Rod locking mechanism and shopping cart

Abstract

The utility model belongs to the technical field of shopping carts, and relates to a pull rod locking mechanism and a shopping cart. It includes a pull rod body, the pull rod body has a hinged end, the hinged end is rotatably connected to the bottom of a storage box, a back plate is arranged on the side of the storage box facing the pull rod body, a pull rod groove is provided on the back plate along the length direction of the pull rod body, a locking part is protruded outward from the pull rod groove, the locking part has an upper edge, and a locking groove is provided in the middle of the upper edge; a locking sleeve is movably arranged on the pull rod body, the locking sleeve forms a locking fitting part on the side facing the back plate, the middle part of the locking fitting part protrudes downward to form a locking tongue that can be inserted into the locking groove, and the lock sleeve is moved to allow the lock tongue to be inserted into the locking groove so that the pull rod body is fixed on the back plate. After the lock tongue of the utility model is inserted into the locking groove, the left and right sides of the lock tongue will be restricted between the left and right side walls of the locking groove, which can avoid the lock sleeve from shaking significantly in the left and right directions and improve stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of shopping carts and relates to a pull rod locking mechanism and a shopping cart. Background Art

[0002] Shopping carts play a good role in transportation in people's daily shopping. Existing shopping carts usually include a box for accommodating items and a pull rod for pushing and pulling. In order to facilitate carrying, the box is usually made foldable and the pull rod is set to be retractable, such as a foldable shopping cart disclosed in the prior art CN110182249A.

[0003] Although the above-mentioned foldable shopping cart can solve the problem of being easy to carry, it still has the following shortcomings: the lower end of the pull rod is directly inserted into the installation groove set in the back plate of the box body, and the pull rod can only be extended and retracted in the length direction (similar to the pull rod structure of a suitcase), that is, the pull rod and the box body can only be in a parallel state. When the user uses it, the method of pushing and pulling the pull rod is relatively limited, and the pull rod cannot be rotated relative to the box body. In some situations with more complicated road conditions (such as uphill), if heavy items are carried, it will be more laborious. Summary of the invention

[0004] The utility model provides a pull rod locking mechanism and a shopping cart, wherein one end of a pull rod body is rotatably arranged on a storage box of the shopping cart, so that the pull rod body can be rotated relative to the storage box, which is convenient for users to use; and a locking sleeve is arranged on the pull rod body, so that it can be locked relative to the storage box, so as to ensure that the pull rod can be fixed with the storage box when not rotating.

[0005] The utility model adopts the following technical solutions:

[0006] The utility model provides a pull rod locking mechanism for locking the pull rod of a shopping cart on a storage box of the shopping cart, comprising a pull rod body, the pull rod body having a hinged end, the hinged end being rotatably connected to the bottom of the storage box, and having the following technical features: a back plate is provided on the side of the storage box facing the pull rod body, a pull rod groove is provided on the back plate along the length direction of the pull rod body, a locking portion is protruded outwardly from the pull rod groove, the locking portion has an upper edge, and a locking groove is provided in the middle of the upper edge; a locking sleeve is movably provided on the pull rod body, the locking sleeve forms a locking fitting portion facing one side of the back plate, the middle part of the locking fitting portion protrudes downward to form a locking tongue that can be extended into the locking groove, and the pull rod body is fixed to the back plate by moving the locking sleeve to allow the locking tongue to extend into the locking groove.

[0007] The pull rod locking mechanism provided by the utility model may also have the following technical features: the upper edge is located on both sides of the lock groove to form a blocking edge, and limiting edges are correspondingly arranged on both sides of the lock tongue, and the lock tongue protrudes from the limiting edge arrangement. When the lock tongue extends into the lock groove, the blocking edge can be fitted with the limiting edge.

[0008] The pull rod locking mechanism provided by the utility model may also have the following technical features: a limiting protrusion is protruded from the pull rod groove, a first guide surface is obliquely arranged on the upper part of the limiting protrusion, a baffle is formed on the side of the lock groove away from the storage box body, and when the lock tongue extends into the lock groove, the lock sleeve on the side where the lock tongue is located is limited between the baffle and the limiting protrusion.

