A multi-purpose folding cart

Abstract

The utility model discloses a multipurpose folding cart including a vehicle body frame, a seat assembly and a backrest assembly: the inside of vehicle body frame has a sitting space; seat assembly is arranged in the sitting space, and has first load bearing structure and the overleg passageway for the leg of the passenger to stretch out that bear the hip of the passenger; backrest assembly is movably connected with seat assembly or vehicle body frame, and can switch between the sitting mode and the lying mode through overturning relative to seat assembly. When in the sitting mode, the backrest assembly is vertically or obliquely arranged above the seat assembly, and together with the first load bearing structure forms a first sitting position; when in the lying mode, the backrest assembly covers the overleg passageway, and together with the seat assembly forms a load bearing surface for supporting the passenger lying. Through the overturning and switching of the backrest assembly, the cart can form a stable sitting position and also can be combined into a lying load bearing surface, filling the gap of the existing cart lying function, and solving the problem of easy sliding and poor comfort of the existing rideable cart.

Description

Technical Field

[0001] This utility model relates to the field of folding trolley technology, and in particular to a multi-purpose folding trolley. Background Technology

[0002] Folding strollers, as portable vehicles, are widely used in outdoor leisure, home assistance, and short-distance transportation. As user needs upgrade, users' requirements for the functions of folding strollers are no longer limited to a single purpose, but are increasingly inclined to multi-functional demands for multiple uses. They not only expect folding strollers to meet daily carrying needs, but also hope that they can be used for daily riding and provide stable and reliable lying support for the body when resting. However, current folding strollers on the market have many shortcomings in terms of functional design. Most folding strollers only focus on carrying cargo. Although people can try sitting on these strollers in actual use, the user experience is not good. Even the few products that do have a seating function have key flaws. For example, prior art with publication number CN222905558U discloses a folding stroller that allows sitting. It achieves seating by detachably installing a seat between two side support components, allowing the user to drive the stroller while seated. However, this seat is simply fixed to the top of the stroller, making it easy for the user to slip off. It also lacks a reclining function, failing to meet the user's need for body support during rest. Both comfort and safety are significantly lacking. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model discloses a multi-purpose folding trolley, including a frame, a seat assembly, and a backrest assembly. The frame has an internal seating space; the seat assembly is arranged within the seating space and has a first support structure for supporting the occupant's buttocks and a leg passage for the occupant's legs to extend; the backrest assembly is movably connected to the seat assembly or the frame and can be switched between a sitting and a reclining position by flipping relative to the seat assembly. In the sitting position, the backrest assembly is arranged vertically or obliquely above the seat assembly and forms a first seating position with the first support structure; in the reclining position, the backrest assembly covers the leg passage and combines with the seat assembly to form a support surface that supports the occupant while reclining.

[0004] Preferably, in the reclining position, the backrest assembly can partially or completely cover the leg passage.

[0005] Preferably, the seat assembly further includes a second support structure, wherein the first support structure and the second support structure are arranged opposite to each other in the seating space to jointly form the support surface of the seat assembly, and the gap between them forms the leg passage.

[0006] Preferably, it further includes a sliding connector, through which the backrest assembly is connected to the vehicle frame or the seat assembly; the sliding connector includes an annular kit and a hinge plate connected to the vehicle frame, the annular kit being slidably fitted onto the vehicle frame; the hinge plate is hinged to the annular kit and the backrest assembly respectively.

[0007] Preferably, the vehicle frame includes an upper support frame, a lower support frame, and four support tubes; the upper support frame integrates the seat assembly and has an opening inside that communicates with the leg passage to allow the user's legs to extend; the lower support frame is arranged below the upper support frame and forms a cargo space with the upper support frame and the four support tubes; the four support tubes are respectively connected to the four corners of the upper support frame and the four corners of the lower support frame.

[0008] Preferably, the upper support frame includes two upper supports, and the lower support frame includes two lower supports; the first support structure and the second support structure are respectively arranged on the two upper supports, and the two upper supports constitute the support surface of the upper support frame; the two lower supports together constitute the support surface of the loading space; the two upper supports are rotatably connected by a first folding structure, and the two lower supports are rotatably connected by a second folding structure, and the two upper supports and the two lower supports can rotate relative to their respective folding mechanisms, so that the upper support frame and the lower support frame can each switch to a folded state or an unfolded state.

[0009] Preferably, the vehicle frame further includes two side panel assemblies, which are arranged along the length of the vehicle frame, and at least a portion of them are higher than the seat assembly.

