JP2008175028A - Protective sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protective sheet which has high productivity and convenience in use at the site and is economically advantageous and improves the reliability of protection and safety. <P>SOLUTION: The protective sheet 1 is provided with a main protective sheet 11 and a plurality of subsheets 21 which are mounted on the main protective sheet 11 in such a way as to have a structure of a plurality of layers by arranging them in line at suitable intervals. The plurality of the subsheets 21 allow upper sides a as an individual part to be mounted on the main protective sheet. Respective subsheets 21 hold a state where they are arranged in line in parallel with each other and hung along the main protective sheet 11. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a protective sheet for protecting the danger of flying objects flying from a construction site or the like.

Conventionally, in the construction of buildings, condominiums, civil engineering, road construction, etc., there is a risk that dangerous materials (flying objects) such as crushed lump of on-site materials will jump out along with driving of construction machinery and the like.
If a crushed lump scatters from a construction site, jumps out to the surroundings instantly, and hits a general passerby, the risk of causing a very large injury is fully expected.
For this reason, it is generally carried out around the construction site and the like that a protective sheet for protecting the danger of flying objects is installed around the surrounding pillars.
Most protective sheets used at construction sites are made of vinyl or fabric from the viewpoint of convenience and economy.
However, when the protective sheet is used in a completely fixed state including the upper and lower sides, the shock absorbing action is low, so it may be broken depending on the speed and weight of the flying object. May not be able to fulfill.

If the protective sheet made of vinyl or fabric is so-called suspended so that the lower side is free, the protective sheet itself is likely to be deformed when a flying object collides. It is possible.
However, since the protective sheet has a drawback that it is turned up by the wind when the lower side is made free so as to be hung, sufficient attention is required.
However, if the protective sheet becomes large, the weight of the protective sheet will increase accordingly, so the degree of freedom of deformability of the protective sheet itself will be reduced, and the effect of absorbing the impact of flying objects can hardly be expected. There is a high possibility of tearing.
On the other hand, as a conventional example for reducing the risk, for example, an apron having a bulletproof and blade-proof material is proposed by Japanese Patent Application Laid-Open No. 11-118395 (Patent Document 1).
JP 11-118395 A

Specifically, the apron of the above-described conventional example is to contain a bulletproof / bladeproof material having a shape covering the front side and the side of the abdomen from the chest of a person in the bag portion of the upper front hanging portion.
However, this configuration requires a process of first producing the bag part and then housing the bulletproof / bladeproof material, so the process is complicated, the productivity is low, and it can be used at construction sites, etc. There was a problem that convenience was low.
In addition, since a bulletproof / bladeproof material different from the apron material is used, there is a problem that the cost tends to be high, and it is disadvantageous in terms of economy.

Accordingly, an object of the present invention is to provide a protective sheet that is highly productive and convenient for field use, is advantageous in cost, and greatly improves the reliability and safety of protection.

In order to solve the above problems, the protective sheet of the present invention is a protective sheet that protects against the danger of flying objects, and is composed of a main protective sheet and a structure of a plurality of layers arranged at appropriate intervals on the main protective sheet. A plurality of sub-sheets mounted in such a manner that a part of each of the plurality of sub-sheets is mounted on the main protective sheet.
Further, in the protective sheet of the present invention, the part for mounting each of the sub-sheets is an upper side of each sub-sheet, and the sub-sheets are arranged in parallel to the main protective sheet. The suspended state is maintained.
Furthermore, the protective sheet of the present invention is a protective sheet for protecting the danger of flying objects,
It is characterized by comprising a plurality of sheets that are mounted so as to have a structure of a plurality of layers arranged at appropriate intervals.

