Framework structure of folding sunshade

Abstract

A framework structure of a folding sunshade. The framework structure comprises upper short ribs and lower main ribs, wherein the lower main ribs each comprise a first rib, a second rib and a third rib; the inner ends of the upper short ribs are pivoted to an upper umbrella runner, and the outer ends of the upper short ribs are hinged to the middles of first ribs; the inner ends of the first ribs are pivoted to a lower umbrella runner; the inner ends of second ribs are hinged to the middle positions between the outer ends of the first ribs and connecting points of the upper short ribs, and the outer ends of the second ribs are hinged to the inner ends of third ribs; connecting ribs are further provided between the upper short ribs and the lower main ribs, and the connecting ribs are each divided into a first connecting rib and a second connecting rib; the inner ends of first connecting ribs are hinged to positions on the sides of the middles of the upper short ribs close to the outer ends, and the outer ends of the first connecting ribs are hinged to the inner ends of second connecting ribs; the outer ends of the second connecting ribs are hinged to the sides of the middles of the third ribs close to the inner ends; and the outer ends of the first ribs are hinged to the sides of the middles of the second connecting ribs close to the inner ends. The present utility model has a simple and rational structure, a firm and stable connection and a good tensile strength, is not easily deformed by an external force, and is suitable for outdoor use.

Description

A skeletal structure for a folding parasol Technical Field

[0001] This invention belongs to the field of folding umbrella technology and relates to a frame structure for a folding sun umbrella. Background Technology

[0002] A folding umbrella is an umbrella with a retractable handle, segmented ribs riveted together, and the ability to be folded. Compared to a regular umbrella, a folding umbrella is shorter, making it easier to carry and store. However, the frame structure of existing folding umbrellas has relatively weak support, and the ribs are prone to deformation and breakage in strong winds and heavy rain, affecting their usability.

[0003] Upon investigation, the existing Chinese patent CN202321930056.8, entitled "A Folding Umbrella Frame Structure," includes a support rod, an umbrella nest assembly, and multiple sets of umbrella rib assemblies evenly distributed along the circumference. The umbrella rib assembly includes a second rib and a third rib. The second and third ribs in the same set of umbrella rib assemblies are each composed of two identical round rods, and both the second and third ribs have a double-layer structure, including a rigid layer and a flexible layer, with the flexible layer wrapping around the rigid layer. This structure, which designs the second and third ribs as two separate, double-layered ribs, enhances wind resistance. However, the structure is relatively complex, making processing and assembly troublesome and costly.

[0004] There is also a Chinese patent, CN202320666007.1, entitled "Folding Umbrella Frame," which includes a main frame, a sliding umbrella nest, and a fixed umbrella nest. Support ribs are hinged to the fixed umbrella nest, and these support ribs are divided into connecting sections, extension sections, and support sections from the inside out. Several connecting rods are hinged to the sliding umbrella nest, with the free ends of the connecting rods hinged to the connecting sections. Several reinforcing rods are hinged to the sliding umbrella nest below the connecting rods, and the ends of the reinforcing rods are slidably connected to the extension sections. This structure, by setting reinforcing rods below the connecting rods, can support the support ribs, but the support strength is not ideal and further improvement is needed.

[0005] Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a frame structure for a folding sun umbrella that is simple and reasonable in structure, has a firm and stable connection, good tensile strength, and can have a relatively larger canopy, in view of the above-mentioned technical status.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a frame structure for a folding sunshade, characterized in that: the frame structure includes an upper short rib and a lower main rib, wherein the lower main rib includes a first rib, a second rib, and a third rib; the inner end of the upper short rib is pivotally connected to the upper umbrella nest, and the outer end is hinged to the middle part of the first rib; the inner end of the first rib is pivotally connected to the lower umbrella nest; the inner end of the second rib is hinged to the middle position between the connection point of the outer end of the first rib and the upper short rib; the second rib... The outer end of the upper short bone is hinged to the inner end of the third bone. A connecting bone is also provided between the upper short bone and the lower main bone. The connecting bone is divided into a first connecting bone and a second connecting bone. The inner end of the first connecting bone is hinged to the middle part of the upper short bone near the outer end. The outer end of the first connecting bone is hinged to the inner end of the second connecting bone. The outer end of the second connecting bone is hinged to the middle part of the third bone near the inner end. The outer end of the first bone is hinged to the middle part of the second connecting bone near the inner end.

[0008] As an improvement, the length of the first bone member is greater than the length of the third bone member, which in turn is greater than the length of the second bone member.

[0009] Furthermore, the length of the first connecting bone is equal to the distance from the outer end of the first bone to the connection point of the upper short bone, and the length of the second connecting bone is equal to the length of the long bone of the second bone plus the distance from the outer end of the upper short bone to the connection point of the first connecting bone, thus forming two intersecting parallelogram structures.

[0010] Furthermore, the upper short bone, the lower main bone, and the connecting bone all use metal rods of the same specifications.

[0011] Finally, umbrella rib connectors are installed on the upper short rib, the first rib, the third rib, and the second connecting rib respectively. The upper short rib is detachably connected to the first rib, the first connecting rib, the first rib to the second rib, the third rib to the second connecting rib, and the second connecting rib to the first rib through the umbrella rib connectors.

