JPH0352323Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a watertight installation device for fixing bolts for attaching columns, etc. on sheet waterproof construction surfaces, and more specifically, water tanks, heat storage tanks, pools, balconies, rooftops with waterproof sheets. This invention relates to a device for erecting fixing bolts in a watertight manner for attaching pillars of ramps, fences, etc. to the floors and walls of buildings, etc.

Conventional technology and problems In order to attach fences, ramps, etc. to the floor or wall of a concrete structure on which a waterproof sheet made of soft vinyl chloride, etc. has been laid, it is necessary to install fence supports, etc. through the waterproof sheet. Fixing bolts for installation must be fixed in an upright position.
For this reason, sufficient consideration must be given to waterproofing the portion where the bolt passes through and connects with the waterproof sheet.

Conventionally, such a watertight erecting structure of fixing bolts includes, for example, a bolt 31 whose lower part is buried and fixed in a concrete body A, and a waterproof sheet 32 laid on the surface of the concrete body A, as shown in FIG.
The area around the bolt through holes 33 is watertightly sealed with a sealant 34, and a waterproof sheet is placed on a sheet fixing joint plate 35 made of a PVC steel plate or the like fixed on the concrete frame A side. Generally, means for water-tightly bonding the peripheral portion of the bolt through hole No. 32 with an adhesive is often adopted. However, when using this method of waterproofing using the sealant 34, not only is water leakage likely to occur due to improper installation of the sealant 34, but also water leakage may occur due to deterioration or damage to the sealant 34 itself over time. The drawback was that it could not maintain a complete waterproof effect for a long period of time. In addition, especially when the fixing bolt 31 is made of stainless steel, there is no sealing material 34 suitable for this, so the above-mentioned upright structure cannot be adopted.

Therefore, as another method to eliminate such drawbacks, as shown in FIG. A method has been proposed in which the portion of the bolt through hole 33 is waterproofed by pressing from above with a nut 38 screwed onto the bolt 31 via a presser plate 37 made of a highly rigid material such as has been adopted. However, in this case, there was a problem in that water could not be prevented from entering from the threaded portion between the bolt 31 and the nut 38, that is, between the female and male screw portions, and a complete waterproof effect could not be achieved.

Means for Solving the Problems This invention proposes the following structure in order to solve the above problems.

That is, a female threaded cylinder having a flange at the upper end is buried in a concrete structure with the flange positioned on the surface of the structure, and a waterproof sheet is laid on the surface of the structure above the flange, and a retaining plate is completely placed on the bottom surface. A nut, which is watertightly fixed by circumferential welding, is also fixed watertightly by circumferential welding to the outer periphery of the intermediate part of the length of a fixing bolt for attaching a support column, etc., and the lower part of the bolt penetrates the bolt of the waterproof sheet. Fixation in the sheet waterproofing construction surface in which the peripheral portion of the bolt through hole of the waterproof sheet is clamped and fixed between the collar and the holding plate by being screwed into the female thread cylinder through the hole and tightened with the nut. The present invention provides a watertight installation device for bolts.

Embodiments Next, the configuration of this invention will be further explained based on illustrated embodiments.

In Fig. 1, reference numeral 1 indicates a fixing bolt for attaching a support, etc., 2 indicates an internally threaded tube for fixing the bolt 1 upright on the concrete frame A side, and 8 indicates a screw tube with a thickness of 1.0 to 1.0, which is placed under tension on the concrete frame A side. This is a waterproof sheet made of approximately 2.0mm vinyl chloride sheet or rubber sheet.

A nut 3 for tightening the bolt is attached to the outer periphery of the intermediate portion of the fixing bolt 1, and the upper end is welded to the entire circumference of the bolt 1, so that the nut 3 is fixed integrally and watertightly. has been done. Further, on the lower surface side of this nut 3, a holding plate 4 made of a rigid metal plate such as iron or stainless steel with a thickness of about 2 to 5 mm is stacked, and these are also fixed to each other in a watertight manner by welding the entire circumference. ing. Reference numerals 5 and 6 indicate watertight welds between the bolt 1 and the nut 3, and between the nut 3 and the holding plate 4.

