Handcart

Abstract

The invention relates to a foldable handcart (1) consisting of a receiving basket (2), wherein the receiving basket (2) has a base (3), wherein a front (4), a rear (5) and two side walls (6, 7) project from the base (3) to one side in the driving position, wherein a front wheel (8, 8.1) is arranged at the front (4) in a front base corner (12, 12.1) and a rear wheel (9.1, 9.2) is arranged at the rear (5) in a rear base corner (13, 13.1) projecting to the other side from the base (3), wherein the side walls (6, 7) each consist of at least two X-shaped scissor joints (10, 10.1, 11, 11.1) which are pivotably arranged at the front (4) and at the rear (5), wherein the at least two X-shaped scissor joints (10, 10.1, 11, 11.1) are pivotable relative to each other via a floor pivot joint (14, 15) and a top edge pivot joint (16, 17), wherein the side walls (6, 7) each have a top edge strut (18, 19) extending from the front (4) to the rear (5), wherein the floor (3) is reversibly foldable to one side via a floor central joint (22), wherein the floor central joint (22) is arranged parallel to the front (4) and parallel to the rear (5) in the driving position, wherein the top edge struts (18, 19) are interrupted in the middle, thereby forming two struts (29, 29.1) from the top edge struts (18, 19) which are connected to the top edge pivot joints (16, 17) in the driving position, wherein in the transport position the two struts (29, 29.1) are separated from the respective The upper edge pivot joint (16, 17) can be released and pivoted to the other side, with the two struts (29, 29.1) being connected to each other centrally via a respective strut joint (31).

Description

Technical field

[0001] The invention relates to a foldable handcart according to the preamble of claim 1. State of the art

[0002] Such foldable handcarts are already known and commonly used in a variety of forms and designs. For example, patent KR 10 2024 0034034 A discloses a foldable stroller consisting of a foldable frame, a wheeled section, a seat, and a canopy, serving as a means of transport for small children. The foldable frame comprises a front main frame, which stands upright at the front end and supports the front of the frame, and a rear main frame, which supports the back of the frame and forms a rectangular frame structure. The stroller also has a side frame connected between the front and rear main frames. This side frame is designed with a symmetrical axle rotation structure, ensuring stable support and allowing it to fold along the coupled axle.This makes the cart compact and easy to fold, while ensuring stability and ease of use.

[0003] Furthermore, EP 2 397 388 A2 discloses a collapsible transport trolley comprising a frame which, when unfolded, forms a rectangular storage space. The trolley also features a drawbar with a handle and four wheels located on the underside of the frame. The frame is equipped with upper and lower fastening elements, each having several articulated fastening devices for receiving a frame rod. Two articulated mechanisms are provided on each of the frame's longitudinal sides, connected to each other via joints, enabling the frame to be folded and unfolded.

[0004] US Patent 2,020,766 A discloses collapsible transport baskets comprising two rigid end frames and scissor-like side frames positioned between them. This allows the container to be folded lengthwise to save space. The end frames are equipped with rollers to facilitate easy transport, even when loaded. A flexible container body made of textile material is positioned between the frames, which folds accordion-like when collapsed. Operation is provided by a handle pivotally mounted on one of the end frames, which is connected to the side frames via a linkage, thus mechanically assisting the setup and folding process. Locking devices and bottom bracing are also provided to ensure sufficient stability when the container is unfolded.

[0005] Reference is also made to US 2017 / 0 259 838 A1, which discloses a folding cart and connecting and stabilizing devices for folding carts, wherein a folding cart comprises a first and a second frame pivotally connected to each other by a connecting and stabilizing device. This connecting and stabilizing device allows the first and second frames to move toward or away from each other, thereby folding or unfolding the cart. The connecting and stabilizing device includes positioning pins and associated slots into which the positioning pins engage to prevent unintentional folding of the cart.

[0006] Reference is further made to DE 20 2019 105 656 U1, which discloses a foldable stroller comprising a front wheel unit with a front wheel frame and two wheels, and a rear wheel unit with a rear wheel frame, two wheels, and a U-shaped push bar extending to the rear. The folding mechanism consists of side folding frames with protective tubes, a central support frame with folding joints, and a vertical support bar. The protective tubes are articulated to the front and rear wheel frames as well as the folding joints, enabling a stable and foldable construction.

[0007] WO 2020 / 248 800 A1 discloses a carriage in its unfolded and folded states, consisting of two side frames, a vertical synchronization bar, and front and rear foot assemblies. The front foot assembly comprises a foot bar, pivoting rods, and a wheel on the underside. The rear foot assembly is similarly constructed. In the folded state, the foot assemblies move towards the synchronization bar; in the unfolded state, they extend. A support element connects the lower pivoting rods and retracts during folding, thus simplifying the design.

[0008] US Patent 10,501,103 B1 discloses an articulated frame for a wagon that has an open and a closed position. The frame includes eight corner joints, divided into four upper and four lower joints. The upper corner joints are located at the front right, front left, rear right, and rear left. Similarly, the lower corner joints are located at the front right, front left, rear right, and rear left. Additionally, there are four linear joints: two upper center joints on the right and left sides, and two lower center joints on the right and left sides. The frame is supported by six vertical supports, positioned at the front right, front left, center right, center left, rear right, and rear left.

