Folding cart

Abstract

The invention discloses a folding cart. The folding cart comprises a middle plate, two supporting plates, an ejector block, a locking block and an elastic assembly, wherein the two supporting plates are rotationally connected to the two opposite sides of the middle plate respectively. The supporting plate is provided with a first locking surface; the locking block is provided with a second locking surface; the elastic assembly is used for pushing the locking block to be close to the top block so that the two second locking faces can abut against the two first locking faces on the same side to form a supporting face. When the top block is driven to be close to or away from the middle plate, the locking block moves in the direction away from the top block, so that the second locking face is separated from the first locking face, and the supporting plate can be rotationally folded relative to the middle plate. According to the structure, the operation steps are simplified, the folding and unfolding efficiency is improved, the overall rigidity and stability of the stroller in the unfolding state are remarkably enhanced through surface contact locking, and good practicability and user experience are achieved.

Description

Technical Field

[0001] This invention relates to the field of trolley technology, and more particularly to a folding trolley. Background Technology

[0002] Folding trolleys, as convenient storage and transportation tools, are widely used in daily shopping, outdoor activities, and logistics handling. Traditional folding trolleys typically use simple hinge structures to achieve their folding function, but their locking mechanisms often suffer from problems such as complex structures, inconvenient operation, or insufficient locking reliability. For example, some trolleys lack effective rigid locking in the unfolded state, resulting in poor stability when carrying loads; while other trolleys require multiple steps to fold, leading to a poor user experience.

[0003] Therefore, it is necessary to provide a folding stroller to overcome the above-mentioned shortcomings. Summary of the Invention

[0004] The purpose of this invention is to provide a folding stroller that improves the problems of poor stability when unfolded and complicated folding operation of existing folding strollers, thereby enhancing the user experience.

[0005] To achieve the above objectives, the present invention provides a folding trolley, comprising:

[0006] An intermediate plate and two support plates rotatably connected to opposite sides of the intermediate plate; each support plate has at least one first locking surface on the side closest to the intermediate plate;

[0007] Top block, the top block being disposed on the intermediate plate;

[0008] A locking block is slidably disposed on the intermediate plate; the locking block has a second locking surface at both ends along the width direction of the intermediate plate.

[0009] An elastic component is provided to push the locking block closer to the top block so that the two second locking surfaces abut against the two first locking surfaces on the same side, thereby forming a support surface together with the middle plate and the two support plates.

[0010] When the top block is driven by an external force to approach or move away from the middle plate, it drives the locking block to move away from the top block, thereby disengaging the second locking surface from the first locking surface, and thus enabling the support plate to rotate and fold relative to the middle plate.

[0011] In a preferred embodiment, a driving block is hinged to one end of the top block corresponding to the first locking surface, and the side of the driving block away from the top block is hinged to the locking block; when the top block approaches or moves away from the intermediate plate, the driving block is driven to unfold in a direction away from the top block, so that the locking block moves in a direction away from the top block.

[0012] In a preferred embodiment, at least one end of the top block along the length of the intermediate plate is a first inclined surface; the locking block has a second inclined surface adapted to the first inclined surface at one end near the top block; when the top block approaches or moves away from the intermediate plate, the first inclined surface presses against the second inclined surface, so that the locking block moves away from the top block.

[0013] In a preferred embodiment, at least one first spring is provided between the top block and the intermediate plate; the first spring is used to drive the top block so that the top block is reset to the position before being driven by an external force.

[0014] In a preferred embodiment, the locking block has at least one pulley on the side near the intermediate plate that abuts against the surface of the intermediate plate.

[0015] In a preferred embodiment, the intermediate plate is provided with a receiving groove for accommodating the top block, and the bottom of the receiving groove is provided with a guide post corresponding to the first spring, and the first spring is sleeved on the corresponding guide post; the top block is provided with a through hole corresponding to the guide post, and the guide post passes through the corresponding through hole.

[0016] In a preferred embodiment, the intermediate plate is fixed with a limiting plate, a portion of which is located on the side of the top block away from the intermediate plate, and a button hole is provided on the portion of the top block away from the intermediate plate; a button is fixed on the top block, and one end of the button extends out of the button hole.

[0017] In a preferred embodiment, the intermediate plate has a fixing block vertically disposed at one or both ends where the locking block is disposed; the elastic component includes a first fixing post vertically fixed to the surface of the locking block away from the top block, a second fixing post vertically fixed to the surface of the fixing block near the locking block, and a second spring with its two ends respectively sleeved on the first fixing post and the second fixing post; the second spring forces the locking block closer to the top block.

[0018] In a preferred embodiment, the middle plate has two parallel, spaced-apart strip-shaped lifting holes, and the receiving groove is located between the two strip-shaped lifting holes.

[0019] In a preferred embodiment, each of the support plates is connected to the intermediate plate via a pivot. The support plate has several first connecting cylinders on the side near the intermediate plate that are sleeved on the pivot. The intermediate plate has second connecting cylinders on both sides along its width that are respectively sleeved on the two pivots. The first connecting cylinders and the adjacent second connecting cylinders are staggered and located on the same straight line.

[0020] In a preferred embodiment, at least one section of the first connecting cylinder is connected to a first clamping block in the shape of a cuboid, the first clamping block being spaced apart from the first connecting cylinder to form a perforation; the second connecting cylinder is provided with a second clamping block in the shape of a cuboid and corresponding to the first clamping block; the second clamping block is perpendicular to the surface of the intermediate plate and passes through the perforation to form an interlocking structure with the corresponding first clamping block; when the support plate is unfolded to form a support surface with the intermediate plate, the first clamping block rotates to abut against the second clamping block side by side; when the support plate is folded to be perpendicular to the intermediate plate, the first clamping block rotates to be perpendicular to the second clamping block.

[0021] In a preferred embodiment, a plurality of parallel, spaced guide fins are provided between the second clamping block and the surface of the intermediate plate; the side of the guide fin away from the intermediate plate forms a first abutment surface parallel to the surface of the intermediate plate, and the side closer to the intermediate plate forms a second abutment surface perpendicular to the surface of the intermediate plate; when the first clamping block rotates to abut against the second clamping block side by side, the first clamping block is located on the first abutment surface; when the first clamping block rotates to abut against the second clamping block, the first clamping block is located on the second abutment surface; the edge of the guide fin between the first abutment surface and the second abutment surface is adapted to the rotation trajectory of the first clamping block.

