Volume-variable folding cart
By designing a folding cart with variable volume, using independent folding bins and connecting components, the existing folding cart has been solved, and the problem of low utilization and inconvenient use of the existing folding cart is achieved, achieving more efficient space utilization and convenient use experience.
Patent Information
- Application Number
- CN202421067321.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The existing folding carts have low space utilization when transporting fewer items, and are inconvenient to use in crowded places, which affects others.
A folding cart with variable volume is designed. By setting up independent foldable bins and connecting components, the folding bins are allowed to fold, fold or unfold in the front and rear directions, and the storage cavity volume is adjusted using the telescopic rod and flip bucket structure to improve space utilization. and reduce volume.
It improves the space utilization rate of folding trolleys when transporting small quantities of items, reduces the overall volume, reduces the impact in crowded places, and makes it more convenient to use.
Smart Images
Figure CN222157525U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of folding carts, in particular to a folding cart with variable volume. Background Art
[0002] A folding cart refers to a cart that can be folded to reduce its size. After the current folding cart is opened, its internal space is basically determined, especially the length and width cannot be changed. For example, a folding cart disclosed in Chinese patent CN209700727U has the above problem. This results in consumers having to use the same space no matter how many items they transport, especially when transporting fewer items, a large space is required, and the utilization rate of the entire vehicle body is not high; in addition, in public places with relatively dense traffic, such as supermarkets, concerts, shopping malls, scenic spots, etc., because the vehicle body is long, turning and turning around will affect other people, making it inconvenient to use. Utility Model Content
[0003] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a foldable cart with variable volume, so as to solve the technical problems that the foldable cart in the prior art has low space utilization when transporting fewer items and is easy to affect others in crowded places, causing inconvenience in use.
[0004] To solve the above technical problems, the utility model provides a foldable cart with variable volume, including a first foldable bin and a second foldable bin, the first foldable bin including a foldable first bottom frame and a foldable first side frame, the first side frame being connected to the left or right side of the first bottom frame, a first storage cavity being formed between the first side frame and the first bottom frame, the second foldable bin including a foldable second bottom frame and a foldable second side frame, the second side frame being connected to the left or right side of the second bottom frame, a second storage cavity being formed between the second side frame and the second bottom frame, the second foldable bin being connected to the front end of the first foldable bin, the first bottom frame, the first side frame, the second bottom frame and the second side frame are all folded along the front-to-back direction and enable the first foldable bin and the second foldable bin to be folded along the front-to-back direction respectively.
[0005] After adopting the above structure, the utility model has the following advantages: the first folding bin and the second folding bin are respectively provided with independent first bottom frame, first side frame and second bottom frame, and second side frame; the first bottom frame and first side frame in the first folding bin can both be folded along the front-rear direction; the second bottom frame and second side frame in the second folding bin can both be folded along the front-rear direction; therefore, the first folding bin or the second folding bin can be folded independently; only the first folding bin can be folded while the second folding bin is kept unfolded; or only the second folding bin can be folded while the first folding bin is kept unfolded; when placing a small amount of articles, the first folding bin or the second folding bin can be folded, thereby improving the space utilization rate of the folding bin; at the same time, after the first folding bin or the second folding bin is folded, the overall volume of the folding bin is also reduced, thereby reducing the impact on others in crowded places, making it more convenient to use.
[0006] As an improvement, the first folding bin also includes a first connecting component and a second connecting component, the second folding bin also includes a third connecting component, the front and rear ends of the first bottom frame are respectively connected to the second connecting component and the first connecting component, the front and rear ends of the first side frame are respectively connected to the second connecting component and the first connecting component, the front and rear ends of the second bottom frame are respectively connected to the third connecting component and the second connecting component, and the front and rear ends of the second side frame are respectively connected to the third connecting component and the second connecting component; the first folding bin is connected to the second folding bin by using the second connecting component.
[0007] As an improvement, the first connecting component includes a first column and a first beam connected to the lower part of the first column, the second connecting component includes a second column and a second beam connected to the lower part of the second column, the third connecting component includes a third column and a third beam connected to the lower part of the third column, the front and rear ends of the first bottom frame are respectively connected to the second beam and the first beam or respectively connected to the second column and the first column, the front and rear ends of the first side frame are respectively connected to the second column and the first column, the front and rear ends of the second bottom frame are respectively connected to the third beam and the second beam or respectively connected to the third column and the second column, and the front and rear ends of the second side frame are respectively connected to the third column and the second column; with this structure, the first folding bin and the second folding bin share the second column, which simplifies the structure and reduces costs.
