Foldable portable shopping cart
By designing a foldable and portable shopping cart, using a combination of an upper pull rod, a lower pull rod, and a horizontal support structure, and incorporating mudguards, the problems of weak load-bearing capacity and friction in the shopping cart are solved, improving the user experience and portability.
Patent Information
- Application Number
- CN202520528221.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-25
AI Technical Summary
Existing portable shopping carts have a short lifespan and weak load-bearing capacity. The edges of the shopping bags are prone to friction with the wheels, which causes dirt to stick, especially on muddy roads, resulting in a poor user experience.
A foldable portable shopping cart was designed, which uses an upper and lower pull rod connected by a first folding component, a horizontal bracket and a wheel connector to form a cantilever support, mudguards, and foot support and horizontal bracket adjusted by a second folding component to achieve multi-angle folding and effortless pulling.
It improves the load-bearing capacity of the shopping cart, avoids contact between shopping bags and wheels, reduces friction, extends service life, takes up little space, and is easy to carry.
Smart Images

Figure CN223803580U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to daily life technical field, concretely relates to a foldable portable shopping cart. BACKGROUND
[0002] The daily shopping transport cart brings the convenience to people's shopping, and the portable shopping trolley can transport various articles, including boxes, shopping bags and the like, greatly reducing the load of the shoppers.
[0003] The current portable shopping cart is commonly used for shopping needs in supermarkets or markets, the service life of the shopping cart is short, the bearing capacity is weak, especially the position of the supporting shaft connected with the wheels, the thin supporting shaft will be deformed after long time use; at the same time, after placing the shopping bags containing articles on the shopping cart, the edge of the shopping bag often contacts the walking wheels, and the walking wheels rub the shopping bag when pulling the shopping cart, especially when using on the muddy road, some dirt such as mud will be attached on the shopping bag, and the pulling force of the shopping cart is also increased, which brings many troubles to the user, and the use experience is poor. CONTENT OF THE UTILITY MODEL
[0004] In order to solve the problems in the prior art, the utility model provides a foldable portable shopping cart, which can more conveniently pull the shopping cart to walk, has good bearing capacity, the shopping bag placed on the shopping cart will not contact the wheels, the shopping cart is more labor-saving to pull, and is convenient to fold and store, so that more space is avoided.
[0005] The utility model adopts the following technical scheme:
[0006] A foldable portable shopping cart, including a pull rod, a bearing platform and a walking wheel, the lower end of the pull rod is fixedly connected with the upper end of the bearing platform, the walking wheel is installed at the bottom end of the bearing platform, the pull rod includes an upper pull rod, a lower pull rod and a first folding assembly arranged between the upper pull rod and the lower pull rod, and the folding angle of the upper pull rod is controlled through the first folding assembly; the bearing platform includes a wheel connector and a horizontal support, the upper end surface of the wheel connector is fixedly connected with the lower end of the lower pull rod, the two side surfaces of the wheel connector are rotationally connected with the rotating shaft penetrating the walking wheel, one end of the horizontal support is connected with the wheel connector through a connecting shaft penetrating both, so that the horizontal support is installed in a cantilevered manner on the wheel connector, forming horizontal support; the horizontal support height of the horizontal support is greater than the height of the walking wheel, and can be upwardly rotated after the connecting shaft to form a folded shape.
[0007] Further, the other end of the horizontal support is also provided with a foot prop, a plurality of folding angles are formed between the upper end of the foot prop and the horizontal support through a second folding assembly, and the lower end of the foot prop abuts against the ground.
[0008] Further, a flat plate is installed on the horizontal support, and the flat plate is detachably clamped and fixed with the horizontal support.
[0009] Further, a mudguard is arranged on the walking wheel, and the height of the mudguard is lower than the height of the horizontal support in the horizontal support state.
