JPH0453408Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a simple shielding device.

[Conventional technology]

In a room with equipment that dislikes dust,
When carrying out construction work that generates dust, conventionally steel materials,
A framework is formed by assembling frame materials made of wood, etc., and a shielding sheet is attached to this to form a shielding device, and by covering the construction site or the equipment itself with this shielding device, the equipment is protected from dust. A method has been adopted to protect against

However, with the above conventional shielding devices, the framework materials may come into contact with equipment and damage the equipment when the framework materials are brought in, it takes time to assemble the framework, and the work of assembling the framework materials to form the framework is difficult. There were problems such as the danger to workers as it involved work.

[Problem that the invention attempts to solve]

The present invention was developed in view of the above points, and aims to provide a shielding device that is easy to assemble and does not cause damage to equipment or expose workers to danger during assembly work. .

That is, the present invention is configured to allow air to be injected and discharged, and is foldable when air is discharged, and includes an inner tube made of a thermoplastic synthetic resin sheet and a laminated sheet of a vinyl chloride resin sheet/cloth/a vinyl chloride resin sheet. A frame body consisting of a flexible air tube having a double structure with an outer tube filled with air; The gist of this simple shielding device is that the cover sheet has a residual portion formed at its lower edge.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows an embodiment of a simple shielding device 1 of the present invention, where 2 is a frame body and 3 is a transparent cover sheet attached to cover the frame body 2. The framework body 2 is
It consists of two inverted U-shaped air tubes 4a, 4b, and an air tube 4c that communicates with the air tubes 4a, 4b and is connected to both air tubes 4a, 4b. It is made of a flexible material and is configured to allow air to be injected and discharged from air plugs 5 provided at four locations, and is foldable when air is being discharged. 2. FIG. 2 is a longitudinal sectional view showing the configuration of the air tubes, and the air tubes 4a, 4b, 4c are made of vinyl chloride resin sheets
It has a double structure in which an inner tube 12 made of a thermoplastic synthetic resin sheet is provided inside an outer tube 11 made of a laminated sheet of cloth/vinyl chloride resin sheet. The air tube only needs to be formed so that air can be injected and discharged from the air plug, but as shown in FIG. 2, the air plug 5 is connected to the inner tube 12 to fill air into the inner tube 12. It is preferable to form it as follows. The air tubes 4a, 4b,
A fixing band 7 is provided on each leg 6 of the framework body 2 formed by filling air into the frame 4c.
The frame body 2 is fixed to the floor by attaching it to the floor using, for example, adhesive or double-sided tape.

The transparent cover sheet 3 attached to cover the frame body 2 is made of a polyvinyl chloride sheet, a polyethylene sheet, a polypropylene sheet, or the like, which is imparted with electrical conductivity and electromagnetic shielding properties. Transparent sheets with conductivity and electromagnetic shielding properties are obtained by mixing antistatic materials into the sheet or by forming a coating film with conductive paint on the sheet. Examples include things. Above cover sheet 3
In order to more effectively prevent dust, the lower end edge is provided with a length such that a slight residual portion 3a is formed. It is preferable that a fastener 8 or the like be provided at the doorway provided in the cover sheet 3 so that the doorway can be opened and closed. For example, a plastic fastener is used as the fastener 8, but the material of the fastener 8 is not particularly limited, and materials other than the fastener 8 can be used as long as they can open and close the entrance/exit. In addition, the cover sheet 3 is provided with an exhaust port 9 having an air filter that can be connected to an exhaust fan (not shown) through a duct, and an intake port 10 having an air filter. This is preferable because it enables the work of

The frame body 2 and the cover sheet 3 may be joined together by a joining means such as high frequency joining, but they may be separate bodies. Air tubes 4a, 4b, 4c forming the framework 2
is composed of a laminated sheet of polyvinyl chloride/cloth/polyvinyl chloride called so-called vinyl chloride tarpaulin and a thermoplastic synthetic resin sheet. However, when the frame body 2 is bonded and formed by high-frequency bonding, tarpaulin alone is used as the material. As the resin at the high-frequency joint becomes thinner due to melting, the inner cloth is easily exposed and air leaks occur easily at that part. Therefore, the material for the air tube is a vinyl chloride resin sheet/cloth/cloth that is resistant to damage. When a laminated sheet of vinyl chloride resin sheets is used for the outer tube 11 and a thermoplastic synthetic resin sheet is used for the inner tube, and the structure is configured as described above, the inner tube 12 with high airtightness at the high frequency joint part becomes a damage-resistant outer tube. Protected by tube 11. In such a tube configuration,
In addition to eliminating air leakage from high-frequency joints and damage to the framework caused by abrasion or contact with sharp objects, the outer tube 11, which does not stretch easily, can prevent the expansion of the inner tube 12, which tends to expand during filling. Since the pressure is suppressed, the internal pressure of the inner tube 12 can be increased, and since the framework itself has rigidity, it has the advantage that the framework becomes extremely strong.