On the other hand, the female threaded tube 2 has a flange 7 fixed to the upper end by welding or the like, and the flange is positioned on the surface A of the concrete body and is embedded and fixed within the body.

After the female threaded cylinder 2 is buried, the waterproof sheet 8 is laid on the concrete body A side on the collar 7, and bolt through holes 9 are drilled at the corresponding positions of the female threaded cylinder 2, and bolt through holes 9 are made on the lower surface of the surrounding area. A sheet packing 1 with a thickness of about 3 to 5 mm is placed between the tsuba 7 and the tsuba 7.
0 is inserted. After the waterproof sheet 8 is laid, the lower part of the bolt 1 is inserted into the through hole 9.
The bolt 1 can be installed upright by being screwed into the female threaded cylinder 2 through the bolt 1.
is strongly tightened by turning the nut 3, so that the peripheral part of the bolt through hole 9 of the waterproof sheet 8 is placed between the collar 7 of the female threaded cylinder 2 and the holding plate 4 on the lower surface side of the nut 3. Packing 1 each
It is strongly clamped and fixed via pins 0 and 11. Note that the packings 10 and 11 may be omitted and the waterproof sheet 8 may be sandwiched directly between the collar 7 and the presser plate 4.

As described above, the bolt 1 is erected and fixed through the waterproof sheet 8, and the stay 12 for attaching the pillar etc. is fastened and fixed on the nut 3 with the mounting nut 14 via the washer 13 as appropriate. A fence support 15 and the like are attached to the stay 12 with bolts and nuts 16 and the like.

FIG. 2 shows another embodiment, in which a waterproof sheet 8 is laid on the A side of the concrete body through a heat insulating layer 17, and the collar 7 of the bolt 1 is placed on the insulating layer 17. It is something that The rest of the structure is exactly the same as in the previous embodiment, and corresponding parts are designated by the same reference numerals.

Effects of the invention This invention has the above-mentioned configuration, in which the collar 7 is provided at the upper end of the female threaded cylinder 2 buried in the concrete body A side, and the flange 7 is provided in the area around the bolt through hole 9 of the waterproof sheet 8. However, since it is sandwiched between the collar 7 and the presser plate 4 that is watertightly fixed to the bolt 1 side, and is tightened and fixed, the internal In addition to preventing water from entering, a complete watertight state is maintained between the collar 7, the waterproof sheet 8, and the holding plate 4, and water from the outside passes through the bolt through holes to the bottom of the waterproof sheet. It absolutely prevents water from entering the water, achieving an extremely good waterproof effect. Moreover, since no sealant is used and there is no need to use adhesive to fix the parts around the bolt through holes of the waterproof sheet to the joint plate, etc., construction can be carried out efficiently and reliably, and the durability can be improved. It also has the effect of enriching the body.

[Brief explanation of the drawing]

Figures 1 and 2 are longitudinal sectional views of the first and second embodiments of this invention, respectively, and Figures 3 and 4 are longitudinal sectional views of conventional fixing bolt upright structures, respectively. be. A... Concrete frame, 1... Fixing bolt,
2... Female thread cylinder, 3... Nut, 4... Holding plate, 5, 6... Welding part, 7... Flange, 8... Waterproof sheet, 9... Bolt through hole, 12... Stay for pillar mounting. , 14... Natsuto, 15... Pillar.

Claims (1)

[Scope of utility model registration request] A female threaded cylinder having a flange at the upper end is buried in a concrete building body with the flange positioned on the surface of the building body,
In addition, a waterproof sheet is laid on the body surface on the flange, and a nut with a retaining plate fixed watertightly to the lower surface by welding the entire circumference is attached to the outer periphery of the intermediate part of the length of the fixing bolt for attaching the pillar, etc. The lower part of the bolt is screwed into the internally threaded cylinder through the bolt through hole of the waterproof sheet, and is tightened with the nut, thereby securing the area around the bolt through hole of the waterproof sheet. A watertight erecting device for a fixing bolt on a sheet waterproof construction surface, the part of which is clamped and fixed between the brim and the holding plate.