JPH09244662A - Mold sheet for megaphone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To to easily assemble a megaphone having plural pieces of a megaphone cylinders from one sheet of a mold sheet by adopting the mold on the megaphone cylinder side composed of the main plate of a megaphone part having approximately V-shaped notched sides and partition plates. SOLUTION: The mold on the mouth base cylinder side is bent up to be superposed on the mold on the megaphone cylinder side from a tuck-in line 71. Both of the partition plates 4a, 4b are then bent inward in the state of the plane form from the folding lines 6a, 6b of the main plate 1 of the megaphone part having the approximately V-shaped tuck-in side 18 and in this state, the mouth base part main plate 3 on the mouth base cylinder side is folded backward from a small arc part 31 at the top end. Only the folding margin 8 and the folding margin 10 are superposed double to form the double folding margins. The main plate 1 of the megaphone part on the megaphone cylinder side and the mouth base side main plate 3 on the mouth base cylinder side are both curved slightly. The main plate 1 of the megaphone part is further curved until the partition plate 4a and the partition plate 4b face each other. Finally, the connecting pieces 12 at both ends on the right and left of the main plate 3 of the mouth base part and parts 14 to be connected are connected, by which the mouth base cylinder is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a megaphone used for supporting sports in a ball stadium, a stadium or the like, and more particularly to a megaphone formed of a flexible die sheet.

[0002]

2. Description of the Related Art Conventionally, there has been one in which a megaphone is formed from one or a plurality of mold sheets (for example, Japanese Patent Laid-Open No. 6-242242)
0-243699 and Japanese Utility Model Laid-Open No. 186736/1988.
JP-A-7-14496 and JP-A-7-14496.
Japanese Patent Publication No. 49693). Each of these megaphone mold sheets has a configuration in which it is formed into one substantially frustoconical mouthpiece and loudspeaker, and is provided with a handle or the like as a grip portion,
It is configured to have multiple functions such as hats, fans and panels.

In recent years, in supporting sports, there is a tendency to hit the megaphone with a hand to enjoy the striking sound according to the situation of the battle, and there is a megaphone capable of producing a louder striking sound. (For example, Japanese Utility Model Laid-Open No. 63-24600 and Japanese Utility Model No. 7-301338.
No. 1). These megaphones consist of two substantially semi-cylindrical cylinders shaped like a dogleg, which are symmetrically combined through a hinge, or one loudspeaker bundled with a plurality of loudspeakers. Each of them is made of a plurality of molded parts and is configured to open and close the loudspeakers so that the loudspeakers hit each other like a time signature to obtain a large impact sound. .

[0004]

Originally, the megaphone has a shape to fulfill its functional role because of its use as a loudspeaker. It is a shape in which a small frustoconical mouthpiece that receives sound without omission and a large frustoconical loudspeaker that efficiently expands the sound in a wide angle are combined in a constricted manner. In addition, when holding the constricted portion when holding the megaphone in this shape, the mouthpiece plays a role of preventing slippage, and is stable and easy to hold.

However, in the former of those described in the prior art, the shape of the megaphone formed from the mold sheet of the megaphone is one substantially frustoconical tube, which is different from the original shape of the megaphone described above. Since the shape does not have a constricted portion, there is a problem that the loudspeaker performance as a loudspeaker cannot be sufficiently exhibited.

[0006] Further, since the tube has a large size due to the shape having no constricted portion, there is a drawback that a child or the like has a difficulty in holding a megaphone, and some have a handle or the like for solving this problem. However, when cheering with a megaphone, it is very difficult to hit the grip, and sometimes the grip is broken or broken. If the body of the megaphone is struck, it will slip out of the hand because there is no constriction, and if it is squeezed firmly, its shape will plastically deform.

Further, in the latter, there is no one formed from a mold sheet of a megaphone, and in order to assemble various parts into a product shape by molding and processing synthetic resin materials such as plastic in a megaphone in a factory. The production cost is high, and compared to a megaphone that has one loudspeaker because it consists of multiple loudspeakers, it is not possible to stack the mouthpiece of a megaphone with the loudspeakers of other megaphones, making it extra bulky. However, there is a problem that the cost is physically high in terms of transportation, inventory and sales.

