A foldable roll-over seat

Abstract

The utility model relates to the field of automobile manufacturing, concretely relates to a foldable side-turning seat. It includes backrest assembly and cushion assembly, the backrest assembly includes backrest, handrail, backrest unlocking catch and backrest unlocking cable; The cushion assembly includes cushion, cushion support leg, cushion support leg rotating support, support sheet metal, rotating shaft and snap spring. The utility model realizes the backrest locking and laying down function through locking pin, realizes the backrest locking function through spring again, realizes the overall side-turning function of seat through multi-connecting rod mechanism, realizes the locking function after seat side-turning through snap spring. It is simple that backrest locking mechanism has, and the cost is lower, the overall side-turning and self-locking function of seat are realized by the connecting rod mechanism of self, and the mechanical structure is reliable, and the operation is simple, because the seat can be self-locked, and the arrangement position is not restrained.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing, specifically to a foldable and tiltable seat. Background Technology

[0002] Currently, commercial vehicle customers generally prefer to maximize profits by increasing the number of seats without affecting access or storage space. There are two main types of folding side-folding seat structures on the market: one uses a locking plate to fix one end to the vehicle body, and the other end uses seat legs bolted to the body, finally securing it to the side panel with hooks. This structure can only be installed on one side of the side panel, the seat cannot self-lock, and its placement is limited; the other type uses a locking plate to fix one end to the vehicle body, uses a gas strut to assist in automatic seat folding, and then uses locks and bolts to secure the seat. Both structures have the following problems: the seat cannot self-lock; the seat can only be placed near the side panel, requiring additional hooks on the roof for fixation, which is inconvenient and the seat is prone to Y-axis swaying; secondly, the seat cannot be placed in the middle aisle, failing to solve the problem of increasing seating capacity without affecting access space; seats using gas strut structures are more expensive, cumbersome to operate, and aesthetically unappealing. Utility Model Content

[0003] To solve the above problems, this utility model proposes a novel folding and tilting seat. The backrest is locked using a locking pin and a spring, while the seat tilting and locking are achieved through a multi-link mechanism and a retaining spring. The specific technical solution is as follows: A foldable, side-folding seat includes a backrest assembly and a seat cushion assembly. The backrest assembly includes a backrest, armrests, a backrest unlocking handle, and a backrest unlocking cable. The backrest unlocking handle is installed on the upper part of the backrest, and the armrests are installed in the middle part of the backrest. The lower part of the backrest is provided with a mounting hole for connecting to the seat cushion. The backrest and the seat cushion are fixedly connected by a backrest-seat connecting bolt. A backrest locking pin and a spring are provided on one side of the seat cushion connecting bolt. The backrest unlocking handle is connected to the backrest locking pin through the backrest unlocking cable. The seat cushion assembly includes a seat cushion, seat cushion support legs, seat cushion support leg rotating bracket, support sheet metal, rotating shaft, and retaining spring. The seat cushion is fixed to the seat cushion support legs, and the seat cushion support legs are fixed to the seat cushion support leg bracket. A first upper rotating shaft and a first lower rotating shaft are provided to form a first connecting rod with the first seat cushion support sheet metal. A second upper rotating shaft and a second lower rotating shaft are provided to form a second connecting rod with the second seat cushion support sheet metal. A retaining spring is provided on the third upper rotating shaft to form a third connecting rod. The first connecting rod, the second connecting rod, and the third connecting rod are installed under the seat cushion and connected to the seat mounting base.

[0004] Furthermore, an anti-friction guide cover is provided on the outside of the seat connecting bolt.

[0005] Furthermore, a rubber pad is installed under the seat cushion support leg.

[0006] The working principle of this utility model is as follows: The backrest and seat cushion assembly are connected together by bolts. When the backrest unlock handle is operated, the locking pin is disengaged under the action of the backrest cable, and the backrest is laid down. After the backrest unlock handle is released, the locking pin can be locked again under the action of the spring. Then, an upward force is applied to the lower left of the seat cushion, and the seat cushion support leg rotating bracket drives the seat cushion support leg to move upward around the third upper rotating axis. Under the action of the first and second support sheet metal, the seat cushion and backrest tilt the whole vehicle around the first and second upper rotating axes. Finally, the retaining spring is fixed on the upper rotating axis and the third upper rotating axis, and the seat achieves the locking function.

[0007] This invention utilizes a locking pin to achieve both backrest locking and reclining functions, and a spring to re-lock the backrest; a multi-link mechanism to achieve the overall side-flipping function of the seat; and a retaining spring to achieve the locking function after the seat has flipped over. It features a simple and low-cost backrest locking mechanism; the seat relies on its own linkage mechanism to achieve overall side-flipping and self-locking functions, ensuring reliable mechanical structure and simple operation; and because the seat itself can self-lock, its placement is unrestricted. Attached Figure Description

[0008] Figure 1 A schematic diagram of the structure of this utility model; Figure 2 Structural cutaway diagram of this utility model; Figure 3 Diagram of the unlocked backrest reclined state of this utility model; Figure 4 Diagram showing the overall side-flipping process of the seat in this utility model; Figure 5 This utility model shows the final state of the seat flipping over.

