Folding frame structure

Abstract

The invention relates to a folding frame structure which comprises frame pieces, vertical rods, a folding assembly, a frame piece connecting base, a folding assembly upper connecting base and a folding assembly lower connecting base, each frame piece comprises two frame sections, the close ends of the two frame sections are pivoted, the far ends of the two frame sections are pivoted to the frame piece connecting bases respectively, and the folding assembly upper connecting base and the folding assembly lower connecting base are hinged to the frame pieces. The folding assembly comprises a first supporting rod, a second supporting rod, a third supporting rod and a fourth supporting rod, the close ends of the first supporting rod and the third supporting rod are in pivot joint, the far ends of the first supporting rod and the third supporting rod are in pivot joint with the upper connecting base of the folding assembly, and the close ends of the second supporting rod and the fourth supporting rod are in pivot joint. The far ends of the second supporting rod and the fourth supporting rod are respectively pivoted with the lower connecting seat of the folding assembly, the vertical rod comprises an upper section vertical rod and a lower section vertical rod, one of the upper section vertical rod and the lower section vertical rod is sleeved with the other, so that a telescopic structure is formed between the upper section vertical rod and the lower section vertical rod, and the structural strength is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of support frames, and more particularly to a folding frame structure. Background Technology

[0002] The advantages of folding frames lie in their spatial flexibility and adaptability to different scenarios, making them extremely versatile. Take trampolines, for example; a folding frame design on a trampoline facilitates storage and saves space. However, existing folding frames are either too complex, resulting in high manufacturing costs and production difficulties, or they suffer from low structural strength and poor stability. Therefore, we are considering whether we can develop a completely new folding frame structure that can solve these problems in existing technologies. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide a folding frame structure that is strong and easy to fold.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a folding frame structure, comprising: several frame members, several vertical rods, several folding components, several frame member connecting seats, several upper connecting seats for folding components, and several lower connecting seats for folding components. The frame members are connected together by several frame member connecting seats to form a polygonal frame. Each frame member includes two frame segments, with the proximal ends of the two frame segments pivotally connected and the distal ends of the two frame segments pivotally connected to the frame member connecting seats. The folding components include: a first support rod, a second support rod, a third support rod, and a fourth support rod. The first and second support rods are pivotally connected in an X-shape, and the third and fourth support rods are pivotally connected in an X-shape. The proximal ends of the first and third support rods are pivotally connected, and the distal ends of the first and third support rods are pivotally connected to the connecting seats. The ends of the first and second supports are pivotally connected to the upper connecting seat of the folding assembly. The proximal ends of the second and fourth supports are pivotally connected to the lower connecting seat of the folding assembly. The frame member connecting seat and the upper connecting seat of the folding assembly are connected by an elastic member. The vertical rod includes an upper vertical rod and a lower vertical rod. One of the upper and lower vertical rods is fitted inside the other to form a telescopic structure. The upper vertical rod passes through the frame member connecting seat and the upper connecting seat of the folding assembly. The upper vertical rod is fixed to the frame member connecting seat by a first fixing member. The upper vertical rod is fixed to the upper connecting seat of the folding assembly by a second fixing member. The bottom of the lower vertical rod is installed in the lower connecting seat of the folding assembly. The lower vertical rod is fixed to the lower connecting seat of the folding assembly by a third fixing member.

[0005] Preferably, the folding frame structure of the present invention is further configured such that the angle between the line connecting two adjacent frame member connecting seats and the frame member is 5°~10°.

[0006] Preferably, the folding frame structure of the present invention is further configured such that the frame member is located outside the line connecting two adjacent frame member connecting seats.

[0007] Preferably, the folding frame structure of the present invention is further configured such that the pivot points of the second and fourth support rods are located above the pivot points of the first and third support rods.

