Seat with seat cushion capable of swinging forwards and turning over and capable of being quickly changed into bed

Abstract

The invention discloses a rapid bed-changing seat with a seat cushion capable of swinging forwards and turning over in the technical field of seats, which comprises a main backrest framework and a seat cushion framework, seat cushion connecting plates are symmetrically and fixedly arranged on two sides of the main backrest framework, the seat cushion connecting plates are rotatably connected with one end of a swinging plate, and the other end of the swinging plate is rotatably connected with the seat cushion framework. The other end of the swing plate is rotationally connected with the lower position of the end of the side plate, the main backrest framework is installed on the inner side of the other end of the side plate, the auxiliary backrest framework is arranged on the outer side of the main backrest framework, and the auxiliary backrest body is arranged on the outer side of the auxiliary backrest framework in a wrapping mode. The seat comprises the main backrest framework, the auxiliary backrest framework and the seat cushion framework, the seat cushion framework can be forwards turned over and adjusted through the end, opposite to the side plate, of the seat cushion connecting plate, the main backrest framework can be forwards turned over and adjusted through the other end, opposite to the side plate, of the seat cushion connecting plate, the auxiliary backrest framework is backwards turned over and adjusted, and the adjusting mode is easy to operate; and after the seat cushion main body is overturned forwards, the main backrest framework is overturned forwards.

Description

Technical Field

[0001] This invention belongs to the field of seat-related technology, specifically, it relates to a quick-convertible bed seat with a seat cushion that can be tilted forward and flipped. Background Technology

[0002] Car seats can be categorized by shape (split seats, bench seats); by function (fixed, removable, adjustable); and by seating capacity (single, double, multi-seater). Based on performance, seats have evolved from early fixed seats to multi-functional, power-adjustable seats, including air-cushioned seats, electric seats, stereo seats, recovery seats, and finally, electronically adjustable seats. Car seats typically include headrests, three-point seatbelts, seat cushions, and backrests. Most modern car seats are adjustable, with options such as: seat cushions can be flipped forward to a horizontal position; backrests can be flipped forward to a horizontal position; and the seat cushion and backrest can be aligned 180 degrees, allowing for use as a bed. Additional features include fore-and-aft movement, lateral movement, heating, ventilation, and massage functions. Headrests are removable and height-adjustable; backrest angles are adjustable from 0-180 degrees. For chairs that can be converted into beds, the conversion process is cumbersome and inconvenient. The backrest can only be laid flat backwards, not forwards, and the seat cushion needs to be slid forwards to leave enough space. When the backrest is laid flat, the bed size is small. Even when the chair is laid flat, there are still foam protrusions. The bed surface is uneven, which makes it feel like there are foreign objects when sleeping, resulting in poor comfort when the bed is converted.

[0003] In view of this, the present invention is proposed. Summary of the Invention

[0004] The technical problem to be solved by this invention is to overcome the shortcomings of the prior art and provide a bed-like chair with a seat cushion that can be tilted forward and flipped over. To solve the above technical problem, the basic concept of the technical solution adopted by this invention is as follows:

[0005] A convertible bed chair with a forward-swinging and folding seat cushion includes a main backrest frame and a seat cushion frame. Seat cushion connecting plates are symmetrically fixed on both sides of the main backrest frame. Each seat cushion connecting plate is rotatably connected to one end of a swing plate. The other end of the swing plate is rotatably connected to the lower end of a side panel. The main backrest frame is installed on the inner side of the other end of the side panel. A secondary backrest frame is provided on the outer side of the main backrest frame. The outer side of the secondary backrest frame is covered by the secondary backrest body. The outer side of the main backrest frame is covered by the main backrest body. The outer side of the seat cushion frame is covered by the seat cushion body. The swing plate and the seat cushion connecting plate are rotatably connected by a swing seat connecting pin. A second swing fitting rod is fixedly installed on the seat cushion connecting plate on the side of the swing seat connecting pin. A matching groove is opened on the swing plate at the side position of the swing seat connecting pin. The swing fitting rod is fitted in the matching groove. The swing plate and the side plate are rotatably connected by a swing side connecting pin. A first swing fitting rod is fixedly installed on the swing plate at the upper position of the swing side connecting pin. A matching slide groove is provided on the side plate. The first swing fitting rod is fitted in the matching slide groove.