[0008] As an improvement, the first side frame includes a first scissor-type hinge, a first slider is vertically slidably connected to the upper edge of the first column, a second slider is vertically slidably connected to the upper edge of the second column, the upper ends of the front and rear parts of the first scissor-type hinge are respectively hinged to the second column and the first column, and the lower ends of the front and rear parts of the first scissor-type hinge are respectively hinged to the second slider and the first slider; the second side frame includes a second scissor-type hinge, a third slider is vertically slidably connected to the upper edge of the second column, a fourth slider is vertically slidably connected to the upper edge of the third column, the upper ends of the front and rear parts of the second scissor-type hinge are respectively hinged to the third column and the second column, and the lower ends of the front and rear parts of the second scissor-type hinge are respectively hinged to the fourth slider and the third slider; the first bottom frame includes a plurality of first connecting plates hinged front and back, the front part of the first connecting plate located at the frontmost side is hinged to the second column, and the rear part of the first connecting plate located at the rearmost side is hinged to the first column, and the second bottom frame includes a plurality of second connecting plates hinged front and back, the front part of the second connecting plate located at the frontmost side is hinged to the third column, and the rear part of the second connecting plate located at the rearmost side is hinged to the second column.
[0009] As an improvement, telescopic rods are vertically slidably connected to the top ends of the first column, the second column and the third column; with this structure, the telescopic rods move upward and extend from the first column, the second column and the third column, increasing the overall height of the folding cart, thereby expanding the volume of the first storage cavity and the second storage cavity, so that the folding cart can load more cargo.
[0010] As an improvement, there are two first columns and two third columns, the two first columns are connected to the left and right ends of the first beam respectively, and the two third columns are connected to the left and right ends of the third beam respectively; adopting this structure can improve the stability of the overall structure.
[0011] As an improvement, the rear portion of the bottom end of the first folding bin is connected to two left and right first wheels, the front portion of the bottom end of the second folding bin is connected to two left and right first wheels, and the bottom end of the first folding bin or the second folding bin is connected to a second wheel. When the first folding bin is folded, the second wheel is coaxial with the two first wheels at the bottom end of the first folding bin and is located between the two first wheels. With this structure, the overall strength of the folding cart is improved by arranging the second wheel, and the coaxial arrangement of the first wheel and the second wheel when folding can make the pulling process of the folding cart smoother.
[0012] As an improvement, a tipping bucket is hinged at the rear end of the first folding bin or the front end of the second folding bin, and the rotation axis of the tipping bucket is arranged in the left-right direction. The tipping bucket can be placed in a horizontal or vertical state by rotating the tipping bucket. With this structure, the tipping bucket is rotated to a horizontal state to expand the storage space of the folding cart, so that more goods can be loaded. When less goods are loaded, the tipping bucket can be rotated to a vertical state to reduce the overall volume of the folding cart.
[0013] As an improvement, the first folding compartment or the second folding compartment can be folded and unfolded separately. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model when it is fully unfolded.
[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model when the first folding compartment is folded and the second folding compartment is opened.
[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model when it is half unfolded.
[0017] Figure 4 Schematic diagrams of various structures of the first scissor-type hinge and the second scissor-type hinge in the utility model.
[0018] Figure numerals: 100, first folding bin; 200, second folding bin; 1, pull rod; 2, first wheel; 3, first bottom frame; 31, first connecting plate; 4, first side frame; 41, first scissors-type hinge; 5, first storage cavity; 6, second bottom frame; 61, second connecting plate; 7, second side frame; 71, second scissors-type hinge; 8, second storage cavity; 9, second wheel; 10, first slider; 11, second slider; 12, third slider; 13, fourth slider; 14, first connecting assembly; 141, first column; 142, first cross beam; 15, second connecting assembly; 151, second column; 152, second cross beam; 16, third connecting assembly; 161, third column; 162, third cross beam; 17, telescopic rod; 18, tipping bucket. DETAILED DESCRIPTION
[0019] The following is a detailed description of a foldable cart with variable volume according to the present invention in conjunction with the accompanying drawings.