According to the protective sheet of the present invention, since each of the plurality of sub-sheets is partially attached to the main protective sheet, the productivity and the convenience of use on the site are high, which is economically advantageous. is there.
In addition, even if a flying object breaks the main protective sheet and jumps, each sub-sheet is freely deformed to stop the flying object from flying, so that the reliability and safety of the protection are greatly improved.
Further, according to the protective sheet of the present invention, the part for mounting each sub-sheet is an upper side of each sub-sheet.
For this reason, the protective action of each sub-sheet is improved with its own weight, and the returnability after deformation of each sub-sheet is good due to its own weight, convenience during use, and stability and reliability during use. To improve.
In addition, even if a flying object breaks the main protective sheet and jumps, each sub-sheet is freely deformed to stop the flying object from flying, so that the reliability and safety of the protection are greatly improved.
Furthermore, according to the protective sheet of the present invention, it is composed of a plurality of sheets that are arranged so as to have a structure of a plurality of layers arranged at appropriate intervals, so that productivity and convenience for use on the site are high and economical. Is also advantageous.
Moreover, even if the flying object breaks the sheet and tries to jump, each sheet is freely deformed to stop the flying object from jumping, so that the reliability and safety of protection are greatly improved.

Hereinafter, the present invention will be described based on examples thereof with reference to the drawings.

A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an explanatory diagram conceptually illustrating the configuration of the protective sheet 1 according to the first embodiment of the present invention. FIG. 2 is a main portion on one end side when the protective sheet 1 according to the first embodiment of the present invention is used. It is a perspective view which shows the structure.

As shown in FIGS. 1 and 2, the protective sheet 1 includes a main protective sheet 11, a plurality of sub-sheets 21 mounted on one side of the main protective sheet 11 so as to have a multi-layer structure arranged at appropriate intervals. Is provided.
The main protective sheet 11 is made of vinyl, cloth, aluminum, cloth made of PBO fiber or ultra-high-strength polyethylene fiber, or water-repellent cloth, and is a general square having flexibility of free deformation. The vertical and horizontal dimensions are arbitrary.
The upper and lower parts of the main protective sheet 11 or the entire circumference on the outer side are bound to a pillar 31 or a pipe 31 of a frame as shown in FIGS. 3 and 4, for example, with vinyl or resin strings. A plurality of openings 12 are formed so that they can be mounted.
The construction site is a construction site such as construction and demolition of buildings and condominiums, civil engineering, and road construction.

The plurality of sub-sheets 21, like the main protective sheet 11, are sheets having flexibility of free deformation such as made of vinyl, cloth, or aluminum.
The sub-sheet 21 may use a material different from that of the main protective sheet 11.
The plurality of sub-sheets 21 have, for example, a width equal to the width of the main protective sheet 11, and the vertical width is a vertical width of an arbitrary number with respect to the vertical width of the main protective sheet 11.
Each sub-sheet 21 is mounted on one side, which is the outer surface side of the main protective sheet 11, in the vertical direction at appropriate intervals.
The fact that each sub-sheet 21 is arranged on one side of the main protective sheet 11 at an appropriate interval means that when the main protective sheet 11 is in a horizontal state, each sub-sheet 21 is also in a vertical state with the main protective sheet 11 in a horizontal state. It means to line up in multiple.

In particular, as shown in FIG. 2, each appropriate interval means that each of the sub-sheets 21 is relatively lower on the lower side b of each upper-side sub-sheet 21 and on the upper side of the lower-side sub-sheet 21. a
It is the space | interval which can overlap outside.
For this reason, as shown in FIGS. 1 and 2, each sub-sheet 21 is arranged so that the lower side b of each upper-side sub-sheet 21 overlaps the outer side of the upper side a of the lower-side sub-sheet 21. The protective sheet 11 is mounted on one side of the protective sheet 11 side by side in the vertical direction.
In addition, each appropriate space | interval is not necessarily the same space | interval, Furthermore, the dimension which the lower side b of each subsheet 21 and the upper side a overlap is not limited to the dimensional example of illustration. However, any dimensions such as a longer length may be used.
However, the sub-sheets 21 may be mounted so that the lower side b and the upper side a are not overlapped and become a single plane.