[0022] In a preferred embodiment, a reinforcing sheet is connected between two second clamping blocks respectively disposed on both sides of the middle plate along the width direction.

[0023] In a preferred embodiment, each of the support plates is provided with at least one roller, and the total number of rollers is not less than three; when two of the support plates are folded, all the rollers are staggered.

[0024] In a preferred embodiment, each support plate has table legs hinged at its two apex corners away from the middle plate; a first connecting rod is hinged to the middle of each table leg, and a second connecting rod is hinged to the support plate on the side of each table leg near the middle plate; the side of the first connecting rod away from the table leg is hinged to the side of the second connecting rod away from the support plate; the first connecting rod has a first positioning hole and a second positioning hole; the first positioning hole and the second positioning hole are respectively spaced apart on both sides of the hinge position of the first connecting rod and the second connecting rod along the length direction of the first connecting rod; the second connecting rod has a positioning block; when the table leg rotates to be perpendicular to the surface of the support plate, the positioning block engages in the first positioning hole; when the table leg rotates to be in contact with the surface of the support plate, the positioning block engages in the second positioning hole.

[0025] Each of the support plates has insertion holes at its two apex corners away from the middle plate, and each insertion hole can be detachably inserted with a rod.

[0026] In a preferred embodiment, one of the support plates is rotatably connected to a handle at one end away from the intermediate plate. The handle includes multiple retractable rod sections. A handle is vertically provided at one end of the innermost rod section. The support plate has a folding groove for placing the fully retracted handle. The sidewall of the folding groove has a pair of elastic locking arms for holding the outermost rod section.

[0027] In a preferred embodiment, the folding trolley further includes at least one folding box; the opposite sides of the support plate are rotatably connected with first connecting buckles; the folding box is provided with a first connecting block corresponding to the first connecting buckle; the first connecting buckle can be rotated to engage with the corresponding first connecting block to fix the folding box on the support surface formed by the middle plate and the two support plates.

[0028] In a preferred embodiment, each of the folding boxes includes:

[0029] The base is rectangular and has the first connecting block on both opposite sides;

[0030] Two first box plates are rotatably connected to opposite sides of the base;

[0031] Two second box panels are rotatably connected to opposite sides of the base, and together with the two first box panels, they form the side of the folding box; each second box panel has a second connecting buckle rotatably connected to the side away from the base.

[0032] The cover plate assembly is rectangular when folded, and has second connecting blocks on opposite sides that are adapted to the second connecting buckle; the second connecting blocks are used to engage with the second connecting buckle so that the edges of the cover plate assembly can be respectively mounted on the side of the two first boxes and the two second boxes away from the base.

[0033] In a preferred embodiment, the first box panel has a plurality of hooks on the side near the second box panel, and the second box panel has a slot adapted to the hooks and at least one limiting elastic arm on the side near the first box panel. The limiting elastic arm includes a limiting surface perpendicular to the surface of the second box panel and a guide surface inclined to the surface of the second box panel. When the first box panel is rotated from folding to being perpendicular to the base, the edge of the first box panel presses against the guide surface until it abuts against the limiting surface. At this time, the hooks engage with the corresponding slots to splice the first box panel and the second box panel.

[0034] In a preferred embodiment, the cover plate assembly includes a rectangular fixed frame, a first desktop panel, and two parallel and spaced support rods; a second connecting block is disposed on the fixed frame; one end of each support rod is rotatably connected to the fixed frame, and the other end is rotatably connected to the side of the first desktop panel near the base; a rotation limiting block is also provided at a predetermined position of the fixed frame, the rotation limiting block being used to limit the maximum rotation stroke of the support rod, so as to lift and support the first desktop panel; when the support rod is folded to fit against the fixed frame, the first desktop panel is located within the fixed frame.

[0035] In a preferred embodiment, the cover plate assembly further includes a second desktop panel; the second desktop panel is connected to the first desktop panel via a hinge, so that the second desktop panel can be unfolded to form a desktop with the first desktop panel, or the second desktop panel can be folded onto the first desktop panel; the first desktop panel is provided with a telescopic tube on the side near the base, and a support bracket is inserted through the telescopic tube; the support bracket is used to extend along the telescopic tube under the unfolded second desktop panel to support the second desktop panel.

[0036] In a preferred embodiment, the cover plate assembly further includes a second desktop panel; the second desktop panel is connected to the first desktop panel via a hinge, so that the second desktop panel can be unfolded to form a desktop with the first desktop panel, or the second desktop panel can be folded onto the first desktop panel; the fixing frame is rotatably provided with at least one support bar; the support bar is used to rotate to a maximum preset angle so that the end of the support bar away from the fixing frame supports the second desktop panel.

[0037] In a preferred embodiment, at least one of the first box panels has a door frame in the middle, and a door panel is rotatably connected to the door frame; the door panel is provided with a sliding lock piece, and the door frame has a lock groove adapted to the sliding lock piece; the sliding lock piece is used to insert into the corresponding lock groove to lock the door panel inside the door frame.

[0038] In a preferred embodiment, at least one of the second box panels is provided with a storage basket on its outer side; the storage basket includes two inner side panels hinged to the second box panel, two outer side panels respectively hinged to one end of the two inner side panels away from the second box panel, a front panel hinged to one end of the two outer side panels away from the inner side panels, and a bottom plate rotatably connected to the second box panel; at least one of the inner side panels is provided with a baffle at its bottom, the baffle being used to support the bottom plate so that the bottom plate is placed horizontally and to close the bottom opening of the rectangular frame formed by the two inner side panels, the two outer side panels, and the front panel.

[0039] The folding trolley provided by this invention achieves fast and reliable locking and releasing by setting an inclined drive mechanism in the middle plate where a top block and a locking block cooperate. Specifically, when the top block is pressed, it pushes the locking block to move away from the top block, thereby releasing the lock on the support plate and allowing the trolley to fold. After the top block is released, the elastic component pushes the locking block back to its original position, re-engaging with the first locking surface on the support plate to achieve rigid locking. This structure not only simplifies the operation steps and improves the efficiency of folding and unfolding, but also significantly enhances the overall rigidity and stability of the trolley in the unfolded state through surface contact locking, providing excellent practicality and user experience. Attached Figure Description

[0040] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 A perspective view of the folding trolley provided by the present invention when used as a trolley and equipped with a folding box.

