JPH061646U - Lightning protection equipment for membrane roof structures - Google Patents

Abstract

(57) [Summary] [Structure] A film roof structure in which a plurality of sheet-shaped roof members 15 are stretched to form a roof portion, and the roof member 15 is sandwiched between a bracket 11 and a clamp metal member 12, And,
The clamp hardware 12 has a structure in which a cover 25 and an end portion of the cover 25 are covered with a gasket 20 fitted therein.
The upper surface of the gasket 20 is continuous with the ridge conductor 2 in the longitudinal direction.
In the lightning protection equipment configured to mount 3,
3 is attached to the gasket 20 by using the conductor attachment metal fitting 26. [Effect] Since the on-building conductor 23 is attached using the conductor mounting bracket 26, the on-building conductor 23 and the gasket 20 can be easily replaced, and since it is attached separately from the upper surface of the gasket 20, during lightning strikes. It is possible to prevent the damage of the.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 In this invention, a sheet-shaped membrane such as glass fiber cloth is adopted as a roof material, and this is stretched between arch-shaped roof structural materials to form a roof portion, and a roof structure is provided with a ridge conductor. It relates to lightning protection equipment to be laid alongside.

[0002]

[Prior art]

 When installing a ridge conductor type lightning arrester in such a membrane roof structure, there is a method of directly attaching the ridge conductor to the upper surface of the gasket of the roof material joint.

In the structure shown in FIG. 6, a roofing material 15 is sandwiched between a bracket 11 and a clamp metal piece 12, and the clamp metal piece 12 is covered with a cover 25. Further, an end portion 21 of the cover 25 has an upper surface. In this structure, the ridge-top conductor 23 is directly attached to the upper surface of the gasket 20 in the form of embedding the lower half as shown in the figure to the membrane root structure having a structure fitted to the exposed gasket 20. Kaihei 1-150867).

[0004]

[Problems to be solved by the device]

 In such a conventional structure, since the ridge conductor 23 is directly attached to the gasket 20 made of an insulating material such as synthetic rubber, it is difficult to replace the ridge conductor 23 and the gasket 20, and a lightning strike occurs. There was a problem that the gasket 20 was damaged at that time. In consideration of the above points, the present invention intends to provide a lightning protection device for a membrane roof structure that can easily replace the conductors and gaskets on the ridge and prevent damage during lightning strikes. is there.

[0005]

[Means for Solving the Problems]

 The lightning protection device for a membrane roof structure according to the first aspect of the present invention is a membrane roof structure in which a plurality of sheet-shaped roof materials are stretched to form a roof portion, and the roof material is a bracket and a clamp. Lightning protection with a structure in which it is sandwiched between metal fittings, and the clamp metal fittings are covered with a cover and a gasket that fits the end of this cover, and the ridge conductor is continuously attached to the upper surface of the gasket in the longitudinal direction. In the facility, the on-building conductor is attached to the gasket by using a conductor attachment fitting so as to be separated from the gasket.

[0006]

[Action]

 According to the first aspect of the invention, since the on-building conductor is attached by using the conductor mounting bracket, the on-building conductor and the gasket can be easily replaced, and since it is attached away from the upper surface of the gasket, it is possible to prevent the It is possible to prevent damage.

[0007]

【Example】

 Hereinafter, the present invention will be described with reference to an illustrated embodiment. FIG. 1 is a perspective view of a membrane roof structure. The membrane roof structure 1 is composed of a frame portion 2 and a roof portion 3.

The frame portion 2 has a structure in which arch frames 4 and 4 made of prestressed concrete are installed in parallel in a state in which they are separated from each other, and they are connected by a horizontal arch.

FIG. 2 shows a partial perspective view of the roof portion. The roof portion 3 is installed so as to cover the frame portion 2. As the roof structural material, space frames 6 made of arched steel pipes are vertically and horizontally crossed and assembled so as to cover the entire frame portion 2. Of the vertical and horizontal space frames 6, 6, the upper chord member 8 made of steel pipe, which is also a roof structure member, is installed on the space frame parallel to the arch frames 4, 4 of the frame portion 2 via the bundle 10. Has been done.

FIG. 3 shows a vertical cross-sectional view with the ridge conductor attached. The bracket 11 is installed on the upper chord member 8, and the clamp metal fitting 12 for sandwiching the roof material 15 and the gasket fitting 17 are fixed on the bracket 11. The gasket 20 in which the end portion of the cover material 25 covering the clamp metal fitting 12 was fitted was attached to the gasket fixture 17, and the ridge conductor 23 was attached to the gasket 20 using the conductor fixture 26. It has a structure.

A bracket 11 having a T-shaped cross section is fixed to the upper chord member 8 continuously by welding on the upper chord member 8. The clamp metal fittings 12 are fixed to the left and right sides or one side in the width direction of the bracket 11 by bolts and nuts 13. The clamp hardware 12 is continuous in the longitudinal direction of the upper chord member 8.