[0020] like Figures 1 to 4As shown, a foldable cart with variable volume includes a first foldable bin 100, a second foldable bin 200, a pull rod 1 and a plurality of first wheels 2, the first foldable bin 100 includes a foldable first bottom frame 3 and a foldable first side frame 4, the first side frame 4 is connected to the left or right side of the first bottom frame 3, a first storage cavity 5 is formed between the first side frame 4 and the first bottom frame 3, the second foldable bin 200 includes a foldable second bottom frame 6 and a foldable second side frame 7, the second side frame 7 is connected to the left or right side of the second bottom frame 6, a second storage cavity 8 is formed between the second side frame 7 and the second bottom frame 6, the second foldable bin 200 is connected to the front end of the first foldable bin 100, the first bottom frame 3, the first side frame 4, the second bottom frame 6 and the second side frame 7 are all folded in the front-to-back direction and enable the first foldable bin 100 and the second foldable bin 200 to be folded in the front-to-back direction respectively, and the first foldable bin 100 or the second foldable bin 200 can be folded and unfolded separately.
[0021] like Figure 1 As shown, the first folding bin 100 also includes a first connecting component 14 and a second connecting component 15, the second folding bin 200 also includes a third connecting component 16, the front and rear ends of the first bottom frame 3 are respectively connected to the second connecting component 15 and the first connecting component 14, the front and rear ends of the first side frame 4 are respectively connected to the second connecting component 15 and the first connecting component 14, the front and rear ends of the second bottom frame 6 are respectively connected to the third connecting component 16 and the second connecting component 15, and the front and rear ends of the second side frame 7 are respectively connected to the third connecting component 16 and the second connecting component 15.
[0022] like Figure 1 As shown, the first connecting component 14 includes a first column 141 and a first beam 142 connected to the lower part of the first column 141, the second connecting component 15 includes a second column 151 and a second beam 152 connected to the lower part of the second column 151, the third connecting component 16 includes a third column 161 and a third beam 162 connected to the lower part of the third column 161, the front and rear ends of the first bottom frame 3 are respectively connected to the second beam 152 and the first beam 142 or respectively connected to the second column 151 and the first column 141, the front and rear ends of the first side frame 4 are respectively connected to the second column 151 and the first column 141, the front and rear ends of the second bottom frame 6 are respectively connected to the third beam 162 and the second beam 152 or respectively connected to the third column 161 and the second column 151, and the front and rear ends of the second side frame 7 are respectively connected to the third column 161 and the second column 151.
[0023] like Figure 1As shown, the first side frame 4 includes a first scissor-type hinge 41, a first slider 10 is vertically slidably connected to the upper edge of the first column 141, a second slider 11 is vertically slidably connected to the upper edge of the second column 151, the upper end of the front and rear parts of the first scissor-type hinge 41 is respectively hinged to the second column 151 and the first column 141, and the lower end of the front and rear parts of the first scissor-type hinge 41 is respectively hinged to the second slider 11 and the first slider 10; the second side frame 7 includes a second scissor-type hinge 71, a third slider 12 is vertically slidably connected to the upper edge of the second column 151, a fourth slider 13 is vertically slidably connected to the upper edge of the third column 161, and the second scissor-type hinge 71 is vertically slidably connected to the upper edge of the second column 151. The upper ends of the front and rear parts of 71 are hinged to the third column 161 and the second column 151 respectively, and the lower ends of the front and rear parts of the second scissor-type hinge 71 are hinged to the fourth slider 13 and the third slider 12 respectively; the first bottom frame 3 includes a plurality of first connecting plates 31 hinged front and rear, the front part of the first connecting plate 31 located at the frontmost side is hinged to the second column 151, and the rear part of the first connecting plate 31 located at the rearmost side is hinged to the first column 141; the second bottom frame 6 includes a plurality of second connecting plates 61 hinged front and rear, the front part of the second connecting plate 61 located at the frontmost side is hinged to the third column 161, and the rear part of the second connecting plate 61 located at the rearmost side is hinged to the second column 151.
