A bracket for a car seat / reclining structure

Abstract

This utility model relates to the field of RVs and discloses a support frame for a vehicle's reclining structure. The structure includes a back frame, a seat frame, and a leg frame connected by a hinge assembly. The hinge assembly includes a middle upper connecting plate fixed to the upper end of the seat frame and a back connecting plate fixed to the lower end of the back frame. The middle upper connecting plate and the back connecting plate are hinged together, with the connection center being the hinge connection point. The hinge connection point is located below the seat frame, and there is a gap between the hinge connection point and the upper edge of the seat frame. This utility model sets the dimensions of the back frame, seat frame, and leg frame to meet the dimensions required for a bed when in a reclining state. Then, the hinge connection point is set below the seat frame, so that when the back frame swings upward, it encroaches on the space in front of the seat frame, allowing the longer seat frame to better adapt to the size required for the seat. At the same time, the gap between the hinge connection point and the upper end of the seat frame allows the lower end of the back frame to encroach on the vertical space of the seat frame, avoiding too much gap between the back frame and the seat frame, making both the seated and reclining states more comfortable.

Description

Technical Field

[0001] This utility model relates to the field of RVs, specifically a bracket for a vehicle seating / reclining structure. Background Technology

[0002] As the RV market expands, the demand for RV modifications also increases. Consumers want to utilize the space inside the RV to accommodate both seating and sleeping needs. Therefore, they often need to modify RVs with folding seats to create seating and sleeping areas by folding and unfolding the seats, thus accommodating both sitting and lying down needs.

[0003] However, existing car seat brackets cannot meet the required length and angle requirements, making it difficult to lay flat and unfold. Furthermore, the combined dimensions of the seating area and backrest area are insufficient to meet the length requirements of a bed. Therefore, a seating and reclining structure bracket specifically designed for motorhomes is needed to simultaneously meet the needs of both a seat and a bed. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides a support frame for a car seat / reclining structure. The structure includes a backrest, a seat, and a leg rest arranged sequentially with intervals between them. The seat and backrest, and the backrest and leg rest are sway-connected by a hinge assembly. The front of the seat, backrest, and leg rest is used for covering and padding. The hinge assembly includes a middle upper connecting plate and a back connecting plate. The middle upper connecting plate is fixedly installed on the upper end of the seat frame, and the back connecting plate is fixedly installed on the lower end of the back frame. The middle upper connecting plate and the back connecting plate are hinged together, and the center of the connection is set as the hinge connection point. The hinge connection point is located on the side of the seat frame, and there is a gap between the hinge connection point and the upper edge of the seat frame. The back panel extends downward from the lower end of the back frame, the seat frame is horizontal, and the hinge connection point is located below the seat frame.

[0005] Furthermore, the backrest is in a horizontal, flat position, and the backrest and seat are at the same horizontal height. The vertical distance from the surface of the padding on the front of the seat to the hinge connection point is greater than the vertical distance between the hinge connection point and the upper edge of the seat.

[0006] Furthermore, the sum of the vertical distance between the hinge connection point and the edge of the upper end of the seat frame, and the vertical distance from the surface of the padding on the back frame to the hinge connection point, is greater than one-third of the length of the seat frame.

[0007] Furthermore, the length of the middle frame is greater than or equal to 75cm, the length of the back frame is greater than or equal to 65cm, and the thickness of the padding is greater than 10cm.

[0008] Furthermore, the hinge assembly includes a lower middle connecting plate and a rear connecting plate, the lower middle connecting plate being fixedly installed at the lower end of the seat frame, and the rear connecting plate being fixedly installed at the upper end of the leg frame.

[0009] Furthermore, the connection center between the lower middle connecting plate and the tail connecting plate also serves as the second hinge connection point. The second hinge connection point between the lower middle connecting plate and the tail connecting plate is located above the seat frame, and the height of the top of the cushion on the seat frame is higher than the height of the top of the lower middle connecting plate.