[0008] Preferably, the folding frame structure of the present invention is further configured such that: when the folding assembly is folded, the adjacent ends of the two side frame segments move upward, the pivot points of the second and fourth support rods move upward, the pivot points of the first and third support rods move downward, and the upper vertical rod extends upward relative to the lower vertical rod.

[0009] Preferably, the folding frame structure of the present invention is further configured such that the first fixing member, the second fixing member, and the third fixing member are all screws.

[0010] Preferably, the folding frame structure in this invention is further configured such that the elastic element is a spring or a rubber washer.

[0011] Preferably, the folding frame structure of the present invention is further configured such that the adjacent ends of the two side frame segments are connected by a rotatable connector to achieve pivoting.

[0012] Preferably, the folding frame structure of the present invention is further configured such that the two frame segments and the rotatable connector together form a polygonal frame component.

[0013] Preferably, the folding frame structure of the present invention is further configured such that: the upper vertical rod is sleeved on the outside of the lower vertical rod, and a protective tube section is provided between the bottom of the lower vertical rod and the lower connecting seat of the folding assembly.

[0014] Compared with existing technologies, the present invention has the following advantages: The folding frame structure of the present invention significantly improves structural strength by inserting the upper vertical rod through the frame member connecting seat and the upper connecting seat of the folding assembly, and fixing them to both with fasteners. The bottom of the lower vertical rod is installed in the lower connecting seat of the folding assembly and fixed therewith with fasteners. Furthermore, by positioning the frame member outside the line connecting two adjacent frame member connecting seats, the present invention reduces frame member deformation after long-term use when the folding frame is applied to a trampoline. (In existing technologies, the frame member is typically positioned exactly on the line connecting two adjacent frame member connecting seats. This structure leads to frame member deformation after long-term trampoline use; that is, the frame member in existing technologies is straight, and after prolonged trampoline use, the straight frame member is prone to inward deformation under stress. The frame member in the present invention forms an outwardly convex polygonal structure, avoiding this problem after long-term use.) Additionally, the vertical rod in the present invention is divided into an upper vertical rod and a lower vertical rod, forming a telescopic structure between them, which facilitates the folding of the entire frame and improves the user experience. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the folding frame structure when unfolded in this invention.

[0016] Figure 2 This is an exploded structural diagram of the lower vertical rod and the lower connecting seat of the folding assembly in this invention.

[0017] Figure 3 This is a partial top view of the folding frame in this invention.

[0018] Figure 4 This is a schematic diagram of the folding frame of the present invention applied to a trampoline.

[0019] Figure 5 This is a structural diagram of the folding frame in the present invention during the folding process.

[0020] Figure 6 This is a schematic diagram of the folding frame in this invention after folding.

[0021] Figures 1 to 6 In the middle: 1. Frame piece, 10. Frame segment, 2. Vertical rod, 20. Upper vertical rod, 200. First fixing piece, 201. Second fixing piece, 21. Lower vertical rod, 210. Third fixing piece, 3. Folding assembly, 30. First support rod, 300. Pivot joint of the first and third support rods, 31. Second support rod, 310. Pivot joint of the second and fourth support rods, 32. Third support rod, 33. Fourth support rod, 4. Frame piece connecting seat, 5. Upper connecting seat of folding assembly, 6. Lower connecting seat of folding assembly, 7. Elastic rope, 8. Protective tube segment, 9. Middle circular jump cloth, 11. Rotatable connector. Detailed Implementation

[0022] The folding frame structure of the present invention will be further described in detail below through specific embodiments.

