Seat frame mounting structure

Abstract

The utility model discloses a seat frame installation structure which comprises a base support, a seat frame framework is arranged above the base support, a first connecting rod and a second connecting rod are arranged between the seat frame framework and the base support, and the two ends of the first connecting rod are rotationally connected to the front end of the seat frame framework and the base support respectively. Two ends of the second connecting rod are rotationally connected to the rear end of the seat framework and the base bracket respectively; a first locking assembly is arranged at the position, corresponding to the rotating connection position of the second connecting rod, of the seat frame framework, and the first locking assembly is used for enabling the seat frame framework to be switched between keeping the rotating connection with the second connecting rod and releasing the connection with the second connecting rod; a second locking assembly is arranged between the first connecting rod and the base support and used for enabling the first connecting rod to be switched between the rotating connection state and the fixed connection state of the first connecting rod and the base support. A driving mechanism is arranged between the seat frame skeleton and the first connecting rod and used for driving the seat frame skeleton to rotate relative to the first connecting rod. The utility model has the beneficial effect that the overturning and forward moving functions of the seat cushion can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a seat frame installation structure. Background Art

[0002] At present, with the increasing demand for long-distance travel and camping, users have higher and higher requirements for the comfort of resting in the car. Therefore, relevant companies are actively deploying technologies that can directly transform seats into beds. The current concept is mainly to set the backrest into a double-layer structure. By flipping the seat cushion forward 180 degrees, the backrest is folded forward as a whole and flush with the flipped seat cushion, and then the upper backrest is flipped backward and unfolded 180 degrees to expand the bed area, thereby ensuring the comfort and ease of operation after the seat is transformed into a bed.

[0003] To meet the assembly requirements of the double-layer backrest, the intersection of the backrest's lower end and the rear end of the seat cushion is designed to be relatively compact. This creates structural interference when adjusting the backrest's recline angle during normal seat use. Therefore, in this development process, the seat cushion not only needed to be able to flip forward relative to the base, but also needed to be able to adjust its position forward. This allowed the rear end of the cushion to be free of obstruction and prevent backrest recline adjustment when in a seated position.

[0004] Therefore, it is urgent to design a seat frame installation method that can realize the seat cushion flipping and forward movement functions. Utility Model Content

[0005] In view of this, the present invention provides a seat frame installation structure to meet the technical requirements proposed by the background technology.

[0006] To achieve the above purpose, the technical solution of this utility model is as follows:

[0007] The cam is secured to the chassis and has a first end secured thereto, the second end secured to the chassis and having a first latch, wherein the first latch is secured to the chassis and has a second latch for latching the chassis.

[0008] A driving mechanism is provided between the seat frame frame and the first connecting rod, and the driving mechanism is used to drive the seat frame frame to rotate relative to the first connecting rod.

[0009] Preferably, a latch is fixedly provided at the upper end of the second connecting rod and extends toward the first locking assembly, and the first locking assembly can lock the latch or release the latch.

[0010] Preferably: the second locking assembly includes a locking frame fixed on the base bracket, a locking rod located above the locking frame, and a zipper connected between the locking frame and the locking rod, the lower end of the first connecting rod is rotatably connected to the locking frame, the middle part of the locking rod is rotatably connected to the first connecting rod, one end of the locking frame is provided with a locking notch, one end of the locking rod has a clamping portion adapted to the locking notch, and the zipper is used to clamp the clamping portion in the locking notch, or to move the clamping portion upward away from the locking notch.

[0011] Preferably, the distal end of the zipper is connected to a manual traction mechanism or an electric traction device.

[0012] Preferably, the first connecting rod, the second connecting rod and the first locking assembly are each provided in two groups, and correspond one to one, the two groups of the first connecting rods are arranged on both sides of the front end of the seat frame frame, and the two groups of the second connecting rods are arranged on both sides of the rear end of the seat frame frame.

[0013] Preferably, the driving mechanism is an electric angle adjuster.

