Thread-snagging prevention type concealed umbrella bone tractor bone structure

Abstract

To provide a concealed umbrella rib tractor structure that prevents the threads from being caught, in which the tip of the tractor strip does not come into direct contact with the umbrella cloth, the phenomenon of the threads of the umbrella cloth being caught by the tractor strip is reduced, the strength of the housing is improved, and the tractor strip has a larger rotation angle. [Solution] The anti-snag concealed umbrella bone tractor structure comprises a housing 1, one end of which has a connecting groove 2, which is rotatably connected to the umbrella bone member by a pin shaft, and a rotating groove inside the housing, which is rotatably connected to a tractor strip X2 by a pin shaft. This anti-snag concealed umbrella bone tractor structure solves the problem of the prior art in which the tip of the tractor strip comes into direct contact with the umbrella fabric, making it prone to snagging.

Description

[Technical Field]

[0001] The present invention relates to the field of umbrella bone technology, and more particularly to a concealed umbrella bone tractor structure that prevents snagging. [Background technology]

[0002] In the prior art (see drawings 5 ​​and 6 of the specification), a press hole is formed by pressing and cutting into the outer wall of the housing, and the bent portion of the front end of the tractor strip is hooked into the press hole to achieve the connection between the housing and the tractor strip.

[0003] The above method exposes the folded portion of the tractor strip to the outside of the housing, making the tip of the tractor strip in direct contact with the umbrella cloth and prone to snagging, which can damage the umbrella cloth due to snagging threads. Summary of the Invention [Problem to be solved by the invention]

[0004] The purpose of this invention is to propose a hidden umbrella rib structure that prevents thread snagging, in order to solve the problem of the existing tractor strips in the prior art, where the tip of the tractor strip comes into direct contact with the umbrella fabric, making it prone to snagging. [Means for solving the problem]

[0005] To achieve the above objectives, the present invention adopts the following technical solutions: A concealed anti-snag umbrella bone tractor structure is designed, which includes a housing, a connecting groove at one end of the housing, which is rotatably connected to the umbrella bone member via a pin shaft, and a rotating groove is opened inside the housing, which is rotatably connected to the tractor strip via a pin shaft.

[0006] Preferably, shielding protrusions are integrally formed on the outer wall of the housing, two sets of the shielding protrusions are provided, and the two sets of the shielding protrusions are provided on both sides of the rotation groove, respectively.

[0007] Preferably, one outer end of the shielding protrusion has an arc-shaped structure, and the outer diameter of the shielding protrusion is larger than the outer diameter of the tractor strip connecting end.

[0008] Preferably, a connection insertion hole is further formed at one end of the outer side of the housing.

[0009] Preferably, a through groove is formed in the outer wall of the housing, the through groove is connected to the rotation groove, and the tractor strip is slidable inside the through groove.

[0010] Preferably, the rotation groove is provided on one side of the through groove. [Effects of the Invention]

[0011] The anti-snag concealed umbrella bone tractor structure of the present invention has the following beneficial effects:

[0012] By opening a rotating groove in the housing, the folded part of the tractor strip, especially the tip of the tractor strip, is hidden inside the housing, so that the tip of the tractor strip does not come into direct contact with the umbrella cloth, reducing the phenomenon of the tractor strip catching on the umbrella cloth thread. When the housing is made of plastic, the shielding projections can be provided on both sides of the rotation groove, and the shielding projections can not only shield the tip of the tractor strip, but also improve the strength of the housing; When the housing is integrally formed with the rib member, a through groove that matches the rotation groove can be drilled in the outer wall of the housing, so that the tractor strip can have a larger rotation angle. [Brief explanation of the drawings]

[0013] [Figure 1]FIG. 10 is a structural schematic diagram showing the assembled state of the umbrella bone members and tractor strips according to the second embodiment. [Figure 2] FIG. 10 is a structural schematic diagram showing the rib members and tractor strips removed according to the second embodiment. [Figure 3] FIG. 10 is a structural schematic diagram showing the assembled state of the umbrella bone members and tractor strips according to the third embodiment. [Figure 4] FIG. 10 is a structural schematic diagram showing the rib members and tractor strips removed according to the third embodiment. [Figure 5] FIG. 1 is a structural schematic diagram of a combination of a press hole and a tractor strip. [Figure 6] FIG. 2 is a schematic diagram of the structure of a press hole. DETAILED DESCRIPTION OF THE INVENTION

[0014] The following describes the technical solutions in the embodiments of the present invention in combination with the drawings, and the described embodiments are not all of the embodiments, but only a part of the present invention.

[0015] Example 1

[0016] Referring to Figures 1 to 4, the anti-snag concealed umbrella bone tractor structure includes a housing 1, a connecting groove 2 at one end of the housing 1, the connecting groove 2 being rotatably connected to the umbrella bone member X1 by a pin shaft, a rotating groove 3 being opened inside the housing 1, the rotating groove 3 being rotatably connected to the tractor strip X2 by a pin shaft.

