Folding cart with good bearing performance

Abstract

The utility model discloses a folding cart with good bearing performance, which comprises a folding frame, a main connecting piece and an expansion connecting piece, the folding frame is a trailer rear opening type frame body, the front side and the rear side of the folding frame are respectively provided with a telescopic handle and a folding push handle, the folding frame comprises a bottom folding frame and a side folding frame arranged on the bottom folding frame, and the main connecting piece is connected with the main connecting piece. Wherein the bottom folding frame and the side folding frames are formed by hinging a plurality of crossed supporting rods, the adjacent crossed supporting rods on the bottom folding frame and the side folding frames are connected through main connecting pieces, and the crossed supporting rods at the upper ends of the side folding frames are connected through expansion connecting pieces. And key structural components such as the load-bearing hinge seat are adopted, so that the folding cart has high load-bearing capacity and can meet the transportation requirements of heavy-weight articles. According to the utility model, the expansion connecting piece, the adjusting function and the load-bearing strengthening design are added in the folding cart design, so that the multifunctionality, the load-bearing capacity and the stability of the product are obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of folding pull cart, specifically to a folding pull cart with good load bearing. BACKGROUND

[0002] With the improvement of people's daily life level, convenient and functional tool products gradually become the necessary items of modern home and outdoor activities. Among various transportation and storage tools, folding pull carts are widely welcomed due to their portability, easy to carry and store characteristics, especially in outdoor sports, shopping, moving, tourism and other occasions, folding pull carts provide great convenience. However, the existing folding pull carts have certain limitations in load bearing, stability and functionality, which cannot meet some special needs, such as structural deformation when carrying heavy objects, or cannot meet the temporary change into a table, storage rack and other multi-functional needs.

[0003] At present, folding pull carts on the market are usually only single transportation tools, lack of adjustable multifunctionality, and cannot provide sufficient load bearing support, especially when heavy objects need to be carried or used as a temporary table, often unstable or insufficient load bearing. In addition, some accessories in existing products have simple design, lack of flexibility and personalized customization space, and cannot meet the specific needs of different users.

[0004] Therefore, how to design a folding pull cart with excellent load bearing capacity and multi-functional expandability has become an important direction of current technical development. INVENTION CONTENTS

[0005] The utility model aims at providing a folding pull cart with good load bearing, which significantly improves the multifunctionality, load bearing capacity and stability of the product by adding expansion connectors, adjustment functions and load bearing reinforcement design in the folding pull cart design.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a folding pull cart with good load bearing, comprising a folding frame, a main connector and an expansion connector, wherein the folding frame is a drag behind open type frame body, the front side and the rear side of the folding frame are respectively provided with telescopic handles and folding push handles, the folding frame comprises a bottom folding frame and a side folding frame arranged on the bottom folding frame, wherein the bottom folding frame and the side folding frame are both hinged by a plurality of cross struts, the cross struts on the bottom folding frame and the side folding frame are connected by the main connector, and the cross struts on the upper end of the side folding frame are connected by the expansion connector. By designing the bottom folding frame and the side folding frame with cross struts, and adopting load bearing hinge seats and other key structural components, the folding pull cart has strong load bearing capacity, can meet the transportation needs of heavy objects, and the folding structure still maintains stability and firmness.

[0007] Preferably, the expansion connector includes a load-bearing hinge seat, a hand screw bolt, an extension column and a pipe clamp, wherein the bottom opening of the load-bearing hinge seat is arranged in a U shape. The pipe clamp in the expansion connector not only supports and fixes the egg roll plate, but also converts the folding cart into a table. This design gives the folding cart more uses, meets the needs of users in different scenarios, and increases the applicability of the product. The expansion connector uses load-bearing hinge seats, extension columns and pipe clamps, and the design of these components ensures that the overall structure remains stable even if the user sits on the egg roll plate and does not collapse. The U-shaped opening design of the load-bearing hinge seat further enhances the connection strength, making the overall structure more stable. Through the combination of load-bearing hinge seats and extension columns, the stability of the folding cart is greatly improved, and even under heavy load, there is no deformation or damage, ensuring the long service life of the product.

[0008] Preferably, the inside of the opening on both sides of the load-bearing hinge seat is connected to the upper end of the multiple cross struts of the side folding frame, and a screw groove is arranged in the middle of the load-bearing hinge seat.

[0009] Preferably, the hand screw bolt is arranged on the load-bearing hinge seat, and the hand screw bolt includes a connecting stud and a hand screw knob, wherein the lower end of the connecting stud extends into the screw groove, the hand screw knob is arranged in the middle of the connecting stud, and the top of the connecting stud passes through the hand screw knob. Due to the design of the hand screw bolt, the user can fix the extension column without additional tools. This design is simple and easy to understand, especially suitable for occasions that require quick transformation or adjustment of the cart shape, and facilitates the operation of various users.

