Seat backrest folding mechanism

Abstract

The utility model relates to a seat backrest folding mechanism which is characterized in that a manual angle adjuster and an electric angle adjuster are fixedly connected together through a connecting plate, a manual synchronizing rod is sleeved on a connecting shaft rod and is connected with the manual angle adjuster, and a first manual synchronizing rod and a second manual synchronizing rod are fixedly connected through the connecting shaft rod so as to realize synchronous unlocking of the first manual angle adjuster and the second manual angle adjuster. The electric synchronous rod can freely and rotatably sleeve the connecting shaft rod and is connected with the electric recliner; and the first electric synchronous rod and the second electric synchronous rod are fixedly connected so as to realize synchronous rotation of the first electric recliner and the second electric recliner. According to the seat backrest folding mechanism, the electric angle adjuster and the manual angle adjuster are directly and fixedly combined through the connecting plate, the electric comfort adjusting function of the seat backrest is achieved through synchronous rotation of the electric angle adjuster, synchronous unlocking of the manual angle adjuster is achieved through the penetrating connecting shaft rod, and a seat is folded forwards; and the rapid entering and escaping space is improved.

Description

Technical Field

[0001] The utility model relates to a car seat, and more particularly to a seat back folding mechanism. Background Art

[0002] A seat recliner connects the seat and back of a car seat to enhance comfort. Passengers can adjust the seat back angle to the optimal position for the most comfortable and comfortable seating position. For the driver, adjusting the seat back angle allows for optimal visibility and easy access to controls such as the steering wheel, pedals, and gear lever.

[0003] Electric recliners are known to continuously adjust the seat back angle, while manual recliners allow for discontinuous and rapid folding of the seat back. To combine the advantages of manual electric recliners, namely continuous adjustment and rapid folding of the seat back, conventional combined recliners typically separate and integrate some of the core components of the electric and manual recliners. This results in a complex structure, cumbersome assembly, and high cost. Utility Model Content

[0004] In order to solve the high cost problem in the above-mentioned prior art, the utility model provides a seat back folding mechanism.

[0005] According to the seat back folding mechanism of the utility model, it includes a first manual angle adjuster, a first electric angle adjuster, a first connecting plate, a second manual angle adjuster, a second electric angle adjuster, a second connecting plate, a first manual synchronization rod, a second manual synchronization rod, a connecting rod, a first electric synchronization rod and a second electric synchronization rod, wherein the first manual angle adjuster and the first electric angle adjuster are fixedly connected together through the first connecting plate, the second manual angle adjuster and the second electric angle adjuster are fixedly connected together through the second connecting plate, the first manual synchronization rod is sleeved on the connecting rod and connected to the first manual angle adjuster, the second manual synchronization rod is sleeved on the connecting rod and connected to the second manual angle adjuster, the first and second manual synchronization rods are fixedly connected through the connecting rod to realize synchronous unlocking of the first and second manual angle adjusters, the first electric synchronization rod can be freely rotatably sleeved on the connecting rod and connected to the first electric angle adjuster, the second electric synchronization rod can be freely rotatably sleeved on the connecting rod and connected to the second electric angle adjuster, and the first and second electric synchronization rods are fixedly connected to realize synchronous rotation of the first and second electric angle adjusters.

[0006] In a preferred embodiment, the first and second manual recliners are located on the outside, and the first and second electric recliners are located on the inside.

[0007] In a preferred embodiment, the first and second manual recliners are respectively installed on opposite sides of the seat cushion on the outside through the seat cushion connecting plate, and the first and second electric recliners are respectively installed on opposite sides of the seat back on the inside through the backrest side panels.

[0008] In a preferred embodiment, the first manual recliner and the first electric recliner are respectively welded and fixed on opposite sides of the first connecting plate, and the second electric recliner and the second manual recliner are respectively welded and fixed on opposite sides of the second connecting plate.

[0009] In a preferred embodiment, the first and second manual synchronization rods are fixed to opposite sides of the connecting rod by riveting or welding.