[0009] The pull rod locking mechanism provided by the utility model may also have the following technical features: a limiting portion is provided on the side wall of the pull rod groove, and a limiting clamping strip which can extend into the limiting portion is provided on the side surface of the locking sleeve.

[0010] The pull rod locking mechanism provided by the utility model may also have the following technical features: the limiting portion has a limiting strip, a guide strip and a limiting notch located between the limiting strip and the guide strip, the limiting clamping strip extends into the limiting notch, the guide strip is aligned with the limiting protrusion, and has a second guide surface with the same inclination as the first guide surface.

[0011] The pull rod locking mechanism provided by the utility model may also have the following technical features: the lock sleeve also has a sleeve portion and a grip portion, the sleeve portion is provided with a through hole for the pull rod body to pass through, the grip portion and the locking matching portion are arranged opposite to each other, the length of the lock tongue along the length direction of the pull rod is greater than the length of the grip portion, and a slot for a human hand to be inserted is formed between the grip portion and the locking matching portion. The utility model also proposes a shopping cart, which has the following technical features: it includes a storage box, a pull rod and a locking mechanism, the pull rod is rotatably arranged on the storage box, and is locked with the storage box by the locking mechanism, wherein the locking mechanism is the pull rod locking mechanism as described above.

[0012] The shopping cart provided by the utility model may also have the following technical features: the storage box is a foldable box having a folded closed state and an unfolded open state for use, the foldable box comprising: the back panel, the front panel, which is arranged opposite to the back panel, a pair of foldable side panels, which are installed between the front panel and the back panel, a bottom panel, which is installed at the bottom of the front panel and the back panel, and a top panel, which is detachably fixed to the top of the front panel and the back panel, wherein the bottom of the front panel and the back panel are both provided with rollers, and both sides of the top panel protrude outward to form a force-applying portion protruding from the foldable side panels.

[0013] The shopping cart provided by the utility model may also have the following technical features: the foldable side panel includes a first panel and a second panel rotatably connected to the first panel at a vertical axis, wherein the first panel is also rotatably connected to the front panel, and the second panel is also rotatably connected to the back panel, and a slide rail is formed on the first panel, extending from the first panel across the vertical axis to the second panel, and a slider is slidably arranged on the slide rail.

[0014] The shopping cart provided by the utility model may also have the following technical features: the slide rail includes a first track segment located on the first panel and a second track segment located on the second panel, and the length of at least one of the first track segment and the second track segment is greater than or equal to the length of the slider.

[0015] Function and effect of utility model

[0016] According to the pull rod locking mechanism and shopping cart of the utility model, firstly, since the hinged end of the pull rod body is hinged to the bottom of the storage box, the pull rod body can be rotated relative to the storage box, which is convenient for users to push and pull the shopping cart at different angles. Secondly, a lock sleeve is also slidably provided on the pull rod body, and a locking portion is provided on the back plate of the storage box. A lock groove is provided in the middle of the upper edge of the locking portion, and the lock sleeve protrudes downward from the middle of one side of the back plate to form a lock tongue that can be inserted into the lock groove. When the pull rod body does not need to be rotated, just slide the lock sleeve and insert the lock tongue into the lock groove to keep the pull rod and the box fixed, thereby meeting the needs of different users' different usage habits. At the same time, after the lock tongue is inserted into the lock groove, the left and right sides of the lock tongue will be restricted between the left and right side walls of the lock groove, which can avoid the lock sleeve from shaking significantly in the left and right directions and improve stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a shopping cart of the present utility model.

[0018] Figure 2 It is a structural exploded view of the pull rod locking mechanism of the utility model.

[0019] Figure 3 yes Figure 2 AA section view.

[0020] Figure 4 It is an exploded view of the lock sleeve and the back plate structure of the utility model.

[0021] Figure 5 It is a schematic structural diagram of the lock sleeve of the utility model from the front view.

[0022] Figure 6It is a schematic structural diagram of the lock sleeve of the utility model from a reverse side perspective.

[0023] Figure 7 yes Figure 2 BB section view.

[0024] Figure 8 It is a structural schematic diagram of the folding box body of Example 2 of the utility model.

