Wheel type take-out vehicle seat cushion device

Abstract

The invention discloses a wheel type take-out bicycle seat cushion device which is arranged on the rear end side of a bicycle frame and comprises a front seat cushion and a rear seat cushion which are arranged in a sectional mode, the front seat cushion is fixed to the bicycle frame, and the rear seat cushion is movably arranged on the bicycle frame. A base is fixedly connected to a frame, a mounting seat is fixedly connected to the base, at least three birdmouths which are arranged at intervals are formed in the rear end side of the mounting seat, and strip-shaped vertical limiting holes are formed in the positions, on the front sides of the birdmouths, of the mounting seat. The rear seat cushion is fixedly connected to the rear seat frame, a limiting rod and a bearing rod are arranged on the front end side of the rear seat frame side by side, the bearing rod is located on the rear side of the limiting rod, the limiting rod is movably inserted into the limiting hole, and the bearing rod is used for being supported in the bearing opening. The supporting body is movably arranged on the base, a sliding piece and a sliding rail are arranged between the base and the supporting body, the sliding rail is arranged in the front-back direction of the frame, and the supporting body moves towards the outer side of the base or moves towards the inner side of the base through movement of the sliding piece on the sliding rail.

Description

Technical Field

[0001] The invention relates to a wheeled vehicle, in particular to a seat cushion device on a wheeled takeaway vehicle. Background Art

[0002] The takeaway industry is booming, providing a large number of job opportunities. The emergence of a large number of takeaway drivers is a reflection of the booming development of this industry. The main riding tool for takeaway drivers is an electric vehicle, and the toolbox used to hold the takeaway is generally fixed on the back seat. Due to the different types of takeaways delivered, the corresponding toolbox size will vary. On existing electric vehicles, the installation area that can be provided by the back seat position is fixed, which cannot adapt well to the installation and fixation requirements of toolboxes of different sizes.

[0003] A Chinese patent document (publication number: CN 202320605U) discloses a novel foldable backrest rear seat for an electric tricycle, which is composed of a seat cushion frame, a backrest frame, limiting side ears, fastening bolts, a fastening shaft, a latch, and a retaining groove. It is characterized in that limiting side ears are arranged on both sides of the seat cushion frame close to the rear end, and the limiting side ears are directly welded to both sides of the seat cushion frame. A U-shaped connecting pipe is arranged at the end of the side rod of the backrest frame, and a connecting hole is arranged at the end of the connecting pipe. Fastening shafts are arranged on both sides of the seat cushion frame, and the fastening shafts can pass through the connecting holes and enable the backrest frame to be flipped 90°. The patented backrest can realize the function of 180° flipping, which can effectively save space when stored, is convenient for operation and storage, and is particularly suitable for outdoor travel and family collection and storage.

[0004] This foldable backrest type rear seat is only for adapting to the different driving and riding requirements of the tricycle, and cannot be well applied to the food delivery industry, and cannot be changed accordingly according to the actual installation size requirements of the tool box. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a rear seat cushion device for a wheeled takeaway vehicle, which can be changed according to different installation size requirements of a tool box, has a novel structure, and is convenient to change in use state.

[0006] In order to solve the technical problem, the technical solution of the present invention is: a seat cushion device of a wheeled takeaway vehicle, which is arranged at the rear end side of the frame, including a front seat cushion and a rear seat cushion arranged in sections, the front seat cushion is fixed on the frame, and the rear seat cushion is movably arranged on the frame, characterized in that it includes: A base, fixedly connected to the frame; The mounting seat is fixedly connected to the base, and the rear end side of the mounting seat is provided with at least three spaced-apart receiving interfaces, and the mounting seat is provided with a strip-shaped limiting hole on the front side of the receiving interface, and the limiting hole is arranged vertically; Rear seat frame, the rear seat cushion is fixedly connected to the rear seat frame. A limiting rod and a receiving rod are arranged in parallel on the front side of the rear seat frame. The receiving rod is located behind the limiting rod. The limiting rod is movably inserted into the limiting hole. The receiving rod is used to support in different receiving interfaces respectively, so that the rear seat cushion can be switched and arranged in the horizontal direction, inclined direction and vertical direction. Support body, which is movably arranged on the base. A sliding member and a slide rail are arranged between the base and the support body. The slide rail is arranged along the front-back direction of the vehicle frame. The support body moves outward or inward relative to the base by the movement of the sliding member on the slide rail.

