Umbrella structure

Abstract

This invention provides an umbrella structure made of a single, complete piece of fabric without an opening for the top tip, which can be securely assembled with the fabric, top tip, and shaft via an appliqué. It comprises: an umbrella fabric; a top tip; a shaft with an internal thread engraved on its inner surface for the external thread of the top tip to engage; and a flat appliqué with a central hole through which the external thread of the top tip passes. The external thread of the top tip passes through the hole in the appliqué and is threadedly engaged with the internal thread of the shaft via a daisy-shaped washer. The periphery of the appliqué, excluding the portion abutting the side of the top tip head and the portion abutting the daisy-shaped washer, is bonded to the inner surface of the umbrella fabric, increasing the bonding area between the periphery of the appliqué and the inner surface of the umbrella fabric, thus increasing the bonding strength and preventing peeling. The central portion of the appliqué, excluding the periphery, is positioned between the top tip and the shaft. The top tip is not directly bonded to the umbrella fabric and can move in a spiral motion accordingly.

Description

Technical Field

[0001] This invention relates to a novel umbrella structure, and more particularly to an umbrella structure suitable for a single-sheet fabric umbrella. Background Technology

[0002] Recently, umbrellas made from a single piece of fabric have become very popular due to their advantages, such as no leaks because they are made without stitches and the ability to seamlessly display patterns. However, in the basic structure of an umbrella, traditionally... Figure 4 and Figure 5 As shown, the umbrella fabric 17 is mounted on an umbrella frame, such as the upper umbrella shaft 18, by pressing the top tip 15 and the chrysanthemum-shaped washer 16, which are located at the front end of the umbrella, together. Therefore, a hole 19 is made in the center of the umbrella fabric 17 corresponding to the top tip 15 and the chrysanthemum-shaped washer 16. Thus, although it is a single piece of fabric, the top tip 15 appears in the center of the umbrella surface, which detracts from the unified aesthetics of the design reflected by the umbrella fabric (in this case, a picture of a dog). Therefore, it is problematic both in appearance and structure to call it a complete single piece of fabric.

[0003] In addition, as a technical means to solve this problem, as shown in Japanese Utility Model Registration No. 3225893 previously proposed by the inventor, a threaded part with external or internal threads installed on the back side of the central part of the umbrella fabric and a threaded part with internal or external threads that engage with the threaded part is provided on the frame side. However, if the adhesion strength between the back side of the central part of the umbrella fabric and the screw head is weak, they may separate. Moreover, the operation process of using external threaded parts is troublesome and costly.

[0004] And, as Figure 6 As shown, a technical means is provided to bond the upper surface of the external threaded component to the inner side of the umbrella fabric 21. However, as indicated by the bonding range shown by the arrow, the bonding area on the upper surface of the external threaded component is small. Therefore, there are significant problems such as poor bonding strength and easy peeling. Moreover, since the umbrella fabric and the screw head (the head of the external threaded component) are bonded and threaded onto the umbrella shaft, there is a cumbersome aspect to removing the external threaded component from the umbrella shaft while rotating the umbrella fabric during umbrella rib repair. In addition, for umbrellas made of a single piece of fabric, regardless of the case of a solid color, there is also the following problem when the umbrella pattern is important in terms of its vertical and horizontal positions: if the main body of the fabric is directly bonded to the external threaded component, it is very difficult to position it.

[0005] Patent Document 1: Japanese Patent Application Publication No. 2018-183557

[0006] Patent Document 2: Japanese Utility Model Registration No. 3225893 Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] The present invention provides an umbrella structure comprising: an umbrella fabric; an external threaded member disposed on the inner side of the umbrella fabric with a head diameter larger than the shaft diameter; an umbrella shaft with an internal thread engraved on its inner surface for threaded engagement of the external threaded member; and a flat patch having a hole in the center through which the head of the external threaded member passes but through the shaft, the shaft of the external threaded member passing through the hole in the patch and threadedly engaged with the internal thread of the umbrella shaft, and the periphery of the patch, except for the portion abutting against the side of the head of the external threaded member, being bonded to the inner surface plane of the umbrella fabric.

