A seat with backrest with two-stage adjustment

Abstract

The utility model relates to the technical field of automobile accessories, and specifically relates to a backrest front and back double-grade adjusting seat, which comprises a support frame, a seat and an adjusting backrest, the adjusting backrest comprises a rotating shaft, a sitting frame link plate, a locking gear, an unlocker and a backrest, the support frame provides support for the seat and the adjusting backrest, the backrest is locked with the sitting frame link plate through the locking gear and is fixed on the seat, when the backrest is adjusted by turning over backward, a passenger pushes the backrest backward with hands, drives the sitting frame link plate to rotate around the rotating shaft, makes the backrest rotate backward and lie flat, and the passenger can lie down and rest, when the backrest is adjusted by turning over forward, the passenger pulls the unlocker with hands, rotates and unlocks the locking gear on the sitting frame link plate, makes the backrest rotate forward and fold on the seat, and the rear seat passenger can place legs, the adjusting backrest can realize free turning over adjustment in two directions of forward and backward, can make the backrest more fit human body, and can significantly improve passenger comfort.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a seat with a backrest that can be adjusted in two positions. Background Technology

[0002] Early car seat designs were relatively simple, primarily designed to meet basic seating needs. Typically, known car seat backrest locks only allowed the backrest to be locked in one position.

[0003] With the development of the automotive industry and people's increasing demands for travel quality, passengers expect a more comfortable seating position inside the vehicle. For example, during long journeys, different passengers have different requirements for the reclining angle of the seat back. Utility Model Content

[0004] The purpose of this utility model is to provide a seat with a backrest that can be adjusted in two positions, which solves the problem that the backrest of a car seat can only be locked in one position and cannot meet the passenger's needs for the seat backrest tilt angle.

[0005] To achieve the above objectives, in a first aspect, this utility model provides a seat with a dual-position adjustable backrest, comprising a support frame, a seat, and an adjustable backrest. The seat is mounted on the top of the support frame, and the adjustable backrest is disposed on one side of the adjustable backrest. The adjustable backrest includes a rotating shaft, a seat frame connecting plate, a locking gear, an unlocking device, and a backrest. The rotating shaft is fixedly connected to the seat and located on one side of the seat. The seat frame connecting plate is rotatably connected to the rotating shaft and located on one side of the rotating shaft. The backrest is rotatably disposed on the top of the seat frame connecting plate. The unlocking device is mounted on one side of the backrest, and the locking gear is disposed between the unlocking device and the seat frame connecting plate.

[0006] The unlocking device includes a pull cord, a rotating plate, a zipper, and an unlocking component. The rotating plate is rotatably mounted on one side of the backrest. The pull cord is fixedly connected to the rotating plate and located on one side of the rotating plate. The zipper is mounted on one side of the rotating plate. The unlocking component is located on one side of the locking gear and connected to the pull cord.

[0007] The rotating plate includes a rotation center and a connecting plate. The rotation center is rotatably connected to the backrest and is located on one side of the backrest. The connecting plate is fixedly connected to the rotation center and is located on the side of the rotation center away from the backrest.

[0008] The unlocking component includes an unlocking block and a pull block. The unlocking block is disposed on one side of the locking gear and is rotatably connected to the backrest and located on one side of the backrest. The pull block is assembled on one side of the unlocking block.

[0009] The support frame includes a support frame body and a mounting plate. The support frame body is fixedly connected to the seat and is located at the bottom of the seat. The mounting plate is fixedly connected to the support frame body and is located on the side of the support frame body away from the seat.

[0010] Secondly, this utility model also provides a seat adjustment method with a backrest that can be adjusted in two positions forward and backward, applicable to the seat with a backrest that can be adjusted in two positions forward and backward as described in the first aspect above, comprising the following steps:

[0011] The backrest is locked to the seat frame connecting plate via locking gears and fixed to the seat;

[0012] When adjusting the backrest to flip backward, the passenger uses their hands to push the backrest backward, which drives the seat frame connecting plate to rotate around the rotation axis, causing the backrest to rotate backward and flatten.

[0013] When adjusting the backrest to flip forward, the passenger pulls the unlocking device by hand to rotate and unlock the locking gear on the seat frame connecting plate, causing the backrest to rotate forward and fold.

[0014] This utility model discloses a seat with a dual-position adjustable backrest. A support frame provides support for the seat and the adjustable backrest. The backrest is locked to the seat frame connecting plate via a locking gear and fixed to the seat. When the backrest is flipped backward, the passenger pushes the backrest backward with their hand, driving the seat frame connecting plate to rotate around the rotation axis, causing the backrest to rotate backward and flatten, allowing the passenger to lie down and rest. When the backrest is flipped forward, the passenger pulls the unlocking device, rotating and unlocking the locking gear on the seat frame connecting plate, causing the backrest to rotate forward and fold onto the seat, providing legroom for rear passengers. This adjustable backrest can be freely flipped and adjusted in both forward and backward directions, making it more ergonomic and significantly improving passenger comfort. It solves the problem that car seat backrests can only be locked in one position, failing to meet passengers' needs for different seat backrest tilt angles. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural diagram of a seat with a backrest that can be adjusted forward and backward in two positions, as provided by this utility model.

