A vehicle

Abstract

The utility model discloses a carrier, including two uprights, be connected with the upper sliding block and lower sliding block on every upright, and the front frame includes two left and right interval arrangement's front vertical pole, is equipped with the front lower link between every front vertical pole lower extreme and the lower sliding block of same side, is equipped with the front upper link between every front vertical pole upper extreme and the upper sliding block of same side, is equipped with the front connecting rod between the front upper link middle part and the upright upper extreme of same side, and is equipped with the front connecting rod between two front vertical poles, and the rear frame includes two left and right interval arrangement's rear vertical pole, is equipped with the rear lower link between every rear vertical pole lower extreme and the lower sliding block of same side, is equipped with the rear upper link between every rear vertical pole upper extreme and the upper sliding block of same side, is equipped with the rear connecting rod between the rear upper link middle part and the upright upper extreme of same side, and is equipped with the rear connecting rod between two rear vertical poles and extends, when the upper sliding block slides down and the lower sliding block slides up, the upper sliding block and lower sliding block draw the front frame and rear frame and fold to each other. The utility model discloses folding volume is small.

Description

Technical Field

[0001] This utility model relates to a vehicle. Background Technology

[0002] Camping vehicles and strollers are common vehicles in people's daily lives. For example, Chinese Patent Publication No. (CN209176768U) discloses a foldable stroller. Although the stroller can be folded, its height dimension is still relatively large after folding, and it still occupies a lot of space.

[0003] Therefore, this utility model was created based on the above-mentioned shortcomings. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a vehicle with a simple structure and small size after folding.

[0005] This utility model is achieved through the following technical solution:

[0006] A vehicle, capable of transitioning from an unfolded state to a folded state after a locking device is unlocked, includes two horizontally spaced uprights. Each upright is connected to an upper slider and a lower slider that can slide vertically relative to it. A front frame is movably connected to the front of the upper and lower sliders, and a rear frame is movably connected to the rear of the upper and lower sliders. Wheels are mounted on both the front and rear frames. The rear frame, front frame, and uprights enclose a vehicle space. The front frame includes two horizontally spaced front vertical rods. A lower front rod, rotatably connected to a lower slider on the same side, is located between the lower end of each front vertical rod and the lower slider on the same side. An upper front rod, rotatably connected to an upper slider on the same side, is located between the upper end of each front vertical rod and the upper slider on the same side. The front upper rod is connected to the upper end of the same side column by a front connecting rod that is rotatably connected to both of them. A front connecting rod extending to the left and right is provided between the two front vertical rods. The rear frame includes two rear vertical rods that are spaced apart to the left and right. A rear lower rod is connected to the lower slider on the same side by a rear lower rod at the lower end of each rear vertical rod. A rear upper rod is connected to the upper slider on the same side by a rear upper rod at the upper end of each rear vertical rod. A rear connecting rod is connected to the upper end of the same side column by a rear connecting rod at the middle of the rear upper rod. A rear connecting rod extending forward and backward is provided between the two rear vertical rods. When the upper slider slides downward and the lower slider slides upward, the upper slider and the lower slider pull the front frame and the rear frame together and fold.

[0007] The front upper rod includes a front straight section and a front bent section integrally formed with the front straight section and bent downward relative to the front straight section. The front straight section is rotatably connected to the upper end of the front vertical rod, and the front bent section is rotatably connected to the upper slider. The rear upper rod includes a rear straight section and a rear bent section integrally formed with the rear straight section and bent downward relative to the rear straight section. The rear straight section is rotatably connected to the upper end of the rear vertical rod, and the rear bent section is rotatably connected to the upper slider.

[0008] When the vehicle is in the unfolded state, the front straight section is parallel to the front lower rod and the rear straight section is parallel to the rear lower rod. When the vehicle is in the folded state, both the front bent section and the rear bent section are close to the column and parallel to the column.

[0009] A traction component is provided between the upper slider and the lower slider, which can pull the lower slider to slide upward when the upper slider slides downward.

[0010] The column is provided with rotating parts at its upper and lower ends, and the traction part includes a ring-shaped pull rope. The pull rope is sleeved on the two rotating parts and forms a front longitudinal section and a rear longitudinal section with a front-to-back gap inside the column. The lower slider is fixed on the front longitudinal section and the upper slider is fixed on the rear longitudinal section.