[0009] Methods for solving problems

[0010] The umbrella structure of the present invention comprises: an umbrella fabric; an external threaded member disposed on the inner side of the umbrella fabric with a head diameter larger than the shaft diameter; an umbrella shaft with an internal thread engraved on its inner surface for threaded engagement of the external threaded member; and a flat patch having a hole in the center through which the head of the external threaded member passes but through the shaft, the shaft of the external threaded member passing through the hole in the patch and threadedly engaged with the internal thread of the umbrella shaft, and the periphery of the patch, except for the portion abutting against the side of the head of the external threaded member, being bonded to the inner surface plane of the umbrella fabric.

[0011] The effects of the invention

[0012] The umbrella structure of the present invention comprises: an umbrella fabric; an external threaded member disposed on the inner side of the umbrella fabric with a head diameter larger than the shaft diameter; an umbrella shaft with an internal thread engraved on its inner surface for threaded engagement of the external threaded member; and a flat patch having a hole in the center through which the head of the external threaded member passes but through the shaft, the shaft of the external threaded member passing through the hole in the patch and threadedly engaged with the internal thread of the umbrella shaft, and the periphery of the patch, except for the portion abutting against the side of the head of the external threaded member, is bonded to the inner surface plane of the umbrella fabric. Therefore, the following effects can be obtained: the bonding area between the periphery of the patch, except for the portion abutting against the side of the head of the external threaded member, and the inner surface of the umbrella fabric can be increased, the bonding strength is increased, and it is not easy to peel off. Furthermore, since the external threaded component is not glued or bonded to the umbrella fabric, it can move in a spiral motion accordingly. The vertical and horizontal positioning of the patterned fabric sheet is the same as that of a regular umbrella. After positioning, the external threaded component and the internal thread of the umbrella shaft can engage through the threads, thus simplifying the positioning process. Moreover, it has the following advantages: when repairing the umbrella, because the external threaded component does not directly engage with the umbrella fabric, the hole in the fabric can be cut to easily remove the external threaded component. After repair and restoration to its original state, simply plug the cut hole with tape. Attached Figure Description

[0013] Figure 1This is a schematic structural diagram illustrating an example of an embodiment of the umbrella structure of the present invention.

[0014] Figure 2 This is an enlarged rough cross-sectional view of the main part of an example of an implementation of the umbrella structure of the present invention.

[0015] Figure 3 This is a schematic diagram illustrating the actual operating sequence of the umbrella structure of the present invention.

[0016] Figure 4 This is a rough cross-sectional view of the main part of a previous umbrella structure example.

[0017] Figure 5 This is a rough cross-sectional view of the main part of a previous umbrella structure example.

[0018] Figure 6 This is a rough cross-sectional view of the main part of another example of a previous umbrella structure.

[0019] Explanation of reference numerals in the attached figures

[0020] 1. Umbrella structure

[0021] 2 umbrella fabrics

[0022] 3a External thread head

[0023] 3b External threaded part shaft

[0024] 4 External threaded parts

[0025] 5 internal threads

[0026] 6 umbrella poles

[0027] 7 holes

[0028] 8 patches

[0029] 8c surrounding area

[0030] 10 pads

[0031] 11 main ribs

[0032] 12. Upper umbrella shaft. Detailed Implementation

[0033] The umbrella structure of the present invention comprises: an umbrella fabric; an external threaded member disposed on the inner side of the umbrella fabric with a head diameter larger than the shaft diameter; an umbrella shaft with an internal thread engraved on its inner surface for threaded engagement of the external threaded member; and a flat patch having a hole in the center through which the head of the external threaded member passes but through the shaft, the shaft of the external threaded member passing through the hole in the patch and threadedly engaged with the internal thread of the umbrella shaft, and the periphery of the patch, except for the portion abutting against the side of the head of the external threaded member, being bonded to the inner surface plane of the umbrella fabric.

