Foldable Support Frame

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims the benefit of Chinese Patent Application No. 2025201480739 filed on Jan. 22, 2025, the contents of which are hereby incorporated by reference.

TECHNICAL BACKGROUND

The support frame is mainly used to support objects and keep them in a specific position and state. It can withstand the weight, pressure or other external forces of the objects to prevent the objects from deforming, collapsing or shifting. In daily life, the support frame is mainly used to support furniture such as beds, sofas or chairs.

However, a conventional support frame occupies a large space and is inconvenient for users to transport and store. Currently, there are two common solutions to solve this problem.

First, disassemble the support frame into multiple small-sized parts to make it convenient to transport or store. However, the disassembly structures currently available on the market have complicated parts, and there are many disassembly steps, and it takes users much disassembly time to disassemble. In addition, some parts may get lost after disassembly which cause new troubles to users;

Second, the large-sized support frame is designed to be foldable to make it easy to store and transport. However, the existing folding structure is relatively complicated, and it is inconvenient and troublesome for users to have it folded or unfolded.

INVENTION CONTENT

In order to overcome the defects of the existing technology, the present invention provides a foldable support frame, and it can be quickly folded and unfolded, which improves users' experience.

The technical scheme adopted by the present invention for solving the technical problems is as follows:

A foldable support frame includes four support columns, two internal support components and two load-bearing components. One load-bearing component includes a [ shape top rod and an I shape side support rod. Two ends of one [ shape top rod are movably connected to the support columns, and the two [ shape top rods components are movably connected via a first hinge on middle. The four support columns are first support column, second support column, third support column and fourth support column. The first support column and the second support column are movably connected through one internal support component, and the third support column and the fourth support column are movably connected through another internal support component. The first support column and the third support column are connected through one side support rod, the second support column and the fourth support column are connected through another side support rod.

Further, two ends of each [ shape top rod are hinged to the support columns, and the two [ shape top rods are hinged by the first hinge on middle.

Further, a first groove is arranged on the top side of a support column, a first placement hole is arranged on the side wall of a first groove. A first block adapted to a first groove is arranged at an end of the top rod, and the first block is embedded in the first groove and is rotatably connected through a first rotary shaft.

Further, two groups of internal support components are provided, and the two groups of the internal support components respectively comprise two internal support rods and two connection rods. One end of the connection rod is rotatably connected to the bottom side of the support column, and other end of the connection rod is connected to the internal support rod. The two internal support rods of the two groups of the internal support components are connected by a second hinge.

Further, a second groove is arranged on the bottom side of the support column. A second placement hole is respectively arranged on the upper and lower sides of the second groove. A second block adapted to the second groove is arranged at one end of the connection rod away from the internal support rod, and the second block is embedded in the second groove and is rotatably connected through a second rotary shaft.

Further, the support frame includes four diagonal support ribs, and two ends of each diagonal support rib are respectively connected to one side support rod and one support column.

Further, the support frame also includes four first rib reinforcements, and each first rib reinforcement configured as a triangular shape. Two edges of each first rib reinforcement are respectively connected to one support column and one side support rod.

Further, the support frame also includes four second rib reinforcements, and two edges of one second rib reinforcement are respectively connected to one connection rod and one internal support rod.

Further, the connection rod is a square tube with a cross-section of 20 mm*20 mm, a thickness of 2 mm, and a length of 375 mm. The internal support rod is a square tube with a cross-section of 20 mm*20 mm, a thickness of 2 mm, and a length of 375 mm.

Further, a circular ring with a length of 25 mm, an outer diameter of 21.3 mm and an inner diameter of 8 mm is welded on the top side of the internal support rod.

The beneficial effects of the present invention:

The present invention provides a foldable support frame, which includes movably connected top rods, support columns and internal support components. The support frame can be quickly folded and unfolded to offer users a better use experience. When users have the foldable support frame folded, the two load-bearing components of the support frame are completely overlapped. In this way, the foldable frame is smaller and more convenient for users to store. In addition, with a cooperation of the internal support rods and the top rods, the foldable frame achieves a self-locking function to ensure that the structure of the support frame is stable in unfolded state and has a better supporting effect.

DESCRIPTION OF FIGURES

FIG. 1 is a schematic view of a support frame of the present invention;

FIG. 2 is a schematic view of the support frame of the present invention from another angle;

FIG. 3 is an exploded view of the support frame of the present invention;

FIG. 4 is a schematic view of the support frame of the view in a folded state;

DESCRIPTION OF MARKS IN FIGURES

1—support frame; 11—first support column; 12—second support column; 13—third support column; 14—fourth support column; 15—first groove; 151—first placement hole; 16—second groove; 161—second placement hole;

2—internal support component; 21—internal support rod; 22—connection rod; 221—second block; 222—second rotary shaft; 23—second hinge;

3—load—bearing component; 31—top rod; 311—first block; 312—first rotary shaft; 32—side support rod; 33—first hinge;

4—diagonal support rib; 5—first rib reinforcement; 6—second rib reinforcement.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Below is a further detailed description of the present invention based on the figures.