[0007] The front seat cushion is arranged in front of the rear seat cushion for the rider of the food delivery vehicle to sit on, and the rear seat cushion can be flipped according to actual needs. After the rear seat cushion is completely lowered, that is, when the rear seat cushion is in a horizontal state, people can sit on the rear seat cushion. If it is necessary to carry a toolbox at this time, the support body can be pulled out to the outside of the base, and the toolbox can be installed on the support body. If there is no need to carry items, the support body can also be pushed towards the base. When the rear seat cushion is in an inclined or vertical state, the rear seat cushion can be used as a backrest. At this time, if it is necessary to carry items, the items such as the food delivery toolbox can be fixed to the base. In order to adapt to the fixing of a large-sized food delivery box, the support body can also be pulled outwards. By changing the position of the limiting rod in the limiting hole, the receiving cooperation between the receiving rod and different receiving interfaces can be adapted.

[0008] Further, the lowermost receiving interface is L-shaped, and this receiving interface is used to support the receiving rod on the rear seat frame in the horizontal direction. The L-shaped receiving interface can not only provide stable receiving cooperation for the receiving rod, but also well adapt to the fine adjustment of the front-back position of the rear seat cushion, and well meet the actual use requirements.

[0009] Further, a tension spring is arranged between the mounting seat and the front end of the rear seat frame, and the tension spring is used to pull the front end of the rear seat frame downward. Through the arrangement of the tension spring, the stable receiving cooperation between the receiving rod and the receiving interface can be achieved, and the flipping of the rear seat cushion is also made convenient.

[0010] Further, the mounting seat is in a C shape, the receiving interfaces are arranged in pairs on the mounting seat, a fixed seat is fixedly connected to the base, one end of the tension spring is connected to the fixed seat, and the other end is connected to the limiting rod. This mounting seat can well adapt to the stable support requirement of the receiving interface for the receiving rod, and the position stability of the rear seat cushion on the mounting seat is good.

[0011] Further, a fixing rod is fixedly connected to the front end of the base, and a support plate is provided at the middle position of the base. The fixing rod and the support plate are both arranged along the width direction of the vehicle frame. The fixing seat is fixedly connected to the fixing rod, and the support plate is used to support the rear seat frame in the horizontal direction. The arrangement of the fixing rod facilitates the fixation of the fixing seat. Through the arrangement of the support plate, stable support can also be provided for the rear seat cushion, making the position stability of the rear seat cushion in the horizontal direction good, facilitating the load-bearing of the rear seat cushion, and also facilitating the setting of a pull-out support body on the base.

[0012] Further, an installation groove is provided on the base, and the installation groove is arranged along the front-back direction of the vehicle frame. The support body is installed in the installation groove. By providing the installation groove, the installation of the support body can be well adapted, the cooperation degree between the support body and the base is high, and it is also convenient to completely accommodate the support body into the installation groove, making the overall structural compactness good.

[0013] Further, the slide rail includes a strip-shaped upper pressing piece and a lower pressing piece. The cross-section of the upper pressing piece is L-shaped, and the upper pressing piece is buckled on the lower pressing piece. A sliding groove is formed between the upper pressing piece and the lower pressing piece, and the sliding member is inserted into the sliding groove with a gap. This kind of slide rail structure is simple, convenient to form the sliding groove, the cooperation stability between the support body and the installation seat is good, and the support body is not easy to break away from the base.

