The structure of the dowels in a slim folding umbrella

Abstract

To provide a dowel structure for a slim folding umbrella that optimizes layout and space allocation and significantly reduces the umbrella storage volume. [Solution] The dowel structure 1 of a slim folding umbrella is used to connect the coccyx, medial rib, and connecting ribs. The dowel structure is integrally cast and has a body 11 with a recess 12 at the top of the body. The recess divides the left and right sides of the body into a first branch 111 and a second branch 112. An insertion hole 113 is drilled at the tail end of the first branch, and the coccyx is attached to the first branch through the insertion hole. The recess has a first branch opening 121 and a second branch opening 122 on both the front and back sides, respectively. The dowel structure optimizes layout and space allocation, and the recess is designed with branch openings at the front and back to accommodate the connecting ribs and medial rib. When the umbrella is folded, all of the skeleton is stored in the direction of the umbrella handle, and the medial rib and coccyx are parallel, avoiding congestion due to stacking. The mesenteros and connecting bones are hidden within the naturally formed skeletal containment spaces at the branch openings and defects, and do not require additional thickness.

Description

[Technical Field]

[0001] The present invention relates to the technical field of folding umbrellas, and more particularly to the dowel structure of slim folding umbrellas. [Background technology]

[0002] As shown in Figure 1, the dowel structure of a conventional folding umbrella is usually an integrated design, in which the dowel (a1) is connected to the connecting rib (a2), metatarsal rib (a3) ​​and coccyx (a4) through the protruding hinge tabs (a5, a6). However, this structure has the following defects: 1. Bloating problem: When the umbrella is folded, the ribs are stacked on the surface of the dowels, making the folded thickness large and the entire umbrella bloated, as shown in Figure 2. 2. Risk of wear on the umbrella cloth: If the umbrella ribs are exposed, it is easy to damage the umbrella cloth, which will affect its service life.

[0003] To solve the above problem, the conventional technology improves the inclined dowel structure (b1) as shown in Figure 3, by drilling a U-shaped groove structure (b2) on its surface, and fitting the connecting ribs and mesosinus into the groove through hinge holes (b3, b4), thereby reducing the umbrella storage volume. However, the groove needs to be deepened and the dowel thickened to accommodate the umbrella ribs, resulting in material waste and increased weight. In addition, the increased thickness of the dowel structure still results in a large radial space after the umbrella is folded. Summary of the Invention [Problem to be solved by the invention]

[0004] To solve the shortcomings of the prior art, the present invention provides a slim folding umbrella dowel structure, optimizes the layout and space allocation, and significantly reduces the umbrella storage volume. [Means for solving the problem]

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] A dowel structure for a slim folding umbrella, the dowel structure is used to connect a tailbone, a medial rib and a connecting rib, the dowel structure is integrally cast molded, the dowel structure has a body, and a defect is provided at the top of the body; The defect section divides the left and right sides of the main body into a first branch and a second branch, an insertion hole is opened at the tail end of the first branch, and the coccyx is attached to the first branch through the insertion hole; a first branch opening and a second branch opening are formed on both front and rear sides of the defect portion, and first hinge holes are formed on both sides of an inner wall of the first branch opening, both of which are connected to the outside of the main body; and the connecting bone is attached to the first branch opening via a hinge member and the first hinge hole; Second hinge holes, which are connected to the outside of the body, are formed on both sides of the inner wall of the second branch opening, and the mesentery is attached to the inside of the second branch opening via the hinge member and the second hinge hole.

[0007] As a further explanation of the above technical solution, the tail end length of the first branch is longer than that of the second branch.

[0008] As a further explanation of the above technical solution, the first branch is widened.

[0009] As a further explanation of the above technical solution, the outer walls of the left and right sides of the body are both notched for hinge holes.

[0010] As a further explanation of the above technical solution, the end of the entrance of the insertion hole presents a smooth arc surface. [Effects of the Invention]

[0011] Compared with the prior art, the advantages of the present invention are as follows: This method optimizes the layout and space allocation of the dowel structure, designs the defect part, and opens branching openings before and after it, storing the connecting ribs and mestochords respectively. This allows all the skeleton to be stored in the direction of the umbrella handle after the umbrella is stored, and the mestochords and coccyx are in parallel, avoiding congestion due to stacking.

[0012] The mesentrin and connecting bones are hidden within the skeletal storage space naturally formed by the branch openings and defects, so no additional thickness is required and it is thinner than the dowel structure of the present invention in the prior art.After the umbrella is stored, it takes up less radial space within the same radius with the umbrella handle as the center, which has the advantages of being more convenient to store and carry, and is particularly suitable for multi-fold umbrellas. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a schematic diagram of the structure of a dowel of a folding umbrella in the prior art. [Figure 2] FIG. 1 is a schematic diagram of the umbrella ribs in the prior art after the umbrella is stored. [Figure 3] FIG. 1 is a schematic diagram of the structure of an improved dowel in the prior art. [Figure 4] 1 is a schematic diagram of the structure of a dowel according to the present invention. [Figure 5] 1 is a schematic diagram of the connecting ribs of the dowel structure of the present invention. [Figure 6] Schematic diagram 2 of the connecting ribs of the dowel structure of this invention. [Figure 7] 1 is a schematic diagram of the umbrella ribs according to the present invention after the umbrella is stored. DETAILED DESCRIPTION OF THE INVENTION

[0014] The following embodiments of the present invention will be combined with the drawings to clearly and completely explain the technical solutions in the embodiments of the present invention, and the clear and explained embodiments are not all embodiments but only some embodiments of the present invention. Based on the embodiments of the present invention, any other embodiments that can be obtained by those skilled in the art without any creative work belong to the scope of protection of the present invention.

