Cart and push handle assembly

Abstract

Provided are a cart (1000) and a push handle assembly. The push handle assembly comprises a push handle rod (1), a connecting base (13), a sliding member (3), front pull rods (4), and a vertical rod (2) configured to be fixed to the cart (1000), wherein the push handle rod (1) is hinged to the connecting base (13), the vertical rod (2) is connected to the connecting base (13), the sliding member (3) is slidably sleeved on the vertical rod (2), two sides of the sliding member (3) are hinged to the front pull rods (4) configured to be connected to two sides of the cart (1000), and the sliding member (3) slides up and down along the vertical rod (2) along with the folding or unfolding of the cart (1000). When the push handle assembly is folded, the connecting base (13) remains stationary, and the front pull rods (4) are folded upwards, thereby preventing the height of a handle from being too large, and the handle does not exceed a frame after being folded, so that the packaging size is greatly reduced.

Description

A cart and a push handle assembly

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202323241633.5 filed with the Chinese Patent Office on November 29, 2023, entitled “A cart and its handle assembly,” the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present disclosure relates to the field of carts, and in particular to a cart and a handle assembly thereof. Background Art

[0004] As a tool for camping and shopping, carts bring great convenience to people's lives. They can be used in places where motor vehicles are inconvenient and are very convenient for transporting items over short distances. Folding carts are especially convenient for storage and portability, saving space at home and making them easier to carry when traveling.

[0005] Traditional folding carts still occupy a large area after being folded, especially the handle. When the cart is folded, the handle is higher than the frame, resulting in a large packaging volume, which increases transportation costs and reduces convenience. Summary of the Invention

[0006] The present disclosure provides a cart handle assembly, which occupies a small volume when folded. The present disclosure provides a cart.

[0007] The embodiments of the present disclosure may be implemented as follows:

[0008] An embodiment of the present disclosure provides a cart handle assembly, which includes a handle rod, a connecting seat, a sliding member, a front pull rod and a vertical rod configured to be fixed to the cart, the handle rod is hinged on the connecting seat, the vertical rod is connected to the connecting seat, the sliding member is slidably mounted on the vertical rod, and the two sides of the sliding member are hinged with front pull rods configured to be connected to the two sides of the cart, and the sliding member slides up and down along the vertical rod as the cart is folded or unfolded.

[0009] Optionally, when the cart is in the expanded state, at least a portion of the sliding member is located in the connecting seat, and the position of the sliding member is higher than the wheel assembly; when the cart is in the folded state, the sliding member is detached from the connecting seat, and the position of the sliding member is higher than the wheel assembly.

[0010] Optionally, the lower end of the push handle rod is hinged to the front of the connecting seat, and the lower end of the vertical rod is fixed to the rear of the connecting seat.

[0011] Optionally, the connecting seat includes a hinge seat and a connecting piece arranged at the front and rear, and the connecting piece is in the shape of a groove to facilitate the engagement of the sliding member.

[0012] Optionally, part of the vertical rod is located in the groove of the connecting piece, and the vertical rod is connected to the groove bottom of the connecting piece.

[0013] Optionally, the hinge seat and the connecting piece are integrally formed or welded.

[0014] Optionally, the push handle rod is a multi-end telescopic sleeve structure.

[0015] An embodiment of the present disclosure also provides a cart having an unfolded state and a folded state, comprising a side cross assembly, a front and rear cross assembly, a plurality of vertical rods, a plurality of wheel assemblies arranged at the lower parts of the corresponding vertical rods, and a bottom folding frame connected between all the vertical rods, wherein the four vertical rods are connected to form a frame through the side cross assembly and the front and rear cross assembly, and the feature is that a push handle assembly as described above is provided on the front and rear cross assembly at the front of the cart.

[0016] Optionally, the two ends of the front and rear cross components are respectively connected to the two vertical rods, and the front and rear cross components include one or more groups of X-shaped folding rods hinged to each other, and the upper end of the vertical rod is connected to the hinge point of one group of the X-shaped folding rods, or the upper end of the vertical rod is connected to one of the hinge points at the connection of any two adjacent groups of X-shaped folding rods.

[0017] Optionally, a sliding connection block is sleeved on the vertical rod, and a top connection block is also fixed to the top of the vertical rod, and the two ends of the front and rear cross components are hinged to the top connection blocks and the sliding connection blocks on the two vertical rods respectively.

[0018] Optionally, a lower connecting block is fixed on the vertical rod, and the bottom folding frame is an X-shaped hinged rod assembly, which includes a bottom tube and a bottom connecting piece. One end of the four bottom tubes is hinged to the bottom connecting piece, and the other end is hinged to the lower connecting blocks on the four vertical rods.

[0019] Optionally, one end of the two front pull rods is hinged to both sides of the sliding member respectively, and the other end is hinged to the lower connecting blocks of the two front vertical rods respectively, and the two front pull rods have the same length.