[0014] Further, the support body is plate-shaped, and the cross-section of the support body is in a "冂" shape. A row of fixing columns extending outward from the support body are respectively fixedly connected to the two side parts of the support body. The sliding member is a hollow cylindrical shape, and one fixing column is sleeved with a sliding member with a gap; an outward protruding ring is integrally formed at one end of the sliding member facing the support body, and the outer diameter of the outward protruding ring is larger than the width of the sliding groove. This kind of structure is reasonably arranged, convenient to set the sliding member on the support body, and the moving stability and smoothness of the sliding member on the slide rail are ensured. The support body is not easy to deviate in the width direction in the installation groove, and the support body is not easy to get stuck during the movement process.

[0015] Further, a front stop and a rear stop are prominently provided on the bottom surface of the installation groove, and the front stop and the rear stop are arranged at intervals along the front-back direction of the vehicle frame; a limiting member extending into the installation groove is provided on the back surface of the support body, and elastic openings facing each other are respectively provided on the front stop and the rear stop, and the elastic openings are used to elastically clamp the limiting member. Through the settings of the front and rear stops and the elastic openings, the moving position of the support body on the base can be limited, and the position stability of the support body on the base is good.

[0016] Furthermore, a clamping block is fixedly connected to the rear end of the support body, and an elastic opening is provided on the rear end of the rear block body, and the elastic opening is used to clamp the clamping block. The support body can be stably held in the mounting groove by the clamping of the clamping block by the elastic opening on the front block body and the clamping of the stopper by the elastic opening on the front block body.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. In this seat cushion device, the position of the rear seat cushion can be changed according to different needs, so that the delivery vehicle can carry tool boxes of different sizes, which is convenient for the daily work needs of the deliveryman.

[0018] 2. By setting the support body, it can adapt to the load of a large-sized tool box and also adapt to the different position changes of the rear seat cushion. By setting the sliding member and the slide rail, the position change of the support body on the base is smooth. Moreover, the support body movably set on the base can also adapt well to the position change of the rear seat cushion, which can effectively expand the use function of the takeaway car.

[0019] 3. By setting the limit rod, limit hole, receiving rod and receiving interface, the rear seat cushion can be freely switched in different position states. The state switching is convenient, the structure is novel and simple, and it can well meet the actual use needs.

[0020] 4. By arranging a slide rail and a slide member between the support body and the base, the support body can move smoothly on the base, and a stable connection between the support body and the base can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a reference diagram of the seat cushion device in use after the base is removed.

[0022] Figure 2 yes Figure 1 Exploded view of the middle part of the structure.

[0023] Figure 3 This is the assembly structure diagram of the recoil frame.

[0024] Figure 4 This is an enlarged structural diagram of the mounting base.

[0025] Figure 5 It is an enlarged structural diagram of the support body assembled in the base mounting groove.

[0026] Figure 6 yes Figure 5 Exploded structure diagram, one of the rails is not exploded, and the other rail is shown exploded.

[0027] Figure 7 It is a reference diagram of the use status of the seat cushion device.

[0028] In the figure, 1, frame; 2, fixing rod; 3, fixing body; 4, supporting plate; 5, supporting body; 51, pulling plate; 52, sliding member; 53, fixing column; 54, clamping block; 55, limiting member; 56, pad; 6, rear seat frame; 61, connecting part; 62, connecting frame; 63, receiving rod; 64, limiting rod; 7, tension spring; 8, mounting seat; 81, supporting rod; 82, limiting hole; 83, receiving interface; 9, fixing seat; 91, fixing plate; 10, base; 101, mounting groove; 11, sliding rail; 111, upper pressing plate; 112, partition column; 113, lower pressing plate; 114, deformation part; 115, base plate; 12, front block body; 13, elastic sheet; 14, rear block body; 15, front frame; 16, rear frame. DETAILED DESCRIPTION

[0029] The front and rear involved in this application are based on the normal position of the takeaway truck. The position close to the front wheels of the takeaway truck is called "front", and the position close to the rear wheels of the takeaway truck is called "rear".