[0024] In addition, in this embodiment, there are two first columns 141, two second columns 151 and three columns 161, the two first columns 141 are respectively connected to the left and right ends of the first beam 142, the two second columns 151 are respectively connected to the left and right ends of the second beam 152, the two third columns 161 are respectively connected to the left and right ends of the third beam 162, a first side frame 4 is connected between the first column 141 and the second column 151 on the same side, and a second side frame 7 is connected between the second column 151 and the third column 161 on the same side; that is, That is, in this embodiment, the first side frame 4 of the first folding bin 100 is two, and the two first side frames 4 are respectively connected to the left and right sides of the first bottom frame 3, and the second side frame 7 of the second folding bin 200 is also two, and the two second side frames 7 are respectively connected to the left and right sides of the second bottom frame 6, and the second bottom frame 6 is connected to the front end of the first bottom frame 3, and the two second side frames 7 are respectively connected to the front ends of the two first side frames 4; the lower parts of the two first columns 141 are respectively hinged to the left and right ends of the rear part of the first bottom frame 3, and the lower parts of the two second columns 151 are respectively hinged to the front part of the first bottom frame 3. The left and right ends of each first column 141 are connected to the first slider 10 in a vertical sliding manner, and each second column 151 is connected to the second slider 11 in a vertical sliding manner. The lower parts of the two third columns 161 are respectively hinged to the left and right ends of the front part of the second bottom frame 6, and each second column 151 is connected to the third slider 12 in a vertical sliding manner, and each third column 161 is connected to the fourth slider 13 in a vertical sliding manner. Specifically, there are two first connecting plates 31 and second connecting plates 61, and the left and right ends of the front part of the first connecting plate 31 on the front side are connected to the left and right ends of the front part of the second bottom frame 6. The two ends are respectively hinged to the two second upright posts 151, the left and right ends of the rear part of the first connecting plate 31 at the rear side are respectively hinged to the two first upright posts 141, the left and right ends of the front part of the second connecting plate 61 at the front side are respectively hinged to the two third upright posts 161, and the left and right ends of the rear part of the second connecting plate 61 at the rear side are respectively hinged to the two second upright posts 151; in this embodiment, the rear part of the second connecting plate 61 at the rear side is directly hinged to the second upright posts 151, while the front part of the first connecting plate 31 at the front side is hinged to the second connecting plate 61. In some other embodiments, only one second upright post 151 is provided, and there is only one first side frame 4 and one second side frame 7, forming a single-side open cart.
[0025] In this embodiment, the first scissor-type hinge 41 includes only one set of scissor-type hinges, that is, two cross-hinged connecting rods, while the second scissor-type hinge 71 is composed of two sets of front-to-back hinged scissor-type hinges. Figure 4 As shown, the accompanying drawing shows four types of first scissors-type hinges 41 and second scissors-type hinges 71. In actual production design, different first scissors-type hinges 41 and second scissors-type hinges 71 can be selected as needed. Of course, the first scissors-type hinges 41 and second scissors-type hinges 71 are not limited to the above-mentioned four forms.
[0026] like Figure 1 As shown, the lower end of the third slider 12 in this embodiment is against the top of the second slider 11, so that when the second folding bin 200 is folded, the third slider 12 slides down so that the second slider 11 also slides down, so that the first folding bin 100 is folded together, and when the first folding bin 100 is folded, the sliding of the second slider 11 will not cause the third slider 12 to also slide down; in addition, the second slider 11 can also be located on the sliding path of the third slider 12 to achieve the above effect; the above structural design makes it impossible to achieve the state in this embodiment where the second folding bin 200 is folded and the first folding bin 100 is unfolded; and in some other embodiments, the third slider 12 does not abut against the second slider 11, and the sliding paths of the third slider 12 and the second slider 11 do not interfere with each other, so that both The second folding bin 200 can be folded and the first folding bin 100 can be unfolded, or the second folding bin 200 can be unfolded and the first folding bin 100 can be closed. In addition, the first folding bin 100 and the second folding bin 200 in this embodiment share the second column 151, while in some other embodiments, the first folding bin 100 and the second folding bin 200 do not share the second column 151, that is, the second folding bin 200 is provided with a fourth column parallel to the second column 151, so that the second scissor-type hinge 71 is connected to the fourth column, which can also achieve the state of the second folding bin 200 being folded and the first folding bin 100 being unfolded, or the state of the second folding bin 200 being unfolded and the first folding bin 100 being closed. In this embodiment, the first storage chamber 5 and the second storage chamber 8 are interconnected along the front-to-back direction, while in some other embodiments, a partition can be provided between the first folding bin 100 and the second folding bin 200, so that the first storage chamber 5 and the second storage chamber 8 are independent of each other.