[0010] Preferably, the first folding assembly and the second folding assembly each comprise a round rod lock shaft, a lock shaft, a folding connecting assembly and an operating connecting assembly, the lock shaft is installed at both ends of the round rod lock shaft in a plug-in manner, the lock shaft is a hollow shaft structure, and a radial through hole for installing a steel ball is arranged on the lock shaft;
[0011] The folding connecting assembly comprises a connecting sleeve I and a rotating sleeve, the connecting sleeve I is vertically connected with the rotating sleeve, the inner side of the rotating sleeve forms a plurality of axially arranged separation teeth, and the rotating sleeve is sleeved on the lock shaft close to one end of the round rod lock shaft;
[0012] The operating connecting assembly comprises a button shaft, a spring, a shaft sleeve and a connecting sleeve II, the shaft sleeve is vertically and fixedly connected with the connecting sleeve II, a steel ball lifting surface, a steel ball descending surface, a spring mounting portion and a pressing portion are sequentially arranged on the button shaft in an axial direction, an outer limiting ring is arranged between the spring mounting portion and the pressing portion, one end of the spring is arranged in the spring mounting portion from the steel ball lifting surface, and the other end of the spring abuts against the outer limiting ring, the button shaft is arranged in the cavity of the lock shaft, the other end of the spring abuts against the inner limiting ring of the lock shaft, the shaft sleeve is sleeved on the other end of the lock shaft away from the round rod lock shaft, and the two are fixedly connected through a connecting piece, the pressing portion is arranged in the shaft sleeve, and the outer limiting ring abuts against the inner side of the outer end surface of the shaft sleeve under the action of the spring;
[0013] Under the action of the spring, the steel ball abuts against the steel ball lifting surface, and the steel ball is arranged in the groove between the two separation teeth; when the pressing portion is manually pressed, the steel ball slides to the steel ball descending surface, so that the steel ball is separated from the groove between the two separation teeth.
[0014] Further preferably, the lower end of the upper pull rod is plug-in fixed on the connecting sleeve I, the upper end of the lower pull rod is plug-in fixed on the connecting sleeve II, and a plurality of folding angles are formed between the upper pull rod and the lower pull rod through the first folding assembly.
[0015] Further preferably, the foot support is a U-shaped support, two ends of which are respectively inserted and fixed with the connecting sleeves I located at two ends of the round rod lock shaft, and the horizontal support is respectively inserted and fixed with the connecting sleeves II located at two ends of the round rod lock shaft, and a plurality of folding angles are formed between the foot support and the horizontal support through the second folding assembly.
[0016] Preferably, the wheel connector is in the shape of a "J", a lower end surface of which is provided with a plurality of spaced connecting shaft seats I arranged along a length direction of the wheel connector, the connecting shaft seats I are provided with through holes I, an end portion of the horizontal support is provided with a plurality of spaced connecting shaft seats II arranged along a length direction of the horizontal support, the connecting shaft seats II are provided with through holes II, and after the horizontal support is connected with the wheel connector, the connecting shaft is sequentially inserted through the through holes I and the through holes II arranged in a staggered manner, and when the horizontal support is arranged in an unfolded manner, upper end surfaces of the connecting shaft seats II are clamped at the lower end surface of the wheel connector.
[0017] The technical scheme of the utility model has the following advantages:
[0018] A. The utility model divides the pull rod into two parts, i.e., an upper pull rod and a lower pull rod, and the upper pull rod and the lower pull rod are connected through a first folding assembly, and a plurality of folding angles are formed between the upper pull rod and the lower pull rod under the action of the first folding assembly, so that the utility model is suitable for users of different heights and has a good experience; the horizontal support for carrying articles can also be folded and stored, and the upper pull rod and the horizontal support can be completely folded to occupy a small space and be convenient to carry, thereby bringing great convenience to users.
[0019] B. The utility model is provided with a mudguard on the walking wheel, and the height of the mudguard is lower than the height of the horizontal support in the unfolded state, so that the shopping bag placed on the horizontal support will not touch the walking wheel, thereby avoiding affecting the forward movement of the shopping cart.
[0020] C. The utility model is provided with a first folding assembly on the pull rod, and a second folding assembly is arranged between the foot support and the horizontal support, so that the support angle of the foot support and the pulling angle of the upper pull rod can be adjusted according to different users, and the utility model is suitable for users of different heights. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the specific embodiments of the utility model, the drawings needed in the specific embodiments will be briefly introduced below, and obviously, the drawings described below are some embodiments of the utility model, and other drawings can also be obtained according to the drawings without creative labor for those skilled in the art.
[0022] Figure 1The utility model provides a shopping cart use state schematic drawing is provided;
[0023] Figure 2 The utility model provides a shopping cart folding state schematic drawing is provided;
[0024] Figure 3 For Figure 1 The explosion view among walking wheel, horizontal support, pull rod in it;
[0025] Figure 4 For Figure 1 The explosion view of pull rod and wheel connector in it;
[0026] Figure 5 For Figure 1 The connection schematic drawing between horizontal support and foot support in it;
[0027] Figure 6 For Figure 4 The button shaft structure schematic drawing in it;
[0028] Figure 7 For Figure 4 The locking shaft sectional view in it;
[0029] Figure 8 For Figure 4 The folding connection assembly perspective view in it;
[0030] Figure 9 For Figure 4 The shaft sleeve and connecting sleeve II connection schematic drawing in it.