[0010] In a preferred embodiment, the seat back folding mechanism further comprises a coupling rotatably sleeved on the connecting rod, and the first and second electric synchronization rods are fixedly connected via the coupling.

[0011] In a preferred embodiment, the first and second electric synchronous rods are fixed by welding.

[0012] In a preferred embodiment, the first electric synchronous rod is formed with a first flange, the second electric synchronous rod is formed with a second flange, and the first flange and the second flange are fixed by welding.

[0013] In a preferred embodiment, the seat back folding mechanism further includes a silencer element sleeved on the connecting rod.

[0014] In a preferred embodiment, the toothed plates of the first and second manual recliners are fixedly connected to the outer toothed plates of the first and second electric recliners via first and second connecting plates, respectively.

[0015] According to the seat back folding mechanism of the present invention, the electric recliner and the manual recliner are directly fixed together through a connecting plate, the electric comfort adjustment function of the seat back is realized by the synchronous rotation of the electric recliner, and the forward flipping function of the seat back is realized by the synchronous unlocking of the manual recliner through the penetrating connecting rod, thereby folding the seat forward and increasing the space for quick entry and escape. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a seat back folding mechanism according to a preferred embodiment of the present utility model.

[0017] Figure 2 yes Figure 1 sectional view of .

[0018] Figure 3 yes Figure 1 Schematic diagram of the assembly structure of the first adjuster component.

[0019] Figure 4 yes Figure 1 Schematic diagram of the assembly process of the first adjuster component.

[0020] Figure 5 yes Figure 1 Schematic diagram of the assembly structure of the second adjuster component.

[0021] Figure 6 yes Figure 1 Exploded view of the connecting rod assembly.

[0022] Figure 7 It is a schematic diagram of the overall structure of a seat back folding mechanism according to another preferred embodiment of the present utility model.

[0023] Figure 8 It is a schematic diagram of the overall structure of a seat back folding mechanism according to another preferred embodiment of the present utility model.

[0024] Figure 9 yes Figure 8 Schematic diagram of the structure of the connecting rod and silencer element. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings and described in detail.

[0026] like Figure 1 As shown, the seat back folding mechanism according to a preferred embodiment of the present utility model includes a first double recliner assembly 1, a second double recliner assembly 2 and a synchronous sleeve rod assembly 3, wherein the first double recliner assembly 1 is installed on the left side of the seat back through the first seat cushion connecting plate 1a and the first backrest side plate 1b, the second double recliner assembly 2 is installed on the right side of the seat back through the second seat cushion connecting plate 2a and the second backrest side plate 2b, and the first double recliner assembly 1 and the second double recliner assembly 2 are connected by the synchronous sleeve rod assembly 3.

[0027] like Figure 1-Figure 3 As shown, the first double recliner assembly 1 includes a first manual recliner 11, a first electric recliner 12 and a first connecting plate 13, wherein the left side of the first manual recliner 11 is installed on the left outer side of the seat through the first seat cushion connecting plate 1a, and the right side of the first electric recliner 12 is installed on the left inner side of the seat through the first backrest side plate 1b, and the right side of the first manual recliner 11 and the left side of the first electric recliner 12 are fixedly connected together through the first connecting plate 13. In this embodiment, the first manual recliner 11 and the first electric recliner 12 are welded and fixed to the left and right sides of the first connecting plate 13 respectively. Figure 4As shown, the specific assembly process includes first fixing the right side of the first connecting plate 13 to the outer tooth plate 121 on the left side of the first electric angle adjuster 12 by laser welding in a full circle, and then fixing the left side of the first connecting plate 13 to the tooth plate 111 on the right side of the first manual angle adjuster 11 by laser welding in a full circle.