[0020] Optionally, the vertical rod is a telescopic rod structure.

[0021] Compared with the prior art, the advantages of the embodiments of the present disclosure include, for example:

[0022] When the push handle assembly disclosed herein is folded, the connecting seat remains stationary and the front pull tube is folded upward, which helps to prevent the handle from being too high and greatly reduces the packaging volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0024] FIG1 is a schematic diagram of the overall structure of the present disclosure (in an expanded state);

[0025] FIG2 is a schematic diagram of the overall structure of the present invention (semi-folded state);

[0026] FIG3 is a schematic diagram of the overall structure of the present invention (fully folded state).

[0027] The accompanying drawings are marked as follows: 100, vertical rod; 110, lower connecting block; 200, front and rear cross components; 210, X-shaped folding rod; 300, side cross component; 400, top connecting block; 500, sliding connecting block; 600, bottom folding frame; 610, X-shaped intersection rod assembly; 611, bottom tube; 612, bottom connecting member; 700, wheel assembly; 900, frame; 1000, cart; 1, push handle; 11, hinged seat; 12, connecting plate; 13, connecting seat; 2, vertical rod; 3, sliding member; 4, front pull rod. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, but not all of them. Generally, the components of the embodiments of the present disclosure described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the present disclosure as claimed, but merely represents selected embodiments of the present disclosure. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present disclosure without creative effort shall fall within the scope of protection of the present disclosure.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0031] In the description of the present disclosure, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0032] In addition, the terms "first", "second", "third", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0033] Furthermore, the use of terms such as "horizontal," "vertical," and "overhanging" does not necessarily imply that the component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0034] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0035] It should be noted that, in the absence of conflict, the features in the embodiments of the present disclosure can be combined with each other. The present disclosure will be further described below with reference to the accompanying drawings and embodiments:

[0036] As shown in Figures 1 to 3, a cart 1000 has an unfolded state and a folded state, including a side cross assembly 300, a front and rear cross assembly 200, a plurality of vertical rods 100, a plurality of wheel assemblies 700 arranged at the lower part of the corresponding vertical rods 100, and a bottom folding frame 600 connected between all the vertical rods 100. The four vertical rods 100 are connected to form a frame 900 through the side cross assembly 300 and the front and rear cross assembly 200. A push handle assembly is provided on the front and rear cross assembly 200 at the front of the cart 1000.

[0037] The push handle assembly includes a push handle rod 1, a connecting seat 13, a sliding member 3, a front pull rod 4 and a vertical rod 2 configured to be fixed to the cart. The push handle rod 1 is a multi-section telescopic sleeve structure, which is convenient for users of different heights to extend or shorten the push handle rod 1 so as to select a suitable length for use. The lower end of the push handle rod 1 is hinged to the front of the connecting seat 13, and the lower end of the vertical rod 2 is fixed to the rear of the connecting seat 13. The sliding member 3 is slidably mounted on the vertical rod 2, and the two sides of the sliding member 3 are hinged with a front pull rod 4 configured to be connected to the two sides of the cart 1000. The sliding member 3 engages or separates with the connecting seat 13 as the cart 1000 is expanded or collapsed.

[0038] It should be noted that there are two front pull rods 4, each hinged to one side of member 3. Furthermore, in the operating state, the lower end of the upright 2 is relatively close to the wheel of the cart, while the upper end of the upright 2 is relatively far from the wheel. The sliding member 3 can slide vertically along the upright 2 in different states. The fixing relationship between the upright 2 and the connecting seat 13 includes, but is not limited to, integral molding, welding, bonding, and snap-fit ​​connection.

[0039] Alternatively, the wheel assemblies 700 can be arranged in a one-to-one correspondence with the vertical rods 100 to ensure a support effect. In addition, to ensure the support effect of the entire cart 1000, the number of vertical rods 100 is four, and the four vertical rods 100 are distributed at the four corners of the cart 1000 when it is in the unfolded state.

[0040] The specific structure of the connecting seat 13 is as follows: it includes a front-to-back hinge seat 11 and a connecting plate 12. The connecting plate 12 is recessed to facilitate engagement with the slider 3. The connecting plate 12 and the hinge seat 11 can be integrally formed or welded together. When the front pull rod 4 and the slider 3 engage within the connecting plate 12, the connecting plate 12 reinforces the connecting rod and the front pull rod 4, enhancing the overall connection strength. The upright pole 2 is partially located within the recess of the connecting plate 12, and the upright pole 2 is fixedly connected to the bottom of the recess of the connecting plate 12.

[0041] It should be noted that the front-to-back direction of the connecting seat 13 can be understood as the front-to-back direction of the cart 1000, that is, the forward or backward direction when force is applied to the cart 1000.

