JP2001252119A - Spreader of umbrella - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an umbrella, particularly, a spreader of the umbrella. SOLUTION: This spreader of the umbrella having one end pivotally connected to a rib and the other end pivotally connected to an auxiliary sliding inside runner of this umbrella, is composed of a bar shaped rib being made of glass fiber or carbon fiber and having one end pivotally connected to the rib and a part of a metallic connecting rib having a U-shaped groove having two end surfaces and a side surface in the lengthwise direction, has a meshing joing part for surely keeping the connection with the bar-shaped rib on one end of the connecting rib, has a pivot hole close to the bottom of this joint part, and has a hole to be pivotally connected to the auxiliary sliding inside runner on the other end.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an umbrella, and more particularly to an opening and closing support bone of the umbrella.

[0002]

2. Description of the Related Art As shown in FIG. 1, an umbrella trunk 11, a fixed potter's wheel 12,
An auxiliary sliding wheel 13, a sliding lower wheel 14, a spring 15, a number of ribs 16, a number of opening and closing skeletons 17, and a number of auxiliary opening and closing skeletons 18, wherein the fixed upper wheel 12 is located above the umbrella stem 11. , The auxiliary sliding wheel 13 and the sliding wheel 14 slide along the umbrella stem 11 and
5 is mounted between the auxiliary sliding middle wheel 13 and the sliding lower wheel 14, each rib 16 is pivotally connected at one end to the periphery of the fixed upper wheel 12, and each opening and closing skeleton 17 is One end of the wheel is an auxiliary sliding wheel 13
The auxiliary opening / closing skeletons 18 are pivotally connected at one end to the sliding lower wheel 14 and the other end to the opening / closing skeleton 17 at the other end.

[0003] The ribs 16 and the opening / closing skeletons 17 of the above-mentioned ordinary umbrella frame are formed into a U-shaped groove by bending a metal material.
It has the following advantages. 1. Easy to manufacture and low cost. 2. The metal material has sufficient rigidity to maintain the strong elasticity of the spring 15 without deformation.

However, it has the following disadvantages. 1. The metal skeleton adds to the overall weight of the umbrella. 2. Since the metal ribs and the opening and closing supporting bones do not have sufficient elasticity, they are easily deformed by external force, and the umbrella is easily inverted.

[0005] From the point of view of the disadvantages of the metal frame described above,
An umbrella skeleton made of glass fiber or carbon fiber was developed. This type of umbrella has excellent elasticity to prevent deformation even under high wind pressure. However, the manufacturing cost increases due to the need for additional pivot components. Moreover, glass fibers and carbon fibers are weaker than metallic materials in their structural rigidity despite their good elasticity. Therefore, the opening and closing bone made of glass fiber or carbon fiber,
Normally, it cannot withstand the force of the spring 15 or more supported by the metal opening and closing support bone of the same thickness. To achieve sufficient strength, the opening and closing bones of glass fiber or carbon fiber must be structurally thick. Therefore, this type of umbrella is typically not compact when folded, is inconvenient to handle, and increases material costs.

[0006] Illustrated in Figures 2 and 3 is a second type of conventional umbrella, which is not a single metal, or opening and closing bone made of fiberglass or carbon fiber,
It has open and closed skeletons that combine these. The composite opening and closing bone includes a plastic hollow tube 21 and a rod-like bone 22 made of glass fiber or carbon fiber. The plastic hollow tube 21 has a pivot connecting part 211 at one end thereof so as to be pivotally connected to the auxiliary sliding wheel 13, and a shaft at the other end thereof so that the rod-shaped bone 22 can be inserted into the air tube 21. There is a hole 212 in the aerial tube extending in the direction. Near the bottom of the hole 212 of the aerial tube, an ear-like projection 213 having a hole for connecting the auxiliary opening / closing bone 18 is attached.

The opening and closing support bone of the umbrella has the following advantages. 1. It is relatively easy to make a plastic hollow tube integrated together with the pivot connection 211 and the ear 213. 2. Since the rod-like bone 22 is close to the wheel 13 during the auxiliary sliding, the spring 15 exerts a stronger elasticity. Thus, the rod-shaped bone 22 is slid into the plastic hollow tube 21 to reinforce the rod-shaped bone 22.

However, it has the following disadvantages.
1. Plastic molding machines are very large and expensive. And its low efficiency increases manufacturing costs.
2. Plastic materials become increasingly brittle, which tends to cause cracks and shedding of the structure. 3. It is difficult to maintain the quality of plastic materials because of their low structural strength. Even at one location, an umbrella with a defective structural strength could result in a severe loss because a group of umbrellas could be discarded.

[0009]

SUMMARY OF THE INVENTION One of the objects of the present invention is to provide an umbrella opening and closing bone which has the advantages of excellent elasticity and rigidity.

Another object of the present invention is to provide an umbrella opening and closing bone with the advantages of ease of manufacture, low manufacturing costs, and stable quality.