[0006] As a further aspect of the present invention: the mating groove is an arc-shaped groove structure, the upper arc diameter of the mating groove is the same as the groove width, the lower arc diameter of the mating groove is greater than the groove width, the seat cushion body is flipped forward to a horizontal state, the first swinging mating rod moves to the upper position of the mating groove, and the mating of the first swinging mating rod and the mating groove can limit the rotation adjustment of the swing plate relative to the side plate.

[0007] As a further aspect of the present invention: the mating groove is provided with recesses on both sides of the swing seat connecting pin. When the seat frame is adjusted to the sitting state or the forward-folding bed state, the swing mating rods are respectively located in the corresponding recesses of the mating groove for limiting.

[0008] As a further aspect of the present invention: a backrest angle adjuster is provided between the main backrest frame and the side panel; the lower outer part of the connection end between the main backrest frame and the side panel is rotatably connected to the secondary backrest frame via a flip hinge; and a backrest adjustment handle is provided on the outer side of the side panel for adjusting the backrest in conjunction with the backrest adjuster.

[0009] As a further embodiment of the present invention: a front-to-back locking rod is provided below the main seat cushion body; the front foam of the main backrest body and the main seat cushion body is ergonomically shaped; the back foam of the main backrest body and the main seat cushion body is made flat; after the main seat cushion body is rotated forward 180 degrees, the main backrest body is rotated forward 90 degrees, so that the back of the main backrest body and the back of the main seat cushion body are on the same horizontal plane, making the bed comfortable and free of foreign objects.

[0010] As a further aspect of the present invention: the main backrest frame is provided with two sets of square hollow tube structures, and a headrest is installed inside the tube structure. The headrest can be embedded in the upper part of the main backrest body, so that the headrest surface is smoothly connected to the plane of the main backrest body.

[0011] As a further embodiment of the present invention: a support base structure is fixedly provided between the two side plates, and a support pad is provided on the upper plane of the connecting rod of the support base structure for effectively supporting the seat cushion body or the main backrest body that is flipped onto the support base.

[0012] As a further aspect of the present invention: the backrest angle adjuster has a 0-180 degree adjustment and locking mechanism, so that the main backrest, i.e. the main body, can be locked horizontally backward or horizontally forward, making it easy to convert the seat into a bed.

[0013] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0014] The seat of this invention includes a main backrest frame, a secondary backrest frame, and a seat cushion frame. The seat cushion frame can be adjusted by flipping one end of the seat cushion connecting plate relative to the side plate forward. The main backrest frame can be adjusted by flipping the other end of the seat cushion connecting plate relative to the side plate forward. The secondary backrest frame can be adjusted by flipping backward. This adjustment method is simple to operate. After the seat cushion body and the main backrest frame are flipped forward, the concave and convex surfaces of the sponge face down and the flat back surface faces up, so that the back of the backrest and the back of the seat cushion are on the same horizontal plane, making the seat comfortable and free of foreign objects. Moreover, the sponge shape is retained when the seat is in use, which is ergonomic.

[0015] This invention features a connecting structure on the back of the seat back, with an additional backrest installed. When the seat is converted into a bed, the additional backrest flips backward 90 degrees, making it flush with the back of the seat back and the back of the seat cushion. This increases the overall size of the converted bed. The seat cushion can only be flipped without any arbitrary angle locking, making operation simple. A pin is used instead of the core component as the flipping center, saving the need for a pair of 0-180 degree adjustable bidirectional locking angle adjusters. The overall structure is simple, with fewer bed-changing actions, enabling rapid bed conversion.

[0016] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0018] Figure 1 This is a diagram of the assembly in the riding state of the present invention;

[0019] Figure 2 This is a diagram of the forward-tilting variable bed assembly of the present invention;

[0020] Figure 3 This is a side view of the frame in the riding state of the present invention;

[0021] Figure 4 This is a schematic diagram of the seat cushion frame flipping according to the present invention;

[0022] Figure 5 This is a structural diagram of the skeleton in the riding state of the present invention;

[0023] Figure 6 This is a skeleton diagram of the forward-tilting variable bed state of the present invention;

[0024] Figure 7 This is a partial enlarged view of point A in the present invention.