[0031] Identified as follows in the drawing:
[0032] 1-pull rod
[0033] 11-upper pull rod, 12-lower pull rod
[0034] 2-bearing platform
[0035] 21-wheel connector
[0036] 211-connection shaft seat I, 211a-through hole I
[0037] 221-connection shaft seat II, 221a-through hole II
[0038] 22-horizontal support, 23-connection shaft, 24-foot support, 25-flat plate
[0039] 3-walking wheel
[0040] 31-rotating shaft, 32-fender
[0041] 4a-first folding assembly, 4b-second folding assembly
[0042] 41 - round rod lock shaft
[0043] 42 - lock shaft
[0044] 421 - inner limit ring
[0045] 43 - folding connection assembly
[0046] 431 - connecting sleeve I
[0047] 432 - rotating sleeve, 4321 - spacer tooth
[0048] 44 - operation connection assembly
[0049] 441 - button shaft
[0050] 4411 - steel ball lifting surface, 4412 - steel ball lowering surface, 4413 - spring mounting portion
[0051] 4414 - pressing portion, 4415 - outer limit ring
[0052] 442 - spring, 443 - shaft sleeve, 444 - connecting sleeve II
[0053] 5 - steel ball, a - radial through hole. DETAILED DESCRIPTION
[0054] The technical solutions of the utility model will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the protection scope of the utility model.
[0055] As Figure 1 and Figure 2As shown in the utility model provides a kind of foldable portable shopping cart, including pull rod 1, load platform 2 and walking wheel 3, the lower end of pull rod 1 is fixedly connected with the upper end of load platform 2, walking wheel 3 is installed in the bottom end of load platform 2, preferably ordinary rubber wheel, for commercially available product.The utility model divides pull rod 1 into two parts of upper pull rod 11 and lower pull rod 12, upper pull rod 11 adopts U-shaped structure, lower pull rod 12 adopts H-shaped structure, upper pull rod 11 is connected between lower pull rod 12 by two first folding components 4a, the folding angle of upper pull rod 11 is controlled by first folding component 4a, so that upper pull rod 11 can be rotated to the angle required, for example, upper pull rod 11 can be 180 ° with lower pull rod 12, of course, after folding upper pull rod 11 completely, upper pull rod 11 is completely attached on lower pull rod 12;Load platform 2 is used to place some shopping bags or directly place some purchased goods on it, and load platform 2 mainly includes wheel connector 21 and horizontal support 22, the upper end surface of wheel connector 21 is fixedly connected with the lower end of lower pull rod 12, the two side surfaces of wheel connector 21 are rotatably connected with rotating shaft 31 penetrating walking wheel 3, one end of horizontal support 22 is connected with wheel connector 21 by connecting shaft 23 penetrating both, so that horizontal support 22 is installed in cantilevered manner on wheel connector 21, forming horizontal support, and some goods can be placed above horizontal support 22.The horizontal support height of horizontal support 22 is greater than the height of walking wheel 3, and can be rotated upward after being connected with connecting shaft 23 to form folded shape, when horizontal support 22 is placed in perpendicular state with pull rod, goods can be placed on it, horizontal support 22 plays a good load bearing role on goods, when not in use, horizontal support 22 and upper pull rod 11 can be folded, to further reduce the occupied space, greatly improve the portable performance of shopping cart, and the use experience is good.
[0056] As a further preferred embodiment of the utility model, a foot prop 24 is further provided at the other end of horizontal support 22, and the upper end of foot prop 24 forms multiple folding angles between horizontal support 22 through second folding component 4b, when the lower end of foot prop 24 abuts against the ground, the entire shopping cart can be kept in standing state, when not in use, foot prop 24 and horizontal support 22 and upper pull rod 11 can be folded up, as Figure 2 As shown, it is more convenient to place some small goods, and a flat plate 25 can also be laid on horizontal support 22, and the flat plate 25 is in groove-shaped structure, and the flat plate 25 and horizontal support 22 are detachably clamped and fixed.