[0010] Preferably, the extension column is supported on the load-bearing hinge seat, the bottom of the extension column is provided with a deep screw groove matched with the top of the connecting stud, and the upper end of the extension column is movably connected to the pipe clamp through a rotating disc. Through the height adjustment of the extension column, the folding cart can be transformed from a common cart into an adjustable height table. This design not only enhances the multifunctionality of the product, but also meets the various needs of users in different periods and different environments. After the extension column is fixed by the hand screw bolt, it can provide stable support to ensure that the overall structure remains firm after the egg roll plate is raised and does not tilt or become unstable. The adjusted extension column can support heavy objects while maintaining structural stability, avoiding collapse caused by heavy load.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] The utility model adds expansion connectors, adjustment functions and load-bearing reinforcement design in the design of the folding cart, which significantly improves the multifunctionality, load-bearing capacity and stability of the product.

[0013] The specific technical effects include the following:

[0014] The utility model discloses a folding cart is converted into a tool with the function of a table through the design of the expansion connecting piece. The expansion piece can be fixed to the egg roll plate through the pipe clamp, and the folding cart is quickly converted into a temporary table top, greatly expanding the use scene of the product. In addition, the cross support and the load-bearing hinge seat are used, which ensures that the folding cart can remain stable when carrying heavy objects. In particular, the load-bearing hinge seat, the telescopic column and the pipe clamp in the expansion connecting piece are designed to improve the stability of the folding cart, prevent collapse or deformation caused by excessive weight, and enhance the load-bearing capacity of the product.

[0015] The adjustment function of the telescopic column allows users to adjust the height of the egg roll plate as needed, realize personalized needs, and quickly install the telescopic column through hand-tightening bolts.

[0016] The sliding connection design of the expansion piece and the load-bearing hinge seat ensures that the expansion piece can be stably fixed during use and will not loosen or slip due to external forces. At the same time, the cooperation of the adjusting bolt and the locking nut allows the expansion piece to be firmly locked in the desired position after adjustment. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic view of the utility model for installing an egg roll plate;

[0018] Figure 2 is a schematic view of the overall structure of the utility model;

[0019] Figure 3 is a schematic view of the structure of the expansion connecting piece in embodiment 1 of the utility model;

[0020] Figure 4 is a schematic view of the structure of the expansion connecting piece in embodiment 2 of the utility model.

[0021] In the figure: 1, bottom folding frame; 2, side folding frame; 3, telescopic handle; 4, folding push handle; 5, main connecting piece; 6, expansion connecting piece; 601, load-bearing hinge seat; 602, hand-tightening bolt; 603, telescopic column; 604, pipe clamp; 605, inclined surface. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] In the description of the utility model, it needs to explain, the term "vertical", "upper", "lower", "horizontal" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation structure and operation, therefore cannot be understood as the limitation of the utility model.

[0024] In the description of the utility model, it also needs to explain, unless otherwise specified and limited, the term "set", "installation", "connected", "connection" should be broad understanding, for example, can be fixed connection, can be detachable connection, or integrally connected, can be mechanical connection, can be electrical connection, can be directly connected, can be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the above-mentioned terms can be understood according to the specific meaning of the utility model.

[0025] Please refer to Figures 1-2 The utility model provides a kind of technical scheme: a folding cart with good load-bearing, including folding frame, main connecting piece 5 and expansion connecting piece 6.

[0026] In the embodiment, folding frame is the frame body of drag behind open type, and the front side and rear side of folding frame are respectively provided with telescopic handle 3 and folding push handle 4, and folding frame includes bottom folding frame 1 and side folding frame 2 arranged on bottom folding frame 1, wherein bottom folding frame 1 and side folding frame 2 are both hinged by multiple cross struts, and the cross struts on bottom folding frame 1 and side folding frame 2 are connected by main connecting piece 5, and the cross struts on the upper end of side folding frame 2 are connected by expansion connecting piece 6, by designing bottom folding frame 1 and side folding frame 2 with cross struts and using load-bearing hinge seat 601 and other key structural components, the folding cart has strong load-bearing capacity, can meet the transportation demand of heavy goods, and the folding structure can still maintain stability and firmness.