In order to achieve the above-mentioned object, the opening and closing support bone of the umbrella of the present invention has one end connected to the rib of the umbrella and the other end connected to the auxiliary sliding wheel of the umbrella. The glass fiber or carbon fiber rod bone is connected at its end to the rib and the other metal connection bone forms a U-shaped groove with two axial edges and sides. An engaging portion is formed at one end of the connecting bone to stabilize the rod-shaped bone, and one pivot hole is provided near and below the engaging portion. And in order to pivotally connect the other end of the connecting bone with the wheel during auxiliary sliding,
There is a pivot joint and a pivot hole is open.

With the structure described above, the present invention can provide the elasticity of glass fiber or carbon fiber and the rigidity of metal, and its manufacture is easy and quick.
And it is stable.

[0013] These objects and advantages of the present invention will become apparent from the following description and the accompanying drawings.

[0014]

As shown in FIGS. 4 and 5, according to the embodiment of the present invention, the opening and closing support bone 3 incorporated in one umbrella skeleton is pivotally connected at one end to the umbrella rib 35. The other end is connected to the wheel 13 during auxiliary sliding. The opening / closing skeleton 3 has a rod-shaped bone 31 made of glass fiber or carbon fiber provided with a metal connecting portion 32 for pivotally connecting with the rib 35, and a U-shape having a length of about 1/3 to 1/2 of the rod-shaped bone 31. The groove includes two longitudinal edges 331 and a metal connecting bone 33 having side surfaces. The C-shaped engaging portion 333 is a rod-shaped bone 3
1 is formed at one end of the connecting bone 33 to stably hold the auxiliary opening / closing bone 18 near the bottom of the engagement portion 333.
A pivot hole 334 has been drilled for connection to At the other end of the connecting bone 33, there is a pivot portion 336 and a pivot hole 335 for connecting to the wheel during auxiliary sliding.

With the structure described above, the opening / closing skeleton including the rod-shaped bone 31 made of glass fiber or carbon fiber and the connecting bone 33 made of metal can provide the elasticity of glass fiber or carbon fiber and the rigidity of metal. The elasticity of the spring 15 is a rigid connecting bone 3.
3 greatly sustained. The connecting bone 33 is formed by stamping a metal plate, and further includes an engaging portion 333, a pivot hole 334, and a pivot connecting portion 3.
36 is made by pressing. These help speed up the manufacturing process.

The advantages of the present invention are summarized as follows. 1. Excellent elasticity and good rigidity are provided for the opening and closing bones of the umbrella. 2. Pressing and processing of metal sheets is easy and quick. Press machines are less expensive than plastic injection molding machines, and the pressing process advantageously results in better quality than plastic injection, and further reduces costs. 3. The excellent strength of the metal connection bone prevents cracking of the pivot joint, and the U-shaped groove provides excellent structural strength. 4. Metal connecting bone does not result in material degradation that affects structural strength. 5. When external force such as strong wind is applied to the ribs 35,
External force is applied to the rod-like bone 3 made of an elastic material such as carbon fiber or glass fiber via the pivot portion 32.
Reach one. In such a situation, the rod 31 will undergo an elastic displacement to avoid permanent deformation.

Therefore, the metal connecting bone can be given a quality that can be completely controlled by pressing.
The structure of the umbrella of the present invention provides both elastic and rigid properties by using both a metal connecting bone and a rod-like bone made of carbon or fiberglass.

Although the invention has been described with reference to illustrative embodiments, this description is not to be construed in a limiting sense. Various modifications and combinations of the illustrative embodiments, as well as other illustrative embodiments of the invention, will be apparent to those skilled in the art of referencing the description and drawing illustrations. It is therefore intended that the appended claims cover any such modifications or embodiments.

[Brief description of the drawings]

FIG. 1 shows a perspective view of a frame structure of a normal umbrella.

FIG. 2 shows a side view of another conventional umbrella framing structure.

FIG. 3 is a perspective view of a plastic hollow tube in the frame structure of the ordinary umbrella of FIG. 2;

FIG. 4 shows an exploded view of a portion of an umbrella skeleton structure according to an embodiment of the present invention.

FIG. 5 shows an umbrella skeleton structure according to the same embodiment,
The side view of what further united the rib of the umbrella is shown.

Claims (2)

[Claims] 1. An umbrella opening / closing bone having one end pivotally connected to the rib of the umbrella and the other end pivotally connected to the wheel during auxiliary sliding of the umbrella. The umbrella is made of glass fiber or carbon fiber. It consists of a rod-shaped bone, one end of which is pivotally connected to the rib, and a metal connecting bone part with a U-shaped groove with two end faces and side faces in the longitudinal direction,
At one end of the connecting bone there is a meshing joint part to ensure the connection with the rod-shaped bone, and there is a pivot hole near the bottom of this joint part, and at the other end there is an auxiliary sliding wheel and a pivot. Opening and closing skeleton with holes for connecting in a shape. 2. The shape of the engaging joint portion of the connecting bone is C
The opening and closing support bone of the umbrella according to claim 1 in the case of a letter shape.