The shielding device 1 of the present invention is not limited to the shape shown in the above embodiment, but can be attached closely to the wall 13 when performing construction on the wall 13 or window 14 in the room, as shown in FIG. 3, for example. It is also possible to use one formed in a certain shape.

The device 1 of the present invention includes a framework 2 and a cover sheet 3.
In the case of a structure in which the shielding device 1 is joined and integrated, first, the folded device 1 is laid on the floor of the place where the shielding device 1 is to be installed, and then, as shown in FIG. 4, the air tube 4a, 4b,
It can be easily assembled by filling the tube 4c with air and fixing the legs 6 of the air tube, which forms the framework 2, to the floor. Furthermore, even in the case where the frame body 2 and the cover sheet 3 are constructed separately, they can be easily assembled by forming the frame body 2 in the same manner as described above and then covering the frame body 2 and attaching the cover sheet 3. I can do it.

When filling the air tubes 4a, 4b, 4c with air to form the framework 2, for example, as shown in FIG. 5, air can be injected from any of the air plugs 5, and an air plug 5 that is located in a position that is easy to perform air injection can be selected as appropriate, making assembly work by air injection easier. Not only is this easy, but also the air can be quickly discharged by removing all the air plugs 5 when the air is discharged when folded and stored.

The shielding device 1 of the present invention can be used to cover the construction site when dust-generating construction is performed in a room where dust-averse equipment is installed, or to cover the dust-averse equipment itself. Can be used. In addition, if a cover sheet 3 that is conductive and has electromagnetic wave shielding properties is used, it can be used as a work space for handling ICs, etc., a work area for handling flammable solvents, and can be used to cover electronic equipment to prevent electronic equipment from malfunctioning, preventing intrusion of electromagnetic waves. It can also be used as a shield to prevent electromagnetic waves from escaping or to cover the source of electromagnetic waves to prevent leakage from them.

[Effect of idea]

As explained above, in the simple shielding device of the present invention, the framework body is made of a flexible air tube, the framework body is formed by filling the air tube with air, and the framework body is covered with a transparent Because it has a structure with a cover sheet attached, it is flexible and lightweight, and there is no risk of damaging equipment if it comes into contact with equipment in the room during assembly, and air is injected into the air tube with an air pump. Since the frame body can be easily formed with only a few steps, the assembly can be easily performed, and the work can be carried out safely since there is virtually no need to work at heights. Further, since the cover sheet is made of a transparent material, the situation inside the shielding device and the situation outside from inside the shielding device can be confirmed, which has the effect of facilitating work inside and outside the shielding device. Furthermore, the air tube constituting the framework has a double structure consisting of an outer tube made of a laminated sheet of vinyl chloride resin sheet/cloth/vinyl chloride resin sheet and an inner tube made of a thermoplastic synthetic resin sheet. Therefore, the outer tube is made of a laminated sheet of PVC resin sheet/cloth/PVC resin sheet that is resistant to damage, and protects the inner tube from damage to the inner tube due to abrasion or contact with sharp objects. Air leakage can be prevented without any problems.

Furthermore, if a thermoplastic synthetic resin sheet is used for the inner tube, the airtightness of the joint by high-frequency bonding will be high, and there will be no fear of air leakage from the joint. Moreover, by being formed in a double structure,
When the framework is filled with air, the outer tube, which is made of a laminated sheet of vinyl chloride resin sheet/cloth/vinyl chloride resin sheet, which has less elongation, suppresses the expansion of the inner tube, which is made of a thermoplastic synthetic resin sheet that is easy to stretch. Since the internal pressure of the inner tube can be increased and the rigidity of the framework itself can be improved, it is advantageous that there is no need to provide an air tube around the bottom of the framework. In addition, the simple shielding device of the present invention has conductivity and electromagnetic wave shielding properties added to the transparent cover sheet, so it has excellent antistatic properties and electromagnetic wave shielding properties. Therefore, it can effectively prevent dust and has excellent dustproof properties.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with Fig. 1 being a perspective view of one embodiment of the inventive device, Fig. 2 being a longitudinal sectional view showing the configuration of the air tube, and Fig. 3 showing another embodiment of the inventive shielding device. A perspective view showing the embodiment, and FIG. 4 are explanatory views showing the assembly process of the shielding device. DESCRIPTION OF SYMBOLS 1... Simple shielding device, 2... Frame body, 3... Cover sheet, 3a... Remaining part, 4a, 4b, 4c
...Air tube, 5...Air plug, 11...Outer tube, 12...Inner tube.

Claims (1)

[Scope of utility model registration request] It is configured to allow air to be injected and discharged, and is foldable when air is being discharged.The inner tube is made of a thermoplastic synthetic resin sheet and the outer tube is made of a laminated sheet of vinyl chloride resin sheet/cloth/vinyl chloride resin sheet. A frame body formed by filling air into a flexible air tube having a double structure, and a transparent cover sheet attached to cover the frame body and having conductivity and electromagnetic shielding properties. A simple shielding device comprising: a cover sheet having a residual portion formed at a lower edge thereof.