Multi-shape seat

Abstract

The present invention discloses a multi-form chair, comprising a movable panel and seats located on both sides of the movable panel, the seats comprising a seat cushion and a seat back, the seat cushion and the seat back being rotatably connected; a support frame is provided on one side wall of the seat, the support frame comprising a horizontal portion and a vertical portion, the movable panel being rotatably connected to the horizontal portion via a connecting rod on both sides, the top of the vertical portion extending out of the seat cushion, the vertical portion being rotatably connected to a limit rod, and the limit rod being slidably connected to the connecting rod; when the movable panel is lowered to function as a bed panel, the limit rod pulls the connecting rod to prevent the connecting rod from rotating, and the seat back folds toward the seat cushion, thereby compensating for the height difference between the movable panel and the seat cushion. The support frame and the connecting rod are located on the same side, and when the movable panel is used as a table panel, the vertical portion of the support frame extending out of the seat cushion can be blocked by the connecting rod, thereby preventing the support frame from interfering with the use of the chair; when the movable panel is used as a bed panel, a limit rod is provided on the support frame to ensure the stability of the bed panel, and the seat back compensates for the height difference between the bed panel and the seat cushion while blocking the support frame, thereby ensuring the stability of the bed panel.

Description

Technical Field

[0001] The present invention relates to a rail transit seat, in particular to a multi-form seat. Background Art

[0002] Folding seats with integrated berth functions offer advantages such as ease of operation and space conservation. Patent application publication number CN216761748U discloses a novel convertible sleeper for trains. The movable panel at one end is connected to the seat via a nearly L-shaped tilting frame on both sides, with a tilting lock on the other end. When the movable panel rotates around the tilting frame to above the seat, it can be used as a table. After it flips 180 degrees up and down around the tilting frame, it lowers to the seat level, where it can be combined with the seat surface to function as a bed. In this solution, when the movable plate is in a high position, the flip fixing code and the flip frame are located on opposite sides. The flip fixing code needs to be connected to an additional support. When in use, the flip frame or the additional support will inevitably form a cross bar. When users sit on both sides of the table board, they have to cross the cross bar, which is inconvenient to use. When the movable plate is in a low position, there is no support on both sides and the stability is low. If supports are added at both ends of the movable plate, holes or grooves need to be opened on the side of the seat close to the movable plate, which reduces the usable area of ​​the seat and affects the appearance. If brackets are set on the side walls of the seat, similarly, cross bars will be formed, compressing the usable space between the seats, which is not conducive to the user's legs. Summary of the Invention

[0003] Purpose of the invention: The purpose of the present invention is to provide a multi-form chair to simultaneously solve the problems of rationality of space occupancy and stability.

[0004] Technical solution: The multi-form seat described in the present invention includes a movable plate and seats located on both sides of the movable plate, the seats including a seat cushion and a seat back, and the seat cushion and the seat back are rotatably connected; a support frame is provided on the side wall at one end of the seat, the support frame includes a horizontal part and a vertical part, the two sides of the movable plate are rotatably connected to the horizontal part through a connecting rod, the top of the vertical part extends out of the seat cushion, the vertical part is rotatably connected to a limit rod, and the limit rod and the connecting rod are slidably connected; when the movable plate descends to serve as a bed board, the limit rod pulls the connecting rod to prevent the connecting rod from rotating, and the seat back is folded toward the seat cushion to make up for the height difference between the movable plate and the seat cushion.

[0005] Preferably, the top of the vertical portion of the support frame is bent toward the movable board, and when the movable board is lowered to serve as the bed board, one end of the movable board close to the support frame is placed on the top of the vertical portion of the support frame.

[0006] Preferably, in order to ensure the stability of the table top, a first protrusion is provided on the top of the side of the connecting rod away from the support seat, and eccentric wheels are provided on both sides of the movable plate. When the movable plate rises to serve as the table top, the eccentric wheels press on the first protrusion.

[0007] Preferably, a fixing assembly is provided on the end surface of the movable plate, and the fixing assembly includes a plug-in plate and a plug-in socket for connecting to a vehicle body, and the plug-in plate and the connecting rod are located at the same end of the movable plate.

[0008] Preferably, a sliding groove is provided on the limiting rod, and a pin is provided on the side of the connecting rod. The pin is located in the sliding groove and is slidably connected to the sliding groove.

[0009] Preferably, when the movable plate is used as a table top, in order to avoid and block the bending of the top of the vertical part of the support frame, a second protrusion is provided on the side of the connecting rod close to the support part, and the pin shaft is located on the second protrusion at the bottom of the connecting rod.

[0010] Preferably, a groove is provided on the top of the chair back for accommodating the top of the support frame.