[0027] like Figure 1 As shown, a telescopic rod 17 is vertically slidably connected to the top of each first column 141, each second column 151 and each third column 161. In the figure, several telescopic rods 17 extend from the top of the first column 141, the second column 151 and the third column 161 respectively. When not in use, several telescopic rods 17 are located in the first column 141, the second column 151 and the third column 161. It should be noted that in order to ensure that the telescopic rod 17 does not automatically retract due to gravity when extended, there should be sufficient friction between the telescopic rod 17 and the first column 141, the second column 151 and the third column 161, or a limiting mechanism is set between the telescopic rod 17 and the first column 141, the second column 151 and the third column 161 to prevent the telescopic rod 17 from retracting. The specific structure of the limiting mechanism is prior art and will not be repeated here.
[0028] like Figure 1 and Figure 2As shown, a plurality of first wheels 2 are connected to the bottom end of the first folding bin 100 and / or the second folding bin 200, and the pull rod 1 is connected to the first folding bin 100 or the second folding bin 200; the rear portion of the bottom end of the first folding bin 100 is connected to two left and right first wheels 2, the front portion of the bottom end of the second folding bin 200 is connected to two left and right first wheels 2, and the bottom end of the first folding bin 100 or the second folding bin 200 is connected to a second wheel 9; when the first folding bin 100 is folded, the second wheel 9 is coaxial with the two first wheels 2 at the bottom end of the first folding bin 100 and is located between the two first wheels 2; when the second folding bin 200 is folded, the second wheel 9 is coaxial with the two first wheels 2 at the bottom end of the second folding bin 200 and is located between the two first wheels 2; specifically, the two first wheels 2 are connected to the bottom end of the first beam 142, the two first wheels 2 are connected to the bottom end of the third beam 162, and the second wheel 9 is connected to the bottom end of the second beam 152.
[0029] In addition, a bucket 18 is hinged at the rear end of the first folding bin 100 or the front end of the second folding bin 200, and the rotation axis of the bucket 18 is arranged in the left-right direction. The bucket 18 is placed in a horizontal or vertical state by rotating the bucket 18. In this embodiment, the pull rod 1 is connected to the front end of the second folding bin 200, and the bucket 18 is connected to the rear end of the first folding bin 100; specifically, the pull rod 1 is connected to the third cross beam 162, and the pull rod 1 is also a telescopic structure, and the bucket 18 is connected to the first cross beam 142.
[0030] In the utility model, the first folding bin 100 and the second folding bin 200 are respectively provided with independent first bottom frame 3, first side frame 4, second bottom frame 6, and second side frame 7. The first bottom frame 3 and the first side frame 4 in the first folding bin 100 can be folded in the front-to-back direction, and the second bottom frame 6 and the second side frame 7 in the second folding bin 200 can be folded in the front-to-back direction. Therefore, the first folding bin 100 and the second folding bin 200 can be folded independently. Only the first folding bin 100 can be folded while the second folding bin 200 is kept unfolded, or only the second folding bin 200 can be folded while the first folding bin 100 is kept unfolded. When placing a small amount of items, the first folding bin 100 or the second folding bin 200 is folded, thereby improving the space utilization rate of the folding cart. At the same time, after the first folding bin 100 or the second folding bin 200 is folded, the overall volume of the folding cart is also reduced, which reduces the impact on others in crowded places and makes it more convenient to use.
[0031] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned one implementation mode, and all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.
Claims
1. A foldable cart with variable volume, It is characterized in that The invention comprises a first folding bin (100) and a second folding bin (200), wherein the first folding bin (100) comprises a foldable first bottom frame (3) and a foldable first side frame (4), wherein the first side frame (4) is connected to the left side or the right side of the first bottom frame (3), and a first storage cavity (5) is formed between the first side frame (4) and the first bottom frame (3); the second folding bin (200) comprises a foldable second bottom frame (6) and a foldable second side frame (7), wherein the second side frame (7) is connected to the left side or the right side of the second bottom frame (6), and a second storage cavity (8) is formed between the second side frame (7) and the second bottom frame (6); the second folding bin (200) is connected to the front end of the first folding bin (100), and the first bottom frame (3), the first side frame (4), the second bottom frame (6) and the second side frame (7) are all foldable in the front-to-back direction so that the first folding bin (100) and the second folding bin (200) can be folded in the front-to-back direction respectively.