[0042] When folding the cart 1000, the slider 3 can slide upward along the vertical rod 2, disengaging the connecting piece 12 and positioning the slider 3 higher than the wheel assembly 700. The connecting seat 13 remains stationary, and the front pull tube 4 folds upward, which helps prevent the handle from being too high and significantly reduces the packaging volume. When the cart 1000 is unfolded, the slider 3 can slide downward along the vertical rod, with at least a portion of the slider 3 located within the groove of the connecting piece 12 and positioning the slider 3 higher than the wheel assembly 700. When the cart 1000 is unfolded, the front pull rod 4 slides downward, and the slider 3 and the front pull rod 4 slide to the connecting seat 13 and engage with the connecting seat 13, ensuring the strength of the handle assembly.

[0043] In this embodiment, a sliding connection block 500 is sleeved on the vertical rod 100, and a top connection block 400 is fixed to the top of the vertical rod 100. The ends of the side cross assembly 300 and the front and rear cross assembly 200 are respectively hinged to the top connection block 400 and the sliding connection block 500 on the corresponding two vertical rods 100. Optionally, the top connection block 400 can also be used to limit the sliding connection block 500, and a fixed connection block can be provided on the vertical rod 100 below the sliding connection block 500. Then, the ends of the side cross assembly 300 and the front and rear cross assembly 200 are respectively hinged to the sliding connection block 500 and the fixed connection block on the corresponding two vertical rods 100.

[0044] Alternatively, the vertical rods 100 may be telescopic rods, so that the two interlocking rods can slide relative to each other, meeting the requirements of the folded and unfolded states of the side cross assemblies 300 and the front and rear cross assemblies 200. The two telescopic tubes are respectively provided with fixed connection blocks, and the ends of the side cross assemblies 300 and the front and rear cross assemblies 200 are respectively hinged to the fixed connection blocks on the corresponding two vertical rods 100.

[0045] The side cross assembly 300 includes one or more groups of mutually hinged X-shaped folding rods. One group of X-shaped folding rods has a simple structure and is easy to produce and install; multiple groups of X-shaped folding rods can increase the overall length of the cart and increase its volume.

[0046] The front and rear cross components 200 include one or more groups of mutually hinged X-shaped folding rods 210. At the same time, in order to ensure that the push handle assembly is located in the middle of the two vertical rods 100 at the front of the cart 1000, so as to facilitate the folding and unfolding of the cart 1000 as a whole, the lengths of the two front pull rods 4 are kept the same, and when the number of X-shaped folding rods 210 is an odd number, the upper end of the vertical rod 2 is fixed to the hinge point of the middle group of X-shaped folding rods 210; when the number of X-shaped folding rods 210 is an even number, the upper end of the vertical rod 2 is fixed to the hinge point of the two middle groups of X-shaped folding rods 210. 0 connection is fixed, that is, when the upper height of one end of the front and rear cross components 200 is fixed, the upper hinge point of the connection between the vertical pole 22 and the two sets of X-shaped folding rods 10 in the middle is fixed; when the lower height of one end of the front and rear cross components 200 is fixed, the lower hinge point of the connection between the vertical pole 2 and the two sets of X-shaped folding rods 210 in the middle is fixed; in this way, no matter how many sets of X-shaped folding rods the front and rear cross components 200 have, it can be ensured that the height of the entire push handle assembly does not change with the expansion and contraction of the front and rear cross components 200, which is conducive to reducing the volume of the cart when it is folded.

[0047] A lower connecting block 110 is also fixed to the vertical rod 100. The bottom folding frame 600 is an X-shaped hinged rod assembly 6106, which includes a bottom tube 611 and a bottom connecting member 612. One end of each of the four bottom tubes 611 is hinged to the bottom connecting member 612, and the other end is hinged to the lower connecting blocks 110 on the four vertical rods 100. One end of the two front pull rods 4 is hinged to the two sides of the sliding member 3, and the other end is hinged to the lower connecting blocks of the two front vertical rods 100.

[0048] It is worth noting that the fixing methods of the lower connecting block 110 and the vertical rod 100 include but are not limited to: integral molding, welding, bonding, and snap connection. The number of the lower connecting blocks 110 is also four, and they are arranged in a one-to-one correspondence with the four vertical rods 100.

[0049] When the cart 1000 is opened, the front rod 4 and the slider 3 slide downward along the vertical rod 2 into the groove of the connecting piece 12 to increase strength. When the cart 1000 is folded, the bottom connecting piece in the middle of the bottom folding frame is pulled upward, the cart 1000 is folded, and the slider 3 slides upward within the vertical rod 2. At the same time, the slider 3, the front rod 4, and the connecting piece 12 are separated, and the cart 1000 is finally folded into a bundle.