[0009] Reference is further made to US Patent 11,370,467 B1, which discloses a foldable cart that can be switched between an unfolded and a compact folded configuration. The cart basket is supported by a collapsible frame with height-adjustable legs at the corners. Guide elements extending upwards from the wheel mounts are movable within the height-adjustable legs, allowing for individual adjustment of the frame height and the basket mounted upon it.

[0010] Reference is also made to KR 10 2016 0 118 839 A, which discloses another foldable cart with front and rear frame sections, the frame sections being connected by two side sections, one of which is foldable in the middle. A lower frame section forms the base. A handle at the rear serves as a pull bar, and four wheels are mounted at the lower corners.

[0011] US patent 2018 / 297622A1 discloses a folding cart comprising a frame with opposing front and rear frame sections. A floor assembly consists of front and rear frame struts that are articulated to each other and to the front and rear frame sections.

[0012] US patent 11,498,601 B2 discloses a foldable cart with a footwell for transporting small children or other items. The cart features a sturdy frame with scissor-type joints that allow it to fold compactly for storage and unfold for use. The footwell provides a place for children to rest their feet inside the cart.

[0013] The KR 101573235 B1 designation reveals a foldable stroller that can be folded to save space and easily stored in the trunk of small vehicles. A securely fixed frame prevents damage or injury when folded.

[0014] The WO 2017 / 155 157 A1 concerns a foldable trolley with a footwell, designed for transporting small children or other items. The trolley has a sturdy frame with scissor-type joints that allow it to be folded compactly for storage and unfolded for use. The fabric covering of the trolley is designed so that parts can be removed for cleaning the trolley and the footwell.

[0015] US Patent 2010 / 0090444A1 concerns a foldable cart with a footwell, designed for transporting small children or other items. The cart has a sturdy frame with scissor-type joints that allow it to fold compactly for storage and unfold for use.

[0016] State-of-the-art handcarts are complex structures consisting of several key components. The main components include two side panels, a front panel, a rear panel, and a base. These elements work together to create a stable yet flexible structure suitable for various applications.

[0017] The side panels of the handcart consist of several struts that are articulated at the four corners of each panel. These struts form the frame of the side panels and provide stability and flexibility. The articulated connections at the corners allow the side panels to be folded as needed or locked in a fixed position. The joints play a crucial role here, as they both stabilize the struts and ensure the flexibility of the construction.

[0018] In the center of the state-of-the-art handcart are two central joints that play a key role in the overall structure. These joints are strategically positioned so that one is located in the upper section and one in the lower section. Both central joints are diagonally connected to the corners of the side panels. These diagonal connections are made via additional braces that reinforce the stability of the handcart. These diagonal braces ensure that the structure retains its shape even under load or movement.

[0019] Another important feature is the diagonal braces that intersect within the structure. At the points where these braces intersect, there is a further joint that connects them. This articulated connection allows the braces to adapt to the movements or loads of the cart while simultaneously providing high stability. This design prevents the cart from deforming or tipping under load.

[0020] The base of the handcart, according to the state of the art, consists of two separate base sections, which are also articulated to the rest of the structure. Each of these two base sections is attached to the lower corners of the two side panels, providing additional stability. This articulated connection allows the base to move as needed, for example, when folding the cart. At the same time, these connections ensure that the base remains firm and secure under load.

[0021] In the center of the base, the two separate base sections are connected by a further joint. This central joint allows for a degree of movement between the base sections, which is particularly advantageous during transport or storage of the cart. At the same time, the joint ensures that the two base sections function as a single, unified surface during normal use, providing a stable base for the transported goods.

[0022] Together, these components result in a well-designed construction that perfectly combines stability, flexibility, and functionality. The articulated connections in the side panels, struts, and base allow the wagon to adapt to the demands of various uses. At the same time, the diagonally reinforced structure ensures that the wagon remains stable even under heavy loads. Furthermore, the movable base and the central connection in the middle enable space-saving storage and easy transport without compromising functionality. Object of the invention

[0023] The object of the present invention is to create a foldable handcart that takes up very little space when folded, without compromising stability or functionality when unfolded. In addition to saving space when folded, quick and easy handling during folding and unfolding is of particular importance. Solution to the task

[0024] The features according to claim 1 lead to the solution of the problem.

[0025] Advantageous embodiments are described in the dependent claims.

[0026] The folding hand truck, whether electrically or manually operated, consists of a basket with a base. In its transport position, the front, rear, and two side panels extend to one side. This arrangement corresponds to the transport position when the hand truck is fully unfolded and pulled across a surface. The transport position is characterized by the front, rear, and side panels projecting outwards from the surface. The advantage of this is that the clear distinction between the transport and carrying positions allows for versatile use of the hand truck for various applications, such as transporting goods or tools. The simple conversion saves time and reduces the effort required for folding and unfolding.

[0027] The side panels consist of two X-shaped scissor joints, pivotally mounted at the front and rear. These X-shaped scissor joints are connected via a bottom pivot joint and a top pivot joint, ensuring flexible movement and the ability to fold and unfold the side panels. Additionally, each of the two X-shaped scissor joints has a centrally located pivot point, which contributes to the stability and maneuverability of the structure. The use of X-shaped scissor joints allows for compact folding while simultaneously ensuring high stability when in use. This reduces storage space requirements and increases the hand truck's durability thanks to the robust joint connections.

