JPS6230964Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to umbrellas, and proposes a small umbrella that is particularly inexpensive and has toy-like elements.Of course, it can be folded into a small size and placed in a clothes pocket, making it portable. Of course, it can be considered for convenience, but it can also be used for practical purposes, in which case, like a conventional umbrella,
The entire umbrella is curved so that it does not feel unnatural when used.

Hitherto, extremely small umbrellas have been proposed especially for use with toys, but this is of no interest as it would miniaturize the umbrellas that are actually used.

In view of these points, the present invention is designed to be particularly usable as a toy, and also to be extremely inexpensive, so that it can also be used disposablely.

An example of the umbrella according to the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view schematically showing the umbrella according to this embodiment, and as is clear from this, the umbrella body 1
and a support rod 2.

First, the umbrella body 1 will be explained with reference to FIG. 3. It consists of two circular thin sheets 5.
(shown with 5a and 5b in FIGS. 7 and 8) are polymerized. This sheet 5
It is possible to use polyethylene with a thickness of about 0.04 to 0.07 mm.

A through hole 6 (see FIG. 3) is formed in the center of each of these sheets 5, and a relatively thick reinforcing plate 3 is formed of plastic in a substantially circular shape, and this serves as a guide for the above-mentioned pair of sheets. On the upper surface (or lower surface) of the sheet 5, the through holes 6 are adhered (welded) to each other with the sheet 5 aligned with that of the sheet 5,
Regarding the outer peripheral edge 7 of the sheet 5, the upper and lower sheets 5 are also adhered (welded) to each other and hermetically sealed.

Further, the two sheets 5 are bonded (welded) to each other at the upper and lower portions described below. That is, as shown in Fig. 3, assuming a dividing line D (shown as a solid line in the figure) divided into 16 corners, virtual lines (circles) drawn on the radii R ₁ to _{R 5} are drawn as C _{1 to C 1} to R 5 respectively. Let it be C ₅ . As an example, R ₁ is 25, R ₂ is 65, R ₃ is 140, R ₄ is 200,
You can choose _R5 to 230 (both mm).

Then, on the dividing line D, an air non-intrusion portion (hereinafter referred to as a large non-intrusion portion) 11 having a relatively large area is formed over the range of circles C ₃ to _{C 5} . As shown in FIG. 4, this large non-intrusion portion 11 has a shape in which the width increases toward the center of the umbrella body 1 and narrows toward the outer periphery, and the radius r ₁ of the head portion is 7.
It has a semicircular shape selected to be mm, and is smallest on circle _C4 , and forms almost a single line between circles _C4 and _C5 .

On every other dividing line D, air non-intrusion portions (hereinafter referred to as medium non-intrusion portions) 12 having a relatively medium area are formed so that the respective heads are in contact with the circle _C2 . As shown in FIG. 5, this middle non-intrusion portion 12 has an elliptical shape, and the radius r ₂ at each end is selected to be 6 mm, and the overall length is selected to be approximately 25 mm.

Furthermore, an air non-intrusion part (hereinafter referred to as a small non-intrusion part) 13 having a relatively small area is formed between circles _C4 and _C5 . As shown in Fig. 6, this small non-intrusion part 13 has a shape whose width increases toward the center and decreases toward the outside, and the radius _r3 of its head is selected to be 1 mm. ing.

Reference numeral 4 shown in FIG. 2 is an air inlet, which is formed in a part of the outer peripheral edge 7 of the umbrella body 1. The structure of this air inlet 4 will be explained as shown in FIGS. 7 and 8, a portion of which is shown in enlarged form. That is, a portion of the outer periphery of each of the upper and lower sheets 5 is integrally extended outward, and the front portion thereof is folded back inward, so that the tips thereof are located within the umbrella body 1. 8 is a protruding portion, and 9 is a folded portion. Continuously along the outer peripheral edge of the umbrella main body 1, both side edges of the protruding portion 8 and both side edges of the folded portion 9 are formed by overlapping and bonding the top and bottom of each other. In FIG. 7, this bonded (welded) portion is shown by mesh. Therefore, this air inlet 4 is also formed to be extremely flexible as a whole.

