Deformable multipurpose cart

Abstract

The deformable multipurpose cart comprises a folding cart frame, the folding cart frame comprises a chassis, a push handle rod and a supporting frame, wheels are installed on the chassis, and a bearing space is formed in the chassis; the push handle rod is hinged to the chassis and has a vertical posture and a horizontal posture relative to the chassis; the supporting frame is hinged to the chassis and has a drooping posture and an upward swinging posture; the folding frame has a first unfolding state and a second unfolding state, in the first unfolding state, the supporting frame is in a drooping posture so that one side of the bearing space can be opened, and the push handle rod is in a vertical posture for supporting; in the second unfolding state, the push handle rod is in a horizontal posture, the supporting frame is in an upward swinging posture, the push handle rod and the supporting frame are located on the two opposite sides of the folding frame respectively and define an annular frame, the annular frame is located at the top of the chassis to limit the top edge of the bearing space, and the folding frame can be switched to the corresponding unfolding state according to user requirements; therefore, the stroller is switched to a baby carriage or trailer form.

Description

Technical Field

[0001] This application relates to the field of children's products technology, specifically a transformable multi-purpose stroller. Background Technology

[0002] Current strollers are relatively simple in function, mostly only designed to carry infants and toddlers. With the increase in outdoor activities, some children prefer to ride in trailers when outdoors, and vehicles are needed to carry cargo during outdoor activities. Therefore, the functional requirements of vehicles have expanded, but having both a stroller and a trailer takes up valuable storage space. Utility Model Content

[0003] This application provides a transformable multi-purpose stroller that can switch between different unfolding states to meet the needs of carrying children or loading goods.

[0004] This application provides a deformable multi-purpose cart, including a folding frame, the folding frame comprising:

[0005] A chassis, equipped with wheels, and having a load-bearing space within the chassis;

[0006] The push handle is hinged to the chassis and has an upright and a horizontal orientation relative to the chassis.

[0007] The support frame is hinged to the chassis and has a drooping posture and an upward swing posture.

[0008] The folding frame has;

[0009] In the first unfolded state, the support frame is in a drooping posture, opening one side of the bearing space, and the push handle is in an upright posture for support.

[0010] In the second unfolded state, the push handle is in a flat position, the support frame is in an upward swing position, the push handle and the support frame are respectively located on two opposite sides of the folding frame and form an annular frame, which is located on the top of the chassis to define the top edge of the load-bearing space.

[0011] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0012] Optionally, the chassis includes two opposing side frames, and a detachable first crossbar connects the two side frames, wherein:

[0013] In the first deployed state, the first crossbar is in place;

[0014] In the second unfolded state, the first crossbar is removed to make way for the load-bearing space;

[0015] The folding frame also includes a trailing bar that is detachably connected to the chassis.

[0016] Optionally, each of the two sides of the frame is provided with an adapter slot on the opposite side, and the two ends of the crossbar are respectively engaged with the corresponding adapter slot.

[0017] Optionally, each of the side frames includes a first support member and a second support member, the top of the first support member and the second support member are hinged by a joint structure, and the wheels are respectively installed at the bottom of the two support members.

[0018] When the folding frame switches between different unfolded states, the first support member and the second support member remain relatively fixed.

[0019] Optionally, the support frame is in contact with the first support member when in a drooping posture;

[0020] A second locking mechanism is provided between the support frame and the chassis to maintain its own posture.

[0021] Optionally, the folding frame further includes:

[0022] A slide block is slidably mounted on the push handle along the extension direction of the push handle, and a locking mechanism is provided between the slide block and the push handle to restrict the sliding of the slide block;

[0023] The connecting rod is hinged at one end to the second support member and at the other end to the slide block, and moves with the slide block to adapt to the changing posture of the push rod.

[0024] Optionally, both the push handle and the support frame are U-shaped, and the two ends of the opening are respectively hinged to the joint structure on the corresponding side;

[0025] A locking mechanism is provided between the chassis and the support frame to restrict the support frame to an upward swing posture.