[0027] Example 1: please refer to Figure 1 , Figure 3In this embodiment, the expansion connector 6 includes a load-bearing hinge seat 601, a hand screw 602, an extension column 603, and a pipe clamp 604. The bottom of the load-bearing hinge seat 601 is designed with a U-shaped opening. The pipe clamp 604 in the expansion connector 6 not only supports and fixes the egg roll plate, but also converts the folding cart into a table. This design gives the folding cart more uses, meets the needs of users in different scenarios, and increases the applicability of the product. The expansion connector 6 uses a load-bearing hinge seat 601, an extension column 603, and a pipe clamp 604, and the design of these components ensures that even if the user sits on the egg roll plate, the overall structure remains stable and does not collapse. The U-shaped opening design of the load-bearing hinge seat 601 further enhances the connection strength, making the overall structure more stable. Through the combination of key components such as the load-bearing hinge seat 601 and the extension column 603, the stability of the folding cart is greatly improved, and even under heavy load, there is no deformation or damage, ensuring the long-term service life of the product.

[0028] In this embodiment, the load-bearing hinge seat 601 has a U-shaped opening at the bottom, and the two sides of the opening are connected to the upper end of the multiple cross-braces of the side folding frame 2. A screw groove is provided in the middle of the load-bearing hinge seat 601.

[0029] In this embodiment, the hand screw 602 is provided on the load-bearing hinge seat 601. The hand screw 602 includes a connecting stud and a hand screw knob. The lower end of the connecting stud extends into the screw groove, the hand screw knob is provided in the middle of the connecting stud, and the top of the connecting stud passes through the hand screw knob. Due to the design of the hand screw 602, users can fix the extension column 603 without additional tools. This design is simple and easy to understand, especially suitable for situations that require quick transformation or adjustment of the cart shape, making it convenient for various users to operate.

[0030] In this embodiment, the extension column 603 is supported on the load-bearing hinge seat 601. The bottom of the extension column 603 is provided with a deep screw groove matched with the top of the connecting stud, and the upper end of the extension column 603 is movably connected to the pipe clamp 604 through a rotating disc. Through the height adjustment of the extension column 603, the folding cart can be transformed from a common cart to an adjustable height table. This design not only enhances the multifunctionality of the product, but also meets the various needs of users in different periods and different environments. After the extension column 603 is fixed by the hand screw 602, it can provide stable support to ensure that the overall structure remains firm after the egg roll plate is raised, and does not tilt or become unstable. The adjusted extension column 603 can maintain structural stability while carrying heavy objects, avoiding collapse due to heavy load.

[0031] Embodiment 2: Please refer to Figure 1 , Figure 4The oblique surface 605 extending upwardly in the opening on both sides of the load-bearing hinged seat 601 can abut against the cross strut when the cross strut is connected.

[0032] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A folding trolley with good load-bearing capacity, characterized in that, It includes a folding frame, a main connector (5) and an extension connector (6). The folding frame is a rear-opening frame with a trailer. The front and rear sides of the folding frame are respectively equipped with telescopic handles (3) and folding push handles (4). The folding frame includes a bottom folding frame (1) and a side folding frame (2) on the bottom folding frame (1). The bottom folding frame (1) and the side folding frame (2) are both hinged together by multiple cross supports. The cross supports on the bottom folding frame (1) and the side folding frame (2) are connected by the main connector (5). The cross supports at the upper end of the side folding frame (2) are connected by the extension connector (6).

2. A folding trolley with good load-bearing capacity according to claim 1, characterized in that: The extension connector (6) includes a load-bearing hinge seat (601), a hand-tightening bolt (602), a telescopic column (603), and a pipe clamp (604). The bottom opening of the load-bearing hinge seat (601) is U-shaped. The inner sides of the openings on both sides of the load-bearing hinge seat (601) are connected to multiple cross support rods at the upper end of the side folding frame (2). The load-bearing hinge seat (601) is provided with a screw groove in the middle.

3. A folding trolley with good load-bearing capacity according to claim 2, characterized in that: The hand-tightening bolt (602) is provided on the load-bearing hinge seat (601). The hand-tightening bolt (602) includes a connecting stud and a hand-tightening knob. The lower end of the connecting stud extends into the threaded groove, the hand-tightening knob is provided in the middle of the connecting stud, and the top of the connecting stud passes through the hand-tightening knob.

4. A folding trolley with good load-bearing capacity according to claim 2, characterized in that: The telescopic column (603) is supported on the load-bearing hinge seat (601). The bottom of the telescopic column (603) is provided with a deep threaded groove that mates with the top of the connecting stud. The upper end of the telescopic column (603) is connected to the pipe clamp (604) via a turntable.

5. A folding trolley with good load-bearing capacity according to claim 2, characterized in that: The load-bearing hinge seat (601) has upwardly extending inclined surfaces (605) in the openings on both sides.

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