[0028] The side walls also include a top edge brace running from the front to the rear, as well as a parallel bottom edge brace. These top and bottom edge braces form the upper and lower boundaries of the side walls and, together with the X-shaped scissor hinges, ensure a stable and symmetrical structure. The bottom edge braces also reinforce the base grid. The symmetrical arrangement of the top and bottom edge braces guarantees even weight distribution, making the handcart easy to maneuver even when heavily loaded. The robust construction minimizes maintenance and repair costs.

[0029] The upper edge struts can be used as a fastening element for, for example, child seat surfaces or the like when in driving position, i.e., when they are horizontally aligned.

[0030] The top edge struts are interrupted in their middle section, creating two separate struts. In the transport position, these struts are connected to the top edge swivel joints via a coupling device. When the handcart is folded for transport, the struts can be disengaged from the top edge swivel joints and folded to one side. An additional strut joint connects the two separate struts, allowing them to fold in a defined shape. The ability to flexibly couple and uncouple the top edge struts enables quick and space-saving folding of the handcart. This reduces storage space and facilitates transport in vehicles or small storage areas.

[0031] The two struts can be pivoted to the other side via the strut joint in the transport position and are connected to each other in the middle. "To the other side" means towards the ground when the folding handcart is used correctly. "Middle" describes the area of ​​the top strut where the two struts point towards each other. In principle, the central strut joint between the two struts of the top strut could be omitted, so that the two side panels of the handcart would have a total of four individual struts. However, this would make handling more difficult in practice, as the two individual struts for each side panel would have to be individually pulled in and attached via the top swivel joint.

[0032] An additional central floor hinge in the base of the handcart allows the base and both floor grids to be folded to one side simultaneously, i.e., away from a surface when in transport position. This central floor hinge extends from one floor pivot joint of one side panel to the other floor pivot joint of the opposite side panel. The advantage here is that the base can be folded reversibly, congruent with the side panels. The central floor hinge facilitates quick and easy switching between transport and driving positions. This saves time and simplifies handling, especially with frequent use.

[0033] The entire handcart can also be covered with fabric or cloth to provide additional stability, protection from the elements, or better secure transported items. A benefit of such a cover is that it protects the load from dirt, rain, and dust, making the handcart ideal for outdoor use. The added stability provided by the fabric or cloth also extends the handcart's lifespan.

[0034] At the front, one front wheel, preferably two front wheels, are attached, each mounted in a respective corner of the front base. These front wheels are equipped with a rotary suspension that allows for free and flexible rotation.

[0035] At the rear, the handcart is equipped with a rear wheel; preferably, two rear wheels are mounted in respective corners of the rear floor. These are rigidly connected to each other via an axle. This axle is pivotally mounted at the rear and, in another embodiment, also fixed in place. The wheels are spring-mounted to dampen shocks and vibrations. The rotary mounting of the front wheels is advantageous, ensuring high maneuverability, while the rigid connection of the rear wheels guarantees stability. The spring mounting improves comfort and protects delicate items from shocks. This makes the handcart versatile and suitable for use on both smooth and uneven surfaces.

[0036] The front of the handcart features a swiveling, telescopically adjustable pull bar. This bar can be extended or shortened as needed, allowing for ergonomic adjustment. A retaining clip at the front securely fixes the pull bar when not in use, while a swivel bracket enables flexible positioning and space-saving storage. The ability to lengthen and shorten the pull bar is advantageous, ensuring ease of use and ergonomic operation, thus preventing back strain while pulling. Its space-saving design reduces the risk of damage during storage.

[0037] At the rear of the handcart is a fold-down handle that can be folded either towards or away from the rear. A height-adjustable handle bracket ensures that the handle can be used ergonomically when driving and does not protrude when transported. The advantage of this fold-down and height-adjustable handle is that it makes the handcart flexible for users of different heights and facilitates storage in confined spaces.

[0038] Both the front and rear feature double joints that connect the X-shaped scissor joints to the respective struts of the upper edge supports. These double joints provide additional stability and flexibility by allowing precise movement of the components. The double joints also significantly increase load-bearing capacity and enable smooth adaptation to various operating conditions, making the hand truck particularly durable and efficient.

[0039] The folding handcart features a mechanism optimized by the coupling device on the top-edge swivel joints. This coupling device is designed to hold a sliding element positioned within the struts. The coupling device is an integral part of the top-edge swivel joint. A strut spring holds this sliding element in a locked position during transport. The spring force ensures that the struts remain securely and reliably connected to the top-edge swivel joints, guaranteeing high stability during transport. A key advantage of this pre-tensioned arrangement is that the strut spring minimizes the risk of the struts unintentionally detaching from the coupling device. This ensures safe operation, even under heavy loads or intensive use.

[0040] At the same time, the locking mechanism increases the durability of the construction, as the struts cannot slip or wobble during use.

[0041] The sliding element can be released in the intermediate or transport position using an operating button. This mechanism allows the sliding element to be moved out of the locked position against the force of the strut spring, thus decoupling the struts. In the transport position, the struts can then be folded to the other side. The advantage here is that the simple operation via the operating button makes the transition between the different positions of the handcart particularly user-friendly. The minimal effort required ensures that even people with limited strength or little experience can operate the handcart without difficulty. This saves time and simplifies handling, especially with repeated use.