[0025] Fig. 9 It is a schematic structural diagram of the folding box body of Example 2 of the utility model after the top plate is removed.

[0026] Fig.10 It is a structural schematic diagram of the folding side panel of Example 2 of the utility model.

[0027] Reference numerals: storage box 1, pull rod 2, pull rod body 21, hinged end 22, movable end 23, hinge sleeve 24, rotating rod 25, locking mechanism 3, back plate 4, pull rod groove 41, convex portion 42, lock groove 43, baffle 431, blocking edge 432, limiting portion 44, limiting strip 441, guide strip 442, limiting notch 443, second guide surface 444, limiting protrusion 45, first guide surface 4 51, locking sleeve 5, locking tongue 51, limiting edge 511, limiting card strip 52, through hole 53, holding plate 54, arc-shaped outer protrusion 541, slot 55, locking matching portion 56, front plate 6, roller 61, folding side plate 7, vertical axis 70, first panel 71, second panel 72, slide rail 73, first track segment 731, second track segment 732, slider 74, bottom plate 8, top plate 9, force applying portion 91. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the pull rod locking mechanism and the shopping cart of the present invention are specifically described below in conjunction with the embodiments and drawings.

[0029] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present utility model can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed by the present utility model without affecting the effects and purposes that can be achieved by the present utility model.

[0030] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0031] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0032] <Example 1>

[0033] This embodiment provides a shopping cart, such as Figure 1 As shown, the shopping cart includes a storage box 1, a pull rod 2 and a locking mechanism 3, wherein the pull rod 2 is rotatably arranged on the storage box 1 and is locked with the storage box 1 through the locking mechanism 3, wherein the locking mechanism is a pull rod locking mechanism.

[0034] like Figure 2-Figure 6 As shown, the rod locking mechanism 3 includes a back plate 4 on the storage box 1, a rod body 21 of the rod 2 and a locking sleeve 5. In this embodiment, the rod 2 has a pair of symmetrically arranged rod bodies 21, each of which has a hinged end 22 and a movable end 23. The bottoms of the two hinged ends 22 are rotatably connected to the bottom of the back plate 4 through a hinge sleeve 24 and a rotating rod 25, respectively. The two movable ends 23 are connected through a cross bar 26, and the movable end 23 can rotate relative to the back plate 4 with the rotating rod 25 as an axis. Among them, the rod body 21 can be a telescopic rod.

[0035] A rod groove 41 is provided on one side of the back plate 4 facing the rod body 21 along the length direction of the rod body 21, and the rod body 21 can be reliably arranged in the rod groove 41. The middle part of the rod groove 41 protrudes toward the outside (i.e., the side where the rod is located) to form a locking portion, which is a convex portion 42. When the rod body 21 is arranged in the rod groove 41, the convex portion 42 is exactly located between the two rod bodies 21. The top of the convex portion 42 has an upper edge, and a locking groove 43 is provided in the middle of the upper edge. The locking sleeve 5 is movably provided on the movable end 23 of the rod body 21. The locking sleeve 5 forms a locking fitting portion 56 on the side facing the back plate 4. The middle part of the locking fitting portion 56 protrudes downward to form a locking tongue 51 that can be inserted into the locking groove 43. The locking sleeve 5 is moved to allow the locking tongue 51 to be inserted into the locking groove 43 so that the movable end 23 is fixed on the back plate 4. When the lock tongue 51 is inserted into the lock slot 43, the left and right sides of the lock tongue 51 will be restricted between the left and right side walls of the lock slot 43, which can prevent the lock sleeve 5 from shaking greatly in the left and right directions and the front and back directions, thereby forming left and right position limits for the lock sleeve 5 and improving stability. In addition, the lock tongue 51 is in a shape of being larger at the top and smaller at the bottom, which is convenient for insertion into the lock slot 43.