When each sub-sheet 21 is mounted on the main protective sheet 11, only the upper side “a” of each sub-sheet 21 is mounted on the main protective sheet 11 as a part of each sub-sheet 21.
Each sub-sheet 21 has its upper side a attached to the main protective sheet 11 so that when the protective sheet 1 of the present invention is used, as shown in FIG. Maintain the state of being laid side by side.
As a method of attaching each sub-sheet 21 to the main protective sheet 11, there is a method of sewing, for example. However, as the mounting method, any method other than heat welding, adhesive bonding, ultrasonic bonding, locking metal fittings, hooks, hook-and-loop fasteners, etc. may be used.
On the other hand, the state shown in FIG. 1 shows a state in which the mounting position side of each sub-sheet 21 with respect to the main protective sheet 11 can be flexed outward and can be freely deformed. The fact that each sub-sheet 21 can be freely deformed is a very important point and will be described in detail later.
Each of the sub-sheets 21 is mounted on one side, which is the outer surface side of the main protective sheet 11, at appropriate intervals, thereby forming a two-layer structure as a plurality of layers together with the main protective sheet 11.

FIG. 3 is a side view illustrating a side surface when the protective sheet 1 is used, and FIG. 4 is a side view illustrating a protective action when the protective sheet 1 is used.
For example, it is assumed that the flying object 32 or the like scatters at the construction site, and one flying object 32 comes to the protective sheet 1 as shown in FIG.
At that time, when a flying object 32 such as one crushed mass breaks through the main protection sheet 11 of the protection sheet 1 and tries to jump to the outside world, the flying object 32 is impacted on the sub-sheet 21 as shown in FIG. Give a pressing force.
Here, since the secondary sheet 21 is suspended from the main protective sheet 11 and has free deformability, the secondary sheet 21 is deformed together with the pressing force of the flying object 32 as shown in FIG. The impact and the pressing force are absorbed, and the flying object 32 is stopped.
The flying object 32, which has been stopped by the free deformation of the sub-sheet 21, falls by gravity without causing danger to passers-by in the outside world.

As described above, since the sub-sheet 21 is suspended from the main protective sheet 11 and has free deformability, the impact of the flying object 32 can be absorbed and dropped by the free deformability.
For this reason, the sub-sheet 21 has the characteristic of greatly reducing the possibility of being broken by the impact of the flying object 32 due to the impact absorbing action due to its deformability, and the reliability for preventing the risk of the flying object 32 jumping to the outside. Improve sex dramatically.
In particular, since each sub-sheet 21 has a lower side b of each upper-side sub-sheet 21 that overlaps an outer side of the upper side a of the lower-side sub-sheet 21, as shown in FIG. Even when the flying object 32 collides with the upper immediate vicinity A of the upper side, it is reliably deformed.
For this reason, the protective sheet 1 prevents the danger that the flying object 32 jumps to the outside without any weak points over the entire surface, and greatly improves the reliability of safety.
Even if a part of the main protective sheet 11 has a hole due to the flying object 32, the probability that another flying object such as a crushed lump will re-enter the hole is very low. Can be maintained for a long time.

On the other hand, since the secondary sheet 21 is suspended from the primary protective sheet 11 and has free deformability, the protective sheet 1 is surely restored to its original weight by its own weight after absorbing the impact of the flying object 32 projecting. Return to the attitude, always keep good appearance from the outside world.
Moreover, since the material of the sub-sheet 21 is the same as the material of the main protective sheet 11, the protective sheet 1 is very light, and is very convenient for use at the site and convenient for storage when folded.
Moreover, since the protective sheet 1 is configured by mounting the sub sheet 21, the manufacturing process is simple, the manufacturing process is very good, and the cost is very advantageous.
Furthermore, the protective sheet 1 can be used even when the lower side of the main protective sheet 11 is bound to each other because the sub-sheets 21 sufficiently exert a protective action when used on the site, and therefore, the problem is that the protective sheet 1 is swung up by the wind. Can also be prevented.
The protective sheet 1 can be stretched around any site such as a construction site, but can be used not only as a side surface but also as a ceiling surface. At this time, the sub-sheet 21 is also located on the outside world side, and effectively acts for preventing danger.