[0042] Another feature is the special geometric design of the sliding element. Each strut is equipped with a sliding element that protrudes on the side facing away from the double joint. This sliding element has a base edge and a recessed bevel. In the transport position, the base edge is securely positioned in the coupling device, ensuring a firm and stable connection. The recessed bevel facilitates the connection of the sliding element, and thus the struts, to the coupling device of the upper-edge swivel joint, as it enables precise guidance and movement. The advantage of this geometry is that it offers dual functionality. On the one hand, it ensures a stable locking mechanism in the transport position; on the other hand, it allows the struts to be folded smoothly and quickly into the transport position.

[0043] Additionally, the design of the sliding element allows for optimal positioning of the struts in the transport position. The sliding element protrudes from the strut in such a way that when unfolded, i.e., brought into the driving position, it easily slides into the designated coupling device. Character description

[0044] Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawings; these show in: Fig. 1 a view from an oblique angle above of a handcart according to the invention; Fig. 2 a side view of the Fig. 1; Fig. 3 an enlarged partial view of part of the Fig. 2 in driving position; Fig. 4 the enlarged view from Fig. 3 in intermediate position; Fig. 5 a side view of the handcart according to the invention from the Fig. 2 in intermediate position; Fig. Figure 6 shows a view from a slightly elevated angle of the handcart from the Fig. 5; Fig. 7 a view from an oblique angle above of the handcart according to the invention in transport position; Fig. 8 a side view of the Fig. 7; Fig. 9 a side view of part of the Fig. 8 in transport position; Fig. 10 an enlarged part of the Fig. 3; Fig. 11 the view of Fig. 10 from a different perspective; Fig. 12 a coupling device in enlarged view; Fig. 13 a part of the Fig. 12 in enlarged and cutaway view. Example of implementation

[0045] In Fig. Figure 1 shows a top-down oblique view of a handcart 1 according to the invention. The handcart 1 is foldable. Primarily, the foldable handcart 1 consists of a receiving basket 2 in the form of a frame, the receiving basket 2 having a base 3, a front 4, a rear 5, and two side panels 6, 7. The base 3, in turn, has two floor grids 43, 44 pivotally connected to each other via a central base hinge 22, which are laterally reinforced by lower edge struts 20, 21. The floor grids 43, 44 can be folded upwards to one side approximately in the middle of the base 3 via the central base hinge 22.

[0046] The in Fig. Figure 1 shows the driving position of the folding handcart 1. The driving position always occurs when the folding handcart 1 is fully extended and in motion.

[0047] In the driving position, the front 4, the rear 5, and the two side panels 6, 7 project from the base 3 to one side. Within the scope of this description and invention, "one side" means the side facing away from any surface when the folding handcart 1 is in the driving position.

[0048] In the driving position, which is present when the handcart 1 is properly unfolded and pulled across a surface for use, the upper area of ​​the structure is defined as the area facing one side. This area includes, in particular, upper edge struts 18, 19, which extend from the front 4 to the rear 5 and form the upper boundary of the side walls 6, 7.

[0049] The lower section is defined accordingly as the area facing the opposite side. It comprises the base 3, which is reinforced by the lower edge struts 20, 21. These lower edge struts 20, 21 also extend from the front 4 to the rear 5 and form the base of the side walls 6, 7. The lower edge struts 20, 21 are aligned parallel to the upper edge struts 18, 19, thus ensuring a stable and symmetrical structure of the handcart 1.

[0050] In this driving position, X-shaped scissor joints 10, 10.1, 11, 11.1 are arranged to form a movable connection between the upper edge struts 18, 19 and the lower edge struts 20, 21. Furthermore, each of the two X-shaped scissor joints 10, 10.1, 11, 11.1 has a central joint 30 located in the center of its respective X. The pivoting of the side walls 6, 7 is enabled by the bottom swivel joint 14, 15 in the lower region and the upper edge swivel joint 16, 17 in the upper region, as well as by the respective central joints 30. This arrangement ensures the necessary stability and flexibility of the side walls 6, 7 while the handcart 1 is in use.

[0051] A connecting strut 40 is arranged between the floor swivel joint 14 and the floor swivel joint 15 and serves as a central support surface for the two floor grids 43, 44 in the driving position. In principle, the floor 3 could be folded out to either side. However, this is limited by the connecting strut 40, such that the floor 3, or rather the two floor grids 43, 44, can only be folded to one side. While the arrangement of the connecting strut 40 limits the pivot direction of the floor 3, or the floor grids 43, 44, it makes the floor 3 more load-bearing in the driving position.

[0052] The central floor joint 22 is aligned parallel to the front 4 and parallel to the rear 5 in the driving position. It allows the floor 3 to be folded to one side, enabling the handcart 1 to be stored in a space-saving manner and quickly put into the driving position. The clear definition of the areas supports the functional handling and mechanical robustness of the handcart 1 during use.

[0053] Furthermore, the front 4, rear 5, side walls 6, 7, and floor 3 can be covered, stretched, or otherwise lined with fabric or cloth. This covering can fulfill additional functions such as protection from the elements, stabilization of the structure, or securing transported items. It can be adapted to the individual use of the handcart 1 and increases its versatility.