[0042] Figure 2 A perspective view of the folding trolley provided by the present invention when used as a desktop;

[0043] Figure 3 A perspective view of the folding trolley provided by the present invention when folded;

[0044] Figure 4 for Figure 1A three-dimensional view of the back of the support surface of the folding trolley shown;

[0045] Figure 5 for Figure 4 A perspective view of an exemplary implementation of the folding cart shown;

[0046] Figure 6 for Figure 4 A perspective view of another exemplary implementation of the folding cart shown;

[0047] Figure 7 for Figure 6 The folding trolley shown is a 3D exploded view with some parts obscured.

[0048] Figure 8 for Figure 7 An exploded 3D view of the folding trolley from another angle;

[0049] Figure 9 This is a sectional perspective view of the middle plate along the centerline.

[0050] Figure 10 A perspective view of another implementation of the folding trolley provided by the present invention when used as a desktop;

[0051] Figure 11 A perspective view of the unfolded folding box provided by the present invention;

[0052] Figure 12 for Figure 11 A perspective view of the second desktop panel being supported in one exemplary implementation of the folding box shown.

[0053] Figure 13 for Figure 11 A perspective view of the second desktop panel being supported in another exemplary implementation of the folding box shown;

[0054] Figure 14 A perspective view of the folding box with the desktop panel hidden, provided by the present invention;

[0055] Figure 15 An exploded 3D view of the folding box with some structural elements hidden.

[0056] 100. Folding trolley; 101. Support surface; 102. Reinforcing plate; 103. Receiving groove; 104. Strip-shaped lifting hole; 110. Middle plate; 111. Second connecting cylinder; 112. Second clamping block; 113. Guide fin; 1131. First abutting surface; 1132. Second abutting surface; 114. Fixing block; 115. Limiting plate; 1151. Button hole; 120. Support plate; 121. Rotating shaft; 122. First connecting cylinder; 123. First clamping block; 124. Roller; 1241. Locking mechanism; 125. First locking surface; 126. First connecting buckle; 127. Insertion hole; 128. Insert rod; 130. 131. Top block; 132. First inclined surface; 133. First spring; 134. Guide post; 135. Through hole; 136. Button; 137. Drive block; 140. Locking block; 141. Second inclined surface; 142. Second locking surface; 143. Pulley; 150. Elastic component; 151. First fixed post; 152. Second fixed post; 153. Second spring; 160. Table leg; 161. First connecting rod; 1611. First positioning hole; 1612. Second positioning hole; 162. Second connecting rod; 1621. Positioning block; 170. Handle rod; 171. Rod section; 172. Handle; 173. Folding groove; 174. Elastic locking arm;

[0057] 200. Folding box; 201. First connecting block; 210. First box panel; 211. Door frame; 212. Door panel; 213. Sliding lock plate; 214. Hook; 220. Second box panel; 221. Storage basket; 2211. Inner side panel; 2212. Outer side panel; 2213. Front panel; 2214. Bottom plate; 2215. Stop bar; 222. Slot; 223. Limiting elastic arm; 2231. Limiting surface; 2232. Guide surface; 224. Second connecting buckle; 230. Base; 240. Cover plate assembly; 241. Second connecting block; 242. Fixing frame; 243. First desktop panel; 244. Support rod; 245. Rotation limiting block; 246. Second desktop panel; 247. Hinge; 248. Telescopic tube; 249. Support bracket; 250. Support strip. Detailed Implementation

[0058] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are merely for explaining the invention and are not intended to limit the invention.

[0059] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0060] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0061] In an embodiment of the present invention, a folding trolley 100 is provided, which can be used as a trolley when unfolded (e.g., Figure 1 As shown), or used as a small table (such as...). Figure 2 or Figure 10 As shown), it can be folded when not in use (as shown). Figure 3 (As shown), it is easy to store and carry.

[0062] like Figures 1-15 As shown, the folding trolley 100 includes: a middle plate 110 and two support plates 120, a top block 130, a locking block 140, and an elastic component 150 respectively rotatably connected to opposite sides of the middle plate 110.

[0063] The two support plates 120 can be rectangular or semi-circular, and are parallel and spaced apart on one side of each other. These two parallel lines can be defined as the connection lines between the support plates 120 and the intermediate plate 110. The intermediate plate 110 is a rectangular strip, and its length direction is defined as parallel to the connection line, its width direction is perpendicular to both connection lines, and its thickness direction is the vertical direction when the trolley is used on the ground.

[0064] Each support plate 120 can rotate at least 90° relative to the middle plate 110. In use, both support plates 120 are unfolded until they are on the same plane as the middle plate 110; this plane is the support surface 101. This support surface 101 can hold various items such as camping boxes. When folding, each support plate 120 is rotated to be perpendicular to the middle plate 110. At this point, the two support plates 120 are parallel, reducing their maximum length by half, thus facilitating carrying and storage. It should be noted that to enhance the support strength of the support plates 120 and the middle plate 110, a reinforcing rib mesh structure is provided at their respective bottoms.

[0065] Specifically, each support plate 120 is connected to the intermediate plate 110 via a pivot 121, for example, a steel shaft is used as the pivot 121 for rotational connection to enhance the connection strength. The support plate 120 has several first connecting cylinders 122 on the side closest to the intermediate plate 110, which are sleeved on the pivot 121. The first connecting cylinders 122 can be integrally injection molded with the support plate 120 itself. The intermediate plate 110 has second connecting cylinders 111 on both sides along its width direction, which are respectively sleeved on two pivots 121. The second connecting cylinders 111 can be integrally injection molded with the intermediate plate 110. The first connecting cylinders 122 and adjacent second connecting cylinders 111 have the same radius, and they are staggered and located on the same straight line to improve the stability of the rotational connection.

[0066] Furthermore, such as Figures 4-9 As shown, at least one first connecting cylinder 122 is connected to a first clamping block 123 in the shape of a cuboid. The two ends of the first clamping block 123 are connected to the corresponding first connecting cylinder 122 via connectors, thus being spaced apart from the first connecting cylinder 122 to form through holes. The second connecting cylinder 111 is provided with a second clamping block 112 in the shape of a cuboid and corresponding to each of the first clamping blocks 123. In this embodiment, there are two first clamping blocks 123 and two corresponding second clamping blocks 112 on the same first connecting cylinder 122, both located below the support surface 101. The second clamping block 112 is perpendicular to the surface of the intermediate plate 110 and passes through the through hole, thus forming an interlocking structure with the corresponding first clamping block 123. The working principle of the interlocking structure is as follows: when the support plate 120 is unfolded to form a support surface 101 with the intermediate plate 110, the first clamping block 123 rotates to abut against the second clamping block 112 side by side, so as to limit the maximum stroke of the support plate 120 in this direction and enhance the rigidity when unfolded; when the support plate 120 is folded to be perpendicular to the intermediate plate 110, the first clamping block 123 rotates in the opposite direction to be perpendicular to the second clamping block 112 and abuts against the surface of the intermediate plate 110, so as to limit the maximum stroke of the support plate 120 in this direction.