[0026] Optionally, the first support member, the second support member, and the push rod are rotatably connected by a joint structure;

[0027] The folding frame also has a folded state, in which the first support member, the second support member, and the push rod rotate around the joint structure and move closer to each other.

[0028] Optionally, the deformable multi-purpose cart may also include a seat detachably attached to the folding frame.

[0029] Optionally, the deformable multi-purpose cart further includes a bib, the bib comprising:

[0030] The first part consists of the components in their unfolded states, located directly below and on the left and right sides of the chassis.

[0031] The second part is located on the front side of the support frame in the first unfolded state to open the front side of the load-bearing space, and in the second unfolded state, it is located on the front side of the chassis.

[0032] The third part is located on the rear side of the chassis or the rear side of the seat in the first unfolded state, and is located on the rear side of the chassis in the second unfolded state.

[0033] This application discloses a deformable multi-purpose stroller. In its first unfolded state, the folding frame has a push handle in an upright position for pushing, and the stroller is used as a baby stroller. In its second unfolded state, the stroller has a large carrying space and can be used as a trailer. The carrying space can carry children or load goods, making it convenient to switch the corresponding unfolded state according to actual needs in daily life, improving utilization and reducing the occupation of storage space. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the deformable multi-purpose stroller in stroller form according to an embodiment of this application;

[0035] Figure 2 This is a structural view of a folding frame in a second unfolded state according to an embodiment of this application;

[0036] Figure 3 This is a front view of a deformable multi-purpose trolley in trailer mode according to an embodiment of this application;

[0037] Figure 4 for Figure 1 Enlarged view of section A in the middle;

[0038] Figure 5 This is a structural view of a deformable multi-purpose stroller according to an embodiment of the present application, in stroller form with a seat and bib installed;

[0039] Figure 6 for Figure 5 Structural view of a transformable multi-purpose trolley that can be switched to trailer mode and has a tow bar installed;

[0040] Figure 7 This is a structural view of a folding frame in a folded state according to an embodiment of this application;

[0041] Figure 8 This is a structural view of a folding frame with a first crossbar and a second crossbar installed according to an embodiment of this application.

[0042] The annotations in the figure are explained as follows:

[0043] 1000, stroller; 100, folding frame;

[0044] 200. Chassis; 201. Side frame; 202. Slot; 210. First support member; 220. Second support member; 230. First crossbar; 241. Front wheel; 242. Rear wheel; 250. Connecting rod; 260. Second crossbar; 270. Joint structure;

[0045] 300, push handle; 400, support frame;

[0046] 600. Seat; 610. Seat section; 620. Backrest; 630. Leg rest;

[0047] 700. Bib; 710. Part One; 720. Part Two; 730. Part Three;

[0048] 800, tow bar. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0052] In this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number or order of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] See Figures 1-6This application provides a deformable multi-purpose trolley (hereinafter referred to as trolley 1000), which includes a folding frame 100. The front side of the trolley 1000 is the direction of travel, and the opposite rear side, in the horizontal plane, is the width direction perpendicular to the front and rear directions.

[0054] The folding frame 100 includes a chassis 200, a push bar 300, and a support frame 400. The chassis 200 is equipped with wheels. The chassis 200 is a frame structure with load-bearing space on its inner side.

[0055] The push rod 300 is hinged to the chassis 200 and has an upright posture and a flat posture relative to the chassis 200. The flat posture means that the push rod 300 is roughly in the horizontal plane, and the upright posture means that the push rod 300 is tilted after swinging up relative to the flat posture. The push rod 300 extends to the rear in both the upright posture and the flat posture.

[0056] The support frame 400 is hinged to the chassis 200 and has a drooping posture and an upward swing posture. The upward swing posture includes, but is not limited to, the support frame 400 being roughly in the horizontal plane, or it can be significantly above the horizontal plane; the drooping posture is that the support frame 400 is tilted downward relative to the upward swing posture, wherein the support frame 400 extends forward in both the drooping posture and the upward swing posture.