[0054] The upper edge strut 18, 19 is designed such that it is interrupted in its central section. This interruption creates two separate struts 29, 29.1, each forming one half of the upper edge strut 18, 19. In the transport position, i.e., when the handcart 1 is properly unfolded and ready for use, these struts 29, 29.1 are connected to each other via the upper edge swivel joint 16, 17 and the two X-shaped scissor joints 10, 10.1, 11, 11.1. The separate struts 29, 29.1 are well integrated into the Fig. 2 and Fig. 3 to recognize.

[0055] The connection is made via a specially designed coupling device 25 - see Fig. 11, which couples the two struts 29, 29.1 stably and reliably into the upper edge pivot joint 16, 17. The upper edge struts 18, 19 are interrupted in their central area, but not separated.

[0056] The details are well explained in the Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 to Fig. Figure 9 shows that the two separate struts 29, 29.1 are each connected to each other in the middle via a strut joint 31 so that they can pivot.

[0057] In the transport position, which is achieved when the handcart 1 is folded or collapsed for transport or storage, the arrangement changes. Using the coupling device 25, the two struts 29, 29.1 can be pivotally disengaged from the upper-edge swivel joint 16, 17. The strut joint 31 ensures that the two struts 29, 29.1 remain connected and fold in a defined manner to the other side after disengagement. This swivel mechanism allows the struts 29, 29.1 to be moved to the other side, making the construction more compact and enabling the handcart 1 to be folded in a space-saving manner.

[0058] The coupling device 25 is designed to ensure a firm and secure connection in the driving position, while allowing easy uncoupling and pivoting of the struts 29, 29.1 in the transport position. This design achieves high functionality, as the handcart 1 remains stable in the driving position while simultaneously being easily moved into the transport position. This design contributes to the flexibility and practical handling of the handcart 1 and facilitates both its use and storage.

[0059] The foldable handcart 1 is further distinguished by the fact that the front panel 4 is equipped with a swiveling drawbar 23. This drawbar 23 is designed to be not only functional but also space-saving and flexible. A retaining clip 24 is attached to the front panel 4 for this purpose. The retaining clip 24 allows the drawbar 23 to be releasably secured and then folded away, enabling the handcart 1 to be pulled into its transport position. When not in use, the drawbar 23 can be locked into the retaining clip 24, thus securely stowing it on the front panel 4. This feature ensures that the drawbar does not protrude or obstruct the transport or storage position, making the handcart 1 more compact and easier to handle. The figures show the drawbar 23 in the locked position.

[0060] Another advantage of the drawbar 23 lies in its telescopic design. This allows the drawbar 23 to be extended or shortened as needed, enabling ergonomic adjustment to the user's height or specific operating conditions. The telescopic function significantly contributes to user-friendliness, as it increases both the comfort and versatility of the drawbar 23. Particularly during transport, the drawbar 23 can be retracted so short that it does not protrude, or only minimally protrudes, beyond the receiving basket 2 of the handcart 1.

[0061] Additionally, the drawbar 23 is equipped with a swivel bracket 33 at the front 4, near the base 3. This swivel bracket 33 allows for flexible movement of the drawbar 23. It can be swiveled to assume different positions, whether for pulling the handcart or for space-saving storage. The swivel bracket 33 ensures that the drawbar 23 can be aligned in the optimal position for the respective purpose.

[0062] The combination of the swiveling bracket 33, the telescopic function and the possibility of fixing the pull rod 23 in the retaining clamp 24 makes it a well-designed and practical component of the handcart 1. These features not only ensure high flexibility and adaptability in use, but also space-saving and user-friendly storage when the handcart 1 is not in use.

[0063] The folding handcart 1 is equipped with a fold-down handle 26 located at the rear 5. The handle 26 is designed so that it can be folded either away from the basket 2 or towards it, more precisely towards the rear 5. In the transport position, the handle 26 is folded towards the rear 5, thus saving space. Fig. 1, which represents the driving position, the handle 26 is folded away from the rear 5 to allow comfortable use when pulling or pushing the handcart 1.

[0064] Additionally, the handcart 1 has a handle bracket 34, which is attached to the rear 5 and is height-adjustable. This height adjustment allows the handle 26 to be flexibly adjusted to the desired position. Particularly in the transport position, the handle 26 can be moved to the other side and locked in place thanks to the height adjustability of the handle bracket 34. This prevents the handle 26 from protruding or obstructing the handcart 1 when it is folded.

[0065] The combination of the folding function of handle 26 and the height adjustability of the handle bracket 34 ensures that handle 26 can be optimally positioned in both the driving and transport positions. In the driving position, it offers ergonomic handling, and in the transport position, it contributes to compact and space-saving storage of the handcart 1. This well-designed construction increases the functionality of the handcart 1 and allows for easy adaptation to different requirements and operating conditions.

[0066] The folding handcart 1 is further characterized by the fact that two rear wheels 9, 9.1 are connected to each other via an axle 27 in each of the rear floor corners 13, 13.1. This axle 27 is pivotally attached to the rear 5 of the handcart 1, which allows flexible movement of the rear wheels 9, 9.1. This design allows the handcart 1 to easily adapt to uneven terrain and remain stable in its driving position.

[0067] The two rear wheels 9, 9.1 are additionally spring-mounted against the respective rear floor corners 13, 13.1 via a wheel spring 28. The wheel spring 28 provides effective damping of shocks and vibrations that can occur when pulling or pushing the handcart 1 on uneven surfaces. It not only increases comfort when transporting objects but also protects the transported load from vibrations.