The present invention has been made in view of the problems of the prior art, and an object thereof is to have an original constricted portion that can sufficiently exhibit the loudspeaking performance and is easy for a child to hold. A high-maintainability megaphone consisting of a loudspeaker and a mouthpiece, and a megaphone with a plurality of loudspeakers capable of producing a louder hitting sound. It is intended to be provided at a low cost by using the mold sheet of.

[0009]

In order to achieve the above object, in the mold sheet of the megaphone of the present invention, the generatrix from the lower end small circular arc portion of the substantially large fan shape that spreads upward is centered on the bus line. A substantially V-shaped cutting edge that extends and a main part of a loudspeaker in which a connected portion is provided substantially in the center in parallel with the cut side, and a substantially stand that is connected to left and right ends of the loudspeaker main plate via folding lines. -Shaped partition plate, connecting pieces provided respectively at the ends of the left and right partition plates via folding lines, and a bow-shaped folding margin composed of the lower end small arc portion of the loudspeaker main plate and its chord portion In the pattern of the partially expanded figure on the side of the loudspeaker, a connecting piece is attached to one of the left and right end portions of a generally small fan shape that spreads downward from the upper small arc portion to the lower end large arc portion, and the connected portion is on the other side. The mouth main plate provided, the upper small arc portion of the mouth main plate, and The shape of the partially expanded figure on the mouth cylinder side, which is composed of a bow-shaped folding margin composed of a chord portion, is defined by the chord portion of the folding margin of the loudspeaker cylinder side and the bow shape of the mouth barrel side. It is composed of a single flexible sheet material that is configured as an overall unfolded pattern that symmetrically combines the folding allowance on the loudspeaker side and the folding allowance on the mouthpiece side, with the chord part as a single folding line. .

Further, the mold of the partially expanded figure on the side of the loudspeaker is connected to one of the left and right ends of a substantially large fan shape that spreads upward from the lower small arc portion to the upper upper arc portion, and is connected to the other end. It is also possible to comprise a loudspeaker main plate provided with a portion, and a bow-shaped folding margin composed of the lower end small circular arc portion of the loudspeaker main plate and its chord.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on embodiments with reference to the drawings.

First, a first embodiment of the invention will be described with reference to FIGS. FIG. 1 is a plan view of a megaphone mold sheet, which is obtained by punching out an overall development figure of a megaphone formed into a shape having two substantially semi-conical-shaped loudspeakers with respect to one substantially frustoconical mouthpiece. It is a figure. With the folding line 71 as a boundary, the upper part is the partially expanded pattern on the side of the loudspeaker and the lower part is the partially expanded pattern on the side of the mouth tube, which will be described separately.

First, the type of the partially expanded figure on the side of the loudspeaker is a substantially V-shape that extends from the lower end small circular arc portion 16 of the substantially large fan shape extending upward to the upper upper large arc portion 17 around a bus line (not shown). The cut side 18 and the connected portions 5a, 5b parallel to this.
Is provided substantially at the center, the main plate 1 of the loudspeaker, partition plates 4a and 4b of substantially trapezoidal shape, which are connected to both left and right ends of the main plate 1 of the loudspeaker via folding lines 6a and 6b, respectively. The connecting plates 7a and 7b are provided at the ends of the partition plates 4a and 4b via folding lines 9a and 9b, respectively, and the lower end small circular arc portion 16 of the loudspeaker main plate 1 and its chord 71 are formed into an arc shape. It is composed of a folding margin 8.

Next, the pattern of the partially expanded figure on the mouth cylinder side is such that the connecting piece 12 is provided on one of the left and right end portions of the substantially small fan shape which spreads downward from the upper small arc portion 31 to the lower large arc portion 32. The mouth portion main plate 3 provided with the connected portion 14 and the upper end small circular arc portion 31 of the mouth portion main plate 3 and a bow-shaped folding margin 10 including the chord portion 71.

Both of them are a chord portion 71 of a bow-shaped folding margin 8 on the side of the loudspeaker and a bow-shaped folding margin 10 on the mouth cylinder side.
The pattern portion 71 is used as one folding line 71, and the folding margin 8 and the folding margin 10 are symmetrically combined to form a single pattern sheet of a megaphone of an overall developed figure.