[0025] In the diagram: 1. Headrest; 2. Secondary backrest body; 3. Main backrest body; 4. Seat cushion body; 5. Side panel; 6. Front and rear sliding locking rod; 7. Secondary backrest frame; 8. Main backrest frame; 9. Seat cushion frame; 10. Flip hinge; 11. Backrest adjustment handle; 12. Backrest angle adjuster; 13. Swing plate; 14. Seat cushion connecting plate; 15. Swing side connecting pin; 16. Swing mating rod one; 17. Mating slide groove; 18. Swing seat connecting pin; 19. Mating irregular groove; 20. Swing mating rod two.

[0026] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] like Figures 1 to 7As shown, the quick-change bed chair with a forward-swinging and folding seat cushion includes a main backrest frame 8 and a seat cushion frame 9. Seat cushion connecting plates 14 are symmetrically fixed on both sides of the main backrest frame 8. One end of the seat cushion connecting plate 14 is rotatably connected to a swing plate 13, and the other end of the swing plate 13 is rotatably connected to the lower end of a side panel 5. The main backrest frame 8 is installed on the inner side of the other end of the side panel 5. A secondary backrest frame 7 is provided on the outer side of the main backrest frame 8. A secondary backrest body 2 is covered on the outer side of the secondary backrest frame 7, and a main backrest body 3 is covered on the outer side of the main backrest frame 8. A seat cushion body 4 is covered on the outer side of the seat cushion frame 9. The swing plate... The 13 and the seat cushion connecting plate 14 are rotatably connected by a swing seat connecting pin 18. A swing mating rod 20 is fixedly installed on the seat cushion connecting plate 14 on the side of the swing seat connecting pin 18. A mating groove 19 is opened on the side of the swing plate 13 located on the side of the swing seat connecting pin 18. The swing mating rod is mated in the mating groove. The swing plate 13 and the side plate 5 are rotatably connected by a swing side connecting pin 15. A swing mating rod 16 is fixedly installed on the swing plate 13 at the upper position of the swing side connecting pin 15. A mating groove 17 is provided on the side plate 5. The swing mating rod 16 is mated in the mating groove 17.

[0029] Among them, the matching groove 17 is an arc-shaped groove structure. The diameter of the upper arc of the matching groove 17 is the same as the groove width, and the diameter of the lower arc of the matching groove 17 is greater than the groove width. When the seat body 4 is flipped forward to a horizontal state, the swing matching rod 16 moves to the upper position of the matching groove 17. The matching of the swing matching rod 16 and the matching groove 17 can limit the rotation adjustment of the swing plate 13 relative to the side plate 5.

[0030] The mating groove is provided with recesses on both sides of the connecting pin 18 of the swing seat. When the seat frame 9 is adjusted to the sitting state or the forward-folding bed state, the swing mating rod 20 is located in the corresponding recess of the mating groove 19 for limiting.

[0031] A backrest adjuster 12 is provided between the main backrest frame 8 and the side panel 5. The lower outer part of the connection end between the main backrest frame 8 and the side panel 5 is rotatably connected to the secondary backrest frame 7 through a flip hinge 10. A backrest adjustment handle 11 is provided on the outer side of the side panel 5 for adjusting the backrest in conjunction with the backrest adjuster.

[0032] A front-to-back sliding locking rod 6 is provided below the seat cushion body 4. The front foam of the main backrest body 3 and the seat cushion body 4 is made into an ergonomic foam shape, and the back foam of the main backrest body 3 and the seat cushion body 4 is made into a flat surface. After the seat cushion body 4 is flipped forward 180 degrees, the main backrest body 3 is also flipped forward, so that the back of the main backrest body 3 and the back of the seat cushion body 4 are on the same horizontal plane, making the bed comfortable and free of foreign objects.

[0033] The main backrest frame 8 is provided with two sets of square hollow insert structures. A headrest 1 is installed inside the insert structure. The headrest 1 can be embedded in the upper part of the main backrest body 3, so that the surface of the headrest 1 is smoothly connected to the plane of the main backrest body 3.

[0034] A support frame structure is fixedly installed between the two side plates 5. A support pad is provided on the upper plane of the connecting rod of the support frame structure to effectively support the seat cushion body 4 or the main backrest body 3 that has been flipped onto the support frame.

[0035] The backrest angle adjuster 12 has a 0-180 degree adjustment and locking mechanism, which allows the main backrest, i.e. the main body, to be locked horizontally backward or forward, making it easy to convert the seat into a bed.

