Foldable automobile rear-row seat

Abstract

Front floor stands are symmetrically arranged on the two sides of the front end of a cushion framework, the lower ends of the front floor stands are fixed to a vehicle body floor, sliding grooves extending front and back are hinged to the upper ends of the front floor stands, and the cushion framework is limited in the sliding grooves in a sliding mode and fixed through a sliding locking mechanism; the two sides of the lower end of the backrest framework are connected to the vehicle body floor through rear floor stands respectively, the rear floor stands are fixedly connected with the vehicle body floor, and the backrest framework is rotationally connected with the rear floor stands; after the sliding locking mechanism is unlocked, the seat cushion framework can slide back and forth along the sliding groove; when the cushion framework slides forwards until the rear end of the cushion framework retreats from the lower part of the backrest framework, the cushion framework can be overturned forwards around the front floor stand, and the backrest framework can be overturned forwards around the rear floor stand to be laid flat. By means of the collaborative design of the front floor stand, the rear floor stand and the sliding grooves, the independent sliding and folding functions of the cushion framework are achieved, and the backrest framework can be turned forwards to be flat.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to a foldable rear seat for automobiles. Background Technology

[0002] Traditional car rear seats generally use a fixed structure, with the seat cushion frame and backrest frame rigidly connected to the vehicle floor. While this design can meet basic seating needs, it has significant functional drawbacks: the seat cushion's fore-and-aft position is fixed, making it impossible to adjust leg support space according to the occupant's body shape or sitting posture, which can easily lead to fatigue during long journeys; at the same time, the seat as a whole lacks spatial flexibility, making it difficult to adapt to the needs of cargo-carrying scenarios.

[0003] To improve space utilization, existing technologies propose designing the rear seats as a single sliding structure, where the seat cushion frame and backrest frame are both fixed to seat rails, allowing the seat to move forward and backward as a whole. However, this improvement still has the following shortcomings: 1. Limited seat cushion space adjustment: Because the seat cushion and backrest slide synchronously, the longitudinal position of the seat cushion relative to the backrest cannot be adjusted independently, making it impossible to optimize the leg support area for passenger height or sitting habits, thus limiting seating comfort; 2. Inefficient cargo mode: When the backrest is folded down to expand the trunk volume, the seat cushion is still fixed in a higher position via the rails, occupying vertical space in the vehicle and failing to form a continuous, flat cargo surface with the folded backrest, resulting in poor stability when stacking items and low space utilization. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model aims to provide a simple and easy-to-operate foldable rear car seat. Through the coordinated design of the front and rear floor supports and the sliding groove, the seat cushion frame can independently slide forward and backward and fold, while retaining the independent folding capability of the backrest frame.

[0005] To achieve the above objectives, this utility model proposes a foldable rear seat for automobiles, comprising a backrest frame and a seat cushion frame. The seat cushion frame has two symmetrical front floor supports on its front sides. The lower ends of the front floor supports are fixed to the vehicle floor, and the upper ends of the front floor supports are hinged to front-to-back extending grooves. The seat cushion frame slides within these grooves and is fixed by a sliding locking mechanism. The lower ends of the backrest frame are connected to the vehicle floor via rear floor supports, wherein the rear floor supports are fixedly connected to the vehicle floor, and the backrest frame is rotatably connected to the rear floor supports. When the sliding locking mechanism is unlocked, the seat cushion frame can slide back and forth along the grooves. When the seat cushion frame slides forward until its rear end is outside the backrest frame, the seat cushion frame can flip forward around the front floor supports, and the backrest frame can flip forward and flatten itself around the rear floor supports.

[0006] In the above scheme: symmetrically arranged front-to-back extending limiting grooves are provided on both sides of the sliding groove. The seat cushion frame is slidably limited within the limiting grooves by stepped screws. The stepped screws move from the outside to the inside through the limiting grooves and are fixed to the seat cushion frame. Two stepped screws are spaced apart along the length of each limiting groove, with the front and rear stepped screws arranged coaxially. The cooperative design of the stepped screws and limiting grooves ensures that the seat cushion frame always moves along a straight trajectory during the front-to-back sliding process, effectively avoiding lateral deviation or swaying, significantly improving dynamic stability, and limiting the sliding stroke of the seat cushion frame.