[0010] Compared with the prior art, the present invention has the following beneficial effects: This utility model provides a support frame that forms a foldable reclining structure by setting a back frame, a seat frame, and a leg frame that are hinged together in sequence. The dimensions of the back frame, seat frame, and leg frame in the reclining state are set to meet the dimensions required for a bed. The hinge connection point of the back frame and the seat frame is located below the seat frame, so that when the back frame swings upward into the seat position in the reclining state, it can encroach on the space in front of the seat frame, making the space available for sitting less than the length of the seat frame. This allows a longer seat frame to better adapt to the dimensions required for a seat. At the same time, the hinge connection point is spaced apart from the upper end of the seat frame, so that when the back frame swings upward into the seat position in the reclining state, the lower end of the back frame can encroach on the vertical space of the seat frame. After swinging, the lower end of the back frame maintains a low horizontal height, avoiding too much gap between the back frame and the seat frame, thus making both the seated and reclining states more comfortable. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the vehicle seat / reclining structure bracket of this utility model.

[0012] Figure 2 This is a three-dimensional structural diagram of a support for a vehicle seating / reclining structure according to the present invention.

[0013] Figure 3 This is a schematic diagram illustrating the state transition of a vehicle seat / reclining structure bracket according to the present invention.

[0014] In the diagram: A. Cushion; 1. Seat frame; 2. Backrest; 3. Leg support; 4. Hinge assembly; 5. Drive motor; A1. Clearance groove; 41. Upper middle connecting plate; 42. Back connecting plate; 43. Bearing; 44. Tail connecting plate; 45. Lower middle connecting plate; 46. Extension fixing plate; 4a. Hinge connection point. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0016] Examples, such as Figures 1-3 As shown: This utility model provides a support for a car seat / reclining structure. The structure includes a back frame 2, a seat frame 1, and a leg frame 3 arranged sequentially with intervals between them. The seat frame 1 serves as the seat board of the seat formed by the support, while the back frame 2 is the backrest of the seat formed by the support, and the leg frame 3 is the leg rest of the seat formed by the support. The back frame 2, seat frame 1, and leg frame 3 are all made of square tube welded into a frame structure. The seat frame 1 and the back frame 2, and the back frame 2 and the leg frame 3 are swayed and connected by a hinge assembly 4. The support has two states: a seated state and a reclining state. The front of the seat frame 1, the back frame 2, and the leg frame 3 is used to cover the pad A for the user to sit or lie down. In this embodiment, the pad A covers the back of the seat frame 1, the back frame 2, and the leg frame 3 for a relatively complete wrapping. The hinge assembly 4 is provided with an avoidance groove A1. The hinge assembly 4 includes an upper middle connecting plate 41 and a back connecting plate 42. The upper middle connecting plate 41 is fixedly installed on the upper end of the seat frame 1 through an extension fixing plate 46, and the back connecting plate 42 is fixedly installed on the lower end of the back frame 2 through an extension fixing plate 46. A bearing 43 is nested between the upper middle connecting plate 41 and the back connecting plate 42 for hinge connection, and the center of the connection is set as the hinge connection point 4a, which is the center of the bearing 43. The upper middle connecting plate 41 and the back connecting plate 42 each have an annular tubular structure, which respectively nests the inner ring and outer ring of the bearing 43. In this embodiment, the back connecting plate 42 is located outside the upper middle connecting plate 41. A drive motor 5 is fixedly installed on the back connecting plate 42. The drive motor 5 is equipped with a transmission shaft, which passes through the back connecting plate 42 and is fixedly connected to the upper middle connecting plate 41, thereby driving the back connecting plate 42 and the upper middle connecting plate 41 to rotate relative to each other. The drive motor 5 is a geared motor, so that it forms a self-locking mechanism after driving the back connecting plate 42 to rotate. It should be noted that the seat frame 1 is horizontal, and the backrest 2 is in a horizontal and a flat position. In the flat position, the backrest 2 and the seat frame 1 are at the same horizontal height. The bottom of the seat frame 1 is used to connect to the slide rail, so that the frame can be moved through the slide rail when changing the seat position and the flat position, which increases the space for the backrest 2 to be reclined. The upper end and the lower end of the seat frame 1 are the end closer to the backrest 2 and the end closer to the leg frame 3, respectively. The sides of the seat frame 1 are the left and right sides of the seat frame 1. In this embodiment, the hinge connection point 4a is located on the side of the seat frame 1. There is a gap between the hinge connection point 4a and the upper edge of the seat frame 1. That is, there is a gap between the projection of the line connecting the hinge connection points 4a on both sides of the seat frame 1 on the horizontal plane and the projection of the upper edge of the seat frame 1 on the horizontal plane. This gap causes the back panel 42 to extend downward from the lower end of the back frame 2. The gap between the lower end of the back frame 2 and the upper end of the seat frame 1 is not in the same position as the line connecting the hinge connection points 4a on the horizontal projection. This allows the back frame 2 in the lying position to occupy the space in front of the seat frame 1 when it swings upward to enter the seat position, so that the space available for sitting on the seat frame 1 is less than the length of the seat frame 1. This allows the seat frame 1 to meet the length required to form a bed when the back frame 2 is lowered, and the seat frame 1 can shrink to the length required for the seat when the back frame 2 is raised, making the user more comfortable to sit on. In this embodiment, the hinge connection point 4a is spaced from the upper end of the seat frame 1, and the backrest plate 42 extends from the front to the back of the backrest 2. This allows the lower end of the backrest 2 to encroach on the vertical space of the seat frame 1 when the backrest 2 in a reclining state swings upward to enter a seated state. Specifically, if the hinge connection point 4a and the seat frame 1 are at the same horizontal height, a first circular trajectory is formed with the vertical line connecting the hinge connection point 4a and the lower end of the backrest 2 as the radius. The top of this trajectory is recorded as the first horizontal height. In this embodiment, the hinge connection point 4a is set below the seat frame 1. The top of the second circular trajectory is recorded as the second horizontal height. Obviously, the radius of the second circular trajectory will increase. However, the distance from the center of the second circular trajectory to the first horizontal height will be equal to the radius of the first circular trajectory plus the distance the center descends. This value will be greater than the radius of the second circular trajectory. Therefore, the lower end of the backrest 2 can encroach on the vertical space of the seat frame 1. After swinging, the lower end of the backrest 2 maintains a lower horizontal height, avoiding leaving too much gap.