[0014] Preferably, a torsion spring is provided between the lower end of the second connecting rod and the base bracket.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The seat frame mounting structure provided by the present invention comprises a first locking assembly that maintains a rotational connection between the rear end of the seat frame and the upper end of the second connecting rod, while a second locking assembly maintains a rotational connection between the lower end of the first connecting rod and the base bracket. Under the self-locking action of the drive mechanism, the first connecting rod, the base bracket, the second connecting rod, and the seat frame form a stable four-bar linkage, stably supporting the seat frame on the base bracket. The drive mechanism drives the seat frame to rotate relative to the first connecting rod, thereby driving the four-bar linkage, thereby enabling forward adjustment of the seat frame and exposing space at the rear of the seat frame to ensure that, in the seated position, the backrest inclination adjustment is not obstructed or interfered with by the rear end of the seat cushion. When the first locking assembly releases the connection between the seat frame frame and the second connecting rod, under the driving action of the driving mechanism, the rear end of the seat frame frame can move upward away from the upper end of the second connecting rod, so that the seat frame frame can flip forward and flatten around the first connecting rod. At the same time, the second locking assembly fixes the lower end of the first connecting rod to the base bracket, ensuring that the first connecting rod is in a firmly supported state, thereby providing strong support for the flipping of the seat frame frame and ensuring the reliability and stability of the forward flipping of the seat frame frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a structural diagram of the seat frame installation structure;

[0018] Figure 2 This is a right side view of the seat frame mounting structure;

[0019] Figure 3 It is a right side view of the seat frame mounting structure after the seat frame frame 2 is flipped forward;

[0020] Figure 4 Schematic diagram of the structure of the first locking component C;

[0021] Figure 5 A schematic diagram showing the second locking assembly D on the seat frame mounting structure;

[0022] Figure 6 A reference diagram of the seat frame mounting structure in use when applied to a deformed seat;

[0023] Figure 7 This is a schematic diagram showing the structure of the holding component F (the synchronization rod F3 is hidden). DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0025] like Figure 2 As shown, a seat frame mounting structure includes a base bracket 1 for mounting on a car slide rail, a seat frame skeleton 2 is provided above the base bracket 1, and a first connecting rod B1 and a second connecting rod B2 are provided between the seat frame skeleton 2 and the base bracket 1, wherein the upper and lower ends of the first connecting rod B1 are rotatably connected to the front end of the seat frame skeleton 2 and the base bracket 1 respectively, and the upper and lower ends of the second connecting rod B2 are rotatably connected to the rear end of the seat frame skeleton 2 and the base bracket 1 respectively. The seat frame skeleton 2 is provided with a first locking assembly C at a position corresponding to the rotational connection of the second connecting rod B2, and the first locking assembly C can switch the seat frame skeleton 2 between maintaining a rotational connection with the second connecting rod B2 and releasing the connection. A second locking assembly D is provided between the first connecting rod B1 and the base bracket 1, and the second locking assembly D can switch the first connecting rod B1 between maintaining a rotational connection with the base bracket 1 and a fixed connection. By Figure 6 As can be seen, a drive mechanism 4 is provided between the seat frame 2 and the first connecting rod B1. The drive mechanism 4 is used to drive the seat frame 2 to rotate relative to the first connecting rod B1. In this embodiment, the drive mechanism 4 is an electric recliner, which is controlled by a motor to drive the seat frame 2 to rotate relative to the first connecting rod B1.

[0026] Based on the above structural design, the seat frame mounting structure is applied to a seat that can be transformed into a bed. When the seat is in a sitting state, the first locking component C keeps the rear end of the seat frame frame 2 in rotational connection with the upper end of the second link B2, and the second locking component D keeps the lower end of the first link B1 in rotational connection with the base bracket 1. At this time, under the self-locking action of the drive mechanism 4, the first link B1, the base bracket 1, the second link B2 and the seat frame frame 2 form a stable four-link mechanism, and the seat frame frame 2 can be stably supported on the base bracket 1. In addition, the seat frame frame 2 also has an independent forward movement function. In a sitting state, the drive mechanism 4 drives the seat frame frame 2 to rotate relative to the first link B1, which can drive the four-link mechanism to move, thereby realizing the forward adjustment of the seat frame frame 2 and exposing the rear space of the seat frame frame 2 to ensure that in a sitting state, the backrest inclination adjustment is not blocked or interfered with by the rear end of the seat cushion. When the seat needs to be transformed into a bed, refer to Figure 3 The first locking assembly C releases the connection between the seat frame frame 2 and the second connecting rod B2. Under the driving action of the driving mechanism 4, the rear end of the seat frame frame 2 can move upward away from the upper end of the second connecting rod B2, so that the seat frame frame 2 can flip forward around the first connecting rod B1. At the same time, the second locking assembly D fixes the lower end of the first connecting rod B1 with the base bracket 1, ensuring that the first connecting rod B1 is in a stable supporting state, thereby providing strong support for the flipping of the seat frame frame 2 and ensuring the feasibility of forming a bed.