[0011] The upper slider includes an upper sleeve seat fitted on the outside of the column. The upper sleeve seat has a protruding first guide block and a second guide block. The column has a first guide groove that slides with the first guide block and a second guide groove that slides with the second guide block. The upper sleeve seat also has upper protrusions that protrude to both sides. The front upper rod and the rear upper rod are rotatably connected to the corresponding upper protrusions. The lower slider includes a lower sleeve seat fitted on the inside of the column. The lower sleeve seat has a protruding third guide block and a fourth guide block. The column has a third guide groove that slides with the third guide block and a fourth guide groove that slides with the fourth guide block. The lower sleeve seat also has lower protrusions that protrude to both sides. The front lower rod and the rear lower rod are rotatably connected to the corresponding lower protrusions.

[0012] Each of the aforementioned upper protrusions is provided with an upward-facing upper connecting groove, and the front upper rod and the rear upper rod are inserted into the corresponding upper connecting groove and rotatably connected to the upper protrusion; each of the aforementioned lower protrusions is provided with a downward-facing lower connecting groove, and the front lower rod and the rear lower rod are inserted into the corresponding lower connecting groove and rotatably connected to the lower protrusion; and, when the vehicle is in the deployed state, the front lower rod and the rear lower rod abut against the top wall of the corresponding lower connecting groove.

[0013] The locking device includes an upper locking hole on the upper slider and a lower locking hole on the lower slider. The column has a movable rod that can swing relative to it. The lower end of the movable rod has a lower locking block that can pass through the side wall of the column and engage or disengage with the lower locking hole. The upper end of the movable rod has an upper locking block that can pass through the side wall of the column and engage or disengage with the upper locking hole. The upper slider also has an unlocking button that can push the upper locking block out of the upper locking hole. A return spring is provided between the upper locking block or the movable rod and the column that can push the upper locking block back to its original position. When the unlocking button is pressed and the upper locking block disengages from the upper locking hole, the movable rod swings and causes the lower locking block to disengage from the lower locking hole.

[0014] The movable rod is connected to a movable block that can move inside the column. One side of the movable block abuts against the inner wall of the column, and a positioning post is slidably provided inside the other side. An elastic element is provided between the positioning post and the movable block. The column is provided with a positioning hole that can engage with the positioning post. There is a gap between the movable block and the positioning post, so that the movable rod and the movable block can swing together inside the column.

[0015] A vehicle, capable of being converted from an unfolded state to a folded state after a locking device is unlocked, includes two horizontally spaced uprights. Each upright is connected to an upper slider and a lower slider that can slide vertically relative to it. A front frame is movably connected to the front side of the upper and lower sliders, and a rear frame is movably connected to the rear side of the upper and lower sliders. Both the front and rear frames are equipped with wheels. The rear frame, front frame, and uprights form a vehicle space for a child to ride in. The front frame includes two horizontally spaced front vertical bars. Each front vertical bar has a front lower bar rotatably connected to the lower slider on the same side at its lower end. A front upper rod is provided between the upper end and the upper slider on the same side, and a front connecting rod extending left and right is provided between the two front vertical rods or between the two front lower rods; the rear frame includes two rear vertical rods spaced left and right, a rear lower rod is provided between the lower end of each rear vertical rod and the lower slider on the same side, and a rear upper rod is provided between the upper end of each rear vertical rod and the upper slider on the same side, and a rear connecting rod extending front and back is provided between the two rear vertical rods or between the two rear lower rods. When the upper slider slides down and the lower slider slides up, the upper slider and the lower slider pull the front frame and the rear frame together and fold.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. When the vehicle of this utility model is folded, the upper slider slides downward along the column, pulling the front upper rod to rotate relative to the front vertical rod and the rear upper rod to rotate relative to the rear vertical rod. The upper slider also rotates relative to the front and rear upper rods. During this process, the lower slider slides upward along the column, pulling the front lower rod to rotate relative to the front vertical rod and the rear lower rod to rotate relative to the rear vertical rod. The lower slider also rotates relative to the front and rear lower rods. As the upper and lower sliders pull the front upper rod, rear upper rod, front lower rod, and rear lower rod to move, the front and rear vertical rods move closer to the column in the front-rear direction of the vehicle. At this time, the front upper rod, front lower rod, rear upper rod, and rear lower rod also move closer to the column, thereby realizing the folding of the front and rear frames. After the entire vehicle is folded, the dimension in the height direction does not increase, making the folded vehicle small in size, occupying little space, and easy to carry or store.

