JP2003052431A - Folding umbrella - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the thickness of an umbrella when the umbrella is folded. SOLUTION: The folding umbrella which is foldable to a plurality of steps is characterized in that at least one rib materials among a plurality of rib materials constituting the ribs 1 are formed as the deformed rib materials C curved and formed to a crank shape in plan view and when the umbrella is folded, the front end sides of the deformed rib materials C are folded to exist at the side parts of the rib materials folded thereto.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding umbrella,
In particular, the present invention relates to a folding umbrella which has a small outer diameter when folded and is compact, and is excellent in portability.

[0002]

2. Description of the Related Art Recently, foldable umbrellas, which can be folded into a compact form when carried and become an umbrella of a predetermined size when in use, are very popular and very convenient to carry in a bag or handbag. It has been widely used as an umbrella.

The conventional folding umbrella of this type is generally a three-stage fold whose main rib is composed of three aggregates. Among them, a fold is a four-stage fold in which the main bone is composed of four aggregates. It is sometimes offered in a more compact form.

[0004]

When the main rib is composed of three aggregates, the length of the umbrella cloth when folded is set so that the diameter of the umbrella cloth when it is opened during use becomes a predetermined size. It is not short enough and bulky to fit in a bag or purse. If the length when folded is shortened, the diameter of the umbrella cloth stretched during use becomes smaller, and the umbrella cannot function sufficiently.

Therefore, if the main rib is made up of four aggregates and is folded in four steps, the length of the umbrella cloth that is unfolded during use can be shortened by that amount while maintaining a predetermined size. The form can be made even better when carried.

However, in the case of the four-stage folding, the four aggregates constituting each rib (usually 6 to 8) are folded in four stages when folded, so that the four aggregates overlap each other. As a result, the folding umbrella becomes thick and bulky when folded.

Among them, among the aggregates constituting the main bone, the aggregate on the side close to the upper wheel is formed into a U-shaped cross section, and when the aggregate of the next stage is folded, it is inserted into the U-shaped aggregate. There is also a structure in which the outer diameter when folded is made small so that the overlap between the aggregates becomes as small as possible. It was made thick to make it acceptable, and again it was not possible to make it sufficiently small when folded.

In view of this, the present invention makes it possible to reduce the thickness when folded, and for example, a four-fold folded umbrella frame can be made substantially the same thickness as a three-fold folded umbrella and has a length. The task was to make it fold into a short and compact form.

[0009]

Means for Solving the Problems As a means for solving the above problems, the present invention relates to a folding umbrella which can be folded in a plurality of stages, and in at least one aggregate out of a plurality of aggregates constituting a rib, is crank-shaped in a plan view. It is characterized in that the deformed aggregate is bent and formed so that when it is folded, the tip end side of the deformed aggregate is located at the side portion of the aggregate to be folded and folded.

In the case of the three-stage folding in which the main bone is composed of three aggregates, the aggregate located in the middle is regarded as a deformed aggregate, and in the case of the four-stage folding in which the main bone is composed of four aggregates, The second or third or both of the potter's wheel is made to be the deformed aggregate.

With the above structure, the deformed aggregate is folded so that it is located on the side of the aggregate which overlaps with the deformed aggregate, so that the outer diameter when folded is smaller by that amount, and the compact body is compact. Can be folded into a form.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings.

1 to 10 show an embodiment in which the folding umbrella according to the present invention is folded in four stages. FIG. 1 shows a half portion of the folding umbrella in an opened state, and FIG. 2 shows the same plane. The figure is shown.

The main frame 1 of the folding umbrella is composed of four aggregates shown in FIGS. 4 to 8, and the rear end of the base is centered on the shaft 4 on the upper lathe 3 fixed to the upper end of the handle rod 2. And a first aggregate 1A that is rotatably pivoted downward in the
A second aggregate 1B in which a bearing portion 5 near the base end is rotatably supported upward at the tip of A about a shaft 6, and a bearing portion near the base end at the tip of the second aggregate 1B. A third aggregate 1C is rotatably pivoted downward about an axis 8 and a bearing portion 9 near the base end of the third aggregate 1C is directed upwards about the axis 10. And a fourth aggregate 1D that is rotatably supported, and the third aggregate 1C is a deformed aggregate C as shown in FIGS. 2, 3, and 7.

