Easy-to-fold carrying device

Abstract

The present application discloses an easy-to-fold carrying device, comprising a support framework. The support framework comprises: a bottom support assembly, the bottom support assembly comprising a first bottom frame and a second bottom frame; a rear blocking assembly, comprising a first rear frame and a second rear frame; a side blocking assembly, comprising a central rod, an upper pull rod, and a lower pull rod, wherein the rear blocking assembly and the bottom support assembly are hingedly connected to the central rod; the upper pull rod, the central rod and the rear blocking assembly constitute an upper deformation mechanism; and the lower pull rod, the central rod and the bottom support assembly constitute a lower deformation mechanism; and a linkage member, separately hingedly connected to the upper deformation mechanism and the lower deformation mechanism, wherein the upper deformation mechanism and the lower deformation mechanism deform synchronously. In an unfolded state, the support framework forms a bearing space; and in a folded state, components get close to the central rod. The carrying device in the present application has a simple and compact structure, is easy to fold, and has a small and neat size after being folded, thereby facilitating storage and transportation.

Description

Easy-to-fold transport device Technical Field

[0001] This application relates to the field of child vehicles, and in particular to foldable transport devices. Background Technology

[0002] Child vehicles are primarily used outdoors and during travel to transport goods or carry children. These include strollers, scooters, and child trailers. As people's lifestyles become more diverse, these vehicles can sometimes be used in different modes, such as while jogging, cycling, skiing, or walking.

[0003] In the use of child-friendly vehicles, it is often necessary to balance the comfort of children while riding and the convenience of storage and transportation. Therefore, people pay particular attention to the folding performance of such products. For example, Chinese patent document CN221233984U provides a folding bicycle trailer with a top frame. It solves the technical problem of poor folding effect of existing bicycle trailers. This folding bicycle trailer with a top frame includes a rectangular ring-shaped base frame, with a front frame pivotally connected to the base frame on both sides; an upper connecting rod, one end of which is pivotally connected to the side of the front frame away from the base frame; a lower connecting rod, one end of which is pivotally connected to the side of the base frame away from the front frame and located below the upper connecting rod; and a folding sleeve, including a guide cylinder axially sleeved on the outside of the upper connecting rod, and an upper fastening knob passing between the guide cylinder and the upper connecting rod. Technical issues

[0004] Existing child vehicles have complex folding structures and are still quite bulky when folded. Technical solutions

[0005] To address the aforementioned technical problems, this application discloses a foldable transport device with a simple and compact structure, facilitating production and assembly; it is easy to fold and operate; and its folded size is compact and regular, making it convenient for storage and transportation.

[0006] The foldable transport device of this application includes a support frame, the support frame comprising:

[0007] A base support assembly, the base support assembly comprising a first base frame and a second base frame hinged to each other;

[0008] The rear bumper assembly is located behind the bottom support assembly and includes a first rear frame and a second rear frame that are hinged to each other.

[0009] A side stop assembly, located between the bottom support assembly and the rear stop assembly, includes a central rod and an upper pull rod and a lower pull rod hinged to the upper part of the central rod; the other end of the upper pull rod is hinged to the upper part of the rear stop assembly, and the other end of the lower pull rod is hinged to the front part of the bottom support assembly; the lower part of the rear stop assembly and the rear part of the bottom support assembly are hinged to the lower part of the central rod; the upper pull rod, the central rod, and the rear stop assembly constitute a deformable upper deformation mechanism; the lower pull rod, the central rod, and the bottom support assembly constitute a deformable lower deformation mechanism.

[0010] A linkage is respectively hinged to one of the components of the upper deformation mechanism and the lower deformation structure. When one of the upper deformation mechanism and the lower deformation mechanism deforms, the linkage synchronously drives the other to deform.

[0011] In the unfolded state, the supporting frame forms a load-bearing space; in the folded state, the components of the upper deformation mechanism and the lower deformation structure are close to the central rod.

[0012] 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.