Next, the support rod 2 will be explained. As shown in FIG. 9, a support rod body 14 and a cap 15, which can be folded or expanded into about five stages, such as a rod antenna for a portable radio receiver, can be used. A male thread 16 is formed at the tip of the main body 14, and a female thread 18 is formed inside the cap 15. After passing the tip of the main body 14, that is, the male thread 16, through the above-mentioned through hole 6, the cap 15 is screwed into the male thread. When screwed into 16, the flanges 17 and 1 formed on both 14 and 15
9, the reinforcing plate 3 is sandwiched between the reinforcing plates 3 and 9.
Reference numeral 20 is a so-called grip handle, which is not limited to the illustrated shape but can be selected from various shapes.

The above-mentioned air-tight portions 11, 12 and 13 can be formed by tightly adhering, i.e., welding, the upper and lower sheets 5a and 5b together over their entire areas, respectively. However, air can also be prevented from entering the portions 11, 12 and 13 having such shapes by sealing only the outer contours of each of these shaped portions.

The usage method and effects of such a configuration will be explained.

As mentioned above, the main body 1 of the umbrella according to the present invention is constructed by superposing two extremely thin sheets 5, so that it can be folded into a very small size when not in use. Also, as support rod 2, 5
Since it can be expanded and contracted to the extent of a stage, the overall size is small in the contracted state. Also, as shown in the numerical example,
An extremely small umbrella of about 230 mm can be constructed, and is therefore particularly suitable for use as a toy.

When in use, air is injected into the umbrella body 1 through its air inlet 4. For this injection, it is preferable to use a straw by inserting it into the injection port 4. When almost all the air has been injected into the umbrella body 1, the straw is pulled out from the inlet 4. As a result, the pair of folded pieces 9 are attached to the umbrella body 1.
They are brought into close contact with each other by the pressure of the air inside them, and the air inside them does not leak to the outside, and is thus held in a circularly bulging state.

In this state, the tip of the support rod 2 is passed through the through hole 6 and the cap 15 is screwed into the support rod 2.
It can be supported by the umbrella body 1.

In the present invention, since the parts 11, 12 and 13 shown in FIG. 3 of the two stacked sheets 5 are glued together, when air is injected into the umbrella body 1, each of the air Air cannot enter into the non-intrusion part of the umbrella body, so when the umbrella body 1 is lifted from the support rod 2, the outside part falls downward due to its weight, and its overall shape becomes similar to that of the conventional one. The umbrella has a curved shape when in use.

In addition, the more the number of dividing lines on the umbrella body is, or the longer the length of the non-air infiltration part, the more the umbrella body will droop as a whole; conversely, the fewer the number of dividing lines on the umbrella body, the more , the shorter the length of the non-air intrusion section, the flatter the umbrella body becomes overall.

Therefore, the number of dividing lines in the umbrella body was selected to be 16, and the length of the air-infiltration part was selected to be approximately 1/2 of the dividing line, and the shape of the air-infiltration part was selected so that it was closer to the center of the umbrella body. Therefore, by selecting the umbrella so that the width thereof increases and becomes narrower toward the outer periphery, the shape of the umbrella body during use can be maintained in a curved state even in a relatively small umbrella.

As a result of long-term experiments, the present invention has shown that by gluing predetermined parts of two sheets in the state shown in Figure 3, it is possible to create an umbrella that resembles a real one, especially for use as a toy. This has been confirmed.

Furthermore, after use, the air inside the umbrella body 1 can be discharged by inserting a straw, for example, into the air inlet 4, making it possible to fold it up again and carry it around, as well as being able to manufacture it at a low cost as a whole. It has the characteristics that it can be made disposable if necessary.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing an example of an umbrella according to the present invention, Fig. 2 is a top view thereof, Fig. 3 is a diagram similar to Fig. 2 for explaining the structure of the umbrella body, and Fig. 4 Figures to Figure 6 are plan views showing the shape of the air non-intrusion part;
FIG. 7 is a perspective view of a portion of the umbrella body with a part of the air inlet cut away, FIG. 8 is a sectional view of FIG. 7, and FIG. 9 is a side view showing an example of the support rod. 1 is an umbrella body, 2 is a support rod, 5 is a seat, and 4 is an air inlet.

Claims (1)

[Scope of utility model registration request] It consists of a support rod and an umbrella body formed by overlapping two approximately circular sheets. The width extends toward the center of the umbrella body and narrows toward the outer periphery of the umbrella body in contact with the outer periphery of the umbrella body over a range of about 1/2 of the length of the umbrella body. The umbrella body has a central part and an outer periphery formed with sealed parts for the upper and lower sheets, and an air inlet is formed in at least a part of the outer periphery. An umbrella characterized in that a means for supporting the support rod is formed in the center portion.