[0028] like Figure 1-Figure 2 and Figure 5 As shown, the second dual recliner assembly 2 includes a second manual recliner 21, a second electric recliner 22, and a second connecting plate 23. The right side of the second manual recliner 21 is mounted on the right outer side of the seat via the second seat cushion connecting plate 2a, and the left side of the second electric recliner 22 is mounted on the right inner side of the seat via the second backrest side plate 2b. The left side of the second manual recliner 21 and the right side of the second electric recliner 22 are fixedly connected together via the second connecting plate 23. In this embodiment, the second electric recliner 22 and the second manual recliner 21 are welded to the left and right sides of the second connecting plate 23, respectively.

[0029] like Figure 1-Figure 2 and Figure 6 As shown, the synchronization rod assembly 3 includes a first manual synchronization rod 31, a second manual synchronization rod 32, a connecting rod 33, a first electric synchronization rod 34, a second electric synchronization rod 35 and a coupling 36, wherein the first manual synchronization rod 31 is sleeved on the left end of the connecting rod 33 and connected to the first manual angle adjuster 11, the second manual synchronization rod 32 is sleeved on the right end of the connecting rod 33 and connected to the second manual angle adjuster 21, and the first manual synchronization rod 31 and the second manual synchronization rod 32 are fixedly connected by the connecting rod 33 to achieve To synchronously unlock the first manual recliner 11 and the second manual recliner 21, a first electric synchronization rod 34 is rotatably mounted on the connecting rod 33 and connected to the first electric recliner 12. A second electric synchronization rod 35 is rotatably mounted on the connecting rod 33 and connected to the second electric recliner 22. The first and second electric synchronization rods 34, 35 are fixedly connected via a coupling 36, which is also mounted on the connecting rod 33, to achieve synchronous rotation of the first and second electric recliners 12, 22. In this embodiment, the first and second manual synchronization rods 31, 32 are riveted to the left and right ends of the connecting rod 33, respectively. When the left end is unlocked, the right end is simultaneously unlocked via the connecting rod 33. The right end of the first electric synchronization rod 34 and the left end of the second electric synchronization rod 35 are riveted together via the coupling 36.

[0030] In another embodiment, the intermediate coupling and riveting process are eliminated and welding is used instead, such as Figure 7As shown, the first manual synchronization rod 31a and the second manual synchronization rod 32a are respectively welded to the left and right ends of the connecting rod, and the right end of the first electric synchronization rod 34a and the left end of the second electric synchronization rod 35a are welded together. In particular, a first flange 341 is formed on the right end of the first electric synchronization rod 34a, and a second flange 351 is formed on the left end of the second electric synchronization rod 35a. The welding of the first flange 341 and the second flange 351 secures the first electric synchronization rod 34a and the second electric synchronization rod 35a to the connecting rod, preventing accidental welding to the connecting rod when the flange is not welded.

[0031] In another embodiment, the synchronization sleeve rod assembly 3 further includes a silencer element 37, such as Figure 8-Figure 9 As shown, the silencer element 37 is a sleeve structure sleeved on the connecting rod 33, which is respectively matched with the left and right electric synchronization rods. It should be understood that the silencer element 37 can be a silencer felt, a plastic sleeve or a rubber sleeve.

[0032] According to the seat back folding mechanism of the present invention, the electric recliners 12, 22 and the manual recliners 11, 21 are welded together by connecting plates 13, 23. The electric recliners 12, 22 rotate synchronously to realize the electric comfort adjustment function of the seat back, and the manual recliners 11, 21 are unlocked synchronously to realize the forward flipping function of the seat back, thereby folding the seat forward and increasing the space for quick entry and escape.

[0033] In particular, the seat back folding mechanism of the present invention has manual recliners 11, 21 located on the outside, and synchronized unlocking of these recliners 11, 21 is achieved through a through-connecting connecting rod 33, resulting in a simple and ingenious structure. If manual recliners 11, 21 were located on the inside, synchronized unlocking of the electric recliners 12, 22 on the outside would require the structure of the manual recliners 11, 21 to be destroyed.

