JPH0263406A - Folding umbrella made of cardboard - Google Patents

Abstract

PURPOSE:To form the present umbrella into a board shape at the time of folding and erase the image of an umbrella and enable the manufacture at a low cost by doubly bending a square cardboard body in the center, erecting nearly rectangular holding pieces along cut lines formed on both sides, and covering the same with a waterproof sheet. CONSTITUTION:In a body 2, U-shaped cut lines 12, 14 are formed in the right/left symmetrical positions with a bending portion 10 as the center, forming holding pieces 20, 22 which are bendable by the cut lines 12, 14. Cut-out portions 24, 26 for inserting four fingers are provided on the free end sides of the holding pieces 20, 22 line- symmetrically to the bending portion 10, and a projecting piece 28 having a narrow- width portion 28a is formed on the bottom portion of the cut-out portion 24, while forming a recessed portion 26a opposite to the 28a on the bottom portion of the cut-out portion 26. Both side portions of the body 2 are covered with a waterproof sheet 30 such as a polyvinyl chloride sheet, etc., of which both side edge portions are formed into bag shapes. The body 2 is bent with the bending portion 10 as the center, the holding pieces 20, 22 are superposed and inserted into the recessed portion 26a, and the holding piece 20 is locked to the holding piece 22 by means of the projecting piece 28.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a folding umbrella made of paperboard.

[Conventional technology]

Conventional umbrellas generally have a metal frame and a waterproof cloth or vinyl sheet that is opened by the metal frame.

[Problem that the invention seeks to solve]

Conventional folding umbrellas are expensive due to their complicated structure.
Also, when folded, it takes on the shape of a short, slender rod, but when you look at it, you can tell it's an umbrella. As a result, when the rain stops, holding an umbrella in your hand creates an unnatural feeling that does not match the surrounding environment such as an event venue.

The present invention aims to solve the above problems.

[Means to solve problems]

In order to achieve the above object, the present invention provides a structure in which the main body 2 made of rectangular paperboard can be folded in two from the center.
A bent part 10 is provided in the center of the main body 2, and U-shaped cutting lines 12.14 are symmetrically formed on both sides of the main body 2 with the bent part 10 as a boundary. A handle piece 20.22 is formed, one end of the handle piece 20.22 is bendable on a line perpendicular to the bent part 10, and each open end side of the handle piece 20.22 has a Notch 24.
26 is transparent, and the main body 2 is covered with a waterproof sheet 30.

[Effect]

At the time of folding, the main body 2 is folded in two with the bent part 10 at the center of the main body 2 as the center. When using it as an umbrella, open the main body 2, overlap the handle pieces 20 and 22, align the notches 24 and 26, and press the notches 24.
26 by hand and use it.

〔Example〕

The structure of the present invention will be described in detail below with reference to embodiments shown in the accompanying drawings.

Reference numeral 2 denotes a main body made of approximately square paperboard, in the center of which long holes 4, 6.8 are formed along a straight line; The main body 2 is configured to be able to bend around the bending section 10. The main body 2 has a structure in which a wavy reinforcing paper is bonded between two sheets of cardboard. A rectangular portion 2a on the left side and a rectangular portion 2b on the right side, with the bent portion 10 of the main body 2 as a boundary, are shaped like a gap. When the main body 2 is stored or carried when not used as an umbrella, it is bent and folded around the bending part 10, and has left and right rectangular parts 2a, 2.
b are in a superimposed state. of the main body 2,
U-shaped cutting lines 12 and 14 are formed at left and right symmetrical positions around the bending part 10, and the cutting lines 12 and 14 cause the bending to take place around a bending line 16 and 18 that is perpendicular to the bending part 10. A possible handle piece 20.22 is formed.

The handle pieces 20, 22 are configured symmetrically with respect to the bending portion 10. On the open end side of each of the handle pieces 20.degree. A projecting piece 28 having a narrow part 28a is formed at the bottom of the other notch 26, and a recessed part 26a having a shape suitable for receiving the narrow part 28a is formed at the bottom of the other notch 26. is formed. Both sides of the main body 2 are covered with a waterproof sheet 3o such as a vinyl sheet with bag-shaped edges on both sides, and the waterproof sheet 30 surrounds the outer plane of the main body 2 and the cutting line 12.14. The empty space is covered. The main body 2 is waterproofed.

Next, the operation of assembling the main body 2 into an umbrella shape will be explained.

First, the main body 2 is unfolded into a square shape as shown in FIG.
6.18, the beam is bent at a right angle as shown in FIG. Next, the main body 2 is bent around the bending part 10 in the center thereof, and the handle pieces 20 and 22 are connected to each other as shown in FIG. Overlap them so that their notches 24 and 26 match. In this state, the left and right rectangular portions 2a and 2b are set at an angle of approximately 110 degrees.

Next, the protruding piece 28 is bent and its narrow part 28a is inserted into the opposing recessed part 26a as shown in FIG.

The handle piece 20 is locked to the handle piece 22 by the projection piece 28. The assembly of main body 2 is now complete.

As shown in FIG. 6, all users should put their four fingers through the notches 24 and 26 of the handles 20 and 22, grasp the handles 20 and 22 with their hands, hold the main body 2 over their heads, and use the main body 2 as an umbrella. 6 When the main body 2 is not used as an umbrella, remove the projecting piece 28 from the recessed part 26'a and remove the 1 handle piece 20.22.
is folded down around the bending lines 16 and 18 until it becomes flush with the rectangular parts 2a and 2b, and then the main body 2 is folded in half around the bending part 10.

〔effect〕

Since the present invention is configured as described above, it has the advantage that when folded, it becomes a board shape, eliminating the image of an umbrella, and that it can be manufactured at low cost.

[Brief explanation of the drawing]

Figure 1 is a developed external view, Figure 2 is a sectional view taken along line A-A, Figure 3 is an external view, Figure 4 is an external view, Figure 5 is a partial external view, and Figure 6 is a partial external view.
The figure is an explanatory diagram showing the state of use. 2...Main body, 4,6.8...Long hole, 10...Bending part, 12.14...Cutting line, 16.18...Bending line,
20゜22...Handle piece, 24゜26...Notch, 28...Protrusion piece. 30... Tarpaulin sheet

Claims (1)

[Claims] (1) A bent part 10 is provided at the center of the main body 2 so that the main body 2 made of rectangular paperboard can be bent in two from the center, and a U-shaped shape is formed on both sides of the main body 2 with the bent part 10 as a boundary. The cutting lines 12, 14 are formed symmetrically, and the cutting lines 12, 1
4 to form substantially rectangular handle pieces 20, 22, one end of the handle pieces 20, 22 can be freely bent on a line perpendicular to the bending part 10, and each of the handle pieces 20, 22 A folding paperboard umbrella characterized in that notches 24 and 26 are transparently provided on the open end side, and the main body 2 is covered with a waterproof sheet 30.