[0010] Preferably, it also includes a table panel, which is located above the seat assembly and is detachably connected to the side enclosure assembly.

[0011] Preferably, the side enclosure assembly includes two connectors for engaging with the table panel.

[0012] Preferably, the table panel has an open insertion part at its lower side, and the insertion part has a snap-fit ​​groove; the insertion part on the corresponding side of the side enclosure assembly has a protruding block that matches the snap-fit ​​groove; when the insertion part at the lower side of the table panel is inserted into the insertion part on the corresponding side of the side enclosure assembly, the protruding block is inserted into the opening of the snap-fit ​​groove and engages to fix it, and the table panel is fixed to the vehicle frame.

[0013] This utility model discloses a multi-purpose folding stroller comprising a frame, a seat assembly, and a backrest assembly. The frame has a seating space within it. The seat assembly, located within the seating space, includes a first support structure to support the passenger's buttocks and a leg passage for the passenger's legs. The backrest assembly is movably connected to the seat assembly or the frame and can be flipped relative to the seat assembly to switch between a sitting and reclining position. In the sitting position, the backrest assembly is vertically or inclined above the seat assembly, forming a first seating position together with the first support structure. In the reclining position, the backrest assembly covers the leg passage and, together with the seat assembly, forms a support surface for the passenger to lie down. By flipping the backrest assembly, the stroller can form both a stable seating position and a reclining support surface, filling the gap in existing strollers that lack reclining functionality and meeting the need for multiple uses. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0015] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0016] Figure 1 This is a schematic diagram of the structure of a trolley disclosed in one embodiment of this application.

[0017] Figure 2 A schematic diagram of the backrest assembly without folding is disclosed in one embodiment of this application.

[0018] Figure 3 A schematic diagram of the folding structure of the backrest assembly disclosed in one embodiment of this application.

[0019] Figure 4 This is a schematic diagram of the first and second folding structures disclosed in an embodiment of this application.

[0020] Figure 5 This is a schematic diagram of the sliding connector disclosed in this embodiment.

[0021] Figure 6 This is a structural schematic diagram of the side enclosure assembly disclosed in this embodiment.

[0022] Figure 7 This is a structural schematic diagram of the tabletop component disclosed in this embodiment.

[0023] Reference numerals: 1. Body frame; 2. Seat assembly; 3. Backrest assembly; 4. Table assembly; 11. Upper load-bearing frame; 12. Lower load-bearing frame; 14, 15. Side panel assemblies; 16. Sliding connector; 21. First load-bearing structure; 22. Leg passage; 23. Second load-bearing structure; 113. First folding structure; 123. Second folding structure; 143. Linkage telescopic rod; 161. Ring assembly; 162. Hinge plate; 411. Snap-fit ​​groove; 1131. Blocking groove; 1231. First connecting part. The following components are included: second connecting part 1232, sliding support rod 1411, rotating support rod 1412, protruding block 1441, hollow sleeve 1611, extension clamping part 1612, upper bracket 111, 112, fixing part 1132, 1133, lower bracket 121, 122, support tube 131, 132, 133, 134, X-shaped rod assembly 141, 142, plug-in part 144, 145, plug-in part 41, 42, seating space 100, and cargo space 200. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a limitation of quantity, but rather indicate the presence of at least one.

[0028] like Figure 1-3 As shown, as a first embodiment of this utility model, a multi-purpose folding trolley is provided, including a frame 1, a seat assembly 2, and a backrest assembly 3. The frame 1 has a seating space 100 inside; the seat assembly 2 is arranged within the seating space 100, having a first support structure 21 for supporting the buttocks of the passenger and a leg passage 22 for the passenger's legs to extend; the backrest assembly 3 is movably connected to the seat assembly 2 or the frame 1, and can switch between a sitting and reclining position by flipping relative to the seat assembly 2; in the sitting position, the backrest assembly 3 is arranged vertically or obliquely above the seat assembly 2, and forms a first seating position with the first support structure 21; in the reclining position, the backrest assembly 3 covers the leg passage 22 and combines with the seat assembly 2 to form a support surface supporting the passenger's reclining position. Through the coordinated operation of various components, compared to products that can only carry goods or simply add seats, on the one hand, the leg passage 22 provides space for the passenger to stretch their legs when sitting, avoiding the cramped feeling of legs being cramped when sitting. Combined with the support structure adapted to the buttocks and the backrest component 3 with adjustable angle, it greatly improves the stability and comfort when sitting. On the other hand, the flip function of the backrest component 3 allows the stroller to break through the limitation of a single form, allowing the stroller to switch between lying and reclining forms, meeting the needs of various scenarios such as outdoor rest and temporary reclining.