[0067] Furthermore, a plurality of parallel, spaced guide fins 113 are provided between the second clamping block 112 and the surface of the intermediate plate 110. Two sides of each guide fin 113 are fixedly connected to the surfaces of the second clamping block 112 and the intermediate plate 110, forming a right-angle structure. On the outer side away from this right-angle structure, the side of the guide fin 113 furthest from the intermediate plate 110 forms a first abutment surface 1131 parallel to the surface of the intermediate plate 110, and the side closer to the intermediate plate 110 forms a second abutment surface 1132 perpendicular to the surface of the intermediate plate 110. When the first clamping block 123 rotates to abut against the second clamping block 112 side-by-side, the first clamping block 123 is located on the first abutment surface 1131; when the first clamping block 123 rotates to abut against the second clamping block 112, the first clamping block 123 is located on the second abutment surface 1132, ensuring sufficient contact between the first clamping block 123 and the guide fins 113 and improving the stability of the connection. Accordingly, the edge of the guide fin 113 between the first abutment surface 1131 and the second abutment surface 1132 is adapted to the rotation trajectory of the first clamping block 123, so that the guide fin 113 can also provide support for the first clamping block 123 during rotation. Furthermore, a reinforcing piece 102 is connected between the two second clamping blocks 112 respectively disposed on both sides of the intermediate plate 110 along the width direction to improve the rigid connection strength of the two second clamping blocks 112.

[0068] In some embodiments, each support plate 120 is provided with at least one rolling wheel 124, and the total number of rolling wheels 124 is not less than three, which can be configured as a three-wheeled cart, a four-wheeled cart, a six-wheeled cart, etc., as needed. When two support plates 120 are folded, all the rolling wheels 124 are staggered, that is, the rolling wheels 124 will not collide with each other during folding, so as not to affect the folding effect. Among them, the rolling wheels 124 can be provided with a locking mechanism 1241. When it is necessary to prevent the cart from moving on its own, the locking mechanism 1241 can be locked. The specific structure and implementation principle of the locking mechanism 1241 can refer to the prior art, and will not be described in detail here.

[0069] In an embodiment of the present invention, each support plate 120 has at least one first locking surface 125 on the side near the intermediate plate 110. In the figures, each support plate 120 has two first locking surfaces 125. The first locking surfaces 125 are arranged along the thickness direction of the intermediate plate 110.

[0070] The top block 130 may be elongated and disposed on the middle plate 110. The top block 130 is used to drive the locking block 140 to move away from the top block 130 by changing its own position.

[0071] In the first exemplary implementation, combined with Figure 5 and Figure 6As shown, a driving block 136 is hinged to one end of the top block 130 corresponding to the first locking surface 125. The side of the driving block 136 away from the top block 130 is hinged to the locking block 140. When the top block 130 approaches or moves away from the intermediate plate 110, it forces the driving block 136 to unfold in a direction away from the top block 130, so that the locking block 140 moves in a direction away from the top block 130. Specifically, the connection between the driving block 136 and the top block 130 forms an angle. When the top block 130 approaches or moves away from the intermediate plate 110, the angle of this angle increases, thereby increasing the distance between the top block 130 and the locking block 140. Since the top block 130 is restricted from moving along the length direction of the intermediate plate 110, the locking block 140 can only be forced to move outward to accommodate the movement of the top block 130.

[0072] Furthermore, such as Figure 5 As shown, the locking block 140 is provided with at least one pulley 143 on the side near the intermediate plate 110 that abuts against the surface of the intermediate plate 110. When the locking block 140 slides relative to the surface of the intermediate plate 110, the pulley 143 can effectively reduce the frictional resistance between the locking block 140 and the intermediate plate 110.

[0073] Combination Figures 6-8 As shown, in the second exemplary implementation, at least one end of the top block along the length of the intermediate plate 110 is a first inclined surface 131, that is, one first inclined surface 131 corresponds to one locking block 140. In this embodiment, in order to enhance the stability and strength of the locking function, both ends of the top block 130 are provided with first inclined surfaces 131. The intermediate plate 110 has a long strip-shaped receiving groove 103 along its length in the middle for accommodating the top block 130. Further, the intermediate plate 110 has two parallel and spaced strip-shaped lifting holes 104 in the middle, and the receiving groove 103 is located between the two strip-shaped lifting holes 104 to optimize the overall space. The area between the two strip-shaped lifting holes 104 forms a handle for easy lifting, allowing the user to grip the handle to lift the folded trolley.

[0074] The locking block 140 is slidably disposed on the bottom side of the intermediate plate 110, and a second inclined surface 141 adapted to the first inclined surface 131 is provided at one end near the top block 130. It should be noted that the vertical position relationship between the first inclined surface 131 and the second inclined surface 141 can be set according to the position of the top block 130. When the first inclined surface 131 presses against the second inclined surface 141, the locking block 140 will move outward. The locking block 140 has a second locking surface 142 at both ends along the width direction of the intermediate plate 110, and the shape and size of the second locking surface 142 are adapted to the shape and size of the first locking surface 125. The two second locking surfaces 142 on both sides of the locking block 140 can prevent the two first locking surfaces 125 from approaching each other during contact, thereby preventing the two support plates 120 from flipping inward.