[0018] 2. The present invention provides a front connecting rod that is rotatably connected to the upper part of the front upper rod and the upper part of the column on the same side, and a rear connecting rod that is rotatably connected to the upper part of the rear upper rod and the upper part of the column on the same side. When the vehicle is unfolded, the upper part of the column presents two triangular support structures, which makes the vehicle have sufficient stability in the unfolded state and the structure more robust. When the vehicle is folded, the upper slider slides down and pulls the front and rear upper rods to rotate. During this process, the front upper rod drives the front connecting rod to rotate relative to the column, and the rear upper rod drives the rear connecting rod to rotate relative to the column. This causes the front and rear connecting rods to move closer to the column, ensuring that the vehicle occupies little space after folding.

[0019] 3. The column of this utility model is equipped with rotating parts at both the upper and lower ends. A ring-shaped pull rope is fitted onto each rotating part. The pull rope has a front longitudinal section and a rear longitudinal section spaced apart within the column. The lower slider is fixed to the front longitudinal section, while the upper slider is fixed to the rear longitudinal section. Therefore, when the upper slider slides downwards, it pulls the rear longitudinal section of the pull rope downwards, causing the front longitudinal section of the pull rope to move upwards. This, in turn, causes the lower slider to move upwards, thus enabling the movement of the upper slider to drive the movement of the lower slider, making the folding operation of the vehicle more convenient and faster. Attached Figure Description

[0020] Figure 1 This is a perspective view of Embodiment 1 of this utility model;

[0021] Figure 2 This is a side view of the unfolded state of Embodiment 1 of this utility model;

[0022] Figure 3 This is a side view of Embodiment 1 of this utility model during the folding process;

[0023] Figure 4 This is a side view of the folded state of Embodiment 1 of this utility model;

[0024] Figure 5 This is a cross-sectional view of a component of Embodiment 1 of this utility model;

[0025] Figure 6 This is a perspective view of the column of this utility model;

[0026] Figure 7 This is a partial sectional view of the present invention;

[0027] Figure 8 yes Figure 7 Enlarged view of point A in the middle;

[0028] Figure 9 yes Figure 7 Enlarged view at point B;

[0029] Figure 10 yes Figure 7 A magnified view at point C;

[0030] Figure 11 This is an exploded view of the components of Embodiment 1 of this utility model;

[0031] Figure 12 This is a perspective view of Embodiment 2 of this utility model;

[0032] Figure 13 This is a side view of the folding process in Embodiment 2 of this utility model. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings:

[0034] Example 1:

[0035] like Figures 1 to 4As shown, a vehicle can be converted from an unfolded state to a folded state after the locking device is unlocked. Its structure mainly includes two columns 1 spaced apart horizontally. Each column 1 is connected to an upper slider 21 and a lower slider 22 that can slide vertically relative to it. A front frame 3 is movably connected to the front side of the upper slider 21 and the lower slider 22, and a rear frame 4 is movably connected to the rear side. Both the front frame 3 and the rear frame 4 are equipped with wheels 5. The rear frame 4, the front frame 3, and the columns 1 together form a vehicle space 100, which can be used to carry children or transport items such as food needed for camping. The front frame 3 includes two front vertical bars 31 spaced apart horizontally. A front lower bar 32 is provided between the lower end of each front vertical bar 31 and the lower slider 22 on the same side, and both ends of the front lower bar 32 are rotatably connected to the front vertical bar 31 and the lower slider 22. A front upper bar 33 is provided between the upper end of each front vertical bar 31 and the upper slider 21 on the same side, and both ends of the front upper bar 33 are rotatably connected to the front vertical bar and the upper slider 21. A front connecting rod 34 is provided between the middle of the front upper rod 33 and the upper end of the column 1 on the same side. The two ends of the front connecting rod 34 are rotatably connected to the middle of the front upper rod 33 and the upper end of the column 1. A front connecting rod 35 extending left and right is provided between the two front vertical rods 31. The rear frame 4 includes two rear vertical rods 41 spaced left and right. A rear lower rod 42 is provided between the lower end of each rear vertical rod 41 and the lower slider 22 on the same side. The two ends of the rear lower rod 42 are rotatably connected to the rear vertical rod 41 and the lower slider 22. A rear upper rod 43 is provided between the upper end of each rear vertical rod 41 and the upper slider 21 on the same side. The two ends of the rear upper rod 43 are rotatably connected to the rear vertical rod 41 and the upper slider 21. A rear connecting rod 44 is provided between the middle of the rear upper rod 43 and the upper end of the column 1 on the same side. The two ends of the rear connecting rod 44 are rotatably connected to the middle of the rear upper rod 43 and the upper end of the column 1. A rear connecting rod 45 extending front and back is provided between the two rear vertical rods 41. When the upper slider 21 slides downward and the lower slider 22 slides upward, the upper slider 21 and the lower slider 22 will pull the front frame 3 and the rear frame 4 together, thereby achieving the folding of the vehicle. Specifically, after the locking device is unlocked, the upper slider 21 is operated to slide downward along the column 1. The upper slider 21 pulls the front upper rod 33 to rotate relative to the front vertical rod 31 and pulls the rear upper rod 43 to rotate relative to the rear vertical rod 41. The upper slider 21 also rotates relative to the front upper rod 33 and the rear upper rod 43. During this process, the lower slider 22 slides upward along the column 1. The lower slider 22 pulls the front lower rod 32 to rotate relative to the front vertical rod 31 and pulls the rear lower rod 42 to rotate relative to the rear vertical rod 41. The lower slider 22 also rotates relative to the front upper rod 33 and the rear upper rod 43. The front lower rod 32 and the rear lower rod 42 rotate relative to each other. As the upper slider 21 and the lower slider 22 pull the front upper rod 33, the rear upper rod 443, the front lower rod 32 and the rear lower rod 42 to move, the front vertical rod 31 and the rear vertical rod 41 move closer to the column 1 in the front-rear direction of the vehicle. At this time, the front upper rod 33, the front lower rod 32, the rear upper rod 43 and the rear lower rod 42 also move closer to the column 1, thereby realizing the folding of the front frame 3 and the rear frame 4. The entire vehicle is small in size and occupies little space after folding, making it easy to carry or store.In particular, since a front connecting rod 34 is provided between the middle of the front upper rod 33 and the upper end of the same side column 1, and a rear connecting rod 44 is provided between the middle of the rear upper rod 43 and the upper end of the same side column 1, when the vehicle is in the unfolded state, the upper end of the column 1 presents two triangular support structures, which makes the vehicle have sufficient stability in the unfolded state and the structure is more stable and reliable. When the vehicle is folded, the upper slider 21 slides down and pulls the front upper rod 33 and the rear upper rod 43 to rotate. During this process, the front upper rod 33 drives the front connecting rod 34 to rotate relative to the column 1, and the rear upper rod 43 drives the rear connecting rod 44 to rotate relative to the column 1. This allows the front connecting rod 34 and the rear connecting rod 44 to also move closer to the column 1, which also ensures that the vehicle occupies little space after folding. The locking device of the vehicle can adopt a conventional locking joint structure, such as locking joints between the front vertical bar 31 and the front upper bar 33, and between the rear vertical bar 41 and the rear upper bar 43. After the locking joints are unlocked, the vehicle can be folded. This embodiment uses a locking device with a different specific structure, which will be described in detail later.

[0036] like Figures 1 to 4 As shown, the front upper rod 33 includes a front straight section 331 and a front bent section 332 integrally formed with the front straight section 331 and bent downwards relative to it. The front straight section 331 is rotatably connected to the upper end of the front vertical rod 31, and the front bent section 332 is rotatably connected to the upper slider 21. The rear upper rod 43 includes a rear straight section 431 and a rear bent section 432 integrally formed with the rear straight section 431 and bent downwards relative to it. The rear straight section 431 is rotatably connected to the upper end of the rear vertical rod 41, and the rear bent section 432 is rotatably connected to the upper slider 21. When the vehicle is in the unfolded state, the front straight section 331 is parallel to the front lower rod 32, and the rear straight section 431 is parallel to the rear lower rod 42. When the vehicle is in the folded state, both the front bent section 332 and the rear bent section 432 are close to the column 1 and parallel to the column 1. This structural design makes the vehicle compact and flexible in the unfolded state, and also ensures a small size in the folded state.