[0029] In this embodiment, in the reclining position, the backrest assembly 3 can partially or completely cover the leg passage 22. Specifically, the backrest assembly 3 is divided into left and right parts, each of which is movably connected to both sides of the seat assembly 2 or the main frame 1 and can cover a portion of the leg passage 22. The user can flexibly choose the usage method according to their needs. They can either lower only one side of the backrest to achieve partial coverage of the leg passage, adapting to partial support scenarios, or lower both sides of the backrest to completely cover the leg passage 22, thereby realizing the reclining function.

[0030] In this embodiment, the seat assembly 2 also includes a second support structure 23. The first support structure 21 and the second support structure 23 are arranged opposite to each other in the seating space, together forming the support surface of the seat assembly 2. The gap between them forms a leg passage 22. This dual support structure can accommodate the seating needs of two people at the same time, realizing the simultaneous seating of two people, breaking through the limitation of single-person seating of traditional folding strollers, and is more suitable for family travel, outdoor activities with companions and other multi-person scenarios. At the same time, the symmetrical arrangement of the structure can provide balanced bilateral support for the backrest assembly 3, avoiding tilting and shaking of the backrest assembly due to uneven force when switching to the reclining position, thus improving the stability of the backrest assembly during use.

[0031] In this embodiment, the vehicle frame 1 also includes an upper support frame 11, a lower support frame 12, and four support tubes 131, 132, 133, and 134. The upper support frame 11 integrates a seat assembly 2, which has an opening inside that connects to a leg passage 22 for the user to extend their legs. The lower support frame 12 is arranged below the upper support frame 11, forming a cargo space 200 with the upper support frame 11 and the four support tubes 131, 132, 133, and 134. The four support tubes 131, 132, 133, and 134 are respectively connected to the four corners of the upper support frame 11 and the four corners of the lower support frame 12. With these two support frames, the upper support frame 11 integrates a seat for passengers to rest, while the lower independent cargo space 200 can simultaneously hold luggage, outdoor equipment, and other items, achieving separation of people and goods and overcoming the limitation of traditional trolleys that are difficult to carry both people and goods.

[0032] In this embodiment, the upper support frame 11 further includes two upper supports 111 and 112, and the lower support frame includes two lower supports 121 and 122. A first support structure 21 is arranged on the upper support 111, a second support structure 23 is arranged on the upper support 112, and a leg passage 22 is arranged between the two upper supports 111 and 112. The two lower supports 121 and 122 together constitute the support surface of the cargo space 200. The two upper supports 111 and 112 are rotatably connected by a first folding structure 113, and the two lower supports 121 and 122 are rotatably connected by a second folding structure 123. The two upper supports 111 and 112 and the two lower supports 121 and 122 can rotate relative to their respective folding mechanisms, so that the upper support frame 11 and the lower support frame 12 can each switch to a folded state or an unfolded state, which ensures the core functions of riding and carrying cargo while also taking into account folding portability.

[0033] In this embodiment, the two upper supports 111 and 112 and the two lower supports 121 and 122 each have corresponding connecting pipes, which can be connected to their respective folding structures. Specifically, the connecting pipes of the two upper supports 111 and 112 are connected to the first folding structure 113, and the upper support frame 11 is folded by rotation; the connecting pipes of the two lower supports 121 and 122 are connected to the second folding structure 123, and the lower support frame 12 is folded by rotation.

[0034] like Figure 4 As shown, in this embodiment, the first folding structure 113 includes a blocking groove 1131 and two fixing members 1132 and 1133. The blocking groove 1131 has two symmetrically arranged arched limiting notches at its left and right ends, allowing the connecting tubes of the two upper supports to pass through and rotate to achieve folding. The fixing members 1132 and 1133 each have an L-shaped plate at their front and rear ends, which matches the front and rear baffles of the blocking groove 1131, and their left and right sides are also arched, matching the arched limiting notches of the blocking groove. The second folding structure 123 includes a first connecting part 1231 and a second connecting part 1232, both of which have symmetrically arranged notches on both sides, allowing the connecting tubes of the two lower supports to pass through. Simultaneously, the lower ends of both the first connecting part 1231 and the second connecting part 1232 extend outwards, and the extended portions are overlapped and hinged through through holes to form a fulcrum that can rotate relative to each other.