[0075] In this embodiment, the elastic component 150 is used to push the locking block 140 closer to the top block 130, so that the two second locking surfaces 142 respectively abut against the two first locking surfaces 125 on the same side and maintain this state, thereby forming a support surface 101 together with the intermediate plate 110 and the two support plates 120. The intermediate plate 110 has a fixing block 114 vertically provided at one or both ends where the locking block 140 is located. That is, the fixing block 114 is paired with the locking block 140. Specifically, the elastic component 150 includes a first fixing post 151 vertically fixed to the surface of the locking block 140 away from the top block 130, a second fixing post 152 vertically fixed to the surface of the fixing block 114 near the locking block 140, and a second spring 153 with its two ends respectively sleeved on the first fixing post 151 and the second fixing post 152. The second spring 153 forces the locking block 140 to move inward closer to the top block 130, thereby maintaining the state in which the two second locking surfaces 142 respectively abut against the two first locking surfaces 125 on the same side. It should be noted that the inward movement of the locking block 140 can be limited by the outermost guide fin 113, preventing the locking block 140 from continuing to move under the push of the second spring 153, causing the second locking surfaces 142 to disengage from the first locking surfaces 125 on the inner side. Alternatively, other limiting structures can be provided on the intermediate plate 110 to limit the inward movement of the locking block 140.

[0076] Therefore, when the top block 130 is driven close to (when used with a trolley, the first inclined surface 131 is below the second inclined surface 141, at which point the top block 130 is pushed towards the middle plate 110) or away from (when used with a trolley, the first inclined surface 131 is above the second inclined surface 141, at which point the top block 130 is pulled away from the middle plate 110) the middle plate 110, the first inclined surface 131 presses against the second inclined surface 141 and moves the second inclined surface 141 outward, so that the locking block 140 moves away from the top block 130, thereby causing the second locking surface 142 to disengage from the first locking surface 125, releasing the rotational locking effect of the locking block 140 on the two support plates 120, and thus allowing the support plates 120 to rotate and fold relative to the middle plate 110.

[0077] In one implementation, taking "the structure where the first inclined surface 131 is below the second inclined surface 141 when the trolley is in use" as an example, the interaction principle between the top block 130 and the locking block 140 will be specifically explained with reference to the accompanying drawings. Specifically, at least one first spring 132 is provided between the top block 130 and the intermediate plate 110. The first spring 132 is used to drive the top block 130, so that the top block 130 returns to its original position after the applied pressure is removed, and moves the first inclined surface 131 away from the second inclined surface 141, thereby releasing the pressing effect of the top block 130 on the locking block 140. At this time, the locking block 140 maintains its locking effect on the support plate 120 under the action of the second spring 153.

[0078] Furthermore, combined Figure 7 and Figure 9 As shown, the bottom of the receiving groove 103 is provided with a guide post 133 corresponding to the first spring 132, and the first spring 132 is sleeved on the corresponding guide post 133. In this embodiment, there are two guide posts 133 and their corresponding first springs 132. Correspondingly, the top block 130 is provided with a through hole 134 corresponding to the guide post 133, and the guide post 133 passes through the corresponding through hole 134. At this time, the two ends of the first spring 132 abut against the bottom of the receiving groove 103 and the surface of the top block 130, respectively. At this time, the through hole 134 is the clearance hole structure when the top block 130 moves up and down relative to the guide post 133.

[0079] The intermediate plate 110 is fixed with a limiting plate 115. The limiting plate 115 can be an I-beam to enhance the overall structural strength. A portion of the limiting plate 115 is located on the side of the top block 130 away from the intermediate plate 110, i.e., below the top block 130, and a button hole 1151 is formed on the portion of the top block 130 away from the intermediate plate 110. A button 135 is fixed to the top block 130, one end of which protrudes from the button hole 1151 and is not dislodged from the button hole 1151 by a protrusion structure. Therefore, when it is necessary to bring the top block 130 closer to the intermediate plate 110, the button 135 can be pressed. In addition, the limiting plate 115 can also limit the maximum travel of the top block 130 away from the intermediate plate 110, so as to confine the top block 130 within the receiving groove 103.

[0080] In one exemplary embodiment, combined with Figure 2 and Figure 3As shown, each support plate 120 has table legs 160 hinged at its two apex corners away from the middle plate 110. Therefore, the two support plates 120 together form four table legs 160. When used as a trolley or folded, the four table legs 160 fold under the support plates 120. When the four table legs 160 are unfolded, they, together with the support surface 101, form a usable table. Specifically, a first connecting rod 161 is hinged to the middle of each table leg 160, and a second connecting rod 162 is hinged to the side of each table leg 160 near the middle plate 110, so that the table legs 160 can be completely fitted against the bottom side of the support plate 120 when folded and stored. The side of the first connecting rod 161 away from the table leg 160 is hinged to the side of the second connecting rod 162 away from the support plate 120. The first connecting rod 161 has a first positioning hole 1611 and a second positioning hole 1612. The first positioning hole 1611 and the second positioning hole 1612 are respectively spaced apart on both sides of the hinge position of the first connecting rod 161 and the second connecting rod 162 along the length direction of the first connecting rod 161, so that the first positioning hole 1611, the hinge position, and the second positioning hole 1612 are sequentially located on the same straight line. Correspondingly, the second connecting rod 162 is provided with a positioning block 1621 that matches the above two positioning holes. The top of the positioning block 1621 can be arc-shaped or inclined, which can be easily inserted into either of the above positioning holes to provide a certain damping effect. When the table leg 160 rotates to be perpendicular to the surface of the support plate 120, the positioning block 1621 is inserted into the first positioning hole 1611 to prevent the first connecting rod 161 and the second connecting rod 162 from rotating easily. When the table leg 160 rotates to fit the surface of the support plate 120, the positioning block 1621 is engaged in the second positioning hole 1612, preventing the first connecting rod 161 and the second connecting rod 162 from rotating easily, thereby preventing the table leg 160 from wobbling easily.

[0081] In another exemplary embodiment, combined with Figure 10 As shown, each support plate 120 has insertion holes 127 at its two top corners away from the middle plate 110, and each insertion hole 127 can be detachably inserted with a rod 128. When the support plate 120 is folded, the rods 128 are removed; when unfolded for use as a tabletop, the four rods 128 are inserted into the four insertion holes 127 respectively, so that the rods 128 serve as the support structure for the tabletop.

[0082] In some embodiments, a handle 170 is rotatably connected to one end of the support plate 120 away from the intermediate plate 110. When used as a trolley, the trolley can be pulled and its direction of movement controlled by pulling the handle 170. Specifically, the handle 170 includes multiple sequentially retractable rod sections 171, which can be folded into a small section when stored. A handle 172 is vertically provided at one end of the innermost rod section 171, forming a T-shaped structure for easy gripping by the human hand. The bottom of the support plate 120 is provided with a folding groove 173 for placing the fully retracted handle 170. The sidewall of the folding groove 173 is provided with a pair of elastic locking arms 174, which are used to hold the outermost rod section 171 to prevent the retracted handle 170 from disengaging from the folding groove 173.