[0013] In one embodiment, the upper part of the central rod is provided with a first joint, and the upper pull rod and the lower pull rod are hinged to the first joint; the lower part of the central rod is provided with a second joint, and one of the base frames of the bottom support assembly and one of the rear frames of the rear stop assembly are hinged to the second joint;

[0014] In the longitudinal direction of the transport device, the first joint and the second joint are misaligned.

[0015] In one embodiment, the first joint provides two independent hinge points and is hinged to the upper pull rod and the lower pull rod respectively; the second joint provides two independent hinge points and is hinged to the second base frame and the second rear frame respectively.

[0016] In one embodiment, the two ends of the linkage are respectively hinged to the second base frame and the second rear frame, and the linkage is located near the second joint.

[0017] In one embodiment, the second rear frame is provided with a rear frame rocker arm for hinged to the linkage, and the second base frame is provided with a base frame rocker arm for hinged to the linkage. When one of the second rear frame and the second base frame moves toward or away from the center rod, the linkage drives the other to move toward or away from the center rod synchronously.

[0018] In one embodiment, the rear frame rocker arm is located on the same side as the second rear frame relative to the hinge point of the second rear frame and the second joint; the base frame rocker arm is located on opposite sides of the hinge point of the second base frame relative to the hinge point of the second base frame and the second joint.

[0019] In one embodiment, the linkage and the second joint are misaligned in the left-right direction of the transport device.

[0020] In one embodiment, the first base frame and / or the second base frame are provided with a traveling mechanism for cooperating with the support surface, the traveling mechanism being rollers and / or sliding components.

[0021] In one embodiment, the first base frame is provided with a front traveling mechanism at the end away from the second base frame, and the second base frame is provided with a rear traveling mechanism in the middle. In the folded state, the front traveling mechanism and the rear traveling mechanism overlap at least partially in the left-right direction of the transport device.

[0022] In one embodiment, a push rod is hinged to the upper pull rod and / or the first rear frame. In the unfolded state, the push rod extends away from the bearing space, and in the folded state, the push rod approaches the upper pull rod.

[0023] In one embodiment, the linkage includes a first gear and a second gear that mesh with each other. The first gear is fixedly connected to the bottom support assembly, and the second gear is fixedly connected to the rear bumper assembly. The upper deformation mechanism folds down, and the second gear drives the first gear to rotate, thereby causing the lower deformation mechanism to fold down. Beneficial effects

[0024] The technical solution disclosed in this application provides a simple and compact structure through structural optimization of the carrier device, which facilitates production and assembly and reduces production costs; at the same time, the components are interconnected, making folding convenient and easy to operate; and the overall compact and regular size after folding facilitates storage and transportation. Attached Figure Description

[0025] Figure 1 is a schematic diagram of a foldable transport device structure in one embodiment of this application;

[0026] Figure 2 is an enlarged schematic diagram of the linkage part of the transport device in Figure 1, which is easy to fold;

[0027] Figure 3 is a schematic diagram of the foldable transport device in Figure 1 in the folded state.

[0028] Figure 4 is an enlarged schematic diagram of the linkage part of the transport device in Figure 3, which is easy to fold.

[0029] Figure 5 is a structural schematic diagram of a foldable transport device in an unfolded state according to an embodiment of this application;

[0030] Figure 6 is a schematic diagram of the foldable transport device shown in Figure 1 in the folded state.

[0031] The annotations in the figure are explained as follows:

[0032] 100. Base support assembly; 110. First base frame; 120. Second base frame; 121. Base frame rocker arm;

[0033] 200. Rear bumper assembly; 210. First rear frame; 220. Second rear frame; 221. Rear frame rocker arm;

[0034] 300, Side stop assembly; 310, Center rod; 311, First joint; 312, Second joint; 320, Upper pull rod; 330, Lower pull rod;

[0035] 400. Linkage component; 410. First gear; 420. Second gear;

[0036] 510. Front traveling mechanism; 520. Rear traveling mechanism;

[0037] 600, push bar. Embodiments of the present invention

[0038] 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.

[0039] 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.

[0040] 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.

[0041] Referring to the embodiments shown in Figures 1 to 4, this application discloses a foldable transport device, including a support frame, wherein the support frame includes:

[0042] The base support assembly 100 includes a first base frame 110 and a second base frame 120 that are hinged to each other.