[0030] Combined with the attached drawings, Figure 1 , 2 As shown in Figures 7, the seat cushion device of the takeaway vehicle is arranged on the rear end of the vehicle frame 1 for the driver to sit on and for the toolbox or other items to be loaded. The structure includes a front seat cushion and a rear seat cushion not shown in the figure. A front frame 15 and a rear frame 16 are separately welded and fixed at the middle position of the vehicle frame 1. The front seat cushion is fixedly bridged on the front frame 15 and the rear frame 16. Once the front seat cushion is installed in place, the position will not change easily. Its main function is to provide a seat for the driver; the rear seat cushion is movably arranged on the vehicle frame 1. During use, the rear seat cushion can change its position, so that the rear seat cushion has different usage functions. In order to adapt to the position change of the rear seat cushion, a movable support body 5 is also arranged on the rear end side of the vehicle frame 1. The support body 5 can move forward and backward on the vehicle frame 1, and the takeaway toolbox can be installed and loaded according to the actual usage status and requirements.

[0031] The rear seat cushion and the support body 5 are supported by a base 10, which is a trough-shaped body. Four fixing bodies 3 are welded and fixed on the frame 1. The four fixing bodies 3 are respectively located at the four corners of the base 10. The four corners of the base 10 are welded and fixedly connected to the fixing bodies 3. A fixing rod 2 is welded and fixedly connected to the front end of the base 10. The fixing rod 2 is arranged in the width direction of the frame 1. A fixing seat 9 is welded and fixedly connected to the fixing rod 2. The fixing seat 9 is located in the middle position of the fixing rod 2 in the length direction.

[0032] The rear seat cushion is fixedly connected to the rear seat frame 6, and the rear seat frame 6 is movably connected to the mounting seat 8. The mounting seat 8 is in a plate-like structure and is integrally in a C shape. The mounting seat 8 is buckled on the fixed seat 9, and the mounting seat 8 is fixedly connected to the fixed seat 9 by bolts or welding, and the mounting seat 8 is vertically arranged on the fixed seat 9. A plurality of spaced-apart receiving ports 83 are provided on the rear end side of the mounting seat 8. These receiving ports 83 are arranged in pairs on the mounting seat 8, and adjacent pairs of receiving ports 83 have intervals both in the horizontal direction and in the vertical direction.

[0033] On the mounting seat 8, a strip-shaped limiting hole 82 is provided on the front side of the receiving port 83. The limiting hole 82 is vertically arranged. The limiting hole 82 is a pair, and the limiting hole 82 is generally arranged in the vertical direction. On the front end side of the rear seat frame 6, a limiting rod 64 and a receiving rod 63 are provided in parallel. The receiving rod 63 is located behind the limiting rod 64. The limiting rod 64 is movably inserted into the pair of limiting holes 82, and the receiving rod 63 is used to respectively support in different receiving ports 83 arranged in pairs. When the receiving rod 63 is respectively engaged and matched with different receiving ports 83, the position of the limiting rod 64 in the limiting hole 82 will change, so that the rear seat frame 6 can be switched and arranged in the horizontal direction, the inclined direction and the vertical direction. Furthermore, the rear seat cushion can be used as a seat cushion or as a backrest to support the back of the food delivery vehicle driver.

[0034] Figure 4 As shown, there are three pairs of receiving ports 83 on the mounting seat 8. The lowermost pair of receiving ports 83 is in an L shape, and this receiving port 83 is used to support the receiving rod 63 on the rear seat frame 6 in the horizontal direction. The remaining two pairs of receiving ports 83 are in a C shape or a U shape. The middle pair of receiving ports 83 is used to support the receiving rod 63 on the rear seat frame 6 in an inclined state; the front pair of receiving ports 83 is used to support the receiving rod 63 on the rear seat frame 6 in a vertical state.