[0035] When the vehicle body needs to be folded, a rotational force is applied to the two upper supports 111 and 112 and the two lower supports 121 and 122 through the vehicle body frame 1, causing the upper supports 111 and 112, which are respectively arranged to pass through the connecting tubes of the first folding structure, to rotate along the arched limiting notch; the connecting tubes of the lower supports 121 and 122, which pass through the first and second connecting parts, drive the first and second connecting parts to rotate through the fulcrum at the lower end, thus completing the folding of the upper support frame 11 and the lower support frame 12.

[0036] like Figure 5 As shown, in this embodiment, the vehicle frame 1 also includes two side enclosure components 14 and 15. The two side enclosure components 14 and 15 are arranged along the length of the vehicle frame 1, and at least a portion of them are higher than the seat assembly 2. This effectively reduces the risk of the body tipping over or accidentally slipping when the passenger is sitting or lying on the seat assembly 2, while providing lateral support for the passenger, thereby improving the safety and stability of the overall riding process.

[0037] In this embodiment, the side enclosure assembly 14 includes two X-shaped rod groups 141 and 142 and a linkage telescopic rod 143. The X-shaped rod group 141 includes a sliding support rod 1411 and a rotating support rod 1412. The sliding support rod 1411 and the rotating support rod 1412 are cross-hinged, with one end connected to the vehicle frame 1 and the other end rotatably connected to the connectors 144 and 145 respectively, for connection with other support rods. The sliding support rod 1411 and the rotating support rod 1412 can rotate simultaneously around the connectors 144 and 145 and the vehicle frame 1 to achieve folding of the side enclosure assembly 14. The linkage telescopic rod 143 is fixed between the two connectors 144 and 145 and, when the side enclosure assembly 14 is folded, it extends and retracts in coordination with the folding action of the assembly to assist in the folding process.

[0038] like Figure 5 , Figure 6 As shown, in this embodiment, a sliding connector 16 is also included. The backrest assembly 3 is connected to the vehicle frame 1 or the seat assembly 2 through the sliding connector 16. The sliding connector 16 includes an annular sleeve 161 and a hinge plate 162 connected to the vehicle frame 1 or the seat assembly 2. The annular sleeve 161 is slidably fitted onto the vehicle frame 1. The hinge plate 162 is hinged to the annular sleeve 161 and the backrest assembly 3 respectively.

[0039] As shown in the figure, the annular assembly 161 includes a cylindrical hollow sleeve 1611, which is fitted onto the corresponding side support tube 131. The diameter of the hollow sleeve 1611 is adapted to the diameter of the support tube 131, and it can slide along the axial direction of the support tube 131. The hinge plate 162 is triangular in shape, and has multiple mounting holes for hinged connection with bracket-like components or with the annular assembly 161. When the sliding connector 16 slides along the corresponding side support tube 131, the angle adjustment or linkage between components can be achieved through the hinge plate 162, adapting to the position and movement requirements of the equipment in different working states, such as achieving precise displacement and angle coordination during folding and unfolding.

[0040] In this embodiment, the annular kit 161 also includes an extended clamping member 1612, which is integrally formed with the cylindrical hollow sleeve 1611 and hinged to the sliding support rod 1412, so as to realize the unified connection of the support tube 131, seat assembly 2, backrest assembly 3 and side enclosure assembly 14, and ensure that each core component forms a stable connection whole during assembly and use.

[0041] In this embodiment, a table panel 4 is also included. The table panel 4 is located above the seat assembly 2 and is detachably connected to the side enclosure assemblies 14 and 15. The table panel 4 adds a load-bearing surface to the trolley and can be used to place items or documents, serve as a temporary work surface or dining table, effectively expanding the storage and usage scenarios of the trolley. In this embodiment, the side enclosure assembly 14 includes a connector 144, which is used to engage with the table panel 4 to quickly achieve initial positioning of the side enclosure assembly 14 and the table panel 4, fixing the table panel 4 to the trolley.