[0017] Figure 2 This is a side view of a seat with a backrest that can be adjusted forward and backward in two positions, as provided by this utility model.

[0018] Figure 3 yes Figure 1 A magnified view of detail A.

[0019] Figure 4 This is a schematic diagram of the structure of a seat with a backrest that can be adjusted in two positions in the fore-and-aft direction, provided by this utility model.

[0020] Figure 5 yes Figure 4 A magnified view of detail B.

[0021] Figure 6 This utility model provides a flowchart of a method for adjusting a seat with a backrest that can be adjusted forward and backward in two positions.

[0022] In the diagram: 1-Support frame, 2-Seat, 3-Adjustable backrest, 4-Rotating shaft, 5-Seat frame connecting plate, 6-Locking gear, 7-Unlocker, 8-Backrest, 9-Pull cord, 10-Rotating plate, 11-Pull lock, 12-Unlocking component, 13-Rotation center, 14-Connecting plate, 15-Unlocking block, 16-Pull block, 17 Support frame body, 18-Mounting plate. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0024] Please see Figures 1 to 5 In a first aspect, this utility model provides a seat with a dual-position adjustable backrest, including a support frame 1, a seat 2, and an adjustable backrest 3. The seat 2 is mounted on the top of the support frame 1, and the adjustable backrest 3 is disposed on one side of the seat 2. The adjustable backrest 3 includes a rotating shaft 4, a seat frame connecting plate 5, a locking gear 6, an unlocking device 7, and a backrest 8. The rotating shaft 4 is fixedly connected to the seat 2 and located on one side of the seat 2. The seat frame connecting plate 5 is rotatably connected to the rotating shaft 4 and located on one side of the rotating shaft 4. The backrest 8 is rotatably disposed on the top of the seat frame connecting plate 5. The unlocking device 7 is mounted on one side of the backrest 8, and the locking gear 6 is disposed between the unlocking device 7 and the seat frame connecting plate 5.

[0025] In this embodiment of the utility model, the support frame 1 provides support for the seat 2 and the adjustable backrest 3. The backrest 8 of the adjustable backrest 3 is locked to the seat frame connecting plate 5 by the locking gear 6 and fixed to the seat 2. When the backrest 8 is flipped backward for adjustment, the passenger pushes the backrest 8 backward with their hand, driving the seat frame connecting plate 5 to rotate around the rotating shaft 4, so that the backrest 8 rotates backward and flattens, allowing the passenger to lie down and rest. When the backrest 8 is flipped forward for adjustment, the passenger pulls the unlocking device 7 with their hand, rotating and unlocking the locking gear 6 on the seat frame connecting plate 5, so that the backrest 8 rotates forward and folds onto the seat 2, allowing the rear passenger to place their legs. The adjustable backrest 3 can be freely flipped and adjusted in both forward and backward directions, making the adjustable backrest 3 more ergonomic and significantly improving passenger comfort. This solves the problem that the car seat backrest can only be locked in one position and cannot meet the passenger's needs for the seat backrest tilt angle.

[0026] Furthermore, the unlocking device 7 includes a pull cord 9, a rotating plate 10, a zipper 11, and an unlocking component 12. The rotating plate 10 is rotatably disposed on one side of the backrest 8. The pull cord 9 is fixedly connected to the rotating plate 10 and located on one side of the rotating plate 10. The zipper 11 is assembled on one side of the rotating plate 10. The unlocking component 12 is disposed on one side of the locking gear 6 and connected to the pull cord 9.

[0027] In this embodiment of the utility model, the passenger pulls the pull rope 9 with his hand to pull the rotating plate 10. The rotating plate 10 rotates and pulls the zipper 11. The zipper 11 pulls the unlocking member 12, so that the locking gear 6 rotates on the seat frame connecting plate 5 and unlocks, thereby allowing the backrest 8 to rotate forward and fold onto the seat 2, so that the rear passenger can place his legs.

[0028] Furthermore, the rotating plate 10 includes a rotation center 13 and a connecting plate 14. The rotation center 13 is rotatably connected to the backrest 8 and is located on one side of the backrest 8. The connecting plate 14 is fixedly connected to the rotation center 13 and is located on the side of the rotation center 13 away from the backrest 8.

[0029] In this embodiment of the utility model, the rotation center 13 is provided so that the connecting plate 14 can rotate on the backrest 8, and the rotation of the connecting plate 14 can pull the zipper 11.

[0030] Furthermore, the unlocking component 12 includes an unlocking block 15 and a pull block 16. The unlocking block 15 is disposed on one side of the locking gear 6, the unlocking block 15 is rotatably connected to the backrest 8 and is located on one side of the backrest 8, and the pull block 16 is assembled on one side of the unlocking block 15.