[0027] Furthermore, Figure 2 As shown, a latch 3 is fixedly mounted on the upper end of the second connecting rod B2. This latch 3 extends along the width of the seat frame 2. The first locking assembly C can engage or release the latch 3. When the first locking assembly C engages the latch 3, the latch 3 and the first locking assembly C maintain a rotational connection, that is, the upper end of the second connecting rod B2 maintains a rotational connection with the rear end of the seat frame 2. When the first locking assembly C releases the latch 3, the connection between the first locking assembly C and the latch 3 is released, and the connection between the rear end of the seat frame 2 and the upper end of the second connecting rod B2 is released.

[0028] Combine Figure 2 and 4 As shown, in this embodiment, the first locking assembly C utilizes a floor lock structure, comprising a base C3 fixedly mounted at the rear end of the seat frame 2. A locking hook C1 and an unlocking component C2, which controls the rotation of the locking hook C1, are rotatably mounted on the base C3. In the locked state, the locking hook C1 engages the latch 3, maintaining a rotational connection with the rear end of the seat frame 2. To unlock, the unlocking component C2 pulls the locking hook C1, rotating it and releasing the latch 3, allowing the rear end of the seat frame 2 to move upward away from the latch 3. Floor locks are a mature technology in automotive seat technology and will not be discussed in detail here.

[0029] Please refer to Figure 5The second locking assembly D includes a locking frame D1, a locking rod D2 located above the locking frame D1, and a zipper D3 connected between the locking frame D1 and the locking rod D2. The locking frame D1 is fixedly assembled on the base bracket 1, the lower end of the first connecting rod B1 is rotatably connected to the locking frame D1, and the middle part of the locking rod D2 is hinged to the first connecting rod B1. A locking notch a is provided at one end of the locking frame D1, and a downwardly extending clamping portion b is provided at one end of the locking rod D2, which is adapted to the locking notch a. When the second locking assembly D is locked, the clamping portion b of the locking rod D2 is clamped downward into the locking notch a. At this time, the locking frame D1, the locking rod D2 and the first connecting rod B1 form a stable triangular structure, and the first connecting rod B1 can be fixedly supported on the base bracket 1. When unlocking, the lock rod D2 can be pulled downward through the zipper D3, and the clamping portion b can be moved upward away from the locking notch a. At this time, the lower end of the first connecting rod B1 can maintain a rotational connection with the base bracket 1.

[0030] In this embodiment, the distal end of the zipper D3 is connected to a manual traction mechanism or an electric traction device, through which the lock rod D2 can be manually or electrically controlled to rotate around the first connecting rod B1.

[0031] like Figure 2 and 3 As shown, the base bracket 1 is provided with a retaining assembly F. When the upper end of the second connecting rod B2 is disconnected from the seat frame 2, the retaining assembly F can keep the second connecting rod B2 locked relative to the base bracket 1. With this design, after the first locking assembly C is unlocked, when the rear end of the seat frame 2 flips forward away from the second connecting rod B2, the retaining assembly F can maintain the second connecting rod B2 in the designed position. When the seat is restored to the sitting position, the seat frame 2 flips from front to back, and the rear end of the seat frame 2 can return to the position connected to the second connecting rod B2, ensuring that the first locking assembly C can accurately lock the latch 3.

[0032] Further, combined with Figure 7As shown, the retaining assembly F includes a first gear F1 and a second gear F2 which are respectively rotatably mounted on the base bracket 1, a first arcuate tooth portion d which is engaged with the first gear F1 is provided at the lower end of the first connecting rod B1, a second arcuate tooth portion e which is engaged with the second gear F2 is provided at the lower end of the second connecting rod B2, the first gear F1 has a first extension portion F11 extending downward at the lower end, the second gear F2 has a second extension portion F21 extending downward at the lower end, a synchronization rod F3 is provided between the lower parts of the first extension portion F11 and the second extension portion F21, and the two ends of the synchronization rod F3 are respectively rotatably connected to the lower parts of the first extension portion F11 and the second extension portion F21. With this design, when the seat frame 2 is tilted forward, the second locking assembly D securely connects the lower end of the first link B1 to the base bracket 1. Specifically, the first arcuate tooth portion d at the lower end of the first link B1 maintains fixed engagement with the first gear F1. Under the synchronous action of the synchronization rod F3, the second arcuate tooth portion e at the lower end of the second link B2 also maintains fixed engagement with the second gear F2, thereby locking the second link B2 relative to the base bracket 1. On the other hand, when the seat is in the sitting position, the second locking assembly D maintains a rotational connection between the lower end of the first link B1 and the base bracket 1. The drive mechanism 4 drives the seat frame 2 to rotate about the first link B1, which in turn drives the lower end of the first link B1 to rotate. This rotation drives the first gear F1 to rotate about the base bracket 1. Under the synchronous transmission action of the synchronization rod F3, this in turn drives the second gear F2 and the lower end of the second link B2 to rotate, thereby achieving the forward movement function of the seat frame 2. In the above structural design, through the meshing and self-locking effect between the gears, in the locked state, the stability of the fixed support of the first connecting rod B1 and the second connecting rod B2 can be improved; in the unlocked state, through gear transmission, it has the technical advantages of high transmission efficiency and high movement accuracy.