[0068] The combination of the swiveling axle 27 mounting and the spring-loaded rear wheels 9, 9.1 makes the handcart 1 particularly adaptable and robust. This design ensures improved off-road capability and enables comfortable use, even with heavy loads or on difficult terrain. The sophisticated suspension of the axle 27 by means of the wheel spring 28 and the resulting maneuverability contribute significantly to the functionality and versatility of the handcart 1.

[0069] The folding handcart 1 is also characterized by a special design of its front wheels 8, 8.1. The front wheels 8, 8.1 are each arranged in a front base corner 12, 12.1 and equipped with a rotational suspension that allows free and flexible rotation of the front wheels 8, 8.1. This contributes to the maneuverability and easier control of the handcart 1, especially when changing direction or navigating in confined spaces.

[0070] In contrast, the rear wheels 9, 9.1 are rigidly mounted over the axle 27. This rigid connection provides additional stability and ensures that the handcart 1 can be moved safely and straight. The combination of the movable rotary suspension of the front wheels 8, 8.1 and the rigid axle arrangement of the rear wheels 9, 9.1 creates balanced handling characteristics that offer both maneuverability and stability.

[0071] Furthermore, the front wheels 8, 8.1 have a smaller circumference than the rear wheels 9, 9.1. This size difference between the front wheels 8, 8.1 and the rear wheels 9, 9.1 offers the advantage that the rear wheels 9, 9.1 provide greater load-bearing capacity and better off-road capability, while the smaller front wheels 8, 8.1 allow for more precise steering. This is advantageous for the handcart 1, as it optimizes both maneuverability and stability under varying operating conditions.

[0072] In the Fig. Figure 3 clearly shows that the front 4 of the handcart 1 is equipped with a double joint 35 at each of its corner areas facing away from the ground 3, i.e., towards the upper edge struts 18, 19. The double joint 35 is a construction with two pivot devices 41, 42. Thus, the double joint 35 fulfills two functions. It forms the first pivot device 41, which is connected to a leg 47 of one of the X-scissor joints 11, 11.1 of the side wall 7 or one of the X-scissor joints 10, 10.1 of the side wall 6. One of the X-scissor joints is the X-scissor joint 11 or 10, which connects to the front 4. The leg 47 of the X-scissor joint 11 also connects the pivoting device 41 and thus the double joint 35 with the bottom pivot joint 15 of the side wall 7. On the side wall 6, the corresponding leg 47 of the X-scissor joint 10 connects the pivoting device 41 or the double joint 35 with the bottom pivot joint 14.Furthermore, the double joint 35 has a second pivoting device 42, which connects to one of the struts 29, 29.1. One of these struts is strut 29, which is connected to the front 4. This dual pivoting capability enables flexible and stable movement of the components on the front 4 and contributes to the adaptability of the entire structure.

[0073] The rear section 5 is also equipped with a further double joint 35.1. This additional double joint 35.1 also performs two functions. It forms a third pivoting device 41.1, which is connected to one leg 48 of the other X-scissor joint 11, 11.1 of the side wall 7 or the X-scissor joint 10, 10.1 of the side wall 6. The other X-scissor joint is the X-scissor joint 11.1 or 10.1, which is located towards the rear section 5. The leg 48 of the X-scissor joint 11.1 also connects the pivoting device 41.1 and thus the double joint 35.1 to the bottom pivot joint 15 of the side wall 7. On the side wall 6, the corresponding leg 48 of the X-scissor joint 10.1 connects the pivoting device 41.1 or the double joint 35.1 to the bottom pivot joint 14. Furthermore, a fourth pivoting device 42.1 is present, which is part of the further double joint 35.1. The fourth pivoting device 42.1 has a connection to the other strut 29.1. The further strut is strut 29.1, which is arranged towards the rear 5. This arrangement at the rear 5 provides a symmetrical and functional complement to the structure at the front 4.

[0074] The double joints 35 and 35.1, with their pivoting mechanisms 41, 42, 41, 42.1, enable precise movement and flexibility of the struts 29, 29.1 and the X-scissor joints 10, 10.1, 11, 11.1. This mechanism enhances the stability and ease of use of the handcart, both when driving and when transported. The well-designed connection of the X-scissor joints 10, 10.1, 11, 11.1 to the struts 29, 29.1 increases the load-bearing capacity of the handcart 1 while simultaneously ensuring easy handling.

[0075] The Fig. Figure 3 shows a side view of the side wall 7 of the handcart 1. Part of the linkage of the front 4 and the rear 5 can also be seen.

[0076] The linkage of the receiving basket 2, and in particular the linkage of the front 4 and rear 5, is telescopically designed. The linkage has corner tubes 45, each of which is provided with an inner tube 46 slidably arranged within it. The double joints 35, 35.1 are attached to these inner tubes 46 at the front 4 and rear 5, respectively, and are thus vertically displaceable when the inner tube 46 is moved within the corner tube 45. The inner tube 46 is secured in the respective corner tube 45 by suitable locking devices, such as a thread, a rotary lock, a hinged lock, a clamping lock, or the like.