[0050] The present invention realizes the purpose of reducing the packaging volume by folding and separating the connecting piece 13, the front pull rod 4 and the sliding piece 3 of the cart 1000, and increasing the connection strength by opening and closing the connecting piece 12, the front pull rod 4 and the sliding piece 3 through the movable design of the connecting piece 12, the front pull rod 4 and the sliding piece 3 in the connecting seat 13.

[0051] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0052] Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limiting the present disclosure. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present disclosure without departing from the principles and purpose of the present disclosure. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present disclosure are still within the scope of the technical solution of the present disclosure. Industrial Applicability

[0053] When the push handle assembly is folded, the connecting seat can be kept stationary and the front pull tube can be folded upward, which is beneficial to prevent the handle from being too high and greatly reduces the packaging volume.

Claims

1. A cart handle assembly, characterized in that: The invention comprises a push handle rod (1), a connecting seat (13), a sliding member (3), a front pull rod (4) and a vertical rod (2) configured to be fixed to a cart (1000), wherein the push handle rod (1) is hinged on the connecting seat (13), the vertical rod (2) is connected to the connecting seat (13), the sliding member (3) is slidably mounted on the vertical rod (2), and the two sides of the sliding member (3) are hinged with a front pull rod (4) configured to be connected to the two sides of the cart (1000), and the sliding member (3) slides up and down along the vertical rod (2) as the cart (1000) is folded or unfolded.

2. A cart handle assembly according to claim 1, characterized in that: When the cart (1000) is in an unfolded state, at least a portion of the sliding member (3) is located in the connecting seat (13), and the position of the sliding member (3) is higher than the wheel assembly (700); when the cart (1000) is in a folded state, the sliding member (3) is detached from the connecting seat (13), and the position of the sliding member (3) is higher than the wheel assembly (700).

3. The push handle assembly of a push cart according to claim 1, characterized in that: The lower end of the push handle rod (1) is hinged to the front part of the connecting seat (13), and the lower end of the vertical rod (2) is fixed to the rear part of the connecting seat (13).

4. The cart handle assembly according to claim 1, characterized in that: The connecting seat (13) comprises a hinge seat (11) and a connecting piece (12) arranged at the front and rear, and the connecting piece (12) is in the shape of a groove for facilitating the engagement of the sliding member (3).

5. A cart handle assembly according to claim 4, characterized in that: Part of the vertical rod (2) is located in the groove of the connecting plate (12), and the vertical rod (2) is connected to the groove bottom of the connecting plate (12).

6. A cart handle assembly according to claim 4, characterized in that: The hinge seat (11) and the connecting piece (12) are integrally formed or welded.

7. The cart handle assembly according to claim 1, characterized in that: The push handle rod (1) is a multi-end telescopic sleeve structure.

8. A cart having an unfolded state and a folded state, comprising a side cross assembly (300), a front and rear cross assembly (200), a plurality of vertical rods (100), a plurality of wheel assemblies (700) arranged at the lower part of the corresponding vertical rods (100), and a bottom folding frame (600) connected between all the vertical rods (100), wherein four of the vertical rods (100) are connected to form a frame (900) through the side cross assembly (300) and the front and rear cross assembly (200), characterized in that: The front and rear cross assembly (200) at the front of the cart (1000) is provided with a handle assembly as claimed in any one of claims 1 to 7.

9. A cart according to claim 8, characterized in that: The two ends of the front and rear cross components (200) are respectively connected to the two vertical rods (100), and the front and rear cross components (200) include one or more groups of mutually hinged X-shaped folding rods (210), and the upper end of the vertical rod (2) is connected to the hinge point of one group of the X-shaped folding rods (210), or the upper end of the vertical rod (2) is connected to one of the hinge points at the connection of any two adjacent groups of the X-shaped folding rods (210).

10. A cart according to claim 8, characterized in that: A sliding connection block (500) is sleeved on the vertical rod (100), and a top connection block (400) is also fixed on the top of the vertical rod (100), and the two ends of the front and rear cross components (200) are respectively hinged to the top connection blocks (400) and the sliding connection blocks (500) on the two vertical rods (100).

11. A cart according to claim 8, characterized in that: A lower connecting block (110) is also fixed on the vertical rod (100); the bottom folding frame (600) is an X-shaped hinged rod assembly (610); the X-shaped hinged rod assembly (610) comprises a bottom tube (611) and a bottom connecting member (612); one end of the four bottom tubes (611) is hinged on the bottom connecting member (612), and the other end is hinged to the lower connecting blocks on the four vertical rods (100).

12. A cart according to claim 11, characterized in that: One end of the two front pull rods (4) is respectively hinged to the two sides of the sliding member (3), and the other end is respectively hinged to the lower connecting blocks of the two front vertical rods (100), and the two front pull rods (4) have the same length.

13. The cart according to claim 8, characterized in that: The vertical rod (100) is a telescopic rod structure.

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