[0017] It should be noted that the vertical distance from the surface of the padding A on the front of the seat frame 1 and the back frame 2 to the hinge connection point 4a is greater than the vertical distance between the hinge connection point 4a and the upper edge of the seat frame 1. That is, the front of the seat frame 1 and the back frame 2 are covered with padding A of the same thickness. The vertical distance is the length of a vertical line drawn from the hinge connection point 4a to the surface of the padding A. At the same time, the vertical distance from the front of the seat frame 1 and the back frame 2 to the hinge connection point 4a is less than the vertical distance between the hinge connection point 4a and the upper edge of the seat frame 1. Furthermore, the sum of the vertical distance between the hinge connection point 4a and the upper edge of the seat frame 1, and the vertical distance from the surface of the padding A on the back frame 2 to the hinge connection point 4a, is greater than one-third of the length of the seat frame 1. This ensures that at least one-third of the seat frame 1 is covered and placed behind the vertical back frame 2 when seated, allowing the seat frame 1 to shrink to the length required for the seat when the back frame 2 is raised, making the user more comfortable.

[0018] The hinge assembly 4 includes a lower middle connecting plate 45 and a rear connecting plate 44. The lower middle connecting plate 45 is fixedly installed at the lower end of the seat frame 1 by an extension fixing plate 46, and the rear connecting plate 44 is fixedly installed at the upper end of the leg frame 3 by an extension fixing plate 46. The upper middle connecting plate 41 and the lower middle and rear connecting plate 44 are also located outside the lower middle connecting plate 45. The connection center between the lower middle connecting plate 45 and the rear connecting plate 44 also serves as the second hinge connection point 4a. The second hinge connection point 4a between the lower middle connecting plate 45 and the rear connecting plate 44 is located above the seat frame 1. The height of the top of the pad A on the seat frame 1 is higher than the height of the top of the lower middle connecting plate 45, which reduces the thickness of the pad A covering the leg frame 3. Those skilled in the art can also adopt the same design method as the back connecting plate 42 according to actual needs.