[0035] A support rod 81 is bridged on the rear lower side of the receiving port 83 on the mounting seat 8. Both ends of the support rod 81 extend out to the opposite sides of the mounting seat 8, and both ends of the support rod 81 are used to support the rear seat frame 6 in a horizontal state. A support plate 4 is bridged on the base 10. The support plate 4 is strip-shaped. Both the support rod 81 and the support plate 4 are arranged along the width direction of the base 10, and the support plate 4 is used to support and hold the rear seat frame 6 in a horizontal state.

[0036] A tension spring 7 is provided between the front ends of the mounting seat 8 and the rear seat frame 6. The tension spring 7 is used to pull the front end of the rear seat frame 6 downward. There are two tension springs 7. Two fixing plates 91 are horizontally welded and fixed on the fixed seat 9. The upper end of the tension spring 7 is connected to the limiting rod 64, and the lower end of the tension spring 7 is connected to the fixing plate 91.

[0037] The recoil mount 6 is mainly composed of two connected components, including a connecting frame 62 and a connecting part 61 connected together. The connecting part 61 is located on the front side of the connecting frame 62. The connecting frame 62 is of a frame structure, and the connecting part 61 is a plate-shaped groove body. The receiving rod 63 and the limiting rod 64 are both bridged on the connecting part 61.

[0038] The support body 5 can be provided on the base 10 to be pulled back and forth along the front-rear direction of the vehicle frame 1. The support body 5 can be pulled out of the outside of the base 10 or retracted into the base 10. In order to achieve the smooth sliding of the support body 5 on the base 10, a sliding member 52 and a slide rail 11 that are slidably matched with each other are provided between the support body 5 and the base 10. The slide rail 11 is arranged along the front-rear direction of the food delivery vehicle. When it is necessary to fix a large-size toolbox, the support body 5 can be pulled backward on the base 10 so that the support body 5 extends out of the outside of the base 10, and the toolbox can be installed and fixed on the support body 5. After the rear seat cushion is put down, the support body 5 can be pulled backward on the base 10, and the toolbox can be installed and fixed to the support body 5. When the rear seat cushion is in an inclined or vertical state, the support body 5 can be pushed toward the base 10 until the support body 5 can completely coincide with the base 10.

[0039] The base 10 is a plate body, and an installation groove 101 is formed on the base 10. The installation groove 101 is arranged in the front-rear direction of the food delivery vehicle. The cross section of the base 10 is in an inverted "L" shape. The width of the installation groove 101 is relatively wide, and the width of the installation groove 101 is slightly smaller than the width of the rear part of the vehicle frame 1. The installation groove 101 is embedded in the vehicle frame 1. The slide rail 11 is arranged in the installation groove 101, the sliding member 52 is arranged on the support body 5, and the support body 5 is movably installed in the installation groove 101. Moreover, the upper end surface of the support body 5 is basically flush with the upper opening part of the installation groove 101. The bottom area of the installation groove 101 and the lateral area of the support body 5 are not very different, and the support body 5 can basically completely coincide with the installation groove 101.

[0040] Figure 5 、 6 As shown in, the support body 5 itself is also a plate-shaped body. The cross section of the support body 5 is in a "冂" shape, and the support body 5 is buckled in the installation groove 101. The support body 5 can also be of a frame structure. There are multiple sliding members 52, and these sliding members 52 are arranged in two rows. The two rows of sliding members 52 are arranged on the opposite side parts of the support body 5. There are two slide rails 11, and the two slide rails 11 are arranged at the two corner parts of the installation groove 101. Figure 6As shown in the figure, the sliding member 52 is a hollow cylinder, and an outward convex ring is integrally formed at one end of the sliding member 52 facing the support body 5. Two rows of fixing columns 53 are fixedly connected to the side of the support body 5, and one sliding member 52 is sleeved on one fixing column 53 with a gap. A slide groove is formed on the side of the slide rail 11 facing the support body 5, and the sliding member 52 is inserted into the slide groove with a gap. The outer diameter of the outward convex ring is larger than the width of the slide groove, so as to prevent the sliding member 52 from being excessively inserted into the slide groove and affecting the relative position between the support body 5 and the mounting groove 101.