[0036] The working principle of this invention is:

[0037] Example 1: As shown in the attached document Figure 1 As shown, the seat cushion body 4 is located on the support frame structure between the two side panels 5. The main backrest body 3 can be tilted relative to the side panels 5 by the backrest angle adjuster 12 to different backrest tilt states. The outer support front of the seat cushion body 4 and the main backrest body 3 are both provided with corresponding sponge shapes to make the seat comfortable.

[0038] Example 2: When adjusting the seat to a bed position, firstly, the seat cushion body 4 is rotated forward 180 degrees. During the rotation, the seat cushion connecting plate 14 rotates relative to the swing plate 13 along the swing seat connecting pin 18, causing the swing mating rod 20 to be adjusted to the upper recess of the mating groove in this state, thus limiting the rotation of the seat cushion connecting plate 14 relative to the swing plate 13. At the same time, the swing plate 13 also rotates relative to the side plate 5 along the swing side connecting pin 15. The swing mating rod 16 on the swing plate 13 moves along the mating groove 17. When the seat cushion body 4 is rotated forward to a horizontal state, the swing mating rod 16 is located at the upper arc position of the mating groove 17, effectively limiting the rotation of the swing plate 13 relative to the side plate 5, thereby ensuring good stability when the seat cushion body 4 is rotated forward to a horizontal state. The adjustment state is shown in the attached figure. Figure 4 ;

[0039] Next, the main backrest body 3 is flipped forward using the backrest adjuster, so that it flips forward to the position where the seat cushion body 4 is when seated. The support frame structure supports the main backrest body 3 in its forward-flipped state. The secondary backrest body 2 is then flipped backward, and it rotates along the flip hinge 10 to a horizontal position, thus adjusting the entire seat to a horizontal position. The adjustment state is shown in the appendix. Figure 2 ;

[0040] The process of transforming the chair into a bed is simple. When transformed into a bed, the size is increased, making it more suitable for rest. The front foam of the main backrest body 3 and the seat cushion body 4 is ergonomically shaped, while the back foam of the main backrest body 3 and the seat cushion body 4 is made flat. When flipped and adjusted to the bed position, the back of the main backrest body 3 and the back of the seat cushion body 4 are on the same horizontal plane. After transforming into a bed, the foam is flat and comfortable, without any foreign object feeling, increasing comfort.

[0041] The angle adjuster is replaced with a 0-180 degree adjustable two-way locking angle adjuster. Unlocking the handle allows the backrest to be laid flat facing forward or backward. Flat foam is added to the back of the backrest and the back of the seat cushion. This allows the seat to be used for sitting and resting from both the front and back. A secondary backrest body 2 is added to the back of the main backrest body 3. When in the sitting position, the secondary backrest body 2 can be locked behind the main backrest body 3. The locking structure is not limited, as long as it meets the locking requirements. When converted into a bed, the secondary backrest body 2 can be freely rotated to be level with the backrest and seat cushion.

[0042] The seat cushion can only be flipped and does not lock at any angle, making it easy to operate. Using a pin instead of the core component as the flipping center can save a pair of 0-180 degree adjustable bidirectional locking angle adjusters, reducing costs. The pin instead of the core component reduces the number of processing steps and improves worker productivity.