[0019] In summary, in this embodiment, the length of the seat frame 1 covered with padding A is at least 75cm. After one-third is covered by the backrest 2, 50cm remains. In this embodiment, 80cm is used, leaving 53cm after one-third is covered by the backrest 2. This is comparable to the length of existing car seats, which is between 48cm and 56cm, meeting the needs of human seating. The length of the backrest 2 covered with padding A is at least 65cm. In this embodiment, it is set to 70cm, referencing existing car seats. The height of the seat surface of existing car seats from the floor is between 25cm and 35cm. In this embodiment, the leg support 3 covered with padding A is set to 30cm. Thus, the length of the bed formed by the seat frame 1 covered with padding A, the backrest 2, and the leg support 3 in a flat position is 180cm, meeting the needs of a bed in a motorhome. If the minimum size is used, the length of the bed is 170cm, which is also usable. In addition, the length of the headrest on the backrest 2 is calculated separately according to the needs of those skilled in the art, and is usually between 15cm and 20cm. At this point, the thickness of pad A on the seat frame 1 and back frame 2 is at least 10cm. After swinging the back frame 2 to be perpendicular to the seat frame 1, the length blocked on the seat frame 1 is equal to the sum of the thickness of pad A, the thickness of the back frame 2, the vertical distance from the back frame 2 to the hinge connection point 4a, and the vertical distance from the hinge connection point 4a to the upper edge of the seat frame 1. According to the first part of the instruction manual, the vertical distance between the hinge connection point 4a and the upper edge of the seat frame 1 is set to 10cm, and the vertical distance between the back frame 2 and the hinge connection point 4a is set to 6cm. Then, a square tube back frame 2 with a width of 2cm is used. The total sum can be greater than one-third of the length of the seat frame 1, which is 80cm. Therefore, by driving the back plate 42 to swing upward on the upper middle plate 41 and the tail plate 44 to swing downward on the lower middle plate 45, the support in the lying position can be transformed into a seat position for the user to sit on. When it is necessary to lie down, by controlling the back plate 42 to swing backward on the upper middle plate 41 and the tail plate 44 to swing upward on the lower middle plate 45, the support in the seat position can be transformed into a lying position, forming a bed of sufficient length for the user to lie down.

[0020] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A bracket for a vehicle's reclining seating structure, characterized in that: The structure includes a back frame, a seat frame, and a leg frame arranged sequentially with intervals between them. The seat frame and the back frame, and the back frame and the leg frame are sway-connected by a hinge assembly. The front of the seat frame, the back frame, and the leg frame is used to cover and padded the area. The hinge assembly includes a middle upper connecting plate and a back connecting plate. The middle upper connecting plate is fixedly installed on the upper end of the seat frame, and the back connecting plate is fixedly installed on the lower end of the back frame. The middle upper connecting plate and the back connecting plate are hinged together, and the center of the connection is set as the hinge connection point. The hinge connection point is located on the side of the seat frame, and there is a gap between the hinge connection point and the upper edge of the seat frame. The back panel extends downward from the lower end of the back frame, the seat frame is horizontal, and the hinge connection point is located below the seat frame.

2. The bracket for a vehicle seating / reclining structure according to claim 1, characterized in that: The backrest is in a horizontal, reclining position, in which the backrest and seat are at the same horizontal height. The vertical distance between the padding on the front of the seat frame and the hinge connection point is greater than the vertical distance between the hinge connection point and the upper edge of the seat frame.

3. The bracket for a vehicle seating / reclining structure according to claim 2, characterized in that: The sum of the vertical distance between the hinge connection point and the edge of the upper end of the seat frame, and the vertical distance from the surface of the padding on the back frame to the hinge connection point, is greater than one-third of the length of the seat frame.

4. A bracket for a vehicle seating / reclining structure according to claim 3, characterized in that: The length of the seat frame is greater than or equal to 75cm, the length of the back frame is greater than or equal to 65cm, and the thickness of the padding is greater than 10cm.

5. A bracket for a vehicle seating / reclining structure according to claim 1, characterized in that: The hinge assembly includes a lower middle connecting plate and a rear connecting plate. The lower middle connecting plate is fixedly installed at the lower end of the seat frame, and the rear connecting plate is fixedly installed at the upper end of the leg frame.

6. A bracket for a vehicle seating / reclining structure according to claim 5, characterized in that: The connection center between the lower middle connecting plate and the tail connecting plate also serves as the second hinge connection point. The second hinge connection point between the lower middle connecting plate and the tail connecting plate is located above the seat frame, and the height of the top of the cushion on the seat frame is higher than the height of the top of the lower middle connecting plate.

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