As shown in FIG. 7B, this deformed aggregate C is bent to one side at an angle θ when viewed from the upper surface at a longitudinal intermediate portion near the rear end, and the bent portion C is formed.
It is formed in a crank shape in plan view by bending at an angle θ from a to the side of the distal end portion Cb again parallel to the proximal end side, and one side surface Cc of the proximal end side and one side surface C of the distal end portion Cb.
The amount of deviation from d is set to a dimension L sufficient to allow the tip portion Cb to fall into the side portion of the second aggregate 1B and be positioned in parallel when the rib 1 is folded.

The lower lathe 11 which is slidably fitted to the handle rod 2 and the longitudinal intermediate portion of the first aggregate 1A are connected by a first child bone 12 in the usual manner.
2 and the proximal end of the second aggregate 1B are connected to each other by the second skeleton 13.

The tip of the first aggregate 1A and the third aggregate 1
C rear end, and tip of second aggregate 1B and fourth aggregate 1D
The rear end is connected by elastic wire rods 14 and 15 (piano wire), and when the umbrella 1 is folded, the second aggregate 1B and the fourth aggregate 1D are automatically flipped upward when the parent bone 1 is folded. Is being transmitted. The elastic wire 1
4 is strong and the elastic wire 15 is preferably weaker.

The handle rod 2 includes a first tube 2A, a second tube 2B, a third tube 2C and a fourth tube 2D.
The tubes are sequentially telescopically fitted and extendable, and the repeller 16 that locks the upper wheel 11 to keep the umbrella open on the uppermost fourth tube 2D is elastic. It is provided with a prominent habit.

As shown in FIGS. 11 and 12, the tubes 2A to 2D are subjected to homing processing at their bases so as to be connected so as not to come out from each other.
Grooves 18 and 18 are formed in 7, and ribs 19 are formed in the inner peripheral longitudinal direction of the tube on the side to be fitted therein, and by fitting these grooves 18 and ribs 19, the tubes do not rotate but slide. You can do it.
As a result, no vertical groove is formed on the outer surface of each of the tubes 2A to 2D, and a cylindrical appearance can be provided to improve the appearance.

Between the tubes 2A to 2D, a click stop 2 which is locked at that position when it is extended.
0, 20, 20 are provided.

In the figure, reference numeral 21 is a umbrella cloth, and 22 is a grip.

Therefore, the handle rod 2 is extended and the lower wheel 1
When 1 is slid upward, the first skeleton 12 rises, whereby the first aggregate 1A of the main bone 1 rotates upward so as to be in a horizontal posture, and accordingly, the second skeleton 13 moves to the second The rear end of the aggregate 1B is pulled to rotate the second aggregate 1B so as to be in a horizontal posture, and the next rear third aggregate 1C and the fourth aggregate 1D
Also, the umbrella cloth 21 stretched on the ribs 1 is sequentially rotated and extended as shown in FIG. 1, so that the umbrella cloth 21 can be used as an umbrella.

When purging the umbrella from this use state, if the repellant 16 is pushed and the lowering wheel 11 is lowered, the first child bone 12 descends accordingly and the first aggregate 1A rotates downward. As the elastic wire 14 is pulled along with this,
The aggregate 1B rotates upward, and the elastic wire 15
Is pulled, the fourth aggregate 1D also rotates upward.

As a result, the four aggregates 1A to 1D are folded in a zigzag shape. At this time, since the deformed aggregate C that constitutes the third aggregate 1C is folded along one side of the second aggregate 1B that is about to overlap with the third aggregate 1C, the third aggregate 1C (irregular aggregate C)
The tip Cb side of the does not overlap the second aggregate 1B,
The fourth aggregate 1D is folded so as to overlap the second aggregate 1B.

Since all the ribs 1 (six in the illustrated example) forming the umbrella frame are in the folded state as described above, the diameter of the folding umbrella after folding becomes smaller by that amount and when folded. The cross section has a rectangular cross section and can be stably placed.

By the way, according to the above embodiment, the diameter of the umbrella cloth when expanded is 950 mm, and the length of the handle rod 2 when expanded is 4 mm.
When the length is 50 mm, the length when folded is 155 mm,
The same diameter can be set to 36 mm, and the diameter of the umbrella cloth 21 can be made larger than the length and diameter when folded.