[0015] 4-7, the dowel structure of a slim folding umbrella, the dowel structure 1 is used to connect the tailbone 2, the medial rib 3 and the connecting rib 4, the dowel structure 1 is integrally cast molded to improve structural strength and reduce assembly steps. The dowel structure 1 has a main body 11, a recess 12 is provided at the top of the main body 11, the recess 12 divides the left and right sides of the main body 11 into a first branch 111 and a second branch 112, an insertion hole 113 is opened at the tail end of the first branch 111, the tailbone 2 is attached to the first branch 111 through the insertion hole 113, the recess 12 has a first branch opening 121 and a second branch opening 122 opened at the front and rear sides, respectively, the first branch opening 121 A first hinge hole 1211, which is connected to the outside of the main body 11, is opened on both sides of the inner wall of the first branch opening 121, and the connecting rib 4 is attached to the first branch opening 121 via a hinge member and the first hinge hole 1211. A second hinge hole 1221, which is connected to the outside of the main body 11, is opened on both sides of the inner wall of the second branch opening 122, and the mesentrin 3 is attached to the second branch opening 122 via a hinge member and the second hinge hole 1221.

[0016] This method improves the dowel structure 1 by opening branch openings on both the front and back sides of the defect 12 and fitting the central rib 3 and connecting ribs 4 into the two branch openings respectively. After the umbrella is retracted, all of the ribs are retracted in the direction of the umbrella handle, with the central rib 3 and the tail rib 2 in a parallel position (as shown in Figure 6), avoiding overcrowding due to stacking. The central rib 3 and connecting ribs 4 are hidden within the space formed by the defect 12, and the branch openings and defect 12 naturally form a space for storing the ribs. Compared with the prior art, the dowel structure 1 of the present invention is thinner and achieves the goal of reducing the diameter of the retracted umbrella within the same radius around the handle. This has the advantages of reducing the volume of the retracted umbrella and making it easier to store and carry, and is particularly suitable for multi-fold umbrellas (such as five-fold or seven-fold umbrellas).

[0017] The tail end length of the first branch 111 is longer than that of the second branch 112. This ensures the attachment depth of the coccyx 2, and the longer first branch 111 provides a greater force angle, making the opening and closing process of the coccyx 2 more stable and reducing the risk of shaking or deformation. In addition, the first branch 111 is widened, which provides a larger contact area and makes the coccyx 2 more stable after insertion, reducing loosening and slippage.

[0018] Furthermore, notches 13 are drilled in the outer walls of both the left and right sides of the main body 11 at the hinge holes, which are used to accommodate the heads of the hinge members (such as rivets or screws) so that they do not protrude outward and do not rub or interfere with folding. The entrance end of the insertion hole 113 is a smooth arc surface, and the other parts of the main body 11 transition into arcs in sync to prevent sharp edges from damaging the surface of the umbrella ribs or umbrella fabric.

[0019] The above are only preferred specific embodiments of the present invention, and the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can make equivalent substitutions or modifications based on the technical solutions of the present invention and its improved concepts within the technical scope disclosed in the present invention, and these should also be included in the scope of protection of the present invention. [Explanation of symbols]

[0020] 1. Dowel structure 11. Main unit 111, First Branch 112, Second Branch 113, insertion hole 12. Defective part 121, First Branch 1211, first hinge hole 122, the second branch 1221, second hinge hole 13. Notch 2, coccyx 3, middle main bone 4, connecting bone.

Claims

1. A dowel structure for a slim folding umbrella for connecting a tailbone (2), a medial rib (3) and a connecting rib (4), the dowel structure (1) being integrally cast, the dowel structure (1) comprising a body (11), and a defect (12) at the top of the body (11); The defect portion (12) divides the left and right sides of the main body (11) into a first branch portion (111) and a second branch portion (112), an insertion hole (113) is opened at the tail end of the first branch portion (111), and the coccyx (2) is attached to the first branch portion (111) through the insertion hole (113); A first branch opening (121) and a second branch opening (122) are formed in the defect portion (12) on both the front and rear sides of the defect portion (12), and first hinge holes (1211) are formed on both sides of the inner wall of the first branch opening (121), both of which are connected to the outside of the main body (11). The connecting bone (4) is attached to the first branch opening (121) by a hinge member and the first hinge hole (1211). The dowel structure of a slim folding umbrella is characterized in that second hinge holes (1221) that are connected to the outside of the main body (11) are drilled on both sides of the inner wall of the second branch opening (122), and the central rib (3) is attached to the inside of the second branch opening (122) by the hinge member and the second hinge hole (1221).

2. The dowel structure for a slim folding umbrella according to claim 1, characterized in that the tail end length of the first branch (111) is longer than that of the second branch (112).

3. The dowel structure for a slim folding umbrella according to claim 1, characterized in that the first branch (111) is widened.

4. The dowel structure of the slim folding umbrella according to claim 1, characterized in that notches (13) are drilled in the outer walls of both the left and right sides of the body (11) at the hinge holes.

5. The dowel structure for a slim folding umbrella according to claim 1, characterized in that the entrance end of the insertion hole (113) has a smooth arcuate surface.

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