[0057] As a further preferred embodiment of the utility model, a mudguard 32 is further fixed on each walking wheel 3, and the height of mudguard 32 is lower than the height of horizontal support 22 in horizontal support state, especially when the shopping cart is used on muddy road, the setting of mudguard 32 avoids scratching the dirty things adhered on walking wheel onto shopping bag.
[0058] Combination Figures 3 to 9 The first folding assembly 4a and the second folding assembly 4b are identical in structure, comprising: a round rod lock shaft 41, a lock shaft 42, a folding connection assembly 43 and an operation connection assembly 44, the lock shaft 42 is installed at both ends of the round rod lock shaft 41 in a plug-in manner, the lock shaft 42 is a hollow shaft structure, and a radial through hole a for installing a steel ball 5 is arranged on the lock shaft 42, as shown in Figure 7 The lock shaft 42 in the utility model is partially a solid shaft and partially a hollow shaft processed, the diameter of the solid shaft part is smaller than the outer diameter of the remaining part, the outer diameter of the solid shaft part is smaller than the inner diameter of the round rod lock shaft 41, the solid shaft part is plugged into the round rod lock shaft 41, and the insertion depth of the solid shaft part is controlled through a shaft shoulder on Figure 7 The hollow shaft part in Figure 7 is further provided with two radial through holes a penetrating through, the radial through hole a is used for preventing the steel ball 5, and the upper surface of the steel ball 5 can protrude out of the outer side surface of the lock shaft 42; a stepped shaft hole is further formed at the left end position of the lock shaft 42, that is, an inner limiting ring 421 is formed, and the cavity of this part is used for preventing the spring 442, so that the left end of the spring 442 is in abutment with the inner limiting ring 421.
[0059] As shown in Figure 4 and Figure 8 , the folding connection assembly 43 comprises a connecting sleeve I 431 and a rotating sleeve 432, the connecting sleeve I 431 is vertically connected with the rotating sleeve 432, the inner side surface of the rotating sleeve 432 forms a plurality of axially arranged separation teeth 4321, and the rotating sleeve 432 is sleeved on the lock shaft 42 close to one end of the round rod lock shaft 41.
[0060] As shown in Figure 4 and Figure 9 , the operation connection assembly 44 comprises a button shaft 441, a spring 442, a shaft sleeve 443 and a connecting sleeve II 444, the shaft sleeve 443 is vertically and fixedly connected with the connecting sleeve II 444, and a steel ball lifting surface 4411, a steel ball descending surface 4412, a spring mounting portion 4413 and a pressing portion 4414 are sequentially arranged on the button shaft 441 in an axial direction, as shown in Figure 6 The outer diameter of the steel ball lifting surface 4411 is greater than the outer diameter of the steel ball descending surface 4412, the outer diameter of the spring mounting portion 4413 can be equal to the outer diameter of the steel ball descending surface 4412, the outer diameter of the steel ball lifting surface 4411 is smaller than the inner diameter of the spring, an outer limiting ring 4415 is arranged between the spring mounting portion 4413 and the pressing portion 4414, the outer diameter of the outer limiting ring 4415 is greater than the inner diameter of the spring 442, the spring 442 is loaded into the spring mounting portion 4413 from one end of the steel ball lifting surface 4411, one end of the spring 442 is in abutment with the outer limiting ring 4415, the button shaft 441 is arranged in the cavity of the lock shaft 42, and the other end of the spring 442 is in abutment against the inner limiting ring 421 of the lock shaft 42, asFigure 3 As shown, the shaft sleeve 443 is sleeved on the locking shaft 42 away from the round rod lock shaft 41, and the two are fixedly connected through the connecting piece, the pressing part 4414 is extended from the shaft sleeve 443, and the outer limiting ring 4415 is in abutment with the inner side of the outer end surface of the shaft sleeve 443 under the action of the spring 442. The structure of the shaft sleeve 443 is as shown in Figure 9 As shown, Figure 9 The left end in the figure is provided with a through hole, and the end cap can limit the displacement of the outer limiting ring 4415. Here, in normal use, under the action of the spring 442, the steel ball 5 is in abutment with the steel ball lifting surface 4411, and the steel ball 5 is placed in the groove between the two separation teeth 4321; when the pressing part 4414 is manually pressed axially, the steel ball lowering surface 4412 on the locking shaft 441 reaches the position of the steel ball 5 on the locking shaft 42 with the movement of the locking shaft 441, and the steel ball 5 sinks to the position of the steel ball lowering surface 4412, so that the steel ball 5 is separated from the groove between the two separation teeth 4321, at this time, the position of the folding connecting assembly 43 can be rotated, and the folding angle of the pull rod and the support of the support can be adjusted.