The substantially V-shaped notch 18 provided on the loudspeaker main plate 1 of the first embodiment described above has the width of the interval between the loudspeakers of the megaphone, as can be seen from the description of the assembly of the megaphone described later. . Therefore, in the present invention, it is desirable that the size of the cut width and the length of the cut side 18 is not limited, and the size is appropriately determined according to the strength and elasticity of the material of the sheet used. Further, the present invention does not limit the position of the cut side 18, and the position of the cut side 18 is related to the ratio of the caliber of the left and right loudspeakers, but the position is arbitrary.

Further, in the present invention, the size of the mold on the loudspeaker side and the mold on the mouthpiece side are not limited. In the first embodiment, the mold of the partially expanded figure on the loudspeaker side is the main plate 1 of the loudspeaker section. Although the size is the same on the left and right with the cut edge 18 as a boundary, the type of the partially expanded graphic on the loudspeaker side may be different in the left and right size.

Now, the procedure for assembling the template sheet of the megaphone of the first embodiment shown in FIG. 1 into the megaphone will be described with reference to FIGS.
This will be described with reference to FIG. In FIG. 2, the mold on the mouth tube side is folded up from the folding line 71 so as to overlap with the mold on the loudspeaker side, and the fold lines 6a and 6b of the loudspeaker main plate 1 to the partition plates 4a and 4b are both flat. While still inwardly folded, the mouth plate main plate 3 on the mouth cylinder side is then folded back from the upper end small arc portion 31 toward the front, and the folding allowance 8 and the folding allowance 1
Only 0 is overlapped in a double manner to form a double folding margin 77, and a state where the loudspeaker main plate 1 on the loudspeaker side and the mouth main plate 3 on the mouth barrel side are both slightly curved is a perspective view seen from above. is there.

FIG. 3 shows a state in which FIG. 2 is turned upside down.
The loudspeaker main plate 1 on the side of the partition plate 4a is further curved, and the connected portion 5a of the loudspeaker main plate 1 is connected to the connecting piece 7a bent from the folding line 9a of the partition plate 4a (this state is indicated by the symbol a). (Shown), one of which is a substantially semi-conical truncated loudspeaker A1
It is the perspective view which looked at the state where it formed from above.

FIG. 4 shows the partition plate 4 from the state of FIG.
The loudspeaker main plate 1 on the b side is further curved so that the connected portion 5
The connecting piece 7 bent from the folding line 9b of the partition plate 4b to b
b is connected (this state is indicated by a symbol B) to form a second loudspeaker A2 having a substantially semi-conical shape, and the partition plate 4a of the flat portion of the loudspeaker A1 formed at the stage of FIG. The partition plate 4b of the flat portion of the cylinder A2 is opposed to each other, and finally, the connecting pieces 12 and the connected portions 14 at both left and right ends of the main plate 3 of the mouth portion are connected to each other to form the mouth cylinder D1. It is the fragmentary sectional view seen from above. In addition, the symbol C indicates a cross-sectional portion of the double folding margin 77 in which the folding margin 8 and the folding margin 10 are doubly overlapped with each other.

Next, a second embodiment of the invention will be described with reference to FIGS. FIG. 5 is a plan view of a die sheet of a megaphone in which an entire development figure of a megaphone formed in a shape having one substantially frustoconical loudspeaker tube with respect to one substantially frustoconical mouth tube is die-cut. is there. With the folding line 71 as a boundary, the upper part is a partially developed figure on the side of the loudspeaker, and the lower part is a partially developed figure on the side of the mouthpiece.

The type of the partially expanded figure on the side of the loudspeaker is a connecting piece 13 at one of the left and right ends of the substantially large fan shape that spreads upward from the lower small arc portion 21 to the upper upper arc portion 22, and is connected to the other end. It is composed of a loudspeaker main plate 2 provided with a portion 15, a bow-shaped folding margin 11 composed of the lower end small circular arc portion 21 of the loudspeaker main plate 2 and its chord 71. The mold of the partially developed figure on the mouth tube side is the same as that on the mouth tube side of the first embodiment, and therefore its description is omitted.