The present embodiment only shows an explanation of the present invention, and it is not a limitation to the present invention. The skilled in the art can make modifications to this embodiment as needed without making any creative contributions after reading this specification, which are always protected by the patent law as long as they are within the scope of the claims of the present invention.

It should be noted that when an element is called as being “fixed to” or “arranged on” another element, it can be directly on the other element or indirectly on the other element. When an element is called as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

It should be noticed that the terms “length”, “width”, “above”, “below”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” which indicates the orientations or positional relationships are based on the orientations or positional relationships shown in the figures. They are only for facilitating describing the present invention and simplifying the description, rather than indicating or implying that the device or component must have a specific orientation, construct and operate in a specific orientation, therefore, it understood as a limitation of the present invention.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, a feature defined as “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present invention, “a plurality of” means two or more, unless otherwise specifically defined.

Referring to FIGS. 1 to 4, the present embodiment provides a foldable support frame 1, including four support columns, two internal support components 2 and two load-bearing components 3. Each load-bearing component 3 includes a [ shape top rod 31 and an I shape side support rod 32. Two ends of the top rod 31 are movably connected to the support columns, the two load-bearing components 3 are movably connected via a first hinge. The four support columns respectively are first support column 11, second support column 12, third support column 13 and fourth support column 14. The first support column 11 and the second support column 12 are movably connected through one internal support component 2, the third support column 13 and the fourth support column 14 are movably connected through another internal support component 2. The first support column 11 and the third support column 13 are connected through one side support rod 32, and the second support column 12 and the fourth support column 14 are connected through another side support rod 32.

Further, two ends of the [ shape top rod 31 are respectively hinged to the four support columns. Specifically, a first groove 15 is arranged on the top side of a support column, a first placement hole 151 is arranged on the side wall of the first groove 15. A first block 311 adapted to the first groove 15 is arranged at an end of the top rod 31, and the first block 311 is embedded in the first groove 15 and is rotatably connected through a first rotary shaft 312.

Similarly, the two load-bearing components 3 are hinged by the first hinge 33, so that the two top rods 31 of the two load-bearing components 3 can fit tightly when folded, so as to minimize the storage space and ensure the connection strength between the top rods 31 and the support columns, thus providing a guarantee for smooth rotation during the folding process.

When an external force acts on the middle parts of the two top rods 31 to make the top rods 31 move upward, the top rods 31 can rotate with the ends of the support columns as fulcrums to fold the top rods 31 of the two load-bearing components 3 until they overlap. During the folding process, the top rods 31 can provide a pulling force toward the center for the support columns, driving the support columns to move toward the center. At the same time, the top rods 31 also can provide a thrust toward the center to the internal support component 2 to make the internal support component 2 to fold toward the center, so as to achieve complete folding of the support frame 1, reduce the storage space, and facilitate users' organization.

The unfolding of the support frame 1 provided in this embodiment is also simple and easy. Users only need to grab the two side support rods 32 and pull them in opposite horizontal directions to fully unfold the folding frame. This design fully considers users' convenience of use. Whether in warehouse sorting, outdoor activity construction or home storage, users can unfold and store the support frame 1 quickly.

Preferably, two groups of internal support components 2 are provided, and the two groups of internal support components 2 respectively include two internal support rods 21 and two connection rods 22. One end of a connection rod 22 is rotatably connected to the bottom side of a support column, and the other end of a connection rod 22 is connected to the internal support rod 21. The two internal support rods 21 of the two groups of the internal support components 2 are connected by a second hinge 23. The internal support components 2 can be flexibly deformed during folding and unfolding and provide stable support for the top rod 31 in the unfolded state.

Further, a second groove 16 is arranged on the bottom side of the support column, and a second placement hole 161 is respectively arranged on the upper and lower sides of the second groove 16. A second block 221 adapted to the second groove 16 is arranged at one end of the connection rod 22 away from the internal support rod 21, and the second block 221 is embedded in the second groove 16 and is rotatably connected through a second rotary shaft 222.

Understandably, when the support frame 1 is in a fully expanded state, the two load-bearing components 3 are parallel, and the internal support rod 21 is located below the top rod 31 to provide support for the top rod 31, and the support frame 1 also has a self-locking function. The self-locking function referred to here means that in the expanded state, if the internal support component 2 is subjected to a force from the outside toward the center of the support frame 1, the movement trend of the top rod 31 should be to rotate downward, but the downward rotation will interfere with the internal support rod 21, so the top rod 31 cannot rotate, realizing the self-locking function; correspondingly, if the internal support component 2 is subjected to a force from the center of the support frame 1 to the outside, the movement trend of the top rod 31 should be to rotate upward, because goods will be piled up above the top rod 31 in the working state, the downward pressure of the goods will prevent the top rod 31 from rotating upward, and the self-locking function is also realized.