[0083] In some embodiments, in conjunction with the above-described multiple implementations, the folding cart 100 further includes at least one folding case 200. A first connecting buckle 126 is rotatably connected to opposite sides of the support plate 120. The folding case 200 is provided with a first connecting block 201 corresponding to the first connecting buckle 126. The first connecting buckle 126 can rotate to engage with the corresponding first connecting block 201, thereby fixing the folding case 200 to the support surface 101 formed by the intermediate plate 110 and the two support plates 120. That is, when used as a cart, at least one folding case 200 can also be placed on the support surface 101. This folding case 200 can be used as a camping box or similar device, thereby facilitating the transfer of items placed inside the folding case 200 and preventing items from easily falling out during transfer.

[0084] Specifically, such as Figures 11-15 As shown, each folding box 200 includes: two first box panels 210, two second box panels 220, a base 230, and a cover assembly 240.

[0085] The base 230 is rectangular and forms the bottom of the folding case 200, with first connecting blocks 201 on both opposite sides. The entire folding case 200 is fixed by fixing the base 230 to the support surface 101. Two first box panels 210 and two second box panels 220, forming the sides of the folding case 200, are connected to the base 230.

[0086] Two first box plates 210 are rotatably connected to opposite sides of the base 230. When the height of the first box plate 210 relative to the base 230 is greater than half the width of the base 230, the hinge positions of the two first box plates 210 and the base 230 are at different heights. Therefore, when folded, the two first box plates 210 are stacked on the base 230, and the same applies to the second box plate 220.

[0087] Furthermore, at least one first box panel 210 has a door frame 211 in the middle, and a door panel 212 is rotatably connected to the door frame 211. The door panel 212 has a sliding lock plate 213, and the door frame 211 has a lock groove (not shown in the figure) adapted to the sliding lock plate 213. The sliding lock plate 213 is inserted into the corresponding lock groove to lock the door panel 212 inside the door frame 211. When it is necessary to open the door panel 212 to take or take items from the unfolded box, the sliding lock plate 213 can be moved to disengage from the lock groove, releasing the locking effect on the door panel 212.

[0088] Two second box panels 220 are rotatably connected to opposite sides of the base 230, and together with the two first box panels 210, they form the side of the folding box 200. Further, at least one second box panel 220 has a storage basket 221 on its outer side. Specifically, the storage basket 221 includes two inner side panels 2211 hinged to the second box panel 220, two outer side panels 2212 hinged to the two inner side panels 2211 at the ends away from the second box panel 220, a front panel 2213 hinged to the ends of the two outer side panels 2212 at the ends away from the inner side panels 2211, and a bottom plate 2214 rotatably connected to the second box panel 220. The two outer side panels 2212, the two inner side panels 2211, and the front panel 2213 together form the side of the storage basket 221. The bottom plate 2214 forms the bottom surface of the storage basket 221. The top of the storage basket 221 is open for easy access to items. At least one inner side panel 2211 has a stop strip 2215 at its bottom. The stop strip 2215 supports the bottom panel 2214, allowing the bottom panel 2214 to be placed horizontally and preventing it from rotating downwards. The bottom panel 2214 closes the bottom opening of the rectangular frame formed by the two inner side panels 2211, the two outer side panels 2212, and the front panel 2213. When the storage basket 221 needs to be folded, the hinge position of the inner side panel 2211 and the outer side panel 2212 is moved inward, so that the inner side panel 2211 and the outer side panel 2212 are folded together. Then, the front panel 2213 presses the folded inner side panel 2211 and the outer side panel 2212 onto the second box panel 220.

[0089] Furthermore, the first panel 210 has a plurality of hooks 214 on the side near the second panel 220, and the second panel 220 has a slot 222 adapted to the hooks 214 and at least one limiting elastic arm 223 on the side near the first panel 210. The limiting elastic arm 223 includes a limiting surface 2231 perpendicular to the surface of the second panel 220 and a guide surface 2232 inclined to the surface of the second panel 220. When the first panel 210 rotates from its folded position to be perpendicular to the base 230, the edge of the first panel 210 presses against the guide surface 2232. During this process, the pressing of the guide surface 2232 causes the limiting elastic arm 223 to retract until the first panel 210 disengages from the guide surface 2232. The limiting elastic arm 223 then springs back, causing the limiting surface 2231 to abut against the first panel 210. At this point, the hook 214 engages with the corresponding slot 222 to join the first panel 210 and the second panel 220 into a right-angle structure. The engagement of the hook 214 and the slot 222 restricts the first panel 210 from rotating further in one direction; the limiting action of the limiting surface 2231 on the first panel 210 restricts the first panel 210 from rotating further in the opposite direction, thereby maintaining the right-angle structure between the first panel 210 and the second panel 220.

[0090] In an embodiment of the present invention, each second box plate 220 is rotatably connected to a second connecting buckle 224 on the side away from the base 230.

[0091] The cover assembly 240 is rectangular when folded, and has second connecting blocks 241 on opposite sides that are adapted to the second connecting buckle 224. The second connecting blocks 241 are used to engage with the second connecting buckle 224 so that the edges of the cover assembly 240 can be respectively mounted on the side of the two first box plates 210 and the two second box plates 220 away from the base 230, thereby fixing the cover assembly 240 to the top side of the folding box 200.

[0092] Specifically, the cover assembly 240 includes a rectangular fixing frame 242, a first desktop panel 243, and two parallel and spaced support rods 244. A second connecting block 241 is disposed on the fixing frame 242. One end of each support rod 244 is rotatably connected to the fixing frame 242, and the other end is rotatably connected to the side of the first desktop panel 243 near the base 230. A rotation limiting block 245 is also provided at a predetermined position on the fixing frame 242. The rotation limiting block 245 is used to limit the maximum rotation stroke of the support rod 244 to lift, support, and fix the first desktop panel 243. At this time, the support rod 244 is in an inclined state, and the first desktop panel 243 can be used as a small desktop. When the support rod 244 is folded in the opposite direction to fit against the fixing frame 242, the first desktop panel 243 is inside the fixing frame 242, thereby folding the cover assembly 240 and reducing the storage space.

