the position in the seat assembly 1 where the angle changes, specifically including the connection position between the first support leg 11 and the seat frame 12, the connection position between the first support leg 11 and the ground or the slide rail 3, the connection position between the second support leg 13 and the seat frame 12, and the connection position between the second support leg 13 and the backrest support 22.

[0030] Status 1: Please refer to Figure 2 When the first connector 14 and the first fixing member 25 are decoupled, the seat assembly 1 and the backrest assembly 2 move separately. The seat assembly 1 is driven by the angle adjustment component to fold, and the movable backrest 21 can be flipped to lie flat.

[0031] Status 2: Please refer to Figure 3 When the first connector 14 and the first fixing member 25 are coupled, the seat assembly 1 and the backrest assembly 2 move as a whole. When the second connector 26 and the second fixing member 27 are decoupled, the angle adjustment component drives the seat assembly 1 to fold. For the backrest assembly 2, the seat assembly 1 acts as its power source. The seat assembly 1 pulls the backrest assembly 2 forward, and the rear end of the backrest assembly 2 is lifted off the ground or the slide rail 3. The third support foot 23 and the fourth support foot 24 provide support for the backrest assembly 2, thereby realizing the flipping of the backrest assembly 2.

[0032] Therefore, in this embodiment, a driving element can serve as a power source for two seat postures, and the cooperation between the first connector 14 and the first fixing member 25, combined with the cooperation between the second connector 26 and the second fixing member 27, can quickly switch the seat mode and complete the seat posture change in conjunction with the driving element.

[0033] In practical applications, when the seat is in state one, the seat cushion frame 12 can be folded downward and forward to facilitate the flipping of the movable backrest 21; when the seat is in state two, the component backrest can be flipped forward to facilitate passengers to enter from the rear of the seat, which is the easy-entry mode.

[0034] In practical solutions, the angle adjustment component refers to a single driving element or combination of elements that can achieve angle adjustment, such as a motor-driven gear plate or a motor-driven angle adjuster. This is existing technology and is not shown in the figure.

[0035] Example 2

[0036] In this embodiment, please refer to Figure 4-6The pot seat assembly 1 and the backrest assembly 2 are mounted on a slide rail 3, which includes a main rail 32 and a sub-rail 31. The sub-rail 31 slides at its upper limit on the main rail 32. In the pot seat assembly 1, one end of the first support leg 11 rotates at its upper limit on the sub-rail 31. In the backrest assembly 2, one end of the third support leg 23 rotates at its upper limit on the sub-rail 31, and one end of the fourth support leg 24 rotates at its upper limit on the sub-rail 31. A second fixing member 27 is mounted on the sub-rail 31.

[0037] A connecting crossbar 221 and a connecting bracket 222 are provided between the two backrest supports 22. The two ends of the connecting crossbar 221 are fixedly connected to the corresponding backrest supports 22, and the connecting bracket 222 is fixedly connected to the connecting crossbar 221. One end of the second support foot 13 is rotatably connected to the backrest support 22 via the connecting bracket 222. Specifically, one end of the second support foot 13 is rotatably connected to the connecting bracket 222, and the other end is connected to the seat cushion frame 12 via a connecting rod. In this embodiment, the angle adjustment component is specifically a combination of a motor and an angle adjuster, and the angle adjustment component is located at the connection position between the second support foot 13 and the connecting bracket 222.

[0038] The first connector 14 is a locking hook, the first fixing member 25 is a locking buckle, and the second connector 26 and the second fixing member 27 are existing structures that can achieve locking function when installed on the slide rail 3.

[0039] In order for the two sides of the seat to flip synchronously, in this embodiment, preferably, the third support legs 23 are connected by a synchronizing rod 28.

[0040] In order to absorb the overall manufacturing size fluctuations and assembly errors of the seat, in this embodiment, preferably, the seat cushion frame 12 is provided with a connecting lock channel 16, the connecting lock channel 16 is fixedly installed on the seat cushion frame 12, one end of the first connector 14 slides at the upper limit of the connecting lock channel 16, and the other end is dynamically coupled to the first fixing member 25.