[0007] In the above scheme: the sliding locking mechanism includes a pin, a return spring, and a cable. The return spring is fixedly installed on the seat cushion frame and connected between the pin and the cable. Its elastic force drives the pin to maintain an insertion tendency towards the sliding groove. The sliding groove has two pin holes spaced apart along its length, corresponding to the front and rear limit positions of the seat cushion frame, respectively. When the seat cushion frame slides to either limit position, the elastic force of the return spring pushes the pin into the corresponding pin hole, thus locking the sliding locking mechanism. The cable is fixed to the backrest frame through a protective tube. Pulling the cable causes the pin to disengage from the pin hole, thus unlocking the sliding locking mechanism. Through the front and rear double pin hole design, the seat cushion frame can achieve rigid locking at both the front and rear limit positions, meaning the seat cushion frame can achieve two levels of adjustment. This design also avoids accidental displacement caused by vibration during vehicle operation, improving safety.

[0008] In the above solution: the rear end of the seat cushion frame is fixed with a foot pad, and the seat cushion frame is supported on the vehicle floor by the foot pad. The structure is simple and easy to install.

[0009] In the above solution: a backrest lock is provided between the upper end of the backrest frame and the vehicle body, and a floor lock is provided between the end of the slide groove away from the front floor support and the vehicle body floor. The backrest lock and the floor lock are used to lock the rotation of the backrest frame and the seat cushion frame, respectively.

[0010] The beneficial effects of this utility model are:

[0011] After the sliding locking mechanism is unlocked, the seat cushion can be adjusted in longitudinal position via the sliding groove to optimize leg support space. When the seat cushion slides out from under the backrest, the seat cushion and backrest can be folded forward around the front and rear floor supports respectively to form a flat cargo surface that seamlessly connects with the trunk floor, significantly improving space utilization efficiency and ease of operation. Attached Figure Description

[0012] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0013] Figure 1This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the slide groove and sliding locking mechanism.

[0015] Figure 3 This is a schematic diagram of the vehicle's floor.

[0016] Figure 4 This is a schematic diagram of the seat cushion frame after it has been flipped forward.

[0017] Figure 5 This is a diagram showing the backrest frame after it has been folded forward and flattened. Detailed Implementation

[0018] like Figure 1 As shown in Figure 5, a foldable rear seat for automobiles mainly consists of a backrest frame 1 and a seat cushion frame 2, with the rear end of the seat cushion frame 2 located below the backrest frame 1.

[0019] Two front floor supports 3 are symmetrically provided on both sides of the front end of the seat frame 2. The lower end of the front floor support 3 is fixed to the vehicle floor 4. The upper end of the front floor support 3 is hinged with a sliding groove 5 that extends forward and backward. The seat frame 2 is limited to sliding in the sliding groove 5 and is fixed by the sliding locking mechanism A.

[0020] The lower ends of the backrest frame 1 are connected to the vehicle floor 4 via the rear floor brackets 6 on both sides. The rear floor brackets 6 and the vehicle floor 4 are fixedly connected, while the backrest frame 1 and the rear floor brackets 6 are rotatably connected.

[0021] When the sliding locking mechanism A is unlocked, the seat cushion frame 2 can slide back and forth along the slide groove 5; when the seat cushion frame 2 slides forward until its rear end exits below the backrest frame 1, the seat cushion frame 2 can flip forward around the front floor support 3, and the backrest frame 2 can flip forward and lie flat around the rear floor support 6.

[0022] Ideally, the slide groove 5 has symmetrically arranged front-to-back extending limiting grooves 51 on both sides. The seat cushion frame 2 is slidably limited in the limiting grooves 51 by stepped screws 7. The stepped screws 7 move from the outside to the inside through the limiting grooves 51 and are fixed to the seat cushion frame 2. Two stepped screws 7 are spaced apart along the length of each limiting groove 51, and the stepped screws 7 on the front side and the stepped screws 7 on the rear side are arranged coaxially. The cooperation design between the stepped screws 7 and the limiting grooves 51 ensures that the seat cushion frame 2 always moves along a straight trajectory during the front-to-back sliding process, effectively avoiding lateral deviation or swaying, significantly improving dynamic stability, and limiting the sliding stroke of the seat cushion frame 2.