[0023] Please see Figures 1 to 6 The folding frame structure includes: six frame members 1, six vertical bars 2, six folding components 3, six frame member connecting seats 4, six upper connecting seats 5 for the folding components, and six lower connecting seats 6 for the folding components. The six frame members 1 are connected together by the six frame member connecting seats 4 to form a hexagonal frame. Of course, in other embodiments, the number of these components may not be six; the number can be determined according to specific design requirements. Each frame member 1 includes two frame segments 10, with the adjacent ends of the two frame segments 10 pivotally connected. In this embodiment, the adjacent ends of the two frame segments 10 are specifically connected by a rotatable connector 11 to achieve the pivotal connection. The two frame segments 10 and the rotatable connector 11 together form a polygonal frame member 1. The distal ends of the two frame segments 10 are pivotally connected to the frame member connecting seats 4 respectively. The angle between the line connecting two adjacent frame member connecting seats 4 and the frame member 1 is 5°~10°. The frame member 1 is located outside the line connecting two adjacent frame member connecting seats 4.

[0024] The folding assembly 3 includes: a first support rod 30, a second support rod 31, a third support rod 32, and a fourth support rod 33. The first support rod 30 and the second support rod 31 are pivotally connected in an X-shape, and the third support rod 32 and the fourth support rod 33 are pivotally connected in an X-shape. The proximal ends of the first support rod 30 and the third support rod 32 are pivotally connected to the upper connecting seat 5 of the folding assembly. The proximal ends of the second support rod 31 and the fourth support rod 33 are pivotally connected, and the distal ends of the second support rod 31 and the fourth support rod 33 are pivotally connected to the lower connecting seat 6 of the folding assembly. The pivot point 310 of the second support rod 31 and the fourth support rod 33 is located above the pivot point 300 of the first support rod 30 and the third support rod 32. The frame connector 4 and the folding assembly upper connector 5 are connected by an elastic element (not shown). In this embodiment, the elastic element is a spring. Of course, in other embodiments, the elastic element can also be a rubber washer. The function of the elastic element is to provide a buffering effect, thereby extending the service life of the frame connector 4 and the folding assembly upper connector 5. The vertical rod 2 includes an upper vertical rod 20 and a lower vertical rod 21. One of the upper vertical rod 20 and the lower vertical rod 21 is fitted inside the other to form a telescopic structure. In this embodiment, the upper vertical rod 20 is fitted outside the lower vertical rod 21. A protective tube section 8 is also provided between the bottom of the lower vertical rod 21 and the lower connecting seat 6 of the folding assembly. The function of the protective tube section 8 is that when the folding frame is unfolded, the upper vertical rod 20 retracts downward relative to the lower vertical rod 21. If the protective tube section 8 is not provided, the bottom of the upper vertical rod 20 will directly abut against the lower connecting seat 6 of the folding assembly. Since the lower connecting seat 6 of the folding assembly is made of plastic, it is easily damaged after long-term use. By using a metal protective tube section 8, the upper vertical rod 20 can abut against the protective tube section 8 during the downward retraction process, thereby protecting the lower connecting seat 6 of the folding assembly.

[0025] The upper vertical rod 20 passes through the frame component connecting seat 4 and the upper connecting seat 5 of the folding assembly. The upper vertical rod 20 and the frame component connecting seat 4 are fixed by a first fixing member 200, and the upper vertical rod 20 and the upper connecting seat 5 of the folding assembly are fixed by a second fixing member 201. The protective tube segment 8 is installed in the lower connecting seat 6 of the folding assembly, and the bottom of the lower vertical rod 21 is installed inside the protective tube segment 8. The lower vertical rod 21, the protective tube segment 8, and the lower connecting seat 6 of the folding assembly are fixed by a third fixing member 210. In this embodiment, the first fixing member 200, the second fixing member 201, and the third fixing member 210 are all screws. In this embodiment, except for the pivot connection at the near end of the two frame segments 10 which is connected by a rotatable connector 11, the other pivot connections are achieved by drilling holes in the corresponding components and then having bolts pass through the holes and engage with nuts.

[0026] When the folding assembly is folded, the adjacent ends of the two side frame segments 10 move upward, the pivot points 310 of the second support rod 31 and the fourth support rod 33 move upward, the pivot points 300 of the first support rod 30 and the third support rod 32 move downward, and the upper vertical rod 20 extends upward relative to the lower vertical rod 21.