Next, in FIG. 6, the mold on the mouth tube side is folded into a folding line 7.
Fold up from 1 to the mold on the loudspeaker side and fold back the main plate 3 on the mouth tube side on the mouth tube side from the upper end small arc part 31 to the front, and only the folding margin 11 and the folding margin 10 are overlapped with each other. FIG. 7 is a perspective view showing a state in which a heavy folding margin 99 is formed, the megaphone template sheet is turned over from this state, and both the loudspeaker main plate 2 on the loudspeaker side and the mouth main plate 3 on the mouthpiece side are curved. . Thereafter, the connecting pieces 13 at the left and right ends of the loudspeaker main plate 2 and the connected portions 15 are connected to form a loudspeaker tube, and subsequently the connecting pieces 12 and the connected portions 14 at the left and right ends of the mouth main plate 3 are connected. A megaphone can be completed by connecting the above and forming a mouth tube (not shown).

The material of the mold sheet of the megaphones of the above first and second embodiments is made of a flexible sheet material such as cardboard and soft synthetic resin, but the material of the mold sheet is not particularly limited in the present invention.

Further, the connecting means of the mold sheets of the megaphones of the first and second embodiments forms an adhesive layer (not shown) on the whole or a part of the upper surfaces of the connecting pieces 7a, 7b, 12, 13 and further adheres them. This is an example in which a release paper (not shown) is attached to the upper surface of the layer, and when the megaphone is used, the release paper is removed and connected to the connected parts 5a, 5b, 14, 15 to be assembled. However, the present invention does not limit the connecting means to this, and for example, the connecting portion of the mold sheet is fitted and formed in an engaging shape, or it is configured to be detachable by using a male and female hook or the like. Good.

Further, in the present invention, the shapes of the openings on the loudspeaker side and the mouthpiece side of the megaphone are not particularly limited, and may be formed in, for example, a chevron shape or a corrugated shape, or in order to strengthen the rigidity of the seat. It is also optional to form a folded piece or the like. Further, although the places and methods for attaching the straps are not shown in the drawings of the first and second embodiments, a cord passing hole or the like having a scale that does not impair the loudness performance is provided at an appropriate place of the loudspeaker barrel or the mouth barrel. It is also possible to attach a strap, but this is also optional in the present invention.

Further, although the megaphones of the first and second embodiments form one or two loudspeakers, the number of loudspeakers is not particularly limited in the present invention, for example, a substantially V-shape provided on the main plate of the loudspeaker. By adding a notch side and a connected part parallel to this, by providing a plurality of partition plates with the same number of connecting pieces that go toward the connected part corresponding to the extension, and by connecting it to the loudspeaker main plate It is also possible to increase the number of loudspeakers.

[0028]

Since the present invention is configured as described above, it has the following effects.

Since the whole process is handled as a sheet material product in terms of manufacturing, transportation, inventory, sales, etc., it is possible to stack a large amount without being bulky and it is cost-effective in various aspects.
In addition, the user can store the megaphone in a bag or the like as a single flat sheet, which is excellent in portability.

If necessary, a megaphone having a loudspeaker tube and a mouth tube can be easily assembled from a single flexible die sheet. In order to form the loudspeaker tube and the mouthpiece tube into one, double folding allowances are formed by double-folding the folding allowances on the loudspeaker tube side and the mouthpiece tube side, respectively. Further, since the joints have a constricted shape, the speaker function can be sufficiently exerted, and the constricted portion can be gripped to provide stable ease of holding.

In addition, when the megaphone is hit with a hand or the like to generate a striking sound so as to support the beat, the megaphone requires the most strength at the joint portion of the loudspeaker tube and the mouth tube, which are also the grips, Inside the joint between the loudspeaker and the mouthpiece, the folding allowances on the loudspeaker side and the mouthpiece side are doubled as double folding allowances as described above, so the constriction is the center of the megaphone body. It has rigidity and is highly shape-retaining.

