JPH042199Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a technology that improves the mounting portion of a scaffolding fitting that is attached by penetrating a wall such as a manhole.

(Prior art) As shown in FIG. 7, a manhole scaffolding metal fitting 4 whose most part including the footstep part 10 is covered with synthetic resin 9
In some cases, a mounting part 5 with a screw carved into the tip end is passed through the wall body 1, and this is attached by tightening it with a nut 21 via a washer 22. An adhesive (also referred to as a bonding material) 16 such as mortar or epoxy resin is embedded.

(Problems to be solved by the invention) By the way, scaffolding fittings 4 having such a mounting structure
In this case, the nut 21 and washer 22 interfere with the gap between the mounting portion 5 and the wall 1, preventing the adhesive 16 from entering, so that a water-stopping effect cannot be obtained. Therefore, in order to fill the gap with the adhesive 16, it is possible to remove the nut 21 and the washer 22, but this not only takes a lot of effort, but also because the gap is small. difficult to fit into. If a sufficient amount of adhesive 16 is not filled, poor adhesion will occur after curing, making it easier for water to enter the manhole from this area, and reducing the mounting strength of the scaffold fitting 4.

In addition, in the above mounting structure, a screw is formed at the mounting end and a washer is placed on the thread to screw the nut, making it difficult to tighten inside the recess and making the structure complicated. Production costs are also high.

The present invention was developed in view of the above problems, and by eliminating the threaded part and adopting a pin fastening method, it is possible to prevent water intrusion, improve strength and installation workability, and create a simple and cost-effective scaffolding fitting. It is intended to provide a mounting structure.

(Means for solving the problem) Therefore, the configuration of the present invention is that in a scaffolding fitting that is attached to a wall such as a manhole by penetrating the wall, a groove is formed on the outer circumferential surface of the distal end side of the attachment part. ,
It is characterized in that a clip-shaped pin is inserted and the pin is fixed in contact with the outer surface of the wall.

The groove is formed at a position corresponding to the outer surface of the wall of the mounting portion of the scaffolding metal fitting. The groove becomes an engaging recess or stepped portion for clamping and fixing the pin when the pin is installed from the tip side of the mounting part, and is a circular groove,
It includes not only tapered grooves and square grooves but also width across flats. In principle, the groove is formed to intersect with the pin axis direction.

In the attached state, the clip-shaped pin has one side of its both ends in contact with the outer surface of the wall, and the other side in contact with one side of the inner surface of the groove. The pin itself is a clamping body, and can be made by, for example, folding the center part of a single metal plate by about 180 degrees, and can also be made of synthetic resin. In short, any pin structure may be used as long as it can be attached by fitting into the groove using the clamping force of the pin. The clamping surface of the pin is preferably formed so as to be in surface contact with the bottom surface of the groove. For example, if the groove shape is circular extending along the outer periphery of the circular mounting portion, the shape of the clamping surface of the pin is formed into an arcuate surface that matches the circular shape of the groove. The width of the pin is configured to be smaller than the width of the groove by a necessary amount, so that the pin can be easily clamped and a pin having a width that absorbs product errors can be attached.

(Function) When a pin, which replaces the conventional nut and washer, is fixed to the mounting part of the scaffolding fitting that penetrates the wall in this way, there will be a lot of damage around the mounting end when viewed from the direction in which the adhesive fills the gap. A space is created. For this reason,
When putting adhesive between the attachment part and the wall, the adhesive can be put in sequentially from the space around the attachment part, and a sufficient amount of adhesive can be filled deep into the gap. . Therefore, by injecting a sufficient amount of adhesive into the gap, it is possible to prevent adhesion failure after curing, ensure the required mounting strength, and increase the water-stopping effect in the gap. It will be done.

Further, the clip-type pin according to the present invention can be inserted in the axial direction from the distal end of the mounting portion and fitted into the groove with one touch, which significantly improves the mounting work compared to conventional nuts.

