Novel double folding carriage seat cushion structure

Abstract

The utility model discloses a novel double folding carriage seat cushion structure, including the carriage, the one side of carriage is installed with backrest, the side of carriage near backrest is hinged with the seat cushion frame that can fold symmetrically, the both sides of seat cushion frame symmetrically install the limiting post, through the seat cushion frame of double folding design, the seat cushion width is greatly increased after unfolding, and the riding comfort is obviously improved in collocation sponge pad, and the problem of existing carriage seat cushion is too narrow is solved. In the folding state, the fixed buckle is accurately matched with the limiting post through the limiting hook plate and the limiting post, is fixed firmly and is not easy to loosen, effectively saves the carriage space. When unfolding, the stable support structure of the first plate body and the third plate body is used to the support seat, which ensures the stability of the seat cushion and prevents deformation, and improves the durability. The whole structure is simple, the unfolding and folding operation is convenient, and the height of the backrest assembly does not need to be increased, which does not affect the original effect of the whole vehicle, and the practicality and adaptability are very strong.

Description

Technical Field

[0001] This utility model relates to the field of vehicle seat cushion technology, specifically a novel double-fold vehicle seat cushion structure. Background Technology

[0002] In daily life, electric tricycles are the primary mode of transportation for most people in rural and urban areas. The seat is a core component of these tricycles. A suitable seat size can improve riding comfort. However, existing tricycle seat cushions are too narrow in width, resulting in discomfort. This invention provides a double-folding tricycle seat cushion structure without affecting the overall vehicle design or increasing the height of the backrest assembly.

[0003] To address this, a novel double-folding carriage seat cushion structure is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a novel double-folding carriage seat cushion structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel double-folding carriage seat cushion structure, comprising a carriage, a backrest installed on one side of the carriage, a symmetrically foldable seat cushion frame hinged to the side of the carriage near the backrest, limit posts symmetrically installed on both sides of the seat cushion frame, fixing buckles symmetrically installed on both sides of the bottom of the backrest for hooking the limit posts and restricting the seat cushion frame when folded, and support seats symmetrically installed on both sides of the carriage for supporting the position of the seat cushion frame when unfolded.

[0006] Preferably, the seat cushion frame includes a first frame and a second frame, one side of the first frame is hinged to the side of the carriage near the backrest by a hinge, and the first frame and the second frame are hinged together by a hinge.

[0007] Preferably, both the first frame and the second frame are fitted with sponge pads.

[0008] Preferably, the two limiting posts are symmetrically installed on both sides of the first frame.

[0009] Preferably, the fixing buckle includes a fixing plate, which is installed below the backrest. A limiting hook plate for hooking the limiting post is rotatably connected to the middle of the fixing plate, and a limiting protrusion for limiting the position of the limiting hook plate is installed below the fixing plate.

[0010] Preferably, the support base includes a second plate, which is installed on the inner side wall of the carriage. A first plate for supporting the seat cushion frame is hinged to the second plate by a pin. Two third plates for improving the support strength of the first plate are symmetrically installed below the first plate.

[0011] Compared with existing technologies, the advantages of this utility model are as follows: The double-folding seat frame significantly increases the seat width when unfolded, and combined with a sponge pad, it greatly improves seating comfort, solving the problem of excessively narrow seat cushions in existing vehicles. In the folded state, the fixing buckles precisely engage with the limiting hooks and limiting posts, ensuring a secure and stable hold, effectively saving space in the vehicle compartment. When unfolded, the support base, with the stable support structure of the first and third plates, ensures stable seat cushion support, preventing deformation and improving durability. The overall structure is simple, the unfolding and folding operations are convenient, and there is no need to increase the height of the backrest assembly, thus not affecting the original effect of the vehicle, making it highly practical and adaptable. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the seat cushion frame of this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the fixing buckle of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the support base of this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the seat cushion frame and the carriage of this utility model;

[0017] Figure 6 This is a schematic diagram of the structure of the present invention when the fixing buckle hooks onto the limiting post;

[0018] Figure 7 This is a schematic diagram of the structure of the seat cushion of this utility model when unfolded;

[0019] Figure 8 This is a schematic diagram of the structure of the seat cushion of this utility model after folding.

[0020] In the diagram: 1. Carriage; 2. Backrest; 3. Fixing buckle; 31. Fixing plate; 32. Limiting hook plate; 33. Limiting protrusion; 4. Support seat; 41. First plate; 42. Second plate; 43. Third plate; 5. Limiting post; 6. Seat cushion frame; 61. First frame; 62. Second frame. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] Please see Figure 1-8This utility model provides a technical solution: a novel double-folding carriage seat cushion structure, including a carriage 1, a plate-like backrest 2 vertically fixedly installed on one side of the carriage 1, a symmetrically foldable seat cushion frame 6 hinged to the inner wall of the carriage 1 near the backrest 2, cylindrical limiting posts 5 symmetrically fixedly installed on the left and right sides of the seat cushion frame 6, and fixing buckles 3 symmetrically fixedly installed on the left and right sides of the bottom of the backrest 2. The fixing buckles 3 can hook the limiting posts 5 through their own structure after the seat cushion frame 6 is folded towards the backrest 2, thereby limiting and fixing the seat cushion frame 6 in the folded state and preventing it from unfolding on its own. Support seats 4 are symmetrically fixedly installed on the inner walls of the left and right sides of the carriage 1. The support seats 4 can support the bottom of the seat cushion frame 6 after the seat cushion frame 6 is fully unfolded, ensuring the horizontal state and load-bearing stability of the seat cushion frame 6 after unfolding.