[0036] A baffle 431 is formed on one side (ie, the outer side) of the lock slot 43 away from the storage box 1. The baffle 431 is exposed to the lock sleeve 5. Figure 2 and Figure 3 As shown, the middle part of the outer side of the lock sleeve 5 is arched upward in an arc shape, and the horizontal plane where the highest point of the arc is located is obviously higher than the horizontal plane where the highest point of the baffle 431 is located, so that the entire baffle 431 can be exposed from the lock sleeve 5. The setting that the middle part of the outer side of the lock sleeve 5 is arched upward in an arc shape can expose the lock tongue 51 on the one hand, so that the user can insert the lock tongue 51 into the lock slot 43 more accurately when using it, and on the other hand, it is more beautiful in appearance.

[0037] The pull rod groove 41 is located obliquely above the convex portion 42 and further protrudes to form a limiting protrusion 45. The upper portion of the limiting protrusion 45 is obliquely provided with a first guide surface 451. Figure 3 and Figure 7 As shown, when the locking tongue 51 extends into the locking groove 43 , the locking sleeve (ie, the locking fitting portion 56 ) on the side where the locking tongue 51 is located is limited between the baffle 431 and the limiting protrusion 45 , thereby further limiting the front and rear positions of the locking sleeve 5 .

[0038] like Figure 4 and Figure 5As shown, the upper edge is located on both sides of the lock groove 43 to form a blocking edge 432, and the two sides of the lock tongue 51 are correspondingly provided with a limiting edge 511, and the lock tongue 51 protrudes downward from the limiting edge 511. When the lock tongue 51 extends into the lock groove 43, the blocking edge 432 can fit with the limiting edge 511. The blocking edge 432 and the limiting edge 511 can limit the movement of the lock tongue 51. When the lock sleeve 5 moves down to the blocking edge 432 and the limiting edge 511 fit, it can no longer move down, which also means that the lock tongue 51 has been completely extended into the lock groove 43 at this time, and the pull rod body 21 has been fixed.

[0039] In addition, in order to further enhance the stability of the lock sleeve 5 when it moves, a limiting portion 44 is provided on the side wall of the pull rod groove 41, and a limiting clamping strip 52 that can extend into the limiting portion 44 is provided on the side of the lock sleeve 5. Figure 4 As shown, the limiting portion 44 has a limiting strip 441, a guide strip 442, and a limiting notch 443 between the limiting strip 441 and the guide strip 442. The limiting clamping strip 52 extends into the limiting notch, and a second guide surface 444 is obliquely provided on the guide strip 442. The guide strip 442 is aligned with the limiting protrusion 45, and the second guide surface 444 has the same inclination as the first guide surface 451. The second guide surface 444 can guide the movement of the limiting clamping strip 52, so that the limiting clamping strip 52 can accurately move down along the limiting notch 443 during the movement process, and the first guide surface 451 guides the back side of the lock sleeve 51 (i.e., the locking matching portion 56), so that the lock tongue 51 can smoothly enter the lock groove 43.

[0040] like Figure 5 and Figure 6 As shown, the lock sleeve 5 further includes a sleeve portion and a grip portion 54. The grip portion 54 is arranged opposite to the locking matching portion. The sleeve portion is located at the left and right ends of the grip portion 54 and the locking matching portion. The sleeve portion is provided with a through hole 53 for the pull rod body 21 to pass through, and the sleeve portion is provided with the limit clamping strip 52 on the outside of the through hole 53 along the length direction of the pull rod body 21. The grip portion 54 and the locking matching portion are actually both a plate-like structure. The length of the lock tongue 51 along the length direction of the pull rod body 21 is greater than the length of the grip portion 54. A slot 55 for inserting a hand is formed between the grip portion 54 and the lock tongue 51. The bottom of the grip portion 54 also protrudes outward to form an arc-shaped outer protrusion 541, which is convenient for the user to insert his hand into the slot 55 from there, and then hold the grip portion 54 to apply force to move the lock sleeve 5.

[0041] like Figure 7As shown, when the lock tongue 51 of the lock sleeve 5 extends into the lock groove 43 and is in a locked state, one side of the lock tongue 51 is restricted between the baffle 431 and the limiting protrusion 45, and the limiting clip 52 is restricted between the limiting strip 441 and the guide strip 442, which greatly increases the contact area and the friction force, thereby enhancing the stability, so that when the lock sleeve 5 is in the locked state, it is firmly fixed on the lock groove 43, thereby improving the firmness of the fixation between the pull rod body 21 and the back plate 4.