[0037] like Figure 7 and Figure 11As shown, a traction member 6 is provided between the upper slider 21 and the lower slider 22. When the upper slider 21 slides downward, the traction member 6 can pull the lower slider 22 upward, thus making the folding operation of the vehicle simple and quick, requiring only the operation of sliding the upper slider 21. The upper and lower ends of the column 1 are respectively provided with rotating members 15 that can rotate relative to them. In this embodiment, the rotating member 15 is a rotatable bearing. The traction member 6 includes a ring-shaped pull rope 61, which is sleeved on the two rotating members 15 and forms a front longitudinal section 611 and a rear longitudinal section 612 with a front-to-back gap inside the column 1. The lower slider 22 is fixed on the front longitudinal section 611, and the upper slider 21 is fixed on the rear longitudinal section 612. When the upper slider 212 slides downward, the upper slider 1 pulls the rear longitudinal section 612 of the pull rope 61 downward, and the front longitudinal section 611 of the pull rope 61 moves upward. The front longitudinal section 611 then drives the lower slider 22 upward, thus realizing that the movement of the upper slider 21 drives the movement of the lower slider 22, making the folding operation of the vehicle more convenient and faster. In order to prevent the pull rope 61 from detaching from the circumferential surface of the rotating part 15 when it moves, a stop block 16 is provided on both sides of the bearing at the upper end of the column 1, and a limiting groove 17 is formed between the two stop blocks 16. The pull rope 61 is located in the limiting groove 17.

[0038] like Figure 5 and Figure 6 As shown, the upper slider 21 includes an upper sleeve seat 213 sleeved on the outside of the column 1. The upper sleeve seat 213 is provided with a protruding first guide block 211 and a second guide block 212. The column 1 is provided with a first guide groove 11 that slides with the first guide block 211 and a second guide groove 12 that slides with the second guide block 212. The lower slider 22 includes a lower sleeve seat 221 sleeved on the inside of the column 1. The lower sleeve seat 221 is provided with a protruding third guide block 223 and a fourth guide block 224. The column 1 is provided with a third guide groove 13 that slides with the third guide block 223 and a fourth guide groove 14 that slides with the fourth guide block 224, thereby ensuring smooth sliding of the upper slider 21 and the lower slider 22. The upper socket 213 is also provided with an upper protrusion 214 protruding to both sides, and the front upper rod 33 and the rear upper rod 43 are rotatably connected to the corresponding upper protrusion 214. The lower socket 221 is also provided with a lower protrusion 222 protruding to both sides, and the front lower rod 32 and the rear lower rod 42 are rotatably connected to the corresponding lower protrusion 222.

[0039] like Figure 1 , Figure 2 and Figure 5As shown, each upper protrusion 214 is provided with an upward-facing upper connecting groove 215. The front upper rod 33 and the rear upper rod 43 are inserted into the corresponding upper connecting groove 215 and rotatably connected to the upper protrusion 214. Each lower protrusion 222 is provided with a downward-facing lower connecting groove 225. The front lower rod 32 and the rear lower rod 42 are inserted into the corresponding lower connecting groove 225 and rotatably connected to the lower protrusion 222. Furthermore, when the vehicle is in the deployed state, the front lower rod 32 and the rear lower rod 42 abut against the top wall of the corresponding lower connecting groove 225 to provide stable support.

[0040] like Figures 7 to 11 As shown, the locking device includes an upper locking hole 71 on the upper slider 21 and a lower locking hole 72 on the lower slider 22. The column 1 is provided with a movable rod 73 that can swing relative to it. The lower end of the movable rod 73 is provided with a lower locking block 74 that can pass through the side wall of the column 1 and engage or disengage from the lower locking hole 72. The upper end of the movable rod 73 is provided with an upper locking block 75 that can pass through the side wall of the column 1 and engage or disengage from the upper locking hole 71. The upper slider 21 is also provided with an unlocking button 76 that can push the upper locking block 75 out of the upper locking hole 71. A return spring 77 that can push the upper locking block 75 back to its original position is provided between the upper locking block 75 or the movable rod 73 and the column 1. When the unlocking button 76 is pressed and the upper locking block 75 disengages from the upper locking hole 71, the movable rod 73 swings and causes the lower locking block 74 to disengage from the lower locking hole 72, thereby unlocking the locking device. In this embodiment, the vehicle is easy to unlock. Simply press button 76 to unlock both the upper slider 21 and the lower slider 22. The unlocking operation is convenient. When the vehicle is deployed, both the lower slider 22 and the upper slider 21 are locked on the column 1, so that the upper and lower positions of the vehicle are locked, ensuring that the deployed state of the vehicle is stable and reliable.