[0034]

Example 1

[0035] Hereinafter, the umbrella structure 1 of the present invention will be described based on an embodiment.

[0036] like Figure 1 and Figure 2 As shown, the umbrella structure 1 of the present invention comprises: umbrella fabric 2; an external threaded member 4, which is disposed on the inner side of the umbrella fabric and the diameter of the head 3a is larger than the diameter of the shaft portion 3b; an umbrella shaft 6, which has an internal thread 5 engraved on its hollow inner surface for threaded engagement with the shaft portion 3b of the external threaded member 4; and a flat patch 8, which has a hole 7 in the center through which the head 3a of the external threaded member 4 does not pass but through which the shaft portion 3b passes. The shaft portion 3b of the external threaded member 4 passes through the hole 7 of the patch 8 and is threadedly engaged with the internal thread 5 of the umbrella shaft 6. The adhesive portion of the patch 8, excluding the portions 8a and 8b that abut against the side of the head 3a of the external threaded member 4, is bonded to the inner side surface 2a of the umbrella fabric.

[0037] When representing an example of the actual sequence of tasks, such as Figure 3 As shown in (a) to (c), the shaft portion 3b of the external threaded component 4 is inserted into the patch 8 with a central hole. As indicated by the arrow, the adhesive portion of the surrounding portion 8c of the patch 8, excluding the abutting portion 8a and 8b on the side of the external threaded component head 3a, is heat-fused to the inner side 2a of the umbrella fabric using an iron or similar tool. Then, a pad 10 of the same material as the chrysanthemum-shaped washer is inserted into the external threaded component 4 and screwed into the internal thread 5 of the umbrella rod 6. Since the portion of the patch 8 that abuts against the external threaded component head 3a, i.e., the portion 8a and 8b that abuts against the side of the external threaded component head 3a in this embodiment, is not glued, the external threaded component 4 can move spirally accordingly.

[0038] In addition, 11 is the main umbrella rib and 12 is the upper umbrella shaft.

[0039] The above embodiments are applied to single-sheet umbrellas, but can of course also be applied to umbrellas other than single-sheet umbrellas. Regarding the bonding method, heat welding with an iron is used in the embodiments, but it is not limited to this; any method can be chosen. Furthermore, any method can be used for the planar bonding of the umbrella fabric and the appliqué.

[0040] Industrial availability

[0041] According to the umbrella structure of the present invention, the following effects can be achieved: the bonding area between the periphery of the flat patch (excluding the portion abutting the side of the external threaded component) and the inner side of the umbrella fabric can be increased, thus increasing the bonding strength and making it less prone to peeling. Furthermore, since the portion abutting the head side of the external threaded component is not adhered to or bonded to the umbrella fabric, the external threaded component can move in a spiral motion accordingly. The vertical and horizontal positioning of the patterned single piece of fabric is also achieved in the same way as in a conventional umbrella. After positioning, the external threaded component and the umbrella shaft can be engaged by threads, thus simplifying the positioning operation. Moreover, it also has the following advantages: when repairing the umbrella, since the external threaded component does not directly engage with the umbrella fabric, the external threaded component can be easily removed by cutting open the hole in the patch. After repair and restoration to its original state, the cut hole can simply be plugged with adhesive tape.

Claims

1. An umbrella structure, characterized by Provided are: an umbrella cloth; an outer screw member provided on the inner side of the umbrella cloth and having a head portion with a larger diameter than a shaft portion; an umbrella shaft having an inner thread formed on the inner surface thereof for threadingly engaging the outer screw member; and a flat patch having a hole formed in the center thereof through which the shaft portion of the outer screw member passes but the head portion of the outer screw member does not pass, the shaft portion of the outer screw member passing through the hole of the patch and threadingly engaging the inner thread of the umbrella shaft, and the peripheral portion of the patch, except for the portion that abuts against the side surface of the head portion of the outer screw member, being planarly bonded to the inner surface of the umbrella cloth.

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