Next, a second embodiment of the present invention will be described.
FIG. 6 is a side view showing a side surface when the protective sheet 2 according to the second embodiment of the present invention is used. In addition, in the protection sheet 2 of Example 2, the same code | symbol is attached | subjected to the same part as Example 1, and detailed description is abbreviate | omitted.
As shown in FIG. 6, the plurality of sub-sheets 22 in the protection sheet 2 maintain a state in which the plurality of sub-sheets 22 are arranged in a vertical direction along the main protection sheet 11 so as to overlap three.
Each of the sub-sheets 22 is also a sheet having high flexibility of free deformation, such as a product made of vinyl, fabric, or aluminum, like the main protection sheet 11.
Each of the three-layered sub-sheets 22 is arranged such that the lower side of the relatively upper three-layer sub-sheet 22 overlaps the upper side of the lower-layer three-layer sub-sheet 22. Are arranged in a vertical direction on one side of the outer side of the.
As described above, the protective sheet 2 has a four-layer configuration as a plurality of layers by the main protective sheet 11 and each of the three stacked sub-sheets 22, but the other configurations are the same as the configuration of the protective sheet 1 described above. .
Since the protective sheet 2 has a four-layer configuration with the main protective sheet 11 and the three-layered sub-sheets 22, the protective action is further enhanced.
Referring to FIG. 6, the protection sheet 2 can be imagined to be bulky by the three stacked sub-sheets 22, but this is for the convenience of drawing and is actually thin.

Next, Embodiment 3 of the present invention will be described with reference to FIG.
It consists of a plurality of sheets 41 mounted so as to have a structure of a plurality of layers arranged at appropriate intervals.

The present invention can be used in fields such as a protection sheet and a bulletproof curtain at a construction site such as building construction, demolition, and civil engineering.

It is explanatory drawing which illustrates notionally the structure of the protection sheet of Example 1 of this invention. It is a perspective view which shows the structure of the principal part at the one end side at the time of use of the protection sheet of Example 1 of this invention. It is a side view which shows the side surface at the time of use of the protection sheet of Example 1 of this invention. It is a side view explaining the protective effect at the time of use of the protection sheet of Example 1 of this invention. It is a side view explaining the special example of the protective effect at the time of use of the protective sheet of Example 1 of this invention. It is a side view which shows the side surface at the time of use of the protection sheet of Example 2 of this invention. It is a side view which shows the side surface at the time of use of the protection sheet of Example 3 of this invention.

Explanation of symbols

1, 2 Protective sheet 11 Main protective sheet 12 Opening 21, 22 Sub sheet 31 Pipe 32 Flying object 41 Sheet A Near the upper extreme of the upper side of the sub sheet a Upper side b Lower side

Claims (5)

A protective sheet that protects against the danger of flying objects,
A main protective sheet;
A plurality of sub-sheets mounted on the main protective sheet so as to have a multi-layer structure arranged at appropriate intervals, and
With
A part of each of the plurality of sub-sheets is attached to the main protection sheet. The part for each mounting of each sub-sheet is the upper side of each sub-sheet,
2. The protection sheet according to claim 1, wherein each of the sub-sheets maintains a state in which the sub-sheets are suspended in parallel along the main protection sheet.   3. The protective sheet according to claim 1, wherein the plurality of sub-sheets maintain a state in which a plurality of sub-sheets are arranged in parallel along the main protective sheet and are overlaid by a plurality.   2. The plurality of sub-sheets suspended from the main protection sheet, wherein the lower side of the upper sub-sheet is relatively overlapped with the upper side of the lower sub-sheet. To 3. The protective sheet according to any one of 3 to 4. A protective sheet that protects against the danger of flying objects,
A protective sheet comprising a plurality of sheets mounted so as to have a structure of a plurality of layers arranged at appropriate intervals.

Images