[0033] like Figure 2 As shown, in this embodiment, a torsion spring 8 is provided between the lower end of the second connecting rod B2 and the base bracket 1. The torsion spring 8 can eliminate the gap between the lower end of the second connecting rod B2 and the base bracket 1, thereby improving the stability of the overall structure.

[0034] Re-attend Figure 1 and 6 In this embodiment, there are two groups of first links B1, second links B2, latches 3, first locking assemblies C and retaining assemblies F, and they correspond one to one. The two groups of first links B1 are respectively arranged at the front ends of both sides of the seat frame frame 2, and the two groups of second links B2 are respectively located at the rear ends of both sides of the seat frame frame 2. The second locking assembly D is arranged on the inner side of one of the groups of first links B1.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention. Such changes fall within the scope of protection of the present invention.

Claims

1. A seat frame mounting structure, characterized in that: The invention comprises a base bracket (1) for being mounted on a slide rail, a seat frame skeleton (2) being provided above the base bracket (1), a first connecting rod (B1) and a second connecting rod (B2) being provided between the seat frame skeleton (2) and the base bracket (1), the two ends of the first connecting rod (B1) being rotatably connected to the front end of the seat frame skeleton (2) and the base bracket (1), and the two ends of the second connecting rod (B2) being rotatably connected to the rear end of the seat frame skeleton (2) and the base bracket (1); the seat frame skeleton (2) being provided with a first locking assembly (C) at a position corresponding to the rotatable connection of the second connecting rod (B2), the first locking assembly (C) being used to switch the seat frame skeleton (2) between maintaining a rotatable connection with the second connecting rod (B2) and releasing the connection; a second locking assembly (D) being provided between the first connecting rod (B1) and the base bracket (1), the second locking assembly (D) being used to switch the first connecting rod (B1) between maintaining a rotatable connection with the base bracket (1) and a fixed connection; A driving mechanism (4) is provided between the seat frame frame (2) and the first connecting rod (B1), and the driving mechanism (4) is used to drive the seat frame frame (2) to rotate relative to the first connecting rod (B1).

2. A seat frame mounting structure according to claim 1, characterized in that: A latch (3) extending in the direction of the first locking assembly (C) is fixedly provided at the upper end of the second connecting rod (B2), and the first locking assembly (C) can lock the latch (3) or release the latch (3).

3. The seat frame mounting structure according to claim 1, characterized in that: The second locking assembly (D) comprises a locking frame (D1) fixed on the base bracket (1), a locking rod (D2) located above the locking frame (D1), and a zipper (D3) connected between the locking frame (D1) and the locking rod (D2); the lower end of the first connecting rod (B1) is rotatably connected to the locking frame (D1); the middle part of the locking rod (D2) is rotatably connected to the first connecting rod (B1); a locking notch (a) is provided at one end of the locking frame (D1); a clamping portion (b) adapted to the locking notch (a) is provided at one end of the locking rod (D2); and the zipper (D3) is used to clamp the clamping portion (b) in the locking notch (a) or to move the clamping portion (b) upward away from the locking notch (a).

4. The seat frame mounting structure according to claim 3, characterized in that: The distal end of the zipper (D3) is connected to a manual traction mechanism or an electric traction device.

5. The seat frame mounting structure according to claim 1, characterized in that: The first connecting rod (B1), the second connecting rod (B2) and the first locking assembly (C) are each provided in two groups, and correspond one to one. The two groups of the first connecting rod (B1) are arranged on both sides of the front end of the seat frame frame (2), and the two groups of the second connecting rod (B2) are arranged on both sides of the rear end of the seat frame frame (2).

6. The seat frame mounting structure according to claim 1, characterized in that: The driving mechanism (4) is an electric angle adjuster.

7. The seat frame mounting structure according to claim 1, characterized in that: A torsion spring (8) is provided between the lower end of the second connecting rod (B2) and the base bracket (1).

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