2. The foldable stroller with variable volume according to claim 1, It is characterized in that The first folding bin (100) further comprises a first connecting component (14) and a second connecting component (15); the second folding bin (200) further comprises a third connecting component (16); the front and rear ends of the first bottom frame (3) are respectively connected to the second connecting component (15) and the first connecting component (14); the front and rear ends of the first side frame (4) are respectively connected to the second connecting component (15) and the first connecting component (14); the front and rear ends of the second bottom frame (6) are respectively connected to the third connecting component (16) and the second connecting component (15); and the front and rear ends of the second side frame (7) are respectively connected to the third connecting component (16) and the second connecting component (15).
3. The foldable stroller with variable volume according to claim 2, It is characterized in that The first connecting assembly (14) comprises a first column (141) and a first crossbeam (142) connected to the lower part of the first column (141); the second connecting assembly (15) comprises a second column (151) and a second crossbeam (152) connected to the lower part of the second column (151); the third connecting assembly (16) comprises a third column (161) and a third crossbeam (162) connected to the lower part of the third column (161); the front and rear ends of the first bottom frame (3) are respectively connected to the second crossbeam (152) and the first The cross beam (142) is connected to the second column (151) and the first column (141) respectively; the front and rear ends of the first side frame (4) are connected to the second column (151) and the first column (141) respectively; the front and rear ends of the second bottom frame (6) are connected to the third cross beam (162) and the second cross beam (152) or are connected to the third column (161) and the second column (151) respectively; and the front and rear ends of the second side frame (7) are connected to the third column (161) and the second column (151) respectively.
4. The foldable stroller with variable volume according to claim 3, It is characterized in that The first side frame (4) comprises a first scissor-type hinge (41), a first slider (10) is vertically slidably connected to the upper edge of the first column (141), a second slider (11) is vertically slidably connected to the upper edge of the second column (151), the upper ends of the front and rear portions of the first scissor-type hinge (41) are respectively hinged to the second column (151) and the first column (141), and the lower ends of the front and rear portions of the first scissor-type hinge (41) are respectively hinged to the second slider (11) and the first slider (10); the second side frame (7) comprises a second scissor-type hinge (71), a third slider (12) is vertically slidably connected to the upper edge of the second column (151), a fourth slider (13) is vertically slidably connected to the upper edge of the third column (161), and the second scissor-type hinge (71) is The upper ends of the front and rear parts are respectively hinged to the third column (161) and the second column (151); the lower ends of the front and rear parts of the second scissor-type hinge (71) are respectively hinged to the fourth slider (13) and the third slider (12); the first bottom frame (3) includes a plurality of first connecting plates (31) hinged front and rear; the front part of the first connecting plate (31) located at the frontmost side is hinged to the second column (151); the rear part of the first connecting plate (31) located at the rearmost side is hinged to the first column (141); the second bottom frame (6) includes a plurality of second connecting plates (61) hinged front and rear; the front part of the second connecting plate (61) located at the frontmost side is hinged to the third column (161); the rear part of the second connecting plate (61) located at the rearmost side is hinged to the second column (151).
5. The foldable stroller with variable volume according to claim 3, It is characterized in that A telescopic rod (17) is vertically slidably connected to the top of each of the first column (141), the second column (151) and the third column (161).
6. The foldable stroller with variable volume according to claim 3, It is characterized in that There are two of each of the first upright column (141) and the third upright column (161), the two first upright columns (141) are respectively connected to the left and right ends of the first cross beam (142), and the two third upright columns (161) are respectively connected to the left and right ends of the third cross beam (162).
7. The foldable stroller with variable volume according to claim 1, It is characterized in that The rear part of the bottom end of the first folding bin (100) is connected to two left and right first wheels (2), the front part of the bottom end of the second folding bin (200) is connected to two left and right first wheels (2), the bottom end of the first folding bin (100) or the second folding bin (200) is connected to a second wheel (9), and when the first folding bin (100) is folded, the second wheel (9) is coaxial with the two first wheels (2) at the bottom end of the first folding bin (100) and is located between the two first wheels (2).
8. The foldable stroller with variable volume according to claim 1, It is characterized in that A tipping bucket (18) is hingedly connected to the rear end of the first folding bin (100) or the front end of the second folding bin (200); the rotation axis of the tipping bucket (18) is arranged in the left-right direction; and the tipping bucket (18) is placed in a horizontal or vertical state by rotating the tipping bucket (18).
9. The foldable stroller with variable volume according to claim 1, It is characterized in that The first folding compartment (100) or the second folding compartment (200) can be folded and unfolded separately.