[0043] The rear bumper assembly 200 is located behind the bottom support assembly 100 and includes a first rear frame 210 and a second rear frame 220 that are hinged to each other.

[0044] The side block assembly 300, located between the bottom support assembly 100 and the rear block assembly 200, includes a central rod 310 and an upper pull rod 320 and a lower pull rod 330 hinged to the upper part of the central rod 310; the other end of the upper pull rod 320 is hinged to the upper part of the rear block assembly 200, and the other end of the lower pull rod 330 is hinged to the front part of the bottom support assembly 100; the lower part of the rear block assembly 200 and the rear part of the bottom support assembly 100 are hinged to the lower part of the central rod 310; the upper pull rod 320, the central rod 310, and the rear block assembly 200 constitute a deformable upper deformation mechanism; the lower pull rod 330, the central rod 310, and the bottom support assembly 100 constitute a deformable lower deformation mechanism.

[0045] The linkage 400 is respectively hinged to one of the components in the upper deformation mechanism and the lower deformation structure. When one of the upper deformation mechanism and the lower deformation mechanism deforms, the linkage 400 synchronously drives the other to deform.

[0046] In the unfolded state (as shown in Figure 1), the upper deformation mechanism and the lower deformation structure unfold, forming a load-bearing space inside the supporting frame; in the folded state (as shown in Figure 3), the components of the upper deformation mechanism and the lower deformation structure move closer to the central rod 310.

[0047] In actual products, the transport device also includes flexible components connected to the supporting frame. These flexible components can be used to enclose the load-bearing space, such as fabric covers.

[0048] The technical solution disclosed in this application, through structural optimization of the transport device, provides a simple and compact structure, facilitating production and assembly and reducing production costs. Simultaneously, the linkage 400 enables mutual linkage between the upper deformation mechanism and the lower deformation structure, facilitating folding and operation. Overall, the transport device of this application achieves the aforementioned advantages while also considering its folded size, resulting in a compact and regular overall design that is easy to store and transport.

[0049] Understandably, the transport device can be equipped with a locking mechanism to maintain that state in different states. The locking mechanism can be an independent component that restricts the relative movement between components, or it can be two relatively moving components that interfere with each other during their stroke to determine the limit position, and achieve constraint through gravity, magnetism, or other means. The locking mechanism can be implemented in conjunction with existing technologies, which will not be elaborated here.

[0050] The specific configuration of the components will be further explained in conjunction with the accompanying drawings.

[0051] Referring to the embodiments shown in Figures 1 and 2, the upper part of the central rod 310 is provided with a first joint 311, and the upper pull rod 320 and the lower pull rod 330 are hinged to the first joint 311; the lower part of the central rod 310 is provided with a second joint 312, and one of the base frames of the bottom support assembly 100 and one of the rear frames of the rear stop assembly 200 are hinged to the second joint 312. The first joint 311 and / or the second joint 312 can achieve coaxial hinge of corresponding components, or they can achieve individual hinge. For example, as shown in the figures, the first joint 311 provides two independent hinge points and is hinged to the upper pull rod 320 and the lower pull rod 330 respectively; the second joint 312 provides two independent hinge points and is hinged to the second base frame 120 and the second rear frame 220 respectively. In the spatial position of the central rod 310, referring to the unfolded state shown in Figure 1, in the front-rear direction of the carrying device (e.g., the left-right direction in Figure 1), the first joint 311 and the second joint 312 are staggered, that is, the central rod 310 is tilted. Furthermore, the first joint 311 is closer to the front of the transport device (e.g., the right side in Figure 1) than the second joint 312. The inclined center rod 310 can optimize the volume performance of the transport device in the folded state while ensuring the load-bearing space in the unfolded state.