[0042] <Example 2>

[0043] In this embodiment, based on the above-mentioned embodiment 1, the storage box 1 is a foldable box, which has a folded closed state and an unfolded open state. Figure 8 As shown, the folding box body 1 includes a front panel 6, a back panel 4, a pair of folding side panels 7, a bottom panel 8 and a top panel 9. The front panel 6 and the back panel 4 are arranged opposite to each other, one in front of the other. The pair of folding side panels 7 can be foldably arranged between the front panel 6 and the back panel 4, and are respectively located on the left and right sides. The bottom panel 8 can be detachably fixed to the bottom of the front panel 6 and the back panel 4, and the top panel 9 can be detachably fixed to the top of the front panel 6, the back panel 4 and the pair of folding side panels 7.

[0044] The bottom of the front plate 6 and the back plate 4 are both provided with rollers 61, and the two sides of the top plate 9 protrude outward to form force-applying parts 91 protruding from the folding side plates 7, so that the user can apply force to lift and open the top plate 9. The rollers 61 can be ordinary rollers, universal wheels, brake wheels with brakes, or ladder wheels with ladder climbing functions.

[0045] like Fig. 9 As shown, the folding side panel 7 includes a first panel 71 and a second panel 72 rotatably connected to the first panel 71 at a first vertical axis 70, wherein the side of the first panel 71 away from the first vertical axis 70 is also rotatably connected to the front panel 6, and the side of the second panel 72 away from the vertical axis 70 is also rotatably connected to the back panel 4. In the closed state, the second panel 72 of the first panel 71 can be folded inwardly so that the second panel 72 of the first panel 71 is stacked between the front panel 6 and the back panel 4.

[0046] In order to keep the storage box 1 in an open state for a long time and stably, a slide rail 73 is formed at the upper edge of the first panel 71 and extends from the first panel 71 across the vertical axis 70 to the upper edge of the second panel 72, and a slider 74 is slidably arranged on the slide rail 73.

[0047] The slide rail 73 includes a first track segment 731 located on the first panel 71 and a second track segment 732 located on the second panel 72. The length of at least one of the first track segment 731 and the second track segment 732 is greater than or equal to the length of the slider 74. When the slider 74 is in a position spanning the first track segment 731 and the second track segment 732, the storage box 1 can be kept in the open state (such as Fig. 9 When the slider 74 is completely on the track section longer than the slider length, that is, the slider 74 is only located on one of the panels (as shown); Fig.10 The foldable side panels 7 can be folded.

[0048] Furthermore, in order to ensure that the slider 74 is more stable in the open state, and also to allow the user to more clearly know to what extent the slider 74 can move to make the foldable side panel reach the open state, on the basis of the above, the length of one of the track segments can be set to be greater than or equal to the length of the slider 74, and the length of the other track segment can be set to be less than the length of the slider 74, such as Fig. 9 and Fig.10 As shown, the length of the second track segment 732 is less than the length of the slider 74 and is less than or equal to the length of the first track segment 731. In this way, when the slider 74 reaches the boundary of the second track segment 732, the slider 74 can be directly in a state of spanning the first panel 71 and the second panel 72.

[0049] like Fig. 9 As shown, one side of the bottom plate 8 is hinged to the bottom of the front plate 6, and the other side is snap-connected to the bottom of the back plate 4. In the closed state, the end of the bottom plate 8 connected to the back plate 4 can be removed and rotated to a state that is almost parallel to the front plate 6 for folding and storage. Figure 8 and Fig. 9 As shown, a buckle plate 75 is further provided in the middle of the connection between the foldable side plate 7 and the back plate 4 , and the foldable side plate 7 and the back plate 4 are tightly connected by the buckle plate 75 .

[0050] This embodiment adopts a foldable box body, so that the entire box body can be folded when the shopping cart is not in use, which is convenient for carrying and storage.

[0051] The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention. For example, in the above embodiments, the pull rod body 21 is a pair. In actual situations, only one pull rod body 21 can be provided. Correspondingly, the lock sleeve 5 is also adaptively adjusted, and the through hole for the pull rod body 21 to pass through is opened in the middle of the lock sleeve 5.