[0011] Preferably, the surface of the movable plate is provided with a soft cushion.

[0012] Preferably, in order to ensure the stability of the chair back and prevent the limiting assembly from interfering with the table board when the movable board is used as a bed board, a limiting assembly is provided on the top of the chair back, and the limiting assembly includes an unlocking mechanism and a locking hook for connecting to the wall, and the unlocking mechanism is embedded in the chair back.

[0013] Preferably, in order to limit the rotation angle of the movable plate and ensure the supporting strength, reinforcing rods are provided between the connecting rods.

[0014] Beneficial effects: Compared with the prior art, the present invention has the following advantages: 1. It solves the rationality of space occupancy and stability. The support frame and the connecting rod are located on the same side. When the movable plate is used as a table board, the vertical part of the support frame extending out of the seat cushion can be blocked by the connecting rod, avoiding the support frame affecting the use of the seat; when the movable plate is used as a bed board, a limit rod is provided on the support frame to ensure the stability of the bed board, and the backrest makes up for the height difference between the bed board and the seat cushion, while blocking the support frame, ensuring the stability of the bed board and the use area of ​​the bed board; 2. The movable plate fixing part is at the same end as the connecting rod. When the movable plate is used as a table board, it is beneficial for the connecting rod to block the support frame, thereby ensuring safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the seat structure of the present invention in an unfolded state;

[0016] Figure 2 This is a front view of the seat structure in a folded state of the present invention;

[0017] Figure 3 for Figure 1 Middle AA section view;

[0018] Figure 4 for Figure 2 Middle BB section view;

[0019] Figure 5 This is a side view of the table top structure of the present invention in an unfolded state;

[0020] Figure 6 This is a side view of the table top structure of the present invention in a folded state;

[0021] Figure 7 for Figure 5 Enlarged view of middle part I;

[0022] Figure 8 This is a front view of the table top structure of the present invention in an unfolded state;

[0023] Figure 9 for Figure 3 Middle CC section view;

[0024] Figure 10 A top view of the seat structure of the present invention in an unfolded state;

[0025] Figure 11 This is a top view of the seat structure in the folded state of the present invention. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0027] like Figure 1 、 Figure 2 As shown, the multi-form seat includes a movable plate 3 and seats 1 located on both sides of the movable plate 3.

[0028] The seat 1 includes a seat cushion 11 and a seat back 12. The rear side of the seat cushion 11 and the bottom of the seat back 12 are rotatably connected. Figures 5 to 8 The side wall of one end of the seat leg is provided with a support frame 2. The support frame 2 has a horizontal portion 21 and a vertical portion 22. The movable panel 3 is rotatably connected to the horizontal portion 21 via a connecting rod 5 on both sides. The top of the vertical portion 22 of the support frame 2 extends out of the seat cushion 11. The vertical portion 11 is rotatably connected to a limit rod 9. The limit rod 9 and the connecting rod 5 are slidably connected. Specifically, the limit rod 9 is provided with a slide groove, and the side of the connecting rod 5 is provided with a pin 52. The pin 52 is located in the slide groove and slidably connected to the slide groove. When the movable panel 3 is lowered to serve as a bed board, the limit rod 9 uses the slide groove to pull the connecting rod 5, preventing the connecting rod 5 from rotating and ensuring the stability of the bed board. Due to the provision of the limit rod 9, the surface of the movable panel 3 is usually padded 33, which creates a height difference between the movable panel 3 and the seat 1. In other words, the movable panel 3 protrudes relative to the seat cushion 11. Folding the seat back 12 toward the seat cushion 11 can compensate for the height difference between the padded 33 or the surface of the movable panel 3 and the seat cushion 11. A groove is provided on the top of the chair back 12 for accommodating the top of the support frame 2 .

[0029] The top of the vertical portion 22 of the support frame 2 is bent toward the movable board 3 . When the movable board 3 descends to serve as a bed board, one end of the movable board 3 close to the support frame 2 rests on the top of the vertical portion 22 of the support frame 2 .

[0030] A protrusion 55 is provided on the top of the front side of the connecting rod 5 away from the support frame 2, and a protrusion 57 and a protrusion 56 are provided on the top and bottom of the rear side of the connecting rod 5 close to the support frame 2 respectively. The top of the movable plate 3 is rotatably connected to the connecting rod 5 through the protrusion 57, the rotating shaft 51 and the connecting rod 5. Eccentric wheels 31 are provided on both sides of the movable plate 3. When the movable plate 3 is used as a table plate, the eccentric wheels 31 press on the protrusion 55 to prevent the movable plate 3 from folding toward the connecting rod 5. The pin shaft 52 is located on the protrusion 56 at the bottom of the connecting rod 5. When the movable plate 3 is used as a table plate, the protrusions 57 and the protrusions 56 enable the connecting rod 5 to avoid and block the bending of the top of the vertical part 22 of the support seat 2; a reinforcing rod 54 is provided between the connecting rods 5 on both sides.