[0052] Referring to the embodiment shown in Figure 2, the linkage 400 is hinged at both ends to the second base frame 120 and the second rear frame 220, respectively, and is located near the second joint 312. The linkage 400 may include multiple interconnected components to form a linkage mechanism, or it may be a single component. In Figure 2, the second rear frame 220 is provided with a rear frame rocker arm 221 for hinged to the linkage 400, and the second base frame 120 is provided with a base frame rocker arm 121 for hinged to the linkage 400. When one of the second rear frame 220 and the second base frame 120 moves toward or away from the center rod 310, the linkage 400 drives the other to move toward or away from the center rod 310 synchronously. Furthermore, compared to the hinge point of the second rear frame 220 and the second joint 312, the rear frame rocker arm 221 is located on the same side as the second rear frame 220; "Same side" means that a perpendicular line is drawn from the hinge axis to the second rear frame 220, and the hinge axis of the rear frame rocker arm 221 and the linkage member 400 lies on this perpendicular line, or the hinge axis of the rear frame rocker arm 221 and the linkage member 400 lies on the same side of this perpendicular line as the second rear frame 220. Compared to the hinge point of the second base frame 120 and the second joint 312, the base frame rocker arm 121 is located on opposite sides of the hinge point of the second base frame 120, that is, a perpendicular line is drawn from the hinge axis to the second base frame 120, and the hinge axis of the base frame rocker arm 121 and the linkage member 400 lies on opposite sides of this perpendicular line. This arrangement enables the upper and lower deformation mechanisms to achieve a synchronized effect that meets preset requirements within a compact space. As shown in Figure 4, the rear frame rocker arm 221 and the second rear frame 220 are fixedly installed, and the base frame rocker arm 121 and the second base frame 120 are fixedly installed.

[0053] Furthermore, in the left and right directions of the transport device (e.g., perpendicular to the plane of the paper in Figure 2), the linkage 400 and the second joint 312 are staggered to avoid mutual interference between components during movement, thereby further optimizing the overall volume performance of the transport device.

[0054] The transport device requires a traveling mechanism to move on the support surface. Structurally, the traveling mechanism can be installed on the support frame of the transport device. In the embodiment shown in Figure 1, the first base frame 110 and / or the second base frame 120 are provided with a traveling mechanism for cooperating with the support surface. To adapt to different usage scenarios, the traveling mechanism is a roller and / or a sliding component. Further, the end of the first base frame 110 away from the second base frame 120 is provided with a front traveling mechanism 510, and the middle of the second base frame 120 is provided with a rear traveling mechanism 520. The front traveling mechanism 510 is a caster wheel, and the rear traveling mechanism 520 is a roller. The roller of the rear traveling mechanism 520 is larger than that of the front traveling mechanism 510. Referring to Figure 3, in the folded state, the front traveling mechanism 510 and the rear traveling mechanism 520 overlap at least partially in the left-right direction of the transport device.

[0055] Structurally, each component of the support frame of the transport device can be used to drive the movement of the transport device. For example, in one embodiment, a traction device is provided on the bottom support assembly 100 or the pull rod 330. As another example, in the embodiment shown in Figure 1, a push rod 600 is hinged to the upper pull rod 320 and / or the first rear frame 210. In the unfolded state, the push rod 600 extends away from the load-bearing space. Referring to Figure 3, in the folded state, the push rod 600 is close to the upper pull rod 320.

[0056] In one embodiment, the linkage 400 includes a linkage rod fixedly connected to the bottom end of the central rod 310 and extending to both sides. One end of the linkage rod is hinged to the rear end of the second base frame 120 around a first axis, and the other end is hinged to the bottom end of the second rear frame 220 around a second axis. The linkage 400 also includes a first gear 410 and a second gear 420 that mesh with each other. The first gear 410 is fixed to the second base frame 120 and coaxially arranged with the first axis, and the second gear 420 is fixed to the second rear frame 220 and coaxially arranged with the second axis.

[0057] One folding method is provided: the second rear frame 220 rotates and folds (i.e., the upper deformation mechanism folds), the second gear 420 rotates synchronously and drives the first gear 410 to rotate, thereby driving the second base frame 120 to rotate and fold (i.e., the lower deformation mechanism folds).

[0058] The corresponding unfolding method is as follows: the second base frame 120 rotates and unfolds (i.e., the lower deformation mechanism unfolds), the first gear 410 rotates synchronously, and drives the second gear 420 to rotate, which in turn drives the second rear frame 220 to rotate and unfold (i.e., the upper deformation mechanism unfolds).