[0041] To facilitate seat flipping, the length of the fourth support leg 24 is greater than the length of the third support leg 23.

[0042] Seat folding position: Please refer to Figure 7 When the first connector 14 and the first fixing member 25 are decoupled, the seat assembly 1 and the backrest assembly 2 move separately. The seat assembly 1 is driven by the angle adjustment component to fold. The first support leg 11 rotates around the connection point with the subrail 31, and the second support leg 13 rotates around the connection point with the connecting bracket 222. The seat cushion moves forward and downward, exposing space for the movable backrest 21 to flip up and lie flat on the seat cushion.

[0043] Seat folding position: Please refer to Figure 8When the first connector 14 and the first fixing member 25 are coupled, the seat assembly 1 and the backrest assembly 2 move as a whole. When the second connector 26 and the second fixing member 27 are decoupled, the angle adjustment component drives the seat assembly 1 to fold. For the backrest assembly 2, the seat assembly 1 acts as its power source. The seat assembly 1 pulls the backrest assembly 2 forward, and the rear end of the backrest assembly 2 is lifted off the ground or the slide rail 3. The third support leg 23 and the fourth support leg 24 provide support for the backrest assembly 2, thereby realizing the flipping of the backrest assembly 2. The first connector 14 slides on the connecting lock 16. Since the fourth support leg 24 is longer than the third support leg 23, the seat as a whole tilts forward.

[0044] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A seat frame structure comprising a seat pan assembly (1) and a backrest assembly (2), characterized in that, The seat pot assembly (1) comprises a first supporting leg (11), a seat cushion framework (12), a second supporting leg (13), a first connecting piece (14) and an angle adjusting assembly, the first supporting leg (11) and the second supporting leg (13) are respectively rotatably connected with the seat cushion framework (12), the first connecting piece (14) is arranged on the seat cushion framework (12), the angle adjusting assembly drives the seat pot assembly (1) to fold and unfold, the backrest assembly (2) comprises a backrest support (22), a third supporting leg (23), a fourth supporting leg (24), a first fixing piece (25) and a second connecting piece (26), one end of the third supporting leg (23) and one end of the fourth supporting leg (24) are respectively rotatably limited in the backrest support (22), the first fixing piece (25) and the second connecting piece (26) are arranged on the backrest support (22), the first fixing piece (25) is dynamically coupled with the first connecting piece (14), the second connecting piece (26) is provided with a second fixing piece (27) which is dynamically coupled, and the second fixing piece (27) is arranged on the ground or a slide rail (3).

2. A seat frame structure according to claim 1, wherein The seat cushion framework (12) is provided with a connecting lock channel (16), the connecting lock channel (16) is fixedly arranged on the seat cushion framework (12), one end of the first connecting piece (14) is limitedly slid on the connecting lock channel (16), and the other end is dynamically coupled with the first fixing piece (25).

3. A seat frame structure according to claim 1, wherein The slide rail (3) is arranged on the slide rail (3), the slide rail (3) comprises a female rail (32) and a male rail (31), and the male rail (31) is limitedly slid on the female rail (32).

4. A seat frame structure according to claim 3, wherein One end of the first supporting leg (11) is rotatably limited on the male rail (31), one end of the third supporting leg (23) and one end of the fourth supporting leg (24) are respectively rotatably limited on the male rail (31), and the second fixing piece (27) is arranged on the male rail (31).

5. The seat frame structure of claim 1, wherein The two backrest supports (22) are provided with a connecting cross rod (221) and a connecting support (222), the connecting cross rod (221) is fixedly connected with the corresponding backrest support (22) at both ends, and the connecting support (222) is fixedly connected with the connecting cross rod (221).

6. A seat frame structure according to claim 5, wherein One end of the second supporting leg (13) is rotatably connected with the connecting support (222).

7. The seat frame structure of claim 1, wherein The third supporting legs (23) are connected through a synchronous rod (28).

8. The seat frame structure of claim 1, wherein The length of the fourth supporting leg (24) is greater than that of the third supporting leg (23).

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