Claims

1. A pull rod locking mechanism, used to lock the pull rod of a shopping cart on a storage box of the shopping cart, comprising a pull rod body, wherein the pull rod body has a hinged end, and the hinged end is rotatably connected to the bottom of the storage box, characterized in that: The storage box is provided with a back plate on the side facing the pull rod body, and a pull rod groove is provided on the back plate along the length direction of the pull rod body, and a locking portion is formed by protruding outward from the pull rod groove, and the locking portion has an upper edge, and a locking groove is provided in the middle of the upper edge; A locking sleeve is movably provided on the pull rod body, and a locking fitting portion is formed on one side of the lock sleeve facing the back plate. The middle part of the locking fitting portion protrudes downward to form a locking tongue that can be inserted into the locking groove. The lock sleeve is moved to allow the locking tongue to be inserted into the locking groove so that the pull rod body is fixed on the back plate.

2. The pull rod locking mechanism according to claim 1, characterized in that: The upper edge is located on both sides of the lock groove to form blocking edges, and limiting edges are correspondingly arranged on both sides of the lock tongue. The lock tongue protrudes from the limiting edge arrangement. When the lock tongue extends into the lock groove, the blocking edge can be fitted with the limiting edge.

3. The pull rod locking mechanism according to claim 1 or 2, characterized in that: A limiting protrusion is also protruded on the pull rod groove, and a first guide surface is obliquely arranged on the upper part of the limiting protrusion. A baffle is formed on the side of the lock groove away from the storage box body. When the lock tongue extends into the lock groove, the lock sleeve on the side where the lock tongue is located is limited between the baffle and the limiting protrusion.

4. The pull rod locking mechanism according to claim 3, characterized in that: The side wall of the pull rod groove is provided with a limiting portion, and the side surface of the lock sleeve is provided with a limiting clamping strip which can extend into the limiting portion.

5. The pull rod locking mechanism according to claim 4, characterized in that: The limiting portion comprises a limiting strip, a guide strip and a limiting notch between the limiting strip and the guide strip, the limiting clamping strip extends into the limiting notch, the guide strip is aligned with the limiting protrusion and has a second guide surface with the same slope as the first guide surface.

6. The pull rod locking mechanism according to claim 1, characterized in that: The lock sleeve also has a sleeve portion and a grip portion, the sleeve portion is provided with a through hole for the pull rod body to pass through, the grip portion and the locking matching portion are arranged opposite to each other, the length of the lock tongue along the length direction of the pull rod is greater than the length of the grip portion, and a slot for a human hand to be inserted is formed between the grip portion and the locking matching portion.

7. Shopping cart, characterized by: It comprises a storage box, a pull rod and a locking mechanism, wherein the pull rod is rotatably arranged on the storage box and is locked with the storage box through the locking mechanism, wherein the locking mechanism is the pull rod locking mechanism according to any one of claims 1 to 6.

8. The shopping cart according to claim 7, characterized in that: The storage box is a foldable box having a folded closed state and an unfolded open state. The foldable box includes: The back plate, A front plate, arranged opposite to the back plate, A pair of foldable side panels, foldably disposed between the front panel and the back panel, A bottom plate, mounted on the bottom of the front plate and the back plate, and A top plate, mounted on top of the front plate and the back plate, Wherein, rollers are arranged at the bottom of the front plate and the back plate, and the two sides of the top plate protrude outward to form force-applying parts protruding from the folding side plates.

9. The shopping cart according to claim 8, characterized in that: The folding side panel comprises a first panel and a second panel rotatably connected to the first panel at a vertical axis, wherein the first panel is also rotatably connected to the front panel and the second panel is also rotatably connected to the back panel, A slide rail is formed on the first panel and extends from the first panel across the vertical axis to the second panel, and a slider is slidably arranged on the slide rail.

10. The shopping cart according to claim 9, characterized in that: The slide rail comprises a first track segment located on the first panel and a second track segment located on the second panel, and the length of at least one of the first track segment and the second track segment is greater than or equal to the length of the slider.

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