[0061] Specifically, the lower end of the upper pull rod 11 is inserted and fixed on the connecting sleeve I 431, the upper end of the lower pull rod 12 is inserted and fixed on the connecting sleeve II 444, and a plurality of folding angles are formed between the upper pull rod 11 and the lower pull rod 12 through the first folding assembly 4a. Since a plurality of grooves are arranged in the inner cavity of the rotating sleeve 432, the steel ball is placed in different grooves to obtain different folding angles.
[0062] As shown, Figure 5 The support 24 is preferably a U-shaped support, and the two ends thereof are respectively inserted and fixed with the connecting sleeve I 431 located at the two ends of the round rod lock shaft 41, and the horizontal support 22 is respectively inserted and fixed with the connecting sleeve II 444 located at the two ends of the round rod lock shaft 41, and the connecting sleeve I is located inside the connecting sleeve II. A plurality of folding angles are formed between the support 24 and the horizontal support 22 through the second folding assembly 4b, so that the support can be folded and stored.
[0063] Combined with Figure 4 And Figure 5As shown, the wheel connector 21 is preferably in the shape of a Chinese character "j", and a plurality of spaced connecting shaft seats I 211 are arranged along the length direction of the lower end surface of the wheel connector 21, the connecting shaft seats I play a reinforcing role for the whole wheel connector, a through hole I (211a) is arranged on each connecting shaft seat I 211, and each through hole I is coaxially arranged; a plurality of spaced connecting shaft seats II 221 are arranged along the length direction of the end of the horizontal support 22, a through hole II 221a is arranged on each connecting shaft seat II 221, and each through hole II is coaxially arranged, after the horizontal support 22 and the wheel connector 21 are butted, the connecting shaft 23 is sequentially penetrated through the staggered through holes I 211a and the through holes II 221a, and then the horizontal support and the wheel connector are connected and fixed. When the horizontal support 22 is unfolded, the upper end surface of the connecting shaft seat II 221 is clamped at the lower end surface of the wheel connector 21, and the wheel connector 21 plays a certain supporting role for the horizontal support 22. The horizontal support 22 and the foot prop 24 for carrying articles are folded, and the upper pull rod is folded to form Figure 2 The storage structure occupies small space and is convenient to carry, thereby bringing many conveniences for users.
[0064] The upper pull rod, the lower pull rod, the horizontal support and the foot prop are respectively connected with the corresponding connecting sleeve I and connecting sleeve II through the quick connecting piece, so that disassembly, assembly and maintenance are more convenient.
[0065] The unmentioned part of the utility model is applicable to the prior art.
[0066] Obviously, the above embodiments are only examples for clearly illustrating, and do not limit the implementation modes. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the implementation modes need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.
Claims
1. A foldable portable shopping cart, comprising a pull rod (1), a load platform (2) and a walking wheel (3), the lower end of the pull rod (1) is fixedly connected with the upper end of the load platform (2), and the walking wheel (3) is installed at the bottom end of the load platform (2), characterized in that, The pull rod (1) comprises an upper pull rod (11), a lower pull rod (12) and a first folding assembly (4a) arranged between the upper pull rod (11) and the lower pull rod (12), and the folding angle of the upper pull rod (11) is controlled through the first folding assembly (4a); the load-bearing platform (2) comprises a wheel connector (21) and a horizontal support (22), the upper end surface of the wheel connector (21) is fixedly connected with the lower end of the lower pull rod (12), the two side surfaces of the wheel connector (21) are rotationally connected with the rotating shaft (31) penetrating through the walking wheel (3), one end of the horizontal support (22) is connected with the wheel connector (21) through a connecting shaft (23) penetrating through both, so that the horizontal support (22) is cantileveredly arranged on the wheel connector (21) to form a horizontal support; the horizontal support height of the horizontal support (22) is greater than the height of the walking wheel (3), and the horizontal support (22) can be upwardly rotated around the connecting shaft (23) to form a folded state.
2. The collapsible portable shopping cart of claim 1, wherein, The other end of the horizontal support (22) is further provided with a foot prop (24), and the upper end of the foot prop (24) forms a plurality of folding angles between the horizontal support (22) through a second folding assembly (4b), and the lower end of the foot prop (24) abuts against the ground.