[0009] Figure label: 1-Backrest unlocking handle, 2-Backrest, 3-Armrest, 4-Anti-friction guide cover, 5-Backrest lock pin, 6-Spring, 7-Seat cushion support leg, 8-Rubber pad, 9-Seat cushion support leg rotating bracket, 10-First lower rotating shaft, 11-Second lower rotating shaft, 12-First seat cushion support sheet metal, 13-Second seat cushion support sheet metal, 14-First upper rotating shaft, 15-Second upper rotating shaft, 16-Third upper rotating shaft, 17-Snap ring, 18-Seat cushion, 19-Seat backrest connecting bolt, 20-Backrest unlocking cable. Detailed Implementation

[0010] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0011] like Figure 1-2 As shown, a foldable side-folding seat includes a backrest assembly and a seat cushion assembly. The backrest assembly includes a backrest 2, an armrest 3, a backrest unlocking handle 1, and a backrest unlocking cable 20. The backrest unlocking handle 1 is installed on the upper part of the backrest 2, and the armrest 3 is installed on the middle part of the backrest 2. The lower part of the backrest 2 is provided with a mounting hole for connecting to the seat cushion 18. The backrest and the seat cushion are fixedly connected by a backrest-seat connecting bolt 19. A backrest locking pin 5 and a spring 6 are provided on one side of the seat cushion connecting bolt. The backrest unlocking handle 1 is connected to the backrest locking pin 5 through the backrest unlocking cable 20. The seat cushion assembly includes a seat cushion 18, a seat cushion support leg 7, a seat cushion support leg rotating bracket 9, a support sheet metal, a rotating shaft, and a retaining spring 17. The seat cushion 18 is fixed to the seat cushion support leg 7, and the seat cushion support leg 7 is fixed to the seat cushion support leg bracket 9. A first upper rotating shaft 14 and a first lower rotating shaft 11 are provided to form a first connecting rod with the first seat cushion support sheet metal 12. A second upper rotating shaft 15 and a second lower rotating shaft 10 are provided to form a second connecting rod with the second seat cushion support sheet metal 13. A retaining spring 17 is provided on a third upper rotating shaft 16 to form a third connecting rod. The first connecting rod, the second connecting rod, and the third connecting rod are installed under the seat cushion and connected to the seat mounting base.

[0012] An anti-friction guide cover 4 is provided on the outside of the seat connecting bolt. A rubber pad 8 is provided under the seat support leg.

[0013] The backrest and seat cushion assembly are connected together by bolts. When the backrest unlock handle is operated, the locking pin is disengaged by the backrest cable, allowing the backrest to recline downwards. After releasing the backrest unlock handle, the locking pin can be locked again under the force of the spring. Then, an upward force is applied to the lower left of the seat cushion, causing the seat cushion support leg to rotate and move upwards around the third upper rotation axis. Under the action of the first and second support sheet metal, the seat cushion and backrest tilt the entire vehicle around the first and second upper rotation axes. Finally, the retaining spring is fixed to the third upper rotation axis, and the seat achieves the locking function.

[0014] like Figure 3 -Showing the lock backrest in the reclining position; Figure 4 Displaying a diagram showing the entire process of the seat flipping over; Figure 5 The image shows the final state of the seat when it is fully tilted to the side.

[0015] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A foldable, side-folding seat, characterized in that: It includes a backrest assembly and a seat cushion assembly. The backrest assembly includes a backrest, armrests, a backrest unlocking handle, and a backrest unlocking cable. The backrest unlocking handle is installed on the upper part of the backrest, and the armrests are installed in the middle of the backrest. The lower part of the backrest is provided with a mounting hole for connecting to the seat cushion. The backrest and the seat cushion are fixedly connected by a backrest-seat connecting bolt. A backrest locking pin and a spring are provided on one side of the seat cushion connecting bolt. The backrest unlocking handle is connected to the backrest locking pin through the backrest unlocking cable. The seat cushion assembly includes a seat cushion, seat cushion support legs, seat cushion support leg rotating bracket, support sheet metal, rotating shaft, and retaining spring. The seat cushion is fixed to the seat cushion support legs, and the seat cushion support legs are fixed to the seat cushion support leg bracket. A first upper rotating shaft and a first lower rotating shaft are provided to form a first connecting rod with the first seat cushion support sheet metal. A second upper rotating shaft and a second lower rotating shaft are provided to form a second connecting rod with the second seat cushion support sheet metal. A retaining spring is provided on the third upper rotating shaft to form a third connecting rod. The first connecting rod, the second connecting rod, and the third connecting rod are installed under the seat cushion and connected to the seat mounting base.

2. The foldable side-flipping seat according to claim 1, characterized in that: An anti-friction guide cover is provided on the outside of the seat connecting bolt.

3. A foldable, side-flipping seat according to claim 1, characterized in that: A rubber pad is placed under the seat cushion support leg.

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