[0057] The folding frame 100 has a first unfolded state (e.g.) Figure 1 ) and the second unfolded state (such as Figure 2 ), respectively corresponding to the stroller type of stroller 1000 (such as Figure 5 ) and trailer configuration (such as Figure 6 ).

[0058] In its first unfolded state, the folding frame 100 has the support frame 400 drooping downwards, opening one side of the carrying space, and the push handle 300 upright for support. As illustrated, the stroller 1000 also includes a seat 600 mounted on the folding frame 100. The seat 600 is for infants and includes a seat 610, a backrest 620, and a leg rest 630. The leg rest 630 is tilted forward and downwards, and the support frame 400 droops downwards to avoid the leg rest 630. The seat 600 and the folding frame 100 are detachably connected, for example, by binding with webbing or at least one of the following methods. For ease of understanding... Figure 1 The seat 600 and bib 700 are indicated by dashed lines.

[0059] The trolley 1000 also includes a bib 700 mounted on the folding frame 100. The bib 700 includes a first part 710, a second part 720 and a third part 730. In each unfolded state, the first part 710 is unfolded and is at least directly below the chassis 200 and on the left and right sides. The interior of the first part 710 serves as a carrying space, and its rear side can be opened for taking out and putting in goods.

[0060] In the first unfolded state, the second part 720 adapts to the drooping posture of the support frame 400 to open the front side of the load-bearing space, that is, to release the front space to avoid the leg rest 630. In the second unfolded state, the second part 720 unfolds and is located on the front side of the chassis 200. The second part 720 can be rolled up and stored or unfolded as the support frame 400 moves. Alternatively, the second part 720 can be controlled independently, for example, unfolding and connecting to the support frame 400 after the support frame 400 has moved.

[0061] The third part 730 is rolled up and stored in the first unfolded state, either behind the chassis 200 or behind the seat 600. In the second unfolded state, it unfolds and is positioned behind the chassis 200, simultaneously connecting with the first part 710 to wrap around the perimeter and bottom of the carrying space. The connections between the various parts of the bib 700 and the folding frame 100 are detachable, such as by webbing, Velcro, or hanging.

[0062] In the second unfolded state, the push handle 300 is in a flat position, and the support frame 400 is in an upward-swinging position. The push handle 300 and the support frame 400 are located on opposite sides of the folding frame 100 and form a ring-shaped frame. This ring-shaped frame is located on top of the chassis 200 to define the top edge of the carrying space. Corresponding to the unfolding of the third part 720, which connects with the first part 710 to close the bottom and side of the carrying space, the seat 600 can be stacked and combined on the bottom of the bib 700 for infants and children to sit on, or it can be folded and stored at the bottom of the carrying space. The carrying space in the second unfolded state is larger than that in the first unfolded state, allowing for the placement of more goods.

[0063] The folding stroller frame 100 includes a trailing rod 800, which is a foldable or telescopic structure and has an unfolded state and a folded state. The front of the chassis 200 has a mounting section for detachable installation of the trailing rod 800. When the stroller 1000 is in stroller mode, the trailing rod 800 switches to the folded state and is stored. For example, a storage area is provided in the second part 720, or a storage area is formed between the second part 720 and the seat 600, with the trailing rod 800 located within this storage area, or it can be stored within the first part 710.

[0064] In one embodiment, the chassis 200 includes two opposing side frames 201, and a detachable first crossbar 230 is connected between the two side frames 201. In a first unfolded state, the first crossbar 230 is in place to enhance the structural strength of the folding frame 100. Preferably, the first crossbar 230 is supported on the bottom of the seat 610 to provide load-bearing strength to the seat 610. In a second unfolded state, the first crossbar 230 is removed to avoid the load-bearing space, so that the top of the load-bearing space is open and uninterrupted.