Further, as shown in the first embodiment, if a mold on the side of the loudspeaker, which is composed of the main plate of the loudspeaking section having the substantially V-shaped cut side and the partition plate, is adopted, a plurality of loudspeakers are produced. A megaphone with a cylinder can be easily assembled from a single mold sheet. A megaphone that has multiple loudspeakers assembled from a megaphone mold sheet is usually in a state where the loudspeakers are separated from each other at the same interval as the width of the cut side of the main plate of the loudspeaker, but the loudspeakers are tapped with a hand or the like. In that case, the loudspeakers that have been separated due to the impact collide with each other, and a larger impact sound can be obtained. More specifically, when the loudspeakers are struck, the double folding margins formed at the bases of the respective loudspeakers receive the maximum load, causing momentary bending, and the flat shapes of the loudspeakers facing each other. The partition plates formed as they are collided with each other to generate a larger impact sound, and the rigidity is restored from the double folding margin portion to restore the shape to separate the loudspeakers from each other and hit the loudspeakers. repeat. Therefore, it is possible to enjoy by generating a loud hitting sound like a time signature. Even if the folding margin of the double formation is plastically deformed to some extent due to a strong load that exceeds its rigidity, it is formed so that it is covered by the mouth cylinder consisting of the mouth main plate. It doesn't affect much. Further, as described above, since each partition plate is formed in a flat shape, the partition plate serves as a core to give a rigidity to the loudspeaker side, and in combination with the rigidity from the double folding allowance described above, one sheet is provided. Despite being formed from the mold sheet, the megaphone as a whole can obtain much higher shape retention.

[Brief description of drawings]

FIG. 1 is a plan view showing a mold sheet of a megaphone according to a first embodiment.

FIG. 2 is a perspective view showing an assembling procedure of the first embodiment.

FIG. 3 is a perspective view showing an assembly procedure of the first embodiment.

FIG. 4 is a partial sectional view showing the completed megaphone of the first embodiment.

FIG. 5 is a plan view showing a mold sheet of a megaphone according to a second embodiment.

FIG. 6 is a perspective view showing an assembling procedure of the second embodiment.

[Explanation of symbols]

 1, 2 Loudspeaker main plate 3 Mouth part main plate 4a, 4b Partition plate 8, 10, 11 Folding allowance 77, 99 Double folding allowance 7a, 7b, 12, 13 Connecting piece 5a, 5b, 14, 15 Connected part 71 String part (folding line) A1, A2 Loudspeaker D1 mouthpiece

Claims (2)

[Claims] 1. A substantially V-shaped cut edge (18) extending from a lower end small circular arc portion (16) of a substantially large fan shape extending upward to a large upper end circular arc portion (17) around a generatrix and a parallel to this. And a loudspeaker main plate (1) in which the connected portions (5a, 5b) are provided substantially at the center, and the left and right ends of the loudspeaker main plate (1) are connected to each other via folding lines (6a, 6b). Substantially trapezoidal partition plates (4a, 4b) and the left and right partition plates (4
a, 4b) connecting pieces (7a, 7b) respectively provided on the ends via folding lines (9a, 9b), the lower end small arc portion (16) of the loudspeaker main plate (1) and its chord Division (71)
The shape of the partially expanded figure on the side of the loudspeaker, which is composed of a bow-shaped folding allowance (8), and which extends downward from the upper small arc portion (31) to the lower lower arc portion (32). Main plate (3) having a connecting piece (12) on one of the left and right ends of the base plate, and a connected part (14) on the other side, and the upper small arc portion (31) of the main plate of the base portion (3). ) And a bow-shaped folding margin (10) composed of the chord portion (71) of the mouthpiece-side partially developed figure, the bow-shaped folding margin (8) of the loudspeaker side The folding margin (8) and the folding margin (10) with the portion (71) and the chord portion (71) of the bow-shaped folding margin (10) on the mouth tube side as one folding line (71). A megaphone consisting of a single flexible sheet material that is constructed as an unfolded figure that is a symmetrical combination of Type sheet. 2. A piece of the partially expanded figure on the side of the loudspeaker is connected to one of the left and right ends of a substantially large fan shape that spreads upward from the lower small arc portion (21) to the upper upper arc portion (22). (1
3), a loudspeaker main plate (2) provided with a connected portion (15) on the other side, the lower end small circular arc portion (21) of the loudspeaker main plate (2) and its chord (71). The mold sheet of the megaphone according to claim 1, which can also be configured with an arcuate folding allowance (11).