[0012] Compared with the prior art, the advantages of this invention are as follows: The lower main rib includes a first rib, a second rib, and a third rib. The inner end of the upper short rib is pivotally connected to the upper umbrella nest, and the outer end is hinged to the middle of the first rib. The inner end of the second rib is hinged to the middle position between the outer end of the first rib and the upper short rib. The outer end of the second rib is hinged to the inner end of the third rib. The outer end of the first connecting rib is hinged to the inner end of the second connecting rib. The outer end of the second connecting rib is hinged to the middle of the third rib near the inner end. The outer end of the first rib is hinged to the middle of the second connecting rib near the inner end. This makes the structure firm and stable, and the umbrella canopy can be made relatively large. The umbrella rib connecting parts are provided, making installation and disassembly convenient, and facilitating maintenance and replacement of the umbrella ribs. The structure of this invention is simple and reasonable, the connection is firm and stable, and the tensile strength is good. It is not easily deformed by external forces and is suitable for outdoor use. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the structure of an embodiment of the present invention;

[0014] Figure 2 is a schematic diagram of the structure of Figure 1 with the umbrella ribs closed;

[0015] Figure 3 is a schematic diagram of the structure of Figure 1 with the umbrella ribs fully deployed. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0017] As shown in Figures 1-3, a frame structure for a folding sunshade includes an upper short rib 1, a lower main rib, and connecting ribs. The upper short rib 1, the lower main rib, and the connecting rib all use metal rods of the same specifications. Of course, non-metallic rods, such as carbon fiber rods, can also be used. The lower main frame includes a first frame 2, a second frame 3, and a third frame 4. The inner end of the upper short frame 1 is pivotally connected to the upper umbrella nest 7, and its outer end is hinged to the middle of the first frame 2. The inner end of the first frame 2 is pivotally connected to the lower umbrella nest 8. The inner end of the second frame 3 is hinged to the middle position between the outer end of the first frame 2 and the connection point of the upper short frame 1. The outer end of the second frame 3 is hinged to the inner end of the third frame 4. The connecting frames are divided into a first connecting frame 5 and a second connecting frame 6. The inner end of the first connecting frame 5 is hinged to the middle of the upper short frame 1 near its outer end. The outer end of the first connecting frame 5 is hinged to the inner end of the second connecting frame 6. The outer end of the second connecting frame 6 is hinged to the middle of the third frame 4 near its inner end. The outer end of the first frame 2 is hinged to the middle of the second connecting frame 6 near its inner end. In this embodiment, the length of the first frame 2 > the length of the third frame 4 > the length of the second frame 3. The length of the first connecting bone 5 is equal to the distance from the outer end of the first bone 2 to the connection point of the upper short bone 1. The length of the second connecting bone 6 is equal to the length of the second bone 3 plus the distance from the outer end of the upper short bone 1 to the connection point of the first connecting bone 5. In other words, in the unfolded state, it forms two connected parallelogram structures A and B.

[0018] Umbrella rib connectors are installed on the upper short rib 1, the first rib 2, the third rib 4, and the second connecting rib 6, respectively. The upper short rib 1 is detachably connected to the first rib 2 and the first connecting rib 5, the first rib 2 is connected to the second rib 3, the third rib 4 is connected to the second connecting rib 6, and the second connecting rib 6 is connected to the first rib 2 via these umbrella rib connectors. These umbrella rib connectors can be screws and nuts or traditional quick-connect fittings.

[0019] The skeleton structure of this embodiment has high strength and stable and reliable connection. It is not easily deformed by external forces, making it suitable for outdoor use. At the same time, it is easy to install and disassemble, and convenient for daily maintenance.

[0020] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A frame structure for a folding sun umbrella, characterized in that: The skeletal structure includes an upper short bone and a lower main bone. The lower main bone includes a first bone, a second bone, and a third bone. The inner end of the upper short bone is pivotally connected to the upper umbrella nest, and the outer end is hinged to the middle of the first bone. The inner end of the first bone is pivotally connected to the lower umbrella nest. The inner end of the second bone is hinged to the middle position between the connection point of the outer end of the first bone and the upper short bone. The outer end of the second bone is hinged to the inner end of the third bone. A connecting bone is also provided between the upper short bone and the lower main bone. The connecting bone is divided into a first connecting bone and a second connecting bone. The inner end of the first connecting bone is hinged to the middle of the upper short bone near the outer end. The outer end of the first connecting bone is hinged to the inner end of the second connecting bone. The outer end of the second connecting bone is hinged to the middle of the third bone near the inner end. The outer end of the first bone is hinged to the middle of the second connecting bone near the inner end.

2. The skeleton structure according to claim 1, characterized in that: The length of the first bone component is greater than the length of the third bone component, which in turn is greater than the length of the second bone component.

3. The skeleton structure according to claim 2, characterized in that: The length of the first connecting bone is equal to the distance from the outer end of the first bone to the connection point of the upper short bone, and the length of the second connecting bone is equal to the length of the second bone plus the distance from the outer end of the upper short bone to the connection point of the first connecting bone, thus forming two connected parallelogram structures.

4. The skeleton structure according to claim 1, 2, or 3, characterized in that: The upper short bone, lower main bone, and connecting bone all use metal rods of the same specifications.

5. The skeleton structure according to claim 1, 2, or 3, characterized in that: Umbrella rib connectors are respectively installed on the upper short rib, the first rib, the third rib, and the second connecting rib. The upper short rib is detachably connected to the first rib, the first connecting rib, the first rib to the second rib, the third rib to the second connecting rib, and the second connecting rib to the first rib through the umbrella rib connectors.

6. The skeleton structure according to claim 5, characterized in that: The umbrella rib connectors are made of screws and nuts or quick-connect fittings.

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