[0041] The slide rail 11 is a split structure, and the slide rail 11 includes an upper pressing plate 111 and a lower pressing plate 113 arranged in parallel. The cross section of the upper pressing plate 111 is L-shaped, and the upper pressing plate 111 is buckled on the lower pressing plate 113. The upper pressing plate 111 and the lower pressing plate 113 are fixed to the base 10 by fixing bolts. A partition column 112 is sleeved on the fixing bolt, and the partition column 112 is located between the upper pressing plate 111 and the lower pressing plate 113, so as to realize the separation setting between the upper pressing plate 111 and the lower pressing plate 113, and the slide groove is formed between the upper pressing plate 111 and the lower pressing plate 113. Two substrates 115 are also arranged on the bottom surface of the installation groove 101 corresponding to the positions of the two slide rails 11. The two slide rails 11 are of equal length, and the corresponding upper pressing plate 111, the lower pressing plate 113 and the substrate 115 are of equal length, and the lower pressing plate 113 is fixed on the substrate 115. A plurality of deformation portions 114 protruding toward each other are formed at corresponding positions of the upper pressing plate 111 and the lower pressing plate 113, and the deformation portions 114 are formed by stamping. The interval between the two corresponding deformation portions 114 on the upper pressing plate 111 and the lower pressing plate 113 arranged together is slightly smaller than the outer diameter of the sliding member 52, and the sliding member 52 can enter between the two corresponding deformation portions 114, and the two deformation portions 114 can realize elastic clamping to stabilize the position of the support body 5 on the base 10.

[0042] A stopper 55 extending downward into the mounting groove 101 is fixedly connected to the back of the support body 5. The stopper 55 is arranged at the middle position in the length direction of the support body 5. The stopper 55 is in a U-shape. A pad 56 is fixedly attached to the bottom surface of the stopper 55 to increase the thickness of the bottom of the stopper 55. A front stopper 12 and a rear stopper 14 are arranged at intervals on the base 10 along the movement direction of the support body 5. The rear stopper 14 is arranged at the rear end of the base 10. The front stopper 12 is arranged at the middle position of the base 10. Both the front stopper 12 and the rear stopper 14 can realize the position limitation of the support body 5 on the base 10 by blocking the stopper 55. The stopper 55 is blocked by the front stopper 12 and the rear stopper 14, so that the support body 5 can be completely retracted into the mounting groove 101, and the support body 5 can only extend outward by half of its length. The front block 12 and the rear block 14 are respectively provided with elastic openings that open toward each other, and the elastic openings are used to elastically clamp the bottom of the limiting member 55 and the backing plate 56 to limit the movement distance of the support body 5 on the base 10 .

[0043] In order to facilitate the movement of the support body 5, a protruding pull plate 51 is provided on the rear end of the support body 5, and the pull plate 51 is tilted downward. A clamping block 54 is provided on the rear end side of the support body 5, and the clamping block 54 is generally fixed to the back of the pull plate 51. The rear block 14 is also provided with an elastic opening opening toward the rear side, which is used to elastically clamp the clamping block 54 and realize the position of the support body 5 in the installation groove 101. Combined with the clamping of the limiter 55 and the pad 56 by the elastic opening on the front block 12, the support body 5 can be stably retracted in the base 10.

[0044] The elastic opening is formed on a bent elastic sheet 13, which is approximately C-shaped as a whole. The elastic sheet 13 is bent and deformed on the inner side of the elastic opening to form a narrowed clamping portion protruding into the elastic opening. The clamping portion is used to elastically clamp the block 54, the bottom of the limit member 55 and the pad 56.