When the umbrella cloth 21 is stretched during use, the tension of the elastic wires 14 and 15 prevents the umbrella from becoming a so-called "choco" (reverse fold).

FIG. 13 shows the second aggregate 1B of the main rib 1 which is folded in four steps.
FIG. 3 is a plan view of a configuration in which the third aggregate 1C and the third aggregate 1C are irregular aggregates C, and in this case, the second aggregate 1B and the third aggregate
The bending direction with respect to the aggregate 1C is reversed, and when folded, the gaps are filled with each other so that they can be accommodated. By doing so, the outer diameter at the time of folding can be further reduced.

When the main rib is a folding umbrella having a three-fold fold, the same effect can be obtained by using a deformed aggregate as the aggregate located in the center although not shown.

[0030]

As described above, according to the present invention, since the deformed aggregate forming a part of the rib when folded is positioned so as to be located on the side of the aggregate which overlaps with the deformed aggregate, The outer diameter of the folding umbrella when folded is that small, and it does not become bulky when carried, and it can be made into an optimal form for carrying it in a bag or handbag.

In particular, even when a folding umbrella having a four-fold structure in which the main rib is composed of four aggregates, the umbrella does not become excessively thick when folded, and the advantage of shortening the length peculiar to the four-fold folding is unchanged Since the outer diameter is thin, portability can be remarkably improved.

Also regarding manufacturing, the deformed aggregate does not have to have a great influence on the cost because it is only necessary to bend it into a crank shape by pressing or the like.

[Brief description of drawings]

FIG. 1 is a front view of a half portion of an opened umbrella showing an embodiment in which the present invention is applied to a four-fold folding umbrella.

FIG. 2 is a plan view of the same.

FIG. 3 is a partially enlarged plan view of the same.

FIG. 4 is a front view showing a part of the umbrella frame in a folded state in section.

5A and 5B show a first aggregate that constitutes a rib of the folding umbrella of FIG. 1, in which FIG. 5A is a side view and FIG. 5B is a plan view.

FIG. 6 shows the same second aggregate, (A) is a side view, (B)
Is a plan view.

FIG. 7 shows a third aggregate (deformed aggregate), in which (A) is a side view and (B) is a plan view.

FIG. 8 is a side view of the fourth aggregate.

FIG. 9 shows the same first child bone, (A) is a side view, (B)
Is a plan view.

FIG. 10 is a side view of the same second phalanx.

FIG. 11 is a cross-sectional view of a handle rod.

FIG. 12 is a cross-sectional view showing a fitting portion of the handle rod.

FIG. 13 is a side view of a rib according to another embodiment of the present invention.

[Explanation of symbols]

1 rib 1A 1st aggregate 1B Second aggregate 1C No. 3 aggregate (deformed aggregate C) 1D 4th aggregate 2 handle rod 2A 1st tube 2B 2nd tube 2C 3rd tube 2D 4th tube 4,6,8,10 axis 5,7,9 Bearing part 3 top wheel 11 lowering wheel 12 First bone 13 Second child bone 14,15 elastic wire 16 Hajiki 17 Homing processing department 18 grooves 19 ribs 20 click stops 21 Umbrella cloth

Claims (4)

[Claims] 1. A folding umbrella that can be folded in a plurality of stages,
At least one aggregate of a plurality of aggregates constituting the main bone is formed as a deformed aggregate formed by bending in a crank shape in plan view, and when folded, the tip side of the deformed aggregate is a side of the aggregate that is folded over. Folding umbrella characterized in that it is positioned so that it can be folded. 2. The folding umbrella according to claim 1, wherein the main bone is a three-stage fold consisting of three aggregates, and an aggregate located in the middle is a deformed aggregate. 3. The folding umbrella according to claim 1, wherein the main rib is a four-stage fold consisting of four aggregates, and the third aggregate from the upper wheel is a deformed aggregate. 4. The aggregate according to claim 1, wherein the main bone is a four-stage fold consisting of four aggregates, and the second aggregate from the top wheel or the second and third aggregates are deformed aggregates. Folding umbrella.