[0077] The Fig. Figure 3 shows the unfolded side wall 7 in driving position and the Fig. Figure 4 shows the same side wall 7 in an intermediate position between driving position and transport position. It is clearly visible how the front 4 and the rear 5 have been moved towards each other, and how the two X-shaped scissor joints 11, 11.1 have also partially moved together. It is also evident that the two struts 29, 29.1 at the strut joint 31 have partially swung away to the other side.

[0078] At the same time, the inner tubes 46 are at least partially extended out of the corner tubes 45, i.e., moved to one side, and with them the double joints 35, 35.1 together with the struts 29, 29.1 and the legs 37, 38 of the X-scissor joints 11, 11.1 which are attached to the double joints 35, 35.1. Thus, the double joints 35, 35.1 remain on almost the same plane as the upper edge pivot joints 16, 17.

[0079] The Fig. Figure 5 shows a further intermediate step in the intermediate position in which the front 4 and the rear 5 have moved even closer together, the two X-shaped scissor joints 11, 11.1 have moved even closer together, and the strut joint 31 and the central floor joint 22 are almost on the same plane. Fig. 6 shows the view from the Fig. 5, which also reveals the other side wall 6 in the same intermediate position. The floor grids 43, 44 of the floor 3 are pivoted to one side. The statements made regarding the side wall 7 of the handcart 1 also apply to the side wall 6 and are not repeated.

[0080] The Fig. 7, Fig. 8 and Fig. Figure 9 shows the transport position of handcart 1. The statements made above regarding the transport position also apply to the Fig. 7, Fig. 8 to Fig. 9, in particular if the same reference numerals were used for the same parts. If only side wall 7 is shown, the corresponding description applies accordingly to side wall 6 and its corresponding components.

[0081] As from the Fig. 7, Fig. 8 to Fig. As can be seen in Figure 9, the inner tubes 46 are almost completely extended out of the corner tubes 45, i.e., moved to one side, and with them the double joints 35, 35.1 together with the struts 29, 29.1 and the legs 37, 38 of the X-scissor joints 11, 11.1 attached to the double joints 35, 35.1. Thus, the front 4 and the rear 5 have been moved even closer together, and the legs 47, 48 of the two X-scissor joints 11, 11.1 have been moved even further together. The central floor joint 22 has crossed the plane of the strut joint 31 in a direction towards one side and is now located in a plane between the upper edge pivot joints 16, 17 and the strut joint 31. The strut joint 31, in turn, is located in a plane between the strut joint 31 and the floor pivot joints 14, 15. It is also evident that the two struts 29, 29.1 at the strut joint 31 have partially pivoted away towards the other side.

[0082] The Fig. Figure 10 shows the two struts 29, 29.1 of the upper edge strut 19 of the side wall 7 from a first side, with the folding handcart 1 in the Fig. 10, Fig. 11 to Fig. 12 is in driving position. The upper edge strut 19 is pressed through and the two X-scissor joints 11, 11.1 are arranged towards the upper edge swivel joint 17. The same applies to the upper edge strut 18 of the side wall 6.

[0083] The Fig. 11 shows the view of the Fig. 10 from an opposite direction. There, the two struts 29, 29.1, which are pivotably connected to each other via the strut joint 31, are received in the coupling device 25 in the driving position.

[0084] Each of the two struts 29, 29.1 incorporates a sliding element 36, which is mounted in such a way that it can move along the struts 29, 29.1. These sliding elements 36 are pressed into a locking position by a strut spring 32, which ensures a secure hold.

[0085] During the opening of the handcart 1, shortly before it reaches the fully open position, the sliding elements 36 are pushed towards the double joints 35, 35.1 by a chamfered rib located on the upper central top-edge swivel joint 16, 17. Once the handcart 1 is fully open, the sliding elements 36 spring back into their locking position.

[0086] The locking position can be released using the external actuating buttons 37, which are connected to the internal sliding elements 36. To enable unlocking, the external actuating buttons 37 must be pressed in the direction of the double joints 35, 35.1.

[0087] This mechanism ensures secure locking in the driving position while simultaneously allowing for easy and convenient unlocking when needed.

[0088] The coupling device 25 is arranged on the upper edge pivot joint 16, 17. This can be, for example, the ribs described above or another locking device. The coupling device 25 serves, in the broadest sense, as a receptacle for the sliding element 36, the sliding element 36 being pre-tensioned by the strut spring 32 in the manner described above in the locking position of the driving position within the struts 29, 29.1.

[0089] In Fig. 12 and Fig. 13 can be clearly seen that on the side of the struts 29, 29.1 facing away from the double joint 35, 35.1 the sliding element 36 protrudes from the respective strut 29, 29.1 with a base edge 38 and a chamfer 39 projecting back from the base edge 38, wherein in driving position the base edge 38 is positioned on the other side in the coupling device 25. Reference symbol list 1 Folding handcart 2 receiving baskets 3 floors 4 Front 5 Rear 6 side walls 7 side wall 8 front wheel 9 rear wheel 10 X-shaped scissor joints 11 X-shaped scissor joints 12 Front floor corner 13 Rear floor corner 14 Floor swivel joint 15 Floor swivel joint 16 Top edge swivel joint 17 Top edge swivel joint 18 Top edge brace 19 Top edge brace 20 Lower edge brace 21 Lower edge brace 22 Floor central joint 23 Pull rod 24 retaining clips 25 Coupling device 26 handle 27 axle 28 Wheel spring 29 Striving 30 Central joint 31 Strut joint 32 strut spring 33 Swivel bracket 34 Handle bracket 35 Double joint 36 sliding elements 37 Actuating button 38 Base edge 39 Slanted 40 Connecting strut 41 Swivel device 42 Swivel device 43 floor grates 44 floor grates 45 corner pipe 46 inner tube 47 thighs 48 thighs