Claims

1. A seat cushion device for a wheeled takeaway vehicle, arranged at the rear end side of a vehicle frame, comprising a front seat cushion and a rear seat cushion arranged in sections, wherein the front seat cushion is fixed to the vehicle frame, and the rear seat cushion is movably arranged on the vehicle frame, characterized in that: Comprising: A base, fixedly connected to the vehicle frame; A mounting seat, fixedly connected to the base. At least three spaced-apart receiving ports are provided on the rear side of the mounting seat. A strip-shaped limiting hole is provided on the front side of the mounting seat corresponding to the receiving ports, and the limiting hole is arranged vertically; A rear seat frame, with the rear seat cushion fixedly connected thereto. A limiting rod and a receiving rod are provided side by side on the front end side of the rear seat frame. The receiving rod is located behind the limiting rod. The limiting rod is movably inserted into the limiting hole, and the receiving rod is used to respectively support in different receiving ports, so that the rear seat cushion can be switched and arranged in the horizontal direction, the inclined direction and the vertical direction; A support body, movably arranged on the base. A sliding member and a slide rail are provided between the base and the support body. The slide rail is arranged along the front-rear direction of the vehicle frame. The support body moves outward from the base or moves inward toward the base by the movement of the sliding member on the slide rail.

2. The seat cushion device of the wheeled takeaway vehicle according to claim 1, characterized in that: The lowermost receiving port is L-shaped, and this receiving port is used to support the receiving rod on the rear seat frame in the horizontal direction.

3. The seat cushion device of the wheeled takeaway vehicle according to claim 1, characterized in that: A tension spring is provided between the front end of the mounting seat and the rear seat frame, and the tension spring is used to pull the front end of the rear seat frame downward.

4. The seat cushion device of the wheeled takeaway vehicle according to claim 3, characterized in that: The mounting seat is in a C shape, and the receiving ports are arranged in pairs on the mounting seat. A fixed seat is fixedly connected to the base. One end of the tension spring is connected to the fixed seat, and the other end is connected to the limiting rod.

5. The seat cushion device of the wheeled takeaway vehicle according to claim 4, characterized in that: A fixed rod is fixedly connected to the front end of the base. A support plate is provided at the middle position of the base. Both the fixed rod and the support plate are arranged along the width direction of the vehicle frame. The fixed seat is fixedly connected to the fixed rod, and the support plate is used to support the rear seat frame in the horizontal direction.

6. The seat cushion device of the wheeled takeaway vehicle according to any one of claims 1 to 5, characterized in that: An installation groove is provided on the base, and the installation groove is arranged along the front-rear direction of the vehicle frame. The support body is installed in the installation groove.

7. The seat cushion device of the wheeled takeaway vehicle according to claim 6, characterized in that: The slide rail includes a strip-shaped upper pressing piece and a lower pressing piece. The cross section of the upper pressing piece is L-shaped, and the upper pressing piece is buckled on the lower pressing piece. A chute is formed between the upper pressing piece and the lower pressing piece, and the sliding member is inserted into the chute with a gap.

8. The seat cushion device of the wheeled takeaway vehicle according to claim 7, characterized in that: The support body is plate-shaped, and the cross section of the support body is in a U shape. A row of fixing columns extending outward from the support body are respectively fixedly connected to both side portions of the support body. The sliding member is a hollow cylinder, and one fixing column is sleeved with a sliding member with a gap; An outward protruding ring is integrally formed at one end of the sliding member facing the support body, and the outer diameter of the outward protruding ring is larger than the width of the chute.

9. The seat cushion device for a wheeled takeaway vehicle according to claim 6, characterized in that: A front stop and a rear stop protrude from the bottom surface of the installation groove, and the front stop and the rear stop are spaced apart along the front-rear direction of the vehicle frame; A limiting member extending into the installation groove is provided on the back surface of the support body. Oppositely opening elastic openings are respectively provided on the front stop and the rear stop, and the elastic openings are used to elastically clamp the limiting member.

10. The seat cushion device of the wheeled takeaway vehicle according to claim 9, characterized in that: A clamping block is fixedly connected to the rear end of the support body, and an elastic opening is provided at the rear end of the rear stop, and this elastic opening is used to clamp the clamping block.

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