There is no need to carve a screw into the mounting end of the scaffolding metal fittings, there is no need to prepare fastening parts such as nuts and washers, and this invention only requires the use of one pin, so the structure of the mounting part is extremely simple. This greatly reduces production costs.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In Fig. 1, 1 is a manhole wall (manhole side mass) having a pair of tapered mounting holes 2.
A recess 3 is provided on the outer end side of the hole 2 in a continuous manner. Reference numeral 4 denotes a U-shaped scaffolding metal fitting, in which a tapered groove 6 is formed near the tips of the attachment portions 5 on both ends thereof, and the taper diameter thereof decreases toward the tip. The bottom surface of this groove 6 and the side surface of the tip-side circular portion 7 form a right triangular cross section. A tapered surface 8 is also formed at the tip of the circular portion 7.

A synthetic resin 9 is coated on the mounting portion 5 of the scaffolding metal fitting 4 except for the tip side thereof, and a non-slip pattern 11 is provided on the footstep portion 10. Red light reflecting means 12 are fixed near both ends of the foot 10. A wavy finger hook portion 13 is provided inside the foot pedal portion 10. On the outer periphery of a portion of the attachment portion 5 that corresponds to the inner surface of the wall 1, a bulge portion 14 for position fixing, which is formed in a chevron-shaped cross section, is provided. By tightly fitting the inclined surface of this bulging part 14 into the inner end of the hole 2, the mounting position of the scaffolding metal fitting 4 can be automatically obtained, and the surface of this bulging part 14 is It is formed as smoothly as possible.

Reference numeral 15 denotes a clip-type pin made by bending a metal plate, and as shown in FIG. . The pin 15 is fitted into the groove 6 and is clamped. The length of the pin 15 is set longer than the diameter of the hole 2, one side of both ends of the pin 15 is in contact with the peripheral edge of the hole 2, and the other side of the center part of the pin 15 is in contact with the straight wall surface of the groove 6. are in contact.

Therefore, only the pin 15 is attached to the tapered groove 6 of the attachment part 5 of the scaffold fitting 4, and a large amount of space is created around the vicinity of the tip of the attachment part 5. In addition, since the gap between the mounting part 5 and the hole 2 becomes wedge-shaped in cross section as it goes toward the distal end of the mounting part 5, an adhesive such as mortar or epoxy resin can be applied to the gap. When filling the adhesive 16, the adhesive 16 can be filled smoothly without any problems. The filled adhesive 16 fills the bulge 14
It stops at the point and does not go out inside the manhole.
Note that after this, an adhesive 16 is embedded in the recess 3 of the concrete wall 1, and as the adhesive 16 hardens, the installation work of the scaffolding metal fittings 4 is completed.

As shown in FIG. 3, the clip-shaped pin 15 may have a cutout in the center and protrusions 15b at both ends. Although the scaffolding metal fittings 4 are U-shaped in the embodiment, the shape of the scaffolding metal fittings is arbitrary. Further, the present invention may be applied to a scaffolding metal fitting having a flange that contacts the inner surface of a wall.

4 and 5 each show another embodiment of the present invention, and the same parts as in FIG. 1 are given the same reference numerals. In FIG. 4, the groove 6 is a circular outer peripheral groove. Further, in FIG. 5, the groove 6 is formed of a pair of parallel grooves, and as a modification of this, the bottom surfaces of the pair of grooves 6 may be formed so as not to be parallel to each other, as shown in FIG.
Although FIG. 6 shows an example in which the clip-shaped pin 15 is attached in the vertical direction, the direction of the groove 6 is arbitrary.
It may be horizontal or inclined.

(Effects of the invention) As mentioned above, according to the invention, adhesive can be filled evenly and thoroughly into the gap between the mounting part of the scaffolding metal fittings and the wall, which eliminates the problem of poor adhesion as in the case of conventional methods. Accordingly, the mounting strength of the scaffolding metal fittings is increased, and water intrusion into the gap can be reliably prevented.

In addition, the structure of the present invention eliminates the need for threaded parts and nuts and washers as in the past, and only requires the pin to be fitted with one hand, making the work of installing the scaffolding metal fittings extremely easy. Furthermore, the mounting part is simplified and the manufacturing cost is significantly reduced compared to conventional ones, and