[0027] Please see Figure 4 , Figure 4 This is a schematic diagram of the folding frame of the present invention applied to a trampoline. The central circular jump cloth 9 is attached to the side frame via elastic ropes 7. When the folding frame is folded, the entire frame retracts towards the center of the jump cloth.

[0028] In summary, the folding frame structure of this invention significantly improves structural strength by inserting the upper vertical rod 20 through the frame member connecting seat 4 and the upper connecting seat 5 of the folding assembly, and fixing them to both with fasteners. The bottom of the lower vertical rod 21 is installed in the lower connecting seat 6 of the folding assembly and fixed therewith with fasteners. Furthermore, by positioning the frame member 1 outside the line connecting two adjacent frame member connecting seats 4, the deformation of the frame member 1 is reduced after long-term use when the folding frame is applied to a trampoline. Additionally, the vertical rod 2 of this invention is divided into an upper vertical rod 20 and a lower vertical rod 21, forming a telescopic structure between them, which facilitates the folding of the entire frame and improves the user experience.

[0029] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A folding frame structure, characterized in that: include: The system comprises several frame components, several vertical rods, several folding components, several frame component connectors, several upper connectors for the folding components, and several lower connectors for the folding components. The frame components are connected together by the frame component connectors to form a polygonal frame. Each frame component includes two frame segments, with their proximal ends pivotally connected and their distal ends pivotally connected to the frame component connectors. The folding components include a first support rod, a second support rod, a third support rod, and a fourth support rod. The first and second support rods are pivotally connected in an X-shape, as are the third and fourth support rods. The proximal ends of the first and third support rods are pivotally connected, and their distal ends are pivotally connected to the upper connectors of the folding components. The second and fourth support rods are pivotally connected at their proximal ends, and their distal ends are pivotally connected to the lower connecting seat of the folding assembly. The frame member connecting seat and the upper connecting seat of the folding assembly are connected by an elastic member. The vertical rod includes an upper vertical rod and a lower vertical rod. One of the upper and lower vertical rods is fitted inside the other to form a telescopic structure. The upper vertical rod passes through the frame member connecting seat and the upper connecting seat of the folding assembly. The upper vertical rod is fixed to the frame member connecting seat by a first fixing member. The upper vertical rod is fixed to the upper connecting seat of the folding assembly by a second fixing member. The bottom of the lower vertical rod is installed in the lower connecting seat of the folding assembly. The lower vertical rod is fixed to the lower connecting seat of the folding assembly by a third fixing member.

2. The folding frame structure as described in claim 1, characterized in that: The angle between the line connecting two adjacent frame members and the frame member is 5°~10°.

3. The folding frame structure as described in claim 1, characterized in that: The frame member is located outside the line connecting each pair of adjacent frame member connectors.

4. The folding frame structure as described in claim 1, characterized in that: The pivot points of the second and fourth support rods are located above the pivot points of the first and third support rods.

5. The folding frame structure as described in claim 1, characterized in that: When the folding assembly is folded, the adjacent ends of the two side segments move upward, the pivot points of the second and fourth support rods move upward, the pivot points of the first and third support rods move downward, and the upper vertical rod extends upward relative to the lower vertical rod.

6. The folding frame structure as described in claim 1, characterized in that: The first, second, and third fixing components are all screws.

7. The folding frame structure as described in claim 1, characterized in that: The elastic element is a spring or a rubber washer.

8. The folding frame structure as described in claim 1, characterized in that: The two adjacent ends of the two frame segments are pivotally connected by a rotatable connector.

9. The folding frame structure as described in claim 8, characterized in that: The two border segments and the rotatable connector together form a polygonal border component.

10. The folding frame structure as described in claim 1, characterized in that: The upper vertical rod is sleeved on the outside of the lower vertical rod, and a protective tube section is provided between the bottom of the lower vertical rod and the lower connecting seat of the folding assembly.

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