The roof material 15 sandwiched between the bracket 11 and the clamp metal fitting 12 can be made of Teflon-coated glass fiber cloth or the like. The sheet-shaped roof material 15 has rubber cores 16 and 16 having circular cross sections at the left and right edges. It is formed continuously in the direction. The roofing material 15 is sandwiched between the bracket 11 and the clamp metal fitting 12 together with the end of the cover material 25 covering the clamp metal fitting 12 with the rubber core 16 inside the end of the clamp metal fitting 12.

The gasket mounting tool 17 is fixed to the upper surface of the clamp metal object with bolts and nuts 13. The gasket fitting 17 is continuous in parallel with the clamp hardware 12. A gasket 20 made of an insulating material such as synthetic rubber is fitted into the gasket fitting 17. Recesses 21, 21 are formed on the left and right side edges of the gasket 20, and the ends of the cover members 25, 25 for covering the left and right clamp metal parts 12, 12 are fitted in the recesses 21, 21.

The conductor mounting member 26 has a mounting portion 26 a and a rising portion 26 b, is formed in an L shape as a whole, and the mounting portion 26 a is mounted on the upper surface of the gasket 20 with a screw 27. . A large number of the conductor mounting brackets 26 are mounted at predetermined intervals in the length direction of the gasket 20. On the upper portion of the rising portion 26b of the conductor fitting 26, a clamp fitting 28 having a ring-shaped holding portion 28a for supporting the on-ridge conductor 23 via the insulator 30 is provided by a bolt nut 29 made of brass or the like. It is fixed by. The conductor mounting bracket 26 and the clamp bracket 28 are made of, for example, stainless steel.

As described above, the ridge conductors 23 are arranged in parallel with the plurality of roof portions 3 as shown in FIG. The raised conductor 23 is connected to a conductor provided along the outer periphery of the roof portion 3 and is connected to a ground electrode by a pull-down conductor.

In the above-described embodiment, the L-shaped conductor mounting bracket 26 is used. However, if the structure is such that the ridge-top conductor 23 is mounted separately from the gasket 20, the shape of the conductor mounting bracket 26 is As shown in FIG. 5, an inverted T-shaped mounting portion 31a and a rising portion 31b are provided, and the mounting portion 31a is fixed to the upper surface of the gasket 20 with two screws 32, or another shape is used. Good. In FIG. 5, the same members as those in FIG. 3 are designated by the same reference numerals.

[0017]

[Effect of device]

 As described above, the present invention is a membrane roof structure in which a plurality of sheet-shaped roofing materials are stretched to form a roof portion, the roofing material is sandwiched between a bracket and a clamp metal fitting, and the clamp metal fitting is In a lightning protection device with a structure in which a cover and a gasket fitted to the end of this cover are covered, and the ridge conductor is continuously attached to the upper surface of the gasket in the longitudinal direction, the ridge conductor is attached to the conductor. It is configured to be attached using a metal fitting so as to be separated from the gasket, and the following effects can be obtained. 1. Since the on-building conductor is attached to the upper surface of the gasket using the conductor mounting bracket, the on-building conductor can be easily installed and replaced. 2. Since the on-building conductors are mounted directly on the gasket rather than directly on it, damage to the gasket is prevented even during lightning strikes.

[Brief description of drawings]

FIG. 1 is a perspective view of a membrane roof structure according to the present invention.

FIG. 2 is a partial perspective view of a roof portion of the membrane roof structure according to the present invention.

FIG. 3 is a vertical cross-sectional view of a membrane roof structure according to the present invention in which a ridge conductor is attached.

FIG. 4 is a plan view of a membrane roof structure according to the present invention.

FIG. 5 is a vertical cross-sectional view of the membrane roof structure according to the present invention with the ridge conductor attached.

FIG. 6 is a schematic vertical sectional view showing a conventional example.

[Explanation of symbols]

 1 Membrane roof structure 2 Frame part 3 Roof part 4 Arch frame structure 6 Space frame 8 Upper chord material 11 Bracket 12 Clamp hardware 15 Roofing material 17 Gasket fitting 20 Gasket 23 Top conductor 25 Cover material 26 Conductor mounting bracket 27 Bolt 29 Bolt nut

Claims (1)

[Scope of utility model registration request] 1. A membrane roof structure in which a plurality of sheet-shaped roofing materials are stretched to form a roof portion, the roofing material is sandwiched between a bracket and a clamp metal fitting, and the clamp metal fitting is a cover and this. In a lightning protection device having a structure in which the end of the cover is covered with a fitted gasket and further having a structure in which a ridge conductor is continuously attached to the upper surface of the gasket in the longitudinal direction, Lightning protection equipment for membrane roof structures characterized by being installed separately from the gasket.