[0065] like Figure 4 As shown, the joint structures of the two side frames 201 are respectively provided with adapter slots 202 on the opposite side, and the two ends of the first crossbar 230 are respectively engaged with the corresponding adapter slots 202. In a preferred embodiment, the first crossbar 230 is built into the seat 610 and extends out of the seat 600 at both ends for insertion and engagement with the adapter slots 202, thereby improving the connection strength between the seat 600 and the folding frame 100. When switching to trailer mode, the first crossbar 230 can be removed at the same time as the seat 600, making operation convenient.

[0066] In one embodiment, each side frame 201 includes a first support member 210 and a second support member 220. The front ends of the two first support members 210 are connected by a connecting rod and serve as front legs, while the two second support members 220 constitute rear legs. The mounting part is disposed on the connecting rod. The tops of the first support members 210 and the second support members 220 are hinged by a joint structure 270, and wheels are respectively mounted on their bottoms. The wheels include a front wheel 241 mounted on the bottom of the front leg and a rear wheel 242 mounted on the bottom of the rear leg. When the folding frame 100 switches between different unfolded states, the first support members 210 and the second support members 220 remain relatively fixed. The aforementioned adapter slot 202 is disposed at the joint structure 270. A first locking mechanism is provided between the front leg and the rear leg to keep them fixed. The first locking mechanism includes, for example, a first locking pin movably disposed on one of the first support members and the second support member. The first locking pin has a locking state that acts on the other to restrict the rotation of both, and a corresponding unlocking state. A first unlocking member is provided at the joint structure to unlock the first locking mechanism.

[0067] The bottom of the push handle 300 is coaxially hinged to the first support member 210 and the second support member 220 via a joint structure. The folding frame 100 in this embodiment also has a folded state (e.g., Figure 7 The first support member 210 and the second support member 220 move closer together, and the push handle 300 moves closer to the second support member 220.

[0068] In this configuration, the support frame 400 is in a drooping position and abuts against the first support member 210, or the support frame 400 is in a drooping position within the plane defined by the two first support members 210. Preferably, a second locking mechanism is provided between the support frame 400 and the chassis 200, and between the support frame 400 and the chassis 200, to maintain its own posture. Specifically, the support frame 400 is U-shaped, and the two ends of the opening are respectively hinged to the inner side of the joint structure 270 on the corresponding side. The second locking mechanism includes, for example, a second locking pin movably disposed in at least one of the support frame and the joint structure. The second locking pin has a locked state that acts on the other to restrict the rotation of both, and a relatively unlocked state.

[0069] In one embodiment, the folding frame 100 further includes a connecting rod 250, one end of which is hinged to the second support member 220, and the other end is slidably and positionably connected to the push handle 300 to adapt to the push handle 300 switching postures. Specifically, a slide seat is slidably disposed on the push handle 300, one end of the connecting rod 250 is hinged to the slide seat and moves with the slide seat to adapt to the push handle switching postures, and a locking mechanism (i.e., the third locking mechanism described below) is provided between the slide seat and the push handle 300 to keep the push handle 300 in a first unfolded state or a second unfolded state. The third locking mechanism includes, for example, a plurality of third locking pins movably disposed within the push handle 300, each third locking pin acting on the slide seat in the corresponding unfolded state to restrict its sliding relative to the push handle 300. A transmission member that links all the third locking pins and a third unlocking member are movably disposed within the push handle 300, wherein the third unlocking member is linked to the transmission member via a pull cable to unlock the third locking pins.

[0070] Among them, the push rod 300 is U-shaped, and the two ends of the opening are hinged to the joint structure on the corresponding side.

[0071] See Figure 8 In one embodiment, a detachable second crossbar 260 is connected between the two connecting rods 250, and the connection between the second crossbar 260 and the connecting rods 250 is the same as the connection between the first crossbar 230 and the joint structure described above. In the first unfolded state, the second crossbar 260 is supported on the seat 610 together with the first crossbar 230.