3. The collapsible portable shopping cart of claim 2, wherein, A flat plate (25) is further arranged on the horizontal support (22), and the flat plate (25) is detachably clamped and fixed with the horizontal support (22).
4. The collapsible portable shopping cart of claim 2, wherein, A mud guard (32) is further arranged on the walking wheel (3), and the height of the mud guard (32) is lower than the height of the horizontal support (22) in the horizontal support state.
5. The collapsible portable shopping cart of any of claims 2-4, wherein, The first folding assembly (4a) and the second folding assembly (4b) each comprise a round rod locking shaft (41), a locking shaft (42), a folding connecting assembly (43) and an operation connecting assembly (44), the locking shaft (42) is in a plug-in manner arranged at both ends of the round rod locking shaft (41), the locking shaft (42) is a hollow shaft structure, and a radial through hole (a) for arranging a steel ball (5) is arranged on the locking shaft (42); The folding connecting assembly (43) comprises a connecting sleeve I (431) and a rotating sleeve (432), the connecting sleeve I (431) is perpendicularly connected with the rotating sleeve (432), the inner side surface of the rotating sleeve (432) forms a plurality of axially arranged separation teeth (4321), and the rotating sleeve (432) is sleeved on one end of the locking shaft (42) close to the round rod locking shaft (41); The operation connecting assembly (44) comprises a button shaft (441), a spring (442), a shaft sleeve (443) and a connecting sleeve II (444), the shaft sleeve (443) is in perpendicular fixed connection with the connecting sleeve II (444), a steel ball lifting surface (4411), a steel ball descending surface (4412), a spring mounting portion (4413) and a pressing portion (4414) are sequentially arranged along the button shaft (441) in sequence, an outer limiting ring (4415) is arranged between the spring mounting portion (4413) and the pressing portion (4414), the spring (442) is mounted in the spring mounting portion (4413) from one end of the steel ball lifting surface (4411), and one end of the spring (442) abuts against the outer limiting ring (4415), the button shaft (441) is arranged in the cavity of the locking shaft (42), the other end of the spring (442) abuts against the inner limiting ring (421) of the locking shaft (42), the shaft sleeve (443) is sleeved on the end of the locking shaft (42) away from the round rod lock shaft (41), and the two are fixedly connected through a connecting piece, the pressing portion (4414) is arranged in the shaft sleeve (443) and abuts against the inner side of the outer end surface of the shaft sleeve (443) under the action of the spring (442); Under the action of the spring (442), the steel ball (5) abuts against the steel ball lifting surface (4411), and the steel ball (5) is arranged in the groove between the two separation teeth (4321); when the pressing portion (4414) is manually pressed, the steel ball (5) slides to the steel ball descending surface (4412), so that the steel ball (5) is separated from the groove between the two separation teeth (4321).
6. The collapsible portable shopping cart of claim 5, wherein, The lower end of the upper pull rod (11) is inserted and fixed on the connecting sleeve I (431), the upper end of the lower pull rod (12) is inserted and fixed on the connecting sleeve II (444), and a plurality of folding angles are formed between the upper pull rod (11) and the lower pull rod (12) through the first folding assembly (4a).
7. The collapsible portable shopping cart of claim 5, wherein, The foot support (24) is a U-shaped support, the two ends of the foot support (24) are respectively inserted and fixed with the connecting sleeve I (431) at the two ends of the round rod lock shaft (41), the horizontal support (22) is respectively inserted and fixed with the connecting sleeve II (444) at the two ends of the round rod lock shaft (41), and a plurality of folding angles are formed between the foot support (24) and the horizontal support (22) through the second folding assembly (4b).
8. The collapsible portable shopping cart of claim 1, wherein, The wheel connector (21) is in the shape of a "U", and a plurality of spaced connecting shaft seats I (211) are arranged along the length direction of the lower end surface of the wheel connector (21), and a through hole I (211a) is arranged on the connecting shaft seat I (211); the end of the horizontal support (22) is provided with a plurality of spaced connecting shaft seats II (221) arranged along the length direction of the horizontal support (22), and a through hole II (221a) is arranged on the connecting shaft seat II (221); after the horizontal support (22) is connected with the wheel connector (21), the connecting shaft (23) is sequentially penetrated through the staggered through holes I (211a) and the through holes II (221a); when the horizontal support (22) is arranged in an unfolded manner, the upper end surface of the connecting shaft seat II (221) is clamped on the lower end surface of the wheel connector (21).