According to the above description, the connection positions of the support frame 1 provided in this embodiment mainly adopt movable connections, such as hinge connections or rotary shaft connections, which do not require disassembly and assembly, and can achieve the function of rapid unfolding or folding.

Preferably, the support frame 1 includes four diagonal support ribs 4, and the two ends of a diagonal support rib 4 are respectively connected to one side support rod 32 and one support column.

In one embodiment, the support frame 1 includes four first rib reinforcements 5, and the first rib reinforcement is configured as triangular shape. And the two edges of each first rib reinforcement are respectively connected to one support column and one side support rod 32.

In one embodiment, the support frame 1 also includes four second rib reinforcements 6, and two edges of each second rib reinforcement 6 are respectively connected to one connection rod 22 and one internal support rod 21.

By providing the diagonal support ribs 4 and the rib reinforcements and utilizing the principle of triangle stability, the stability of the support frame 1 can be improved to prevent deformation or overturning during the stress process; in addition, the concentrated load can be dispersed over a larger area to reduce local stress concentration, so as to reduce the risk of structural damage due to excessive stress and extending the service life of the support frame 1.

In one embodiment, the top frame 31 is formed by welding three square tubes. One of the three square tubes has a cross-section of 30 mm*30 mm, a thickness of 2.6 mm, and a length of 850 mm, and other two square tubes have a cross-section of 30 mm* 0 mm, a thickness of 2.6 mm, and a length of 385 mm.

In one embodiment, the side support rod 32 is a square tube with a cross-section of 30 mm*30 mm, a thickness of 2.6 mm, and a length of 790 mm.

In one embodiment, the diagonal support rib 4 is a square tube with a cross-section of 20 mm*20 mm and a thickness of 2 mm.

In one embodiment, the connection rod 22 is a square tube with a cross-section of 20 mm*20 mm, a thickness of 2 mm, and a length of 375 mm, and the internal support rod 21 is a square tube with a cross-section of 20 mm*20 mm, a thickness of 2 mm, and a length of 375 mm.

Further, a circular ring with a length of 25 mm, an outer diameter of 21.3 mm and an inner diameter of 8 mm is welded on the top side of the internal support rod 21.

In this embodiment, all square tubes of the support frame 1 are made of steel with high strength and good toughness, which can meet the mechanical performance requirements of the support frame 1 when carrying heavy objects. In actual applications, other materials with better support properties can also be selected according to different usage scenarios and needs. For example, in some occasions where there are strict requirements on weight, aluminum alloy materials can be used as it has light weight and high strength, which can reduce the overall weight while ensuring the performance of the support frame 1, making it convenient for users to carry. In some environments with high requirements for corrosion resistance, such as the seaside or humid warehouses, stainless steel materials can be selected to ensure that the support frame 1 will not be damaged by corrosion during long-term use.

Taking the above-mentioned structural dimensions as an example, the side of the top rod 31 of the support frame 1 provided in this embodiment can be completely horizontal with gap of 4.5 mm when the support frame 1 is not deployed. In the undeployed state, the floor area of the support frame 1 is 70.5 mm*856 mm=0.060348 m2. In the fully deployed state, the floor area of the support frame 1 is 856 mm*856 mm=0.732736 m3, and the flat floor area after storage is 8.236% of the original. In the undeployed state, the spatial volume of the support frame 1 is 70.5 mm*856 mm*643 mm=0.038704764 m3; and in the fully deployed state, the spatial volume of the support frame 1 is 856 mm*856 mm*250 mm=0.183616 m3, and the spatial volume of the support frame 1 after storage is 21.08% of the original.

Combined with the above, it can be seen that the support frame 1 has a wide range of applicability and can be applied to the base or frame structure of various furniture products, such as iron beds, sofas, storage cabinets, etc. In terms of warehouse storage, its foldable feature can flexibly adjust the spatial layout when the amount of goods stored changes. When there are fewer goods, the support frame 1 can be folded and stored to save warehouse space and facilitate the handling and sorting of goods in the warehouse; when the number of goods increases, the support frame 1 can be quickly unfolded to provide sufficient storage space for the goods.

From the perspective of manufacturing, the structural design of the support frame 1 is conducive to large-scale production. Its main components are made of square tubes, and the connection method is relatively simple, so the main components of the support frame 1 are easy to process and assemble. In the production process, production efficiency can be improved, and the production cost can be reduced through standardized process flow.

It could be understood that under the guidance of the above embodiments, those skilled in the field can combine various implementation methods in the above embodiments to obtain technical solutions of multiple implementation methods.

The above description is only a preferred embodiment of the present invention and is not to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.