[0034] According to the seat back folding mechanism of the present invention, there is no need to separate the electric recliner and the manual recliner. Instead, the mass-produced commercially available electric recliner and the manual recliner can be directly fixed together through a connecting plate. There is no need to redesign the development platform, which greatly reduces the development cost. In addition, the structure is simple and easy to assemble, and it can be modularly applied to various scenarios. Moreover, by selecting electric recliners and manual recliners of different strength levels, the seat back folding requirements of different strengths can be met, thereby modularly adapting to seat back frames of different widths.

[0035] Compared with the existing technology that realizes the dual recliner function by splitting and integrating the core components of the manual and electric recliners, the utility model can increase the forward flipping angle of the backrest after unlocking by optionally matching a manual recliner that can achieve large-angle folding, for example, from the original 80° to 150°, thereby meeting the large-angle folding requirements.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Various modifications are possible to the above embodiments of the present invention. In other words, any simple, equivalent changes and modifications made in accordance with the claims and description of the present invention fall within the scope of protection of the present invention. Anything not fully described in this invention represents conventional technology.

Claims

1. A seat back folding mechanism, characterized in that: The seat back folding mechanism includes a first manual angle adjuster, a first electric angle adjuster, a first connecting plate, a second manual angle adjuster, a second electric angle adjuster, a second connecting plate, a first manual synchronization rod, a second manual synchronization rod, a connecting rod, a first electric synchronization rod and a second electric synchronization rod, wherein the first manual angle adjuster and the first electric angle adjuster are fixedly connected together through the first connecting plate, the second manual angle adjuster and the second electric angle adjuster are fixedly connected together through the second connecting plate, the first manual synchronization rod is sleeved on the connecting rod and connected to the first manual angle adjuster, the second manual synchronization rod is sleeved on the connecting rod and connected to the second manual angle adjuster, the first and second manual synchronization rods are fixedly connected through the connecting rod to realize synchronous unlocking of the first and second manual angle adjusters, the first electric synchronization rod can be freely rotatably sleeved on the connecting rod and connected to the first electric angle adjuster, the second electric synchronization rod can be freely rotatably sleeved on the connecting rod and connected to the second electric angle adjuster, and the first and second electric synchronization rods are fixedly connected to realize synchronous rotation of the first and second electric angle adjusters.

2. The seat back folding mechanism according to claim 1, characterized in that: The first and second manual recliners are located on the outside, and the first and second electric recliners are located on the inside.

3. The seat back folding mechanism according to claim 2, characterized in that: The first and second manual recliners are respectively installed on opposite sides of the seat cushion on the outside through the cushion connecting plate, and the first and second electric recliners are respectively installed on opposite sides of the seat back on the inside through the backrest side plates.

4. The seat back folding mechanism according to claim 1, characterized in that: The first manual angle adjuster and the first electric angle adjuster are respectively welded and fixed on opposite sides of the first connecting plate, and the second electric angle adjuster and the second manual angle adjuster are respectively welded and fixed on opposite sides of the second connecting plate.

5. The seat back folding mechanism according to claim 1, characterized in that: The first and second manual synchronization rods are respectively riveted or welded to the opposite sides of the connecting rod.

6. The seat back folding mechanism according to claim 1, characterized in that: The seat back folding mechanism further comprises a coupling which is freely rotatably sleeved on the connecting rod, and the first and second electric synchronous rods are fixedly connected via the coupling.

7. The seat back folding mechanism according to claim 1, characterized in that: The first and second electric synchronous rods are fixed by welding.

8. The seat back folding mechanism according to claim 7, characterized in that: The first electric synchronous rod is formed with a first flange, and the second electric synchronous rod is formed with a second flange. The first flange and the second flange are fixed by welding.

9. The seat back folding mechanism according to claim 1, characterized in that: The seat back folding mechanism further comprises a silencer element sleeved on the connecting rod.

10. The seat back folding mechanism according to claim 1, characterized in that: The tooth plates of the first and second manual recliners are fixedly connected to the outer tooth plates of the first and second electric recliners through first and second connecting plates respectively.

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