[0093] Furthermore, the cover assembly 240 also includes a second desktop panel 246. The second desktop panel 246 is connected to the first desktop panel 243 via a hinge 247, so that the second desktop panel 246 can be unfolded to form a larger desktop with the first desktop panel 243, or the second desktop panel 246 can be folded onto the first desktop panel 243.

[0094] In the first implementation method, such as Figure 12 As shown, a telescopic tube 248 is provided on the side of the first desktop panel 243 near the base 230, and a T-shaped support bracket 249 is inserted inside the telescopic tube 248. The support bracket 249 is used to extend along the telescopic tube 248 under the unfolded second desktop panel 246 to support the second desktop panel 246 and thus prevent the second desktop panel 246 from rotating downward.

[0095] In the second implementation, such as Figure 13 As shown, at least one support bar 250 is rotatably provided at a predetermined position of the fixed frame 242. When the support bar 250 rotates to the maximum preset angle, the support bar 250 tilts outward in the direction away from the first desktop panel 243, so that the end of the support bar 250 away from the fixed frame 242 can support the second desktop panel 246.

[0096] In summary, the folding trolley 100 provided by this invention achieves fast and reliable locking and releasing by setting a ramp drive mechanism in the middle plate 110, in which a top block 130 and a locking block 140 cooperate. Specifically, when the top block 130 is pressed or pulled up, it pushes the locking block to move, causing the locking block 140 to move away from the top block 130, thereby releasing the lock on the support plate 120 and making the trolley foldable; after the top block 130 is released, the elastic component 150 pushes the locking block 140 to reset, and it abuts against the first locking surface 125 on the support plate 120 again, achieving rigid locking. This structure not only simplifies the operation steps and improves the efficiency of folding and unfolding, but also significantly enhances the overall rigidity and stability of the trolley in the unfolded state through surface contact locking, providing good practicality and user experience.

[0097] The present invention is not limited to the description in the specification and embodiments, and thus other advantages and modifications can be readily realized by those skilled in the art. Therefore, the present invention is not limited to the specific details, representative devices and illustrated examples shown and described herein without departing from the spirit and scope of the general concept as defined by the claims and their equivalents.

Claims

1. A folding stroller, characterized in that, The utility model provides a folding support, which comprises: an intermediate plate and two support plates rotatably connected to opposite sides of the intermediate plate; each of the support plates is provided with at least one first locking surface on a side close to the intermediate plate; a top block provided on the intermediate plate; a locking block slidingly provided on the intermediate plate, the locking block being provided with a second locking surface at each end along the width direction of the intermediate plate; an elastic assembly for pushing the locking block to be close to the top block, so that the two second locking surfaces are respectively abutted against two first locking surfaces on the same side, thereby forming a support surface together with the intermediate plate and the two support plates; when the top block is driven by an external force to be close to or away from the intermediate plate, the locking block is driven to move away from the top block, so that the second locking surface is separated from the first locking surface, and the support plate can be folded relative to the intermediate plate.

2. The folding stroller of claim 1, wherein, one end of the top block corresponding to the first locking surface is hingedly connected with a driving block, the side of the driving block away from the top block is hingedly connected to the locking block; when the top block is close to or away from the intermediate plate, the driving block is driven to expand away from the top block, so that the locking block moves away from the top block.

3. The folding stroller of claim 1, wherein, at least one end of the top block along the length direction of the intermediate plate is a first inclined surface; one end of the locking block close to the top block is provided with a second inclined surface matched with the first inclined surface; when the top block is close to or away from the intermediate plate, the first inclined surface is pressed against the second inclined surface, so that the locking block moves away from the top block.

4. The foldable stroller of claim 1, wherein, at least one first spring is arranged between the top block and the intermediate plate; the first spring is used to drive the top block to reset to a position before being driven by an external force.

5. The folding stroller of claim 1, wherein, one side of the locking block close to the intermediate plate is provided with at least one pulley abutting against the surface of the intermediate plate.

6. The foldable stroller of claim 4, wherein, the intermediate plate is provided with a receiving groove for accommodating the top block, the bottom of the receiving groove is provided with a guide column corresponding to the first spring, and the first spring is sleeved on the corresponding guide column; the top block is provided with a through hole corresponding to the guide column, and the guide column is arranged in the corresponding through hole.

7. The folding stroller of claim 6, wherein, the intermediate plate is fixed with a limiting plate, part of the limiting plate is located on the side of the top block away from the intermediate plate, and the part of the limiting plate on the side of the top block away from the intermediate plate is provided with a button hole; the top block is fixed with a button, one end of the button extends out of the button hole.

8. The foldable stroller of claim 1, wherein, the intermediate plate is vertically provided with a fixed block at one end or both ends provided with the locking block; the elastic assembly comprises a first fixed column vertically fixed to the surface of the locking block away from the top block, a second fixed column vertically fixed to the surface of the fixed block close to the locking block, and a second spring having two ends sleeved on the first fixed column and the second fixed column; the second spring forces the locking block to be close to the top block.

9. The folding stroller of claim 6, wherein, the intermediate plate is provided with two parallel and spaced strip-shaped pull holes in the middle, and the receiving groove is located between the two strip-shaped pull holes.

10. The foldable stroller of claim 1, wherein, Each of the support plates is connected with the intermediate plate through a rotating shaft, and a plurality of first connecting tubes are arranged on the side of each of the support plates close to the intermediate plate and sleeved on the rotating shafts; the intermediate plate is provided with second connecting tubes on both sides along the width direction and sleeved on the rotating shafts respectively; the first connecting tubes and the second connecting tubes close to the first connecting tubes are arranged alternately and on the same straight line.

11. The folding stroller of claim 10, wherein, At least one of the first connecting tubes is connected with a first clamping block in the shape of a cuboid, the first clamping block is arranged spaced apart from the first connecting tube to form a through hole; the second connecting tube is provided with a second clamping block in the shape of a cuboid and corresponding to the first clamping block; the second clamping block is perpendicular to the surface of the intermediate plate and passes through the through hole to form a mutual clamping structure with the corresponding first clamping block; when the support plate is unfolded to form a support surface with the intermediate plate, the first clamping block is rotated to abut against the second clamping block side by side; when the support plate is folded to be perpendicular to the intermediate plate, the first clamping block is rotated to be perpendicular to the second clamping block.