[0041] like Figure 9 and Figure 11As shown, the movable rod 73 is connected to a movable block 78 that can move inside the column 1. One side of the movable block 78 abuts against the inner wall of the column 1, and the other side is slidably provided with a positioning post 79. An elastic element 70 is provided between the positioning post 79 and the movable block 78. The column 1 is provided with a positioning hole 101 that can engage with the positioning post 79. There is a gap between the movable block 78 and the positioning post 79, so that the movable rod 73 and the movable block 78 can swing together inside the column 1. This design allows the movable rod 73 to form a swing fulcrum within the column 1 while preserving the integrity of the column 1 as much as possible. During assembly, the positioning post 79 compresses the elastic element 70 and is installed inside the column 1 together with the movable block 78. When the positioning post 79 is aligned with the positioning hole 101, the elastic element 70 pushes the positioning post 79 to engage with the positioning hole 101. At this time, the movable block 78 is positioned, and the swing rod 73 has a swing fulcrum within the column 1, allowing the movable rod 73 to swing when the button 76 is pressed, thereby disengaging the lower locking block 74 from the lower locking hole 72. Because the upper slider 21 and the lower slider 22 are located on the left and right sides of the column 1, the column 1 is made thinner in the left-right direction for the sake of a compact structure. As shown in the figure, if holes are drilled along the front-back direction on the column 1 to hinge with the movable rod 73 to achieve the swing of the movable rod 73, the strength of the column 1 will be greatly reduced. However, by setting the aforementioned movable block 78 and other structures inside the column 1, the defect of reduced strength of the column 1 can be avoided.

[0042] like Figure 1 As shown, a push rod 8 is rotatably connected to the rear frame 4 for easy pushing.

[0043] When the vehicle is folded, the push rod 8 can be folded and brought close to the rear vertical rod 41. In addition, in order for the vehicle to have sufficient load-bearing strength, multiple left and right extending front connecting rods 35 are provided between the two front lower rods 32, and multiple left and right extending rear connecting rods 45 are also provided between the two rear lower rods 42.

[0044] Example 2:

[0045] like Figure 12 and Figure 13As shown, a vehicle that can be converted from an unfolded state to a folded state after the locking device is unlocked includes two columns 1 spaced apart from each other. Each column 1 is connected to an upper slider 21 and a lower slider 22 that can slide up and down relative to it. A front frame 3 is movably connected to the front side of the upper slider 21 and the lower slider 22, and a rear frame 4 is movably connected to the rear side of the upper slider 21 and the lower slider 22. Both the front frame 3 and the rear frame 4 are equipped with wheels 5. The rear frame 4, the front frame 3, and the columns 1 form a vehicle space 100 for children to ride in. The front frame 3 includes two front vertical bars 31 spaced apart from each other. The lower end of each front vertical bar 31 is connected to the lower slider 22 on the same side, and a front lower bar 32 is rotatably connected to both of them. The upper end of each front vertical bar 31 is connected to the lower slider 22 on the same side. A front upper rod 33 is provided between the upper sliders 21 on the side and rotatably connected to them. A front connecting rod 35 extending to the left and right is provided between the two front vertical rods 31 or between the two front lower rods 32. The rear frame 4 includes two rear vertical rods 41 arranged at intervals on the left and right. A rear lower rod 42 is provided between the lower end of each rear vertical rod 41 and the lower slider 22 on the same side and rotatably connected to them. A rear upper rod 43 is provided between the upper end of each rear vertical rod 41 and the upper slider 21 on the same side and rotatably connected to them. A rear connecting rod 45 extending forward and backward is provided between the two rear vertical rods 41 or between the two rear lower rods 42. When the upper slider 21 slides downward and the lower slider 22 slides upward, the upper slider 21 and the lower slider 22 pull the front frame 3 and the rear frame 4 together and fold. The difference between this embodiment 2 and embodiment 1 is that the front link 34 and the rear link 44 are omitted in this embodiment 1. When the upper slider 21 and the lower slider 22 slide towards each other, the front upper rod 33, the front lower rod 32, the rear upper rod 43 and the rear lower rod 42 are pulled to make the front frame 3 and the rear frame 4 close together and fold, ensuring that the vehicle is small in size after folding, making it convenient to carry or store.