Claims

[1] Folding handcart (1) comprising a receiving basket (2), wherein the receiving basket (2) has a base (3), wherein a front (4), a rear (5) and two side walls (6, 7) project from the base (3) to one side in the driving position, wherein a front wheel (8, 8.1) is arranged at the front (4) in a front base corner (12, 12.1) and a rear wheel (9.1, 9.2) is arranged at the rear (5) in a rear base corner (13, 13.1) projecting to the other side from the base (3), wherein the side walls (6, 7) each consist of at least two X-shaped scissor joints (10, 10.1, 11, 11.1) which are pivotably arranged at the front (4) and at the rear (5), wherein the at least two X-shaped scissor joints (10, 10.1, 11, 11.1) are pivotable relative to each other via a floor pivot joint (14, 15) and a top edge pivot joint (16, 17), wherein the side walls (6, 7) each have a top edge strut (18, 19) extending from the front (4) to the rear (5), wherein the floor (3) is reversibly foldable to one side via a floor central joint (22), wherein the floor central joint (22) is arranged parallel to the front (4) and parallel to the rear (5) in driving position, . characterized bythat the upper edge struts (18, 19) are interrupted in the middle, whereby two struts (29, 29.1) are formed from the upper edge struts (18, 19), which are connected to the upper edge swivel joints (16, 17) in the driving position, wherein in the transport position the two struts (29, 29.1) are detached from the respective upper edge swivel joint (16, 17) and can be pivoted to the other side, wherein the two struts (29, 29.1) are connected to each other in the middle via a respective strut joint (31), wherein the floor (3) has two floor grids (43, 44) pivotably connected to each other via a floor central joint (22), which are reinforced laterally by lower edge struts (20, 21), wherein the floor central joint (22) pivots the floor grids (43, 44) upwards to one side at approximately the middle of the floor (3). are foldable, with each of the two struts (29, 29.1) in driving position with the upper edge swivel joint (16, 17) via a coupling device (25), wherein the two parts are uncoupled from the upper edge swivel joint (16, 17) by means of the coupling device (25) in transport position by means of the coupling device (25) pivoting to the other side, wherein the two struts (29, 29.1) are pivotable to the other side in transport position via a strut joint (31) and are connected to each other centrally. [2] Folding handcart (1) according to claim 1, characterized by , that the front (4) has a pivotably arranged pull rod (23), wherein the pull rod (23) is detachably fixed to a retaining clamp (24). [3] Folding handcart (1) according to any of the preceding claims, characterized by , that the rear (5) has a fold-down handle (26). [4] Folding handcart (1) according to any of the preceding claims, characterized by, that two rear wheels (9, 9.1) are connected via an axle (27), wherein the axle (27) is pivotably arranged at the rear (5) and the two rear wheels (9, 9.1) are resiliently mounted against the respective rear floor corner (13) via a wheel spring (28). [5] Folding handcart (1) according to claim 4, characterized by , that the front wheel (8, 8.1) has a rotary suspension and the rear wheel (9, 9.1) is rigidly arranged by means of the axle (27). [6] Folding handcart (1) according to any of the preceding claims, characterized by , that the front wheel (8, 8.1) has a smaller circumference than the rear wheel (9, 9.1). [7] Folding handcart (1) according to any of the preceding claims, characterized by, that the front (4) forms a double joint (35), wherein the double joint (35) forms a first pivoting device (41) to one of the scissor joints (11) and a second pivoting device (42) to one of the struts (29), and the rear (5) forms a further double joint (35.1), wherein the further double joint (35.1) forms a third pivoting device (41.1) to the other of the scissor joints (11.1) and a fourth pivoting device (42.1) to the further strut (29.1). [8] Folding handcart (1) according to any of the preceding claims, characterized by , that the coupling device (25) is arranged on the upper edge pivot joint (16, 17), wherein the coupling device (25) is designed as a receiving element (36), wherein the sliding element (36) is pre-tensioned by a strut spring (32) in a locking position of the driving position within the struts (29, 29.1). [9] Folding hand truck (1) according to claim 8, characterized by , that the sliding element (36) in intermediate or transport position can be released from the locking position against the force of the strut spring (32) via an actuating button (37). [10] Folding hand truck (1) according to claim 8 or 9, characterized by , that on the side of each of the struts (29, 29.1) facing away from the double joint (35, 35.1) the sliding element (36) projects from the respective strut (29, 29.1) with a base edge (38) and a chamfer (39) projecting back from the base edge (38), wherein in driving position the base edge (38) is positioned on the other side in the coupling device (25). [11] Folding handcart (1) according to any of the preceding claims, characterized by , that the base (3) includes a lower edge strut (20, 21) which extends from the front (4) to the rear (5), wherein the lower edge struts (20, 21) are arranged parallel to the upper edge struts (18, 19). [12] Folding handcart (1) according to any of the preceding claims, characterized by , that a connecting strut (40) is arranged between the floor swivel joint (14) and the floor swivel joint (15).

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