12. The folding stroller of claim 11, wherein, A plurality of guide fins are arranged spaced apart and parallel between the second clamping block and the surface of the intermediate plate; the side of the guide fin away from the intermediate plate forms a first abutting surface parallel to the surface of the intermediate plate, and the side close to the intermediate plate forms a second abutting surface perpendicular to the surface of the intermediate plate; when the first clamping block is rotated to abut against the second clamping block side by side, the first clamping block is located on the first abutting surface; when the first clamping block is rotated to be perpendicular to the second clamping block, the first clamping block is located on the second abutting surface; the edge of the guide fin between the first abutting surface and the second abutting surface is adapted to the rotation track of the first clamping block.

13. The folding stroller of claim 11, wherein, A reinforcing sheet is connected between the two second clamping blocks corresponding to the two sides along the width direction of the intermediate plate respectively.

14. The foldable stroller of claim 1, wherein, Each of the support plates is provided with at least one rolling wheel, and the total number of the rolling wheels is not less than three; when two of the support plates are folded, all the rolling wheels are arranged staggered.

15. The folding stroller of claim 1, wherein, A table leg is hinged at each of the two top corners of each of the support plates away from the intermediate plate; a first connecting rod is hinged at the middle of each of the table legs, and a second connecting rod is hinged at the side of each of the support plates close to the intermediate plate; the side of the first connecting rod away from the table leg is hinged with the side of the second connecting rod away from the support plate; the first connecting rod is provided with a first positioning hole and a second positioning hole; the first positioning hole and the second positioning hole are arranged spaced apart along the length direction of the first connecting rod on both sides of the hinged position of the first connecting rod and the second connecting rod respectively; the second connecting rod is provided with a positioning block; when the table leg is rotated to be perpendicular to the surface of the support plate, the positioning block is clamped into the first positioning hole; when the table leg is rotated to be attached to the surface of the support plate, the positioning block is clamped into the second positioning hole.

16. The foldable stroller of claim 1, wherein, An insertion hole is formed at each of the two top corners of each of the support plates away from the intermediate plate, and one insertion rod is detachably inserted into each of the insertion holes.

17. The foldable stroller of claim 1, wherein, One of the support plates is rotatably connected with a handle rod at one end away from the middle plate, the handle rod comprises a plurality of rod segments which can be sequentially retracted; a handle is vertically arranged at one end of the innermost rod segment; the support plate is provided with a folding groove for placing the handle rod after complete retraction, the side wall of the folding groove is provided with a pair of elastic clamping arms for holding the outermost rod segment.

18. The foldable stroller of claim 1, wherein, Further comprising at least one folding box; the opposite sides of the support plate are rotatably connected with first connecting buckles; the folding box is provided with first connecting blocks corresponding to the first connecting buckles; the first connecting buckles can be rotated to be buckled with the corresponding first connecting blocks to fix the folding box on the support surface formed by the middle plate and the two support plates.

19. The foldable stroller of claim 18, wherein, Each folding box comprises: a base, which is rectangular and provided with the first connecting blocks on the opposite sides; two first box plates, which are rotatably connected to the opposite sides of the base; two second box plates, which are rotatably connected to the opposite sides of the base and jointly surround the side surface of the folding box with the two first box plates; each second box plate is rotatably connected with a second connecting buckle at one side away from the base; a cover plate assembly, which is rectangular when folded and provided with second connecting blocks on the opposite sides which are adapted to the second connecting buckles; the second connecting blocks are used to be buckled with the second connecting buckles so that the edges of the cover plate assembly can be respectively arranged on one side of the two first box plates and the two second box plates away from the base.

20. The foldable stroller of claim 19, wherein, The side of the first box plate close to the second box plate is provided with a plurality of clamping hooks, the side of the second box plate close to the first box plate is provided with clamping grooves and at least one limiting elastic arm which is adapted to the clamping hooks; the limiting elastic arm comprises a limiting surface which is perpendicular to the surface of the second box plate and a guide surface which is inclined to the surface of the second box plate; when the first box plate is rotated from folding to being perpendicular to the base, the edge of the first box plate is pressed against the guide surface until abutting against the limiting surface, at this time the clamping hooks are clamped into the corresponding clamping grooves to splice the first box plate and the second box plate.

21. The foldable stroller of claim 19, wherein, The cover plate assembly comprises a rectangular fixed frame, a first table top plate and two parallel and spaced support rods; the second connecting blocks are arranged on the fixed frame; one end of each support rod is rotatably connected to the fixed frame and the other end is rotatably connected to the side of the first table top plate close to the base; the predetermined position of the fixed frame is further provided with a rotating limiting block for limiting the maximum rotating stroke of the support rod to lift and support the first table top plate; when the support rod is folded to be close to the fixed frame, the first table top plate is in the fixed frame.

22. The folding stroller of claim 21, wherein, The cover plate assembly further comprises a second tabletop; the second tabletop is connected to the first tabletop through a hinge, so that the second tabletop can be unfolded to form a tabletop together with the first tabletop, or the second tabletop can be folded on the first tabletop; a telescopic pipe is arranged on one side of the first tabletop close to the base; a supporting bracket is arranged in the telescopic pipe; the supporting bracket is used to extend into the unfolded second tabletop to support the second tabletop.

23. The folding stroller of claim 21, wherein, The cover plate assembly further comprises a second tabletop; the second tabletop is connected to the first tabletop through a hinge, so that the second tabletop can be unfolded to form a tabletop together with the first tabletop, or the second tabletop can be folded on the first tabletop; the fixed frame is rotationally provided with at least one supporting strip; the supporting strip is used to rotate to a maximum preset angle, so that an end of the supporting strip away from the fixed frame supports the second tabletop.

24. The foldable stroller of claim 19, wherein, At least one of the first box plates is provided with a door frame, and a door plate is rotationally connected to the door frame; the door plate is provided with a translation lock piece, and the door frame is provided with a lock groove matched with the translation lock piece; the translation lock piece is used to be inserted into the corresponding lock groove, so as to lock the door plate in the door frame.

25. The foldable stroller of claim 19, wherein, The outer side of at least one of the second box plates is provided with a storage basket; the storage basket comprises two inner side plates hinged to the second box plate, two outer side plates respectively hinged to one end of the two inner side plates away from the second box plate, a front plate hinged to one end of the two outer side plates away from the inner side plates, and a bottom plate rotationally connected to the second box plate; the bottom of at least one of the inner side plates is provided with a stop bar for receiving the bottom plate, so that the bottom plate is horizontally placed and closes the bottom opening of the rectangular frame formed by the two inner side plates, the two outer side plates and the front plate.

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