[0031] A fixing assembly is provided at the end of the movable plate 3, which includes a plug-in plate 32 and a plug-in seat 4. The plug-in seat 4 is used to connect to the vehicle body, with its opening facing downward. The plug-in plate 32 is connected to the movable plate 3, with its opening facing upward. The plug-in plate 31 and the connecting rod 5 are located at the same end of the movable plate 3; when the movable plate 3 is unfolded, the plug-in plate 32 is inserted into the plug-in seat 4 and cooperates with the eccentric wheel 31 to keep the movable plate 3 stable. Specifically, the plug-in plate 32 and the eccentric wheel 31 are respectively located on both sides of the rotating shaft 51 to maintain the stability of the movable plate 3.

[0032] The top of the seat 1 has a limit assembly, which includes an unlocking mechanism 6 and a lock hook 7. The unlocking mechanism 6 is embedded in the seat back 12, and the lock hook 7 is fixed to the vehicle body and can be rotated and reset. When the seat back 12 is upright, the lock hook 7 hooks the top of the seat back 12. When the seat back 12 needs to be rotated, the unlocking key is inserted into the unlocking mechanism. The push rod inside the unlocking mechanism 6 pushes the lock hook 7 away from the seat back 12, releasing the lock hook 7 from the seat back 12, and the seat back 12 can be folded. A headrest 8 is provided on the top of the seat back 1.

Claims

1. A multi-form seat, comprising a movable plate (3) and seats (1) located on both sides of the movable plate, characterized in that: The seat (1) comprises a seat cushion (11) and a seat back (12), and the seat cushion (11) and the seat back (12) are rotatably connected; a support frame (2) is provided on a side wall at one end of the seat (1), and the support frame comprises a horizontal portion (21) and a vertical portion (22); both sides of the movable plate (3) are rotatably connected to the horizontal portion (21) through a connecting rod (5), the top of the vertical portion (22) extends out of the seat cushion (11), and the vertical portion (22) is rotatably connected to a limiting rod (9), and the limiting rod (9) and the connecting rod (5) are slidably connected; when the movable plate (3) descends to serve as a bed plate, the limiting rod (9) pulls the connecting rod (5) to prevent the connecting rod from rotating, and the seat back (12) folds toward the seat cushion (11) to make up for the height difference between the movable plate (3) and the seat cushion (11).

2. The multi-modal seat according to claim 1, characterized in that: The top of the vertical portion (22) of the support frame (2) is bent toward the movable plate (3). When the movable plate (3) is lowered to serve as a bed plate, one end of the movable plate (3) close to the support frame (2) rests on the top of the vertical portion (22) of the support frame.

3. The multi-modal seat according to claim 1, wherein: A first protrusion (55) is provided on the top of the side of the connecting rod (5) away from the support seat, and eccentric wheels (31) are provided on both sides of the movable plate. When the movable plate (3) rises to serve as a table top, the eccentric wheels (31) press on the first protrusion (55).

4. The multi-modal seat according to claim 1, wherein: The end surface of the movable plate (3) is provided with a fixing assembly, and the fixing assembly includes a plug-in plate (32) and a plug-in seat (4) for connecting to a vehicle body. The plug-in plate (32) and the connecting rod (5) are located at the same end of the movable plate (3).

5. The multi-modal seat according to claim 1, wherein: The limiting rod (9) is provided with a slide groove, and a pin shaft (52) is provided on the side of the connecting rod. The pin shaft (52) is located in the slide groove and is slidably connected to the slide groove.

6. The multi-modal seat according to claim 5, characterized in that: A second protrusion (56) is provided on one side of the connecting rod (5) close to the support seat, and the pin (52) is located on the second protrusion at the bottom of the connecting rod.

7. The multi-modal seat according to claim 1, wherein: The top of the chair back (12) is provided with a groove for accommodating the top of the support frame (2).

8. The multi-modal seat according to claim 1, wherein: A soft pad (33) is provided on the surface of the movable plate (3).

9. The multi-modal seat according to claim 1, wherein: A limiting component is provided on the top of the chair back (12), and the limiting component comprises an unlocking mechanism (6) and a lock hook (7) for connecting to a wall, and the unlocking mechanism (6) is embedded in the chair back (12).

10. The multi-modal seat according to claim 1, wherein: Reinforcement rods (54) are provided between the connecting rods (5).

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