[0042] like Figure 7 As shown, in this embodiment, the table panel 4 has an opening-shaped insertion part 41 and 42 below it, and the insertion part 41 has a snap-fit ​​groove 411; the corresponding side panel enclosure assembly 14 has a protruding block 1441 that matches the snap-fit ​​groove 411; when the insertion part 41 and the insertion part 144 are inserted, the protruding block 1441 is inserted into the opening of the snap-fit ​​groove 411 and snaps in place, so that the table panel 4 is fixed on the vehicle frame 1. At the same time, the shape of the insertion part 41 matches the insertion part 144, and the openings at its left and right ends allow the sliding support rod 1411 and the rotating support rod 1412 to pass through and rotate, thereby cooperating with the trolley to achieve a folding action.

[0043] In other embodiments, the insertion part 41 and the insertion piece 144 can be further fixed by fasteners such as bolts to limit the displacement of the table piece 4 in the horizontal and vertical directions, so as to prevent the table piece from loosening or shifting even if the vehicle body vibrates or bumps during movement.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

[0045] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A multi-purpose folding trolley, characterized in that, include: The vehicle has a frame structure and an interior space for passengers. The seat assembly, arranged within the seating space, has a first support structure for supporting the occupant's buttocks and a leg passage for the occupant's legs to extend out. The backrest assembly is movably connected to the seat assembly or the vehicle frame and can be switched between a sitting position and a reclining position by flipping relative to the seat assembly. In the seating configuration, the backrest assembly is arranged vertically or obliquely above the seat assembly and forms a first seating position together with the first supporting structure. In the reclining position, the backrest assembly covers the leg passage and combines with the seat assembly to form a support surface that supports the occupant's reclining position. The backrest assembly is divided into left and right parts, each of which is movably connected to the sides of the seat assembly or the main frame and can cover part of the leg passage in the lying position.

2. The multi-purpose folding trolley according to claim 1, characterized in that: In the reclining position, the backrest assembly can partially or completely cover the leg passage.

3. The multi-purpose folding trolley according to claim 1, characterized in that: The seat assembly also includes a second support structure. The first support structure and the second support structure are arranged opposite to each other in the seating space to jointly form the support surface of the seat assembly, and the gap between them forms the leg passage.

4. The multi-purpose folding trolley according to claim 3, characterized in that, It also includes a sliding connector, through which the backrest assembly is connected to the vehicle frame or the seat assembly; The sliding connector includes an annular kit and a hinge plate connected to the vehicle frame. The annular kit is slidably fitted onto the vehicle frame. The hinge plate is hinged to the annular kit and the backrest assembly, respectively.

5. The multi-purpose folding trolley according to claim 1, characterized in that, The vehicle frame includes an upper load-bearing frame, a lower load-bearing frame, and four support tubes; The upper support frame integrates the seat assembly and has an opening inside that communicates with the leg passage to allow the user's legs to extend. The lower support frame is arranged below the upper support frame, and together with the upper support frame and the four support tubes, they form a loading space. The four support tubes are respectively connected to the four corners of the upper load-bearing frame and the four corners of the lower load-bearing frame.

6. The multi-purpose folding trolley according to claim 5, characterized in that, The upper load-bearing frame includes two upper supports, and the lower load-bearing frame includes two lower supports. The first load-bearing structure and the second load-bearing structure are respectively arranged on two upper supports, and the two upper supports constitute the load-bearing surface of the upper load-bearing frame; The two lower supports together form the load-bearing surface of the loading space; The two upper supports are rotatably connected by a first folding structure, and the two lower supports are rotatably connected by a second folding structure. The two upper supports and the two lower supports can rotate relative to their respective folding mechanisms, so that the upper and lower load-bearing frames can switch to a folded state or an unfolded state.

7. The multi-purpose folding trolley according to claim 1, characterized in that, The vehicle frame also includes Two side panel assemblies are arranged along the length of the vehicle frame, and at least a portion of them are higher than the seat assembly.

8. The multi-purpose folding trolley according to claim 7, characterized in that, It also includes a table panel, which is located above the seat assembly and is detachably connected to the side enclosure assembly.

9. The multi-purpose folding trolley according to claim 8, characterized in that, The side enclosure assembly includes a connector for engaging with the table panel.

10. The multi-purpose folding trolley according to claim 9, characterized in that, The table panel is provided with an open insertion part at the bottom, and the insertion part is provided with a snap-fit ​​groove; the insertion part on the corresponding side of the side enclosure assembly is provided with a protruding block that matches the snap-fit ​​groove; when the insertion part under the table panel is inserted into the insertion part on the corresponding side of the side enclosure assembly, the protruding block is inserted into the opening of the snap-fit ​​groove and snaps in place, and the table panel is fixed on the vehicle frame.

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