[0046] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. A vehicle that can be converted from an unfolded state to a folded state after the locking device is unlocked, characterized in that: The vehicle includes two columns (1) spaced apart on the left and right. Each column (1) is connected to an upper slider (21) and a lower slider (22) that can slide up and down relative to it. The front side of the upper slider (21) and the lower slider (22) is movably connected to a front frame (3). The rear side of the upper slider (21) and the lower slider (22) is movably connected to a rear frame (4). Both the front frame (3) and the rear frame (4) are equipped with wheels (5). The rear frame (4), the front frame (3), and the columns (1) form a vehicle space (100). The front frame (3) includes two front vertical rods (31) spaced apart on the left and right. The lower end of each front vertical rod (31) is connected to the lower slider (22) on the same side and is rotatably connected to both. The upper end of each front vertical rod (31) is connected to the upper slider (21) on the same side and is rotatably connected to both. The middle part of the front upper rod (33) is connected to the upper slider (21) on the same side and is rotatably connected to both. The upper ends of the columns (1) are provided with a front connecting rod (34) that is rotatably connected to both of them, and the two front vertical rods (31) are provided with a front connecting rod (35) that extends left and right between them; the rear frame (4) includes two rear vertical rods (41) that are spaced left and right, and the lower end of each rear vertical rod (41) is provided with a rear lower rod (42) that is rotatably connected to the lower slider (22) on the same side, and the upper end of each rear vertical rod (41) is provided with a rear upper rod (43) that is rotatably connected to the upper slider (21) on the same side, and the middle part of the rear upper rod (43) is provided with a rear connecting rod (44) that is rotatably connected to the upper end of the column (1) on the same side, and the two rear vertical rods (41) are provided with a rear connecting rod (45) that extends forward and backward. When the upper slider (21) slides downward and the lower slider (22) slides upward, the upper slider (21) and the lower slider (22) pull the front frame (3) and the rear frame (4) together and fold.

2. The vehicle according to claim 1, characterized in that: The front upper rod (33) includes a front straight section (331) and a front bent section (332) integrally formed with the front straight section (331) and bent downward relative to the front straight section (331). The front straight section (331) is rotatably connected to the upper end of the front vertical rod (31), and the front bent section (332) is rotatably connected to the upper slider (21). The rear upper rod (43) includes a rear straight section (431) and a rear bent section (432) integrally formed with the rear straight section (431) and bent downward relative to the rear straight section (431). The rear straight section (431) is rotatably connected to the upper end of the rear vertical rod (41), and the rear bent section (432) is rotatably connected to the upper slider (21).

3. The vehicle according to claim 2, characterized in that: When the vehicle is in the unfolded state, the front straight section (331) is parallel to the front lower rod (32) and the rear straight section (431) is parallel to the rear lower rod (42). When the vehicle is in the folded state, the front bent section (332) and the rear bent section (432) are both close to the column (1) and parallel to the column (1).

4. The vehicle according to claim 1, 2, or 3, characterized in that: A traction member (6) is provided between the upper slider (21) and the lower slider (22) so that when the upper slider (21) slides downward, it can pull the lower slider (22) to slide upward.

5. The vehicle according to claim 4, characterized in that: The column (1) is provided with rotating parts (15) at its upper and lower ends respectively. The traction part (6) includes a ring-shaped pull rope (61). The pull rope (61) is sleeved on the two rotating parts (15) and forms a front longitudinal section (611) and a rear longitudinal section (612) with a front-to-back gap in the column (1). The lower slider (22) is fixed on the front longitudinal section (611) and the upper slider (21) is fixed on the rear longitudinal section (612).

6. The vehicle according to claim 1, 2, or 3, characterized in that: The upper sliding block (21) includes an upper sleeve seat (213) sleeved on the outside of the column (1). The upper sleeve seat (213) is provided with a protruding first guide block (211) and a second guide block (212). The column (1) is provided with a first guide groove (11) that slides with the first guide block (211) and a second guide groove (12) that slides with the second guide block (212). The upper sleeve seat (213) is also provided with an upper protrusion (214) that protrudes to both sides. The front upper rod (33) and the rear upper rod (43) are rotatably connected to the corresponding upper protrusion (214). The lower slider (22) includes a lower sleeve seat (221) sleeved inside the column (1). The lower sleeve seat (221) is provided with a protruding third guide block (223) and a fourth guide block (224). The column (1) is provided with a third guide groove (13) that slides with the third guide block (223) and a fourth guide groove (14) that slides with the fourth guide block (224). The lower sleeve seat (221) is also provided with a lower protrusion (222) that protrudes to both sides. The front lower rod (32) and the rear lower rod (42) are rotatably connected to the corresponding lower protrusion (222).