[0059] The technical features of the embodiments described above 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.

[0060] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, 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 foldable transport device, comprising a support frame, characterized in that, The supporting frame includes: A base support assembly, the base support assembly comprising a first base frame and a second base frame hinged to each other; The rear bumper assembly is located behind the bottom support assembly and includes a first rear frame and a second rear frame that are hinged to each other. A side stop assembly, located between the bottom support assembly and the rear stop assembly, includes a central rod and an upper pull rod and a lower pull rod hinged to the upper part of the central rod; the other end of the upper pull rod is hinged to the upper part of the rear stop assembly, and the other end of the lower pull rod is hinged to the front part of the bottom support assembly; the lower part of the rear stop assembly and the rear part of the bottom support assembly are hinged to the lower part of the central rod; the upper pull rod, the central rod, and the rear stop assembly constitute a deformable upper deformation mechanism; the lower pull rod, the central rod, and the bottom support assembly constitute a deformable lower deformation mechanism. A linkage is respectively hinged to one of the components of the upper deformation mechanism and the lower deformation structure. When one of the upper deformation mechanism and the lower deformation mechanism deforms, the linkage synchronously drives the other to deform. In the unfolded state, the supporting frame forms a load-bearing space; in the folded state, the components of the upper deformation mechanism and the lower deformation structure are close to the central rod.

2. The easily foldable transport device according to claim 1, characterized in that, The upper part of the central rod is provided with a first joint, and the upper pull rod and the lower pull rod are hinged to the first joint; the lower part of the central rod is provided with a second joint, and one of the base frames of the bottom support assembly and one of the rear frames of the rear stop assembly are hinged to the second joint. In the longitudinal direction of the transport device, the first joint and the second joint are misaligned.

3. The easily foldable transport device according to claim 2, characterized in that, The first joint provides two independent hinge points and is hinged to the upper pull rod and the lower pull rod respectively; the second joint provides two independent hinge points and is hinged to the second base frame and the second rear frame respectively.

4. The easily foldable transport device according to claim 2, characterized in that, The two ends of the linkage are respectively hinged to the second base frame and the second rear frame, and the linkage is located near the second joint.

5. The easily foldable transport device according to claim 2, characterized in that, The second rear frame is provided with a rear frame rocker arm for hinged to the linkage, and the second base frame is provided with a base frame rocker arm for hinged to the linkage. When one of the second rear frame and the second base frame moves toward or away from the center rod, the linkage drives the other to move toward or away from the center rod synchronously.

6. The easily foldable transport device according to claim 5, characterized in that, Compared to the hinge point of the second rear frame and the second joint, the rear frame rocker arm is located on the same side as the second rear frame; compared to the hinge point of the second base frame and the second joint, the base frame rocker arm is located on opposite sides of the hinge point of the second base frame.

7. The easily foldable transport device according to claim 5, characterized in that, In the left-right direction of the transport device, the linkage and the second joint are misaligned.

8. The easily foldable transport device according to claim 1, characterized in that, The first base frame and / or the second base frame are provided with a traveling mechanism for cooperating with the support surface, the traveling mechanism being rollers and / or sliding components.

9. The easily foldable transport device according to claim 1, characterized in that, The first base frame has a front traveling mechanism at its end away from the second base frame, and the second base frame has a rear traveling mechanism in its middle. In the folded state, the front traveling mechanism and the rear traveling mechanism overlap at least partially in the left-right direction of the transport device.

10. The easily foldable transport device according to claim 1, characterized in that, A push handle is hinged to the upper pull rod and / or the first rear frame. In the unfolded state, the push handle extends away from the bearing space, and in the folded state, the push handle approaches the upper pull rod.

11. The easily foldable transport device according to claim 1, characterized in that, The linkage includes a first gear and a second gear that mesh with each other. The first gear is fixedly connected to the bottom support assembly, and the second gear is fixedly connected to the rear bumper assembly. The upper deformation mechanism folds down, and the second gear drives the first gear to rotate, thereby causing the lower deformation mechanism to fold down.

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