[0023] like Figure 2 As shown: The seat cushion frame 6 includes a first frame 61 and a second frame 62 with a rectangular frame structure. The side of the first frame 61 closest to the backrest 2 is hinged to the carriage 1. The side of the first frame 61 furthest from the backrest 2 is hinged to the side of the second frame 62 closest to the first frame 61, allowing the second frame 62 to fold around the hinge towards the lower surface of the first frame 61, thus achieving a symmetrical folding function for the entire seat cushion frame 6. Flexible sponge pads are installed on the upper surfaces of both the first frame 61 and the second frame 62 by adhesive or bolts. Two limiting posts 5 are symmetrically fixed on the left and right sides of the first frame 61. The outer circumferential surface of the limiting posts 5 is smooth, facilitating structural adaptation and engagement with the fixing buckles 3.

[0024] like Figure 3 As shown: The fixing buckle 3 includes a fixing plate 31 in the shape of a vertical plate. The fixing plate 31 is fixedly installed on the bottom outer wall of the backrest 2 by bolts. The middle part of the fixing plate 31 is rotatably connected to a limiting hook plate 32 through a rotating shaft. The free end of the limiting hook plate 32 is provided with an arc-shaped groove that matches the outer peripheral surface of the limiting post 5. A limiting protrusion 33 is fixedly installed below the fixing plate 31. The limiting protrusion 33 is located below the limiting hook plate 32 and is used to limit the downward rotation angle of the limiting hook plate 32.

[0025] like Figure 4 and Figure 5As shown: The support base 4 includes a second plate 42 in the shape of a vertical plate. The second plate 42 is fixedly installed on the inner wall of the carriage 1 by welding or bolts. The upper part of the second plate 42 is hinged to a first plate 41 in the shape of a horizontal plate by a pin. The upper surface of the first plate 41 is a flat surface, which is used to fit and support the bottom of the unfolded second frame 62. Two third plates 43 are symmetrically fixedly installed on the lower surface of the first plate 41. One side of the two third plates 43 is integrally formed on the lower surface of the first plate 41, and the other side abuts against the surface of the second plate 42 to form a stable support structure, so as to improve the load-bearing strength and support stability of the first plate 41.

[0026] Working principle: Before unfolding, the seat frame 6 is in a vertically folded state. The limiting hook plate 32 of the fixing buckle 3 hooks onto the limiting posts 5 on both sides of the first frame 61, ensuring the stability of the folded state. When unfolding, the operator needs to use their fingers to lift the free end of the limiting hook plate 32 upwards, so that it rotates upwards around the pivot on the fixing plate 31. At this time, the arc-shaped groove of the limiting hook plate 32 separates from the limiting post 5, and the limiting post 5 loses its constraint. Then, the second frame 62 is pulled outwards, so that it rotates around the hinge connected to the first frame 61 until the second frame 62 and the first frame 61 are on the same horizontal plane, forming a complete horizontal seat surface. At this time, the bottom of the second frame 62 is in contact with the upper surface of the first plate 41 of the support base 4, thus providing reliable support for the entire seat frame 6.

[0027] During folding, the operator holds the front end of the second frame 62 with both hands and lifts it upwards, causing it to rotate around the hinge towards the lower surface of the first frame 61, achieving symmetrical folding of the seat cushion frame 6. Then, the folded seat cushion frame 6 is rotated towards the backrest 2, gradually turning the entire seat cushion frame 6 into a vertical position. During this process, the limiting hook plate 32 of the fixing buckle 3 needs to be lifted upwards again to prevent it from colliding with the limiting post 5. When the seat cushion frame 6 can no longer rotate, the limiting hook plate 32 is released, allowing it to rotate downwards under its own weight until the arc-shaped groove is tightly fitted with the limiting post 5. This firmly locks the limiting post 5, ensuring that the seat cushion frame 6 will not loosen or unfold on its own in the folded state.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel double-folding carriage seat cushion structure, comprising a carriage (1), wherein a backrest (2) is installed on one side of the carriage (1), characterized in that: The carriage (1) has a symmetrically foldable seat cushion frame (6) hinged on the side near the backrest (2). Limiting posts (5) are symmetrically installed on both sides of the seat cushion frame (6). Fixing buckles (3) are symmetrically installed on both sides of the bottom of the backrest (2) to hook the limiting posts (5) and restrict the seat cushion frame (6) when it is folded. Support seats (4) are symmetrically installed on both sides of the carriage (1) to support the position of the seat cushion frame (6) when it is unfolded.

2. The novel double-folding carriage seat cushion structure according to claim 1, characterized in that: The seat cushion frame (6) includes a first frame (61) and a second frame (62). One side of the first frame (61) is hinged to the side of the carriage (1) near the backrest (2) by a hinge. The first frame (61) and the second frame (62) are hinged together by a hinge.

3. The novel double-folding carriage seat cushion structure according to claim 2, characterized in that: Both the first frame (61) and the second frame (62) are fitted with sponge pads.

4. The novel double-folding carriage seat cushion structure according to claim 2, characterized in that: The two limiting posts (5) are symmetrically installed on both sides of the first frame (61).

5. The novel double-folding carriage seat cushion structure according to claim 1, characterized in that: The fixing buckle (3) includes a fixing plate (31), which is installed below the backrest (2). A limiting hook plate (32) for hooking the limiting post (5) is rotatably connected to the middle of the fixing plate (31). A limiting protrusion (33) for limiting the position of the limiting hook plate (32) is installed below the fixing plate (31).

6. The novel double-folding carriage seat cushion structure according to claim 1, characterized in that: The support base (4) includes a second plate (42), which is installed on the inner wall of the carriage (1). A first plate (41) for supporting the seat cushion frame (6) is hinged to the second plate (42) by a pin. Two third plates (43) for improving the support strength of the first plate (41) are symmetrically installed below the first plate (41).

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