[0031] In this embodiment of the utility model, the zipper 11 pulls the pull block 16, the pull block 16 pulls the unlocking block 15 to rotate, thereby driving the locking gear 6 to rotate on the seat frame connecting plate 5 and unlock.

[0032] Furthermore, the support frame 1 includes a support frame body 17 and a mounting plate 18. The support frame body 17 is fixedly connected to the seat 2 and is located at the bottom of the seat 2. The mounting plate 18 is fixedly connected to the support frame body 17 and is located on the side of the support frame body 17 away from the seat 2.

[0033] In this embodiment of the utility model, the support frame body 17 provides support for the seat 2 and the adjustable backrest 3, and the mounting plate 18 is used to connect the support frame body 17 to the carriage and install the support frame body 17 in the carriage.

[0034] Please see Figure 6 Secondly, this utility model also provides a seat adjustment method with a backrest that can be adjusted forward and backward in two positions, applicable to the seat with a backrest that can be adjusted forward and backward in two positions as described in the first aspect above, comprising the following steps:

[0035] S1 backrest 8 is locked to seat frame connecting plate 5 by locking gear 6 and fixed to seat 2;

[0036] In this embodiment of the utility model, the locking gear 6 engages with the seat frame connecting plate 5, thereby locking the backrest 8 to the seat frame connecting plate 5, that is, fixing the backrest 8 to the seat 2.

[0037] When the S2 backrest 8 is tilted backward for adjustment, the passenger pushes the backrest 8 backward with their hands, which drives the seat frame connecting plate 5 to rotate around the rotating shaft 4, so that the backrest 8 rotates backward and flattens.

[0038] In this embodiment of the utility model, the passenger pushes the backrest 8 backward with his / her hand, driving the seat frame connecting plate 5 to rotate around the rotating shaft 4, so that the backrest 8 rotates backward and flattens out, allowing the passenger to lie down and rest.

[0039] When the S3 backrest 8 is tilted forward for adjustment, the passenger pulls the unlocking device 7 by hand to rotate and unlock the locking gear 6 on the seat frame connecting plate 5, causing the backrest 8 to rotate forward and fold.

[0040] In this embodiment of the utility model, the passenger pulls the connecting plate 14 by pulling the pull rope 9 with his hand. Under the action of the rotation center 13, the connecting plate 14 rotates on the backrest 8. The rotation of the connecting plate 14 pulls the zipper 11, which in turn pulls the pull block 16. The pull block 16 then pulls the unlocking block 15 to rotate, thereby driving the locking gear 6 to rotate on the seat frame connecting plate 5 and unlock it. This allows the backrest 8 to rotate forward and fold onto the seat 2, providing a place for the rear passenger to place their legs.

[0041] The above description is merely a preferred embodiment of a seat with a backrest that can be adjusted forward and backward in two positions according to the present utility model. Of course, it should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that all or part of the process of implementing the above embodiments and the equivalent changes made in accordance with the claims of the present utility model still fall within the scope of the utility model.

Claims

1. A seat with a backrest that can be adjusted forward and backward in two positions, characterized in that... ； The device includes a support frame, a seat, and an adjustable backrest. The seat is mounted on the top of the support frame, and the adjustable backrest is located on one side of the adjustable backrest. The adjustable backrest includes a rotating shaft, a seat frame connecting plate, a locking gear, an unlocking device, and a backrest. The rotating shaft is fixedly connected to the seat and located on one side of the seat. The seat frame connecting plate is rotatably connected to the rotating shaft and located on one side of the rotating shaft. The backrest is rotatably mounted on the top of the seat frame connecting plate. The unlocker is mounted on one side of the backrest. The locking gear is located between the unlocker and the seat frame connecting plate.

2. The seat with dual-position backrest adjustment as described in claim 1, characterized in that... ； The unlocking device includes a pull cord, a rotating plate, a zipper, and an unlocking component. The rotating plate is rotatably mounted on one side of the backrest. The pull cord is fixedly connected to the rotating plate and located on one side of the rotating plate. The zipper is mounted on one side of the rotating plate. The unlocking component is located on one side of the locking gear and connected to the pull cord.

3. The seat with dual-position backrest adjustment as described in claim 2, characterized in that... ； The rotating plate includes a rotation center and a connecting plate. The rotation center is rotatably connected to the backrest and is located on one side of the backrest. The connecting plate is fixedly connected to the rotation center and is located on the side of the rotation center away from the backrest.

4. The seat with dual-position backrest adjustment as described in claim 2, characterized in that... ； The unlocking component includes an unlocking block and a pull block. The unlocking block is disposed on one side of the locking gear and is rotatably connected to the backrest and located on one side of the backrest. The pull block is assembled on one side of the unlocking block.

5. The seat with dual-position backrest adjustment as described in claim 1, characterized in that... ； The support frame includes a support frame body and a mounting plate. The support frame body is fixedly connected to the seat and is located at the bottom of the seat. The mounting plate is fixedly connected to the support frame body and is located on the side of the support frame body away from the seat.

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