[0017] Working principle: Referring to Figures 5 and 6, in the prior art, a press hole X3 is formed in the housing 1 by pressing and cutting, and the tractor strip X2 is passed through the press hole X3 to realize a rotational connection between the housing 1 and the tractor strip X2. However, because the bent part of the tractor strip X2 is exposed to the outside, the tip of the tractor strip X2 is likely to get caught on the umbrella cloth, causing the umbrella cloth to be damaged by the snagging. In this solution, a rotation groove 3 is formed in the housing 1, so that the connection part between the tractor strip X2 and the housing 1, especially the bent part of the tractor strip X2, is shielded inside the housing 1, making it difficult for the umbrella cloth to come into contact with the tip of the tractor strip X2, ultimately preventing the umbrella cloth from getting caught on the thread.

[0018] Example 2

[0019] In the first embodiment, in order to prevent the tip of the tractor strip X2 from catching on the umbrella cloth threads, a rotating groove 3 is drilled inside the housing 1. Some complicated umbrella rib structures include a connecting plastic member, one end of which is fitted into the front end of one set of umbrella bone members X1, the other end of which is rotatably connected to the other set of umbrella bone members X1, and the central region of the plastic member is rotatably connected to the tractor strip X2. In such plastic members, simply drilling a rotating groove 3 inside them would weaken their strength. Therefore, as shown in Figures 1 and 2, a shielding protrusion 4 is integrally molded on the outer wall of the housing 1, and there are two sets of the shielding protrusions 4, one on each side of the rotating groove 3.

[0020] Furthermore, one outer end of the shielding protrusion 4 has an arc-shaped structure, and the outer diameter of the shielding protrusion 4 is larger than the outer diameter of the connecting end of the tractor strip X2.

[0021] Furthermore, a connecting insertion hole 6 is further formed at one end of the outer side of the housing 1 .

[0022] Working principle: When in use, one set of umbrella bone members X1 is inserted into the connecting insertion hole 6, and the connecting groove 2 is rotatably connected to another set of umbrella bone members X1 via a pin shaft. In order to improve the strength of the housing 1, a shielding protrusion 4 is integrally molded on the outer periphery where the rotation groove 3 is opened. This shielding protrusion 4 not only provides a shielding effect against the bent part of the tractor strip X2, but also improves the strength of the housing 1.

[0023] Example 3

[0024] Compared with Example 2, in some simpler umbrella bone structures, the housing 1 and the connecting groove 2 are integrally pressed into the umbrella bone member X1, rather than using a separate plastic member. Simply drilling a rotation groove 3 inside the housing 1 would reduce the rotation range of the tractor strip X2. Therefore, as shown in Figures 3 and 4, a through groove 5 is drilled in the outer wall of the housing 1, and the through groove 5 is connected to the rotation groove 3, allowing the tractor strip X2 to slide inside the through groove 5.

[0025] Furthermore, the rotation groove 3 is provided on one side of the through groove 5 .

[0026] Working principle: Because the maximum unfolding angle and the minimum retraction angle are constant, there is a minimum angle on the same side between the housing 1 and the tractor strip X2. The rotation groove 3 and the through groove 5 are offset so that when the housing 1 and the tractor strip X2 form the minimum angle, a portion of the tractor strip X2 fits into the through groove 5, which presses the tractor strip X2 and the outer wall of the housing 1, preventing deformation of the tractor strip X2 and the housing 1 and improving the rotation angle of the tractor strip X2.

[0027] The above are merely preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent replacement or modification by anyone skilled in the art based on the technical means and concept of the present invention within the technical scope disclosed in the present invention shall also be included in the scope of protection of the present invention. [Explanation of symbols]

[0028] 1, housing, 2, connection groove, 3, rotation groove, 4, shielding protrusion, 5, through groove, 6, connection insertion hole, X1, umbrella bone member, X2, tractor strip, X3, press hole.

Claims

1. A concealed umbrella rib tractor structure with anti-snag threads, comprising a housing (1), a connecting groove (2) at one end of the housing (1), the connecting groove (2) being rotatably connected to an umbrella rib member (X1) by a pin shaft, a rotation groove (3) being opened inside the housing (1), the rotation groove (3) being rotatably connected to a tractor strip (X2) by a pin shaft.

2. The anti-snag concealed umbrella rib structure according to claim 1, characterized in that the outer wall of the housing (1) is integrally molded with a shielding protrusion (4), and two sets of the shielding protrusions (4) are provided, each set being provided on both sides of the rotation groove (3).

3. The anti-snag concealed umbrella rib tractor structure according to claim 2, characterized in that one outer end of the shielding protrusion (4) is an arc-shaped structure, and the outer diameter of the shielding protrusion (4) is larger than the outer diameter of the connecting end of the tractor strip (X2).

4. The anti-snag type concealed umbrella rib tractor structure according to claim 2, characterized in that a connecting insertion hole (6) is further drilled at one end of the outer side of the housing (1).

5. The anti-snag, concealed umbrella bone tractor structure according to claim 1, characterized in that a through-groove (5) is opened in the outer wall of the housing (1), the through-groove (5) is connected to the rotation groove (3), and the tractor strip (X2) can slide inside the through-groove (5).

6. The anti-snag concealed umbrella rib structure according to claim 5, wherein the rotation groove (3) is provided on one side of the through groove (5).

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