[0023] Preferably, the sliding locking mechanism A includes a pin 8, a return spring 9, and a cable 10. The return spring 9 is fixedly mounted on the seat cushion frame 2 and connected between the pin 8 and the cable 10. Its elastic force drives the pin 8 to maintain an insertion tendency towards the slide groove 5. The slide groove 5 has two pin holes 52 spaced apart along its length, corresponding to the front and rear limit positions of the seat cushion frame 2, respectively. When the seat cushion frame 2 slides to either limit position, the elastic force of the return spring 9 can push the pin 8 into the corresponding pin hole 52 to lock the sliding locking mechanism A. The cable 10 is fixed to the backrest frame 1 through a protective tube. Pulling the cable 10 can cause the pin 8 to disengage from the pin hole 52 to unlock the sliding locking mechanism A. With the design of front and rear double pin holes 52, the seat frame 2 can be rigidly locked at both the front and rear limit positions, that is, the seat frame 2 can achieve two-level adjustment. This design also avoids accidental displacement caused by vibration during vehicle operation, thus improving safety.

[0024] Ideally, a foot pad 11 is fixed at the rear end of the seat frame 2, and the seat frame 2 is supported on the vehicle floor 4 by the foot pad 11. The structure is simple and easy to install.

[0025] Ideally, a backrest lock is installed between the upper end of the backrest frame 1 and the vehicle body, and a floor lock is installed between the end of the slide groove 5 away from the front floor support 3 and the vehicle body floor 4. The backrest lock and the floor lock are used to lock the rotation of the backrest frame 1 and the seat cushion frame 2, respectively.

Claims

1. A foldable rear seat for a vehicle, comprising a backrest frame (1) and a seat cushion frame (2), characterized in that: The front end of the seat cushion framework (2) is symmetrically provided with two front floor supports (3), the lower end of the front floor support (3) is fixed on the vehicle body floor (4), the upper end of the front floor support (3) is hingedly provided with a front and rear extending sliding groove (5), the seat cushion framework (2) is slidingly limited in the sliding groove (5) and is fixed by a sliding locking mechanism (A); the lower end of the backrest framework (1) is respectively connected to the vehicle body floor (4) through a rear floor support (6), wherein the rear floor support (6) is fixedly connected to the vehicle body floor (4), and the backrest framework (1) is rotatably connected to the rear floor support (6); when the sliding locking mechanism (A) is unlocked, the seat cushion framework (2) can slide forward and backward along the sliding groove (5); when the seat cushion framework (2) slides forward to the rear end thereof out of the lower side of the backrest framework (1), the seat cushion framework (2) can be flipped forward around the front floor support (3), and the backrest framework (2) can be flipped forward around the rear floor support (6) to be flat.

2. The foldable rear bench seat of claim 1, wherein: The sliding groove (5) is symmetrically provided with front and rear extending limiting grooves (51) on both sides, the seat cushion framework (2) is slidingly limited in the limiting groove (51) through a stepped screw (7), the stepped screw (7) is movably arranged from outside to inside through the limiting groove (51) and is fixed on the seat cushion framework (2), two stepped screws (7) are arranged in each limiting groove (51) along the length direction of the limiting groove (51), and the front stepped screws (7) and the rear stepped screws (7) are coaxially arranged respectively.

3. The foldable rear bench seat of claim 2, wherein: The sliding locking mechanism (A) comprises a latch (8), a reset spring (9) and a pull cable (10), the reset spring (9) is limitingly arranged on the seat cushion framework (2) and is connected between the latch (8) and the pull cable (10), and the reset spring (9) drives the latch (8) to keep the insertion trend in the direction of the sliding groove (5) by the elastic force thereof, the sliding groove (5) is provided with front and rear two pin holes (52) along the length direction thereof, and the front and rear two pin holes (52) correspond to the front end limit position and the rear end limit position of the seat cushion framework (2) respectively; when the seat cushion framework (2) slides to any limit position, the elastic force of the reset spring (9) can push the latch (8) to be inserted into the corresponding pin hole (52), so that the sliding locking mechanism (A) is locked; the pull cable (10) is fixed on the backrest framework (1) through a protective tube, and pulling the pull cable (10) can drive the latch (8) to be pulled out of the pin hole (52), so that the sliding locking mechanism (A) is unlocked.

4. The foldable rear bench seat of claim 1, wherein: The rear end of the seat cushion framework (2) is fixedly provided with a foot pad (11), and the seat cushion framework (2) is supported on the vehicle body floor (4) through the foot pad (11).

5. The foldable rear bench seat of claim 1, wherein: A backrest lock is arranged between the upper end of the backrest framework (1) and the vehicle body, and a floor lock is arranged between the end of the sliding groove (5) away from the front floor support (3) and the vehicle body floor (4).

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