[0043] The seat of this invention includes a main backrest frame 8, a secondary backrest frame 7, and a seat cushion frame 9. The seat cushion frame 9 can be adjusted by flipping forward at one end of the seat cushion connecting plate 14 relative to the side plate 5. The main backrest frame 8 can be adjusted by flipping forward at the other end of the side plate 5. The secondary backrest frame 7 can be adjusted by flipping backward. This adjustment method is simple to operate. After the seat cushion body 4 and the main backrest frame 8 are flipped forward, the concave and convex surfaces of the sponge face down, and the flat back surface faces up, so that the back of the backrest and the back of the seat cushion are on the same horizontal plane, making the seat more comfortable. There is no foreign body sensation, and the foam shape of the seat is preserved when sitting, which is ergonomic. The invention adds a secondary backrest by designing a connecting structure on the back of the backrest. When the seat is converted into a bed, the secondary backrest flips backward 90 degrees, so that it is on the same plane as the back of the backrest and the back of the seat cushion, thereby increasing the overall size of the seat-to-bed conversion. The seat cushion can only be flipped and is not locked at any angle, making operation simple. A pin is used instead of the core component as the flipping center, which can save a pair of 0-180 degree adjustable bidirectional locking angle adjusters. The overall structure is simple, the bed conversion action is minimal, and the bed conversion function can be realized quickly.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A convertible bed chair with a forward-swinging and folding seat cushion, comprising a main backrest frame (8) and a seat cushion frame (9), characterized in that, The main backrest frame (8) is symmetrically fixed with seat cushion connecting plates (14) on both sides. The seat cushion connecting plate (14) is rotatably connected to one end of the swing plate (13). The other end of the swing plate (13) is rotatably connected to the lower end of the side plate (5). The main backrest frame (8) is installed on the inner side of the other end of the side plate (5). The main backrest frame (8) is provided on the outer side of the main backrest frame (8). The outer side of the secondary backrest frame (7) is covered with the secondary backrest body (2). The outer side of the main backrest frame (8) is covered with the main backrest body (3). The outer side of the seat cushion frame (9) is covered with the seat cushion body (4). The swing plate (13) and the seat cushion connecting plate (14) are connected by a swing seat. The connecting pin (18) is rotatably connected. A second swing fitting rod (20) is fixedly provided on the seat cushion connecting plate (14) on the side of the connecting pin (18). A matching groove (19) is provided on the swing plate (13) at the side position of the connecting pin (18). The swing fitting rod is fitted in the matching groove. The swing plate (13) and the side plate (5) are rotatably connected by the swing side connecting pin (15). A first swing fitting rod (16) is fixedly provided on the swing plate (13) at the upper position of the swing side connecting pin (15). A matching slide groove (17) is provided on the side plate (5). The first swing fitting rod (16) is fitted in the matching slide groove (17).

2. The quick-convertible bed chair with a forward-swinging and flip-over seat cushion according to claim 1, characterized in that, The matching groove (17) is an arc-shaped groove structure. The diameter of the upper arc of the matching groove (17) is the same as the groove width. The diameter of the lower arc of the matching groove (17) is greater than the groove width. The seat body (4) is flipped forward to a horizontal state. The swing matching rod (16) moves to the upper position of the matching groove (17). The swing matching rod (16) and the matching groove (17) are matched.

3. The quick-convertible bed chair with a forward-swinging and flip-over seat cushion according to claim 2, characterized in that, The mating groove is located on both sides of the swing seat connecting pin (18) and has a corresponding recess. When the seat frame (9) is adjusted to the sitting state and the forward-folding bed state, the swing mating rod (20) is located in the corresponding recess of the mating groove (19).

4. The quick-convertible bed chair with a forward-swinging and flip-over seat cushion according to claim 3, characterized in that, A backrest angle adjuster (12) is provided between the main backrest frame (8) and the side panel (5). The lower outer part of the connection end between the main backrest frame (8) and the side panel (5) is rotatably connected to the secondary backrest frame (7) through a flip hinge (10). A backrest adjustment handle (11) is provided on the outer side of the side panel (5).

5. The quick-convertible bed chair with a forward-swinging and flip-over seat cushion according to claim 4, characterized in that, A front-to-back locking rod (6) is provided below the main seat body (4). The front foam of the main backrest body (3) and the main seat body (4) is ergonomically shaped. The back foam of the main backrest body (3) and the main seat body (4) is made flat. After the main seat body (4) is rotated 180 degrees forward, the main backrest body (3) is rotated 90 degrees forward, so that the back of the main backrest body (3) and the back of the main seat body (4) are on the same horizontal plane.

6. The quick-convertible bed chair with a forward-swinging and flip-over seat cushion according to claim 5, characterized in that, The main backrest frame (8) is provided with two sets of square hollow tube structures, and a headrest (1) is installed inside the tube structure. The headrest (1) can be embedded in the main backrest body (3) so that the surface of the headrest (1) is smoothly connected to the plane of the main backrest body (3).

7. The quick-convertible bed chair with a forward-swinging and flip-over seat cushion according to claim 6, characterized in that, A support frame structure is fixedly installed between the two side plates (5), and a support pad is provided on the upper plane of the connecting rod of the support frame structure.

8. The quick-convertible bed chair with a forward-swinging and flip-over seat cushion according to claim 7, characterized in that, The backrest angle adjuster (12) has a 0-180 degree adjustment and locking mechanism.

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