[0072] The transformable multi-purpose stroller of this application has a folding frame in the first unfolded state, with the push handle in an upright position for pushing, and the stroller is used as a baby stroller. At the same time, the carrying space in the chassis can also accommodate a few items. In the second unfolded state, the stroller is used as a trailer and has a larger carrying space, which can carry children or load goods. It is convenient to switch the unfolded state according to actual needs in daily life, improve utilization, and reduce the occupation of storage space.

[0073] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0074] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are quite specific and detailed. However, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A deformable multi-purpose trolley, characterized in that, Includes a folding frame, the folding frame comprising: A chassis, equipped with wheels, and having a load-bearing space within the chassis; The push handle is hinged to the chassis and has an upright and a horizontal orientation relative to the chassis. The support frame is hinged to the chassis and has a drooping posture and an upward swing posture. The folding frame has; In the first unfolded state, the support frame is in a drooping posture, opening one side of the bearing space, and the push handle is in an upright posture for support. In the second unfolded state, the push handle is in a flat position, the support frame is in an upward swing position, the push handle and the support frame are respectively located on two opposite sides of the folding frame and form an annular frame, which is located on the top of the chassis to define the top edge of the load-bearing space.

2. The deformable multi-purpose trolley according to claim 1, characterized in that, The chassis includes two opposing side frames, and a detachable first crossbar connects the two side frames, wherein: In the first deployed state, the first crossbar is in place; In the second unfolded state, the first crossbar is removed to make way for the load-bearing space; The folding frame also includes a trailing bar that is detachably connected to the chassis.

3. A deformable multi-purpose trolley according to claim 2, characterized in that, The two sides of the frame are equipped with adapter slots on opposite sides, and the two ends of the crossbar are respectively engaged with the corresponding adapter slots.

4. A deformable multi-purpose trolley according to claim 2, characterized in that, Each of the side frames includes a first support member and a second support member. The tops of the first support member and the second support member are hinged together by a joint structure, and the wheels are respectively installed at the bottoms of the two support members. When the folding frame switches between different unfolded states, the first support member and the second support member remain relatively fixed.

5. A deformable multi-purpose trolley according to claim 4, characterized in that, When in a drooping position, the support frame is in contact with the first support member. A second locking mechanism is provided between the support frame and the chassis to maintain its own posture.

6. A deformable multi-purpose trolley according to claim 4, characterized in that, The folding frame also includes: A slide block is slidably mounted on the push handle along the extension direction of the push handle, and a locking mechanism is provided between the slide block and the push handle to restrict the sliding of the slide block; The connecting rod is hinged at one end to the second support member and at the other end to the slide block, and moves with the slide block to adapt to the changing posture of the push rod.

7. A deformable multi-purpose trolley according to claim 4, characterized in that, Both the push handle and the support frame are U-shaped, and the two ends of the opening are respectively hinged to the joint structure on the corresponding side; A locking mechanism is provided between the chassis and the support frame to restrict the support frame to an upward swing posture.

8. A deformable multi-purpose trolley according to claim 4, characterized in that, The first support member, the second support member, and the push rod are rotatably connected by a joint structure; The folding frame also has a folded state, in which the first support member, the second support member, and the push rod rotate around the joint structure and move closer to each other.

9. A deformable multi-purpose trolley according to claim 1, characterized in that, Includes a seat that is detachably attached to the folding frame.

10. A deformable multi-purpose trolley according to claim 9, characterized in that, Includes a bib, said bib comprising: The first part consists of the components in their unfolded states, located directly below and on the left and right sides of the chassis. The second part is located on the front side of the support frame in the first unfolded state to open the front side of the load-bearing space, and in the second unfolded state, it is located on the front side of the chassis. The third part is located on the rear side of the chassis or the rear side of the seat in the first unfolded state, and is located on the rear side of the chassis in the second unfolded state.

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