7. The vehicle according to claim 6, characterized in that: Each of the aforementioned upper protrusions (214) is provided with an upper connecting groove (215) with the opening facing upward. The front upper rod (33) and the rear upper rod (43) are inserted into the corresponding upper connecting groove (215) and are rotatably connected to the upper protrusion (214). Each of the aforementioned lower protrusions (222) is provided with a lower connecting groove (225) with the opening facing downward. The front lower rod (32) and the rear lower rod (42) are inserted into the corresponding lower connecting groove (225) and are rotatably connected to the lower protrusion (222). Furthermore, when the vehicle is in the unfolded state, the front lower rod (32) and the rear lower rod (42) abut against the top wall of the corresponding lower connecting groove (225).

8. The vehicle according to claim 1, characterized in that: The locking device includes an upper locking hole (71) on the upper slider (21) and a lower locking hole (72) on the lower slider (22). The column (1) is provided with a movable rod (73) that can swing relative to it. The lower end of the movable rod (73) is provided with a lower locking block (74) that can pass through the side wall of the column (1) and engage or disengage from the lower locking hole (72). The upper end of the movable rod (73) is provided with an upper locking block that can pass through the side wall of the column (1) and engage or disengage from the upper locking hole (71). The upper slider (21) of the block (75) is also provided with an unlocking button (76) that can push the upper block (75) out of the upper locking hole (71). The upper block (75) or the movable rod (73) is provided with a reset spring (77) that can push the upper block (75) to reset between the column (1). When the unlocking button (76) is pressed and the upper block (75) is disengaged from the upper locking hole (71), the movable rod (73) swings and the lower block (74) is disengaged from the lower locking hole (72).

9. The vehicle according to claim 8, characterized in that: The movable rod (73) is connected to a movable block (78) that can move inside the column (1) in the middle. One side of the movable block (78) abuts against the inner wall of the column (1), and the other side is provided with a positioning post (79) that slides inside. An elastic element (70) is provided between the positioning post (79) and the movable block (78). The column (1) is provided with a positioning hole (101) that can engage with the positioning post (79). There is a gap between the movable block (78) and the positioning post (79) so that the movable rod (73) and the movable block (78) can swing together inside the column (1).

10. A vehicle that can be converted from an unfolded state to a folded state after the locking device is unlocked, characterized in that: The vehicle includes two columns (1) spaced apart on the left and right. Each column (1) is connected to an upper slider (21) and a lower slider (22) that can slide up and down relative to it. The front side of the upper slider (21) and the lower slider (22) is movably connected to a front frame (3), and the rear side of the upper slider (21) and the lower slider (22) is movably connected to a rear frame (4). Both the front frame (3) and the rear frame (4) are equipped with wheels (5). The rear frame (4), the front frame (3), and the columns (1) form a vehicle space (100) for children to ride in. The front frame (3) includes two front vertical rods (31) spaced apart on the left and right. The lower end of each front vertical rod (31) is connected to the lower slider (22) on the same side with a front lower rod (32) that is rotatably connected to both. The upper end of each front vertical rod (31) is connected to the upper slider (21) on the same side with a front lower rod (32). The front upper rod (33) is rotatably connected to both of them. A front connecting rod (35) extending to the left and right is provided between the two front vertical rods (31) or between the two front lower rods (32). The rear frame (4) includes two rear vertical rods (41) spaced apart to the left and right. A rear lower rod (42) rotatably connected to the lower slider (22) on the same side is provided between the lower end of each rear vertical rod (41). A rear upper rod (43) rotatably connected to the upper slider (21) on the same side is provided between the upper end of each rear vertical rod (41) and the upper slider (21) on the same side. A rear connecting rod (45) extending forward and backward is provided between the two rear vertical rods (41) or between the two rear lower rods (42). When the upper slider (21) slides downward and the lower slider (22) slides upward, the upper slider (21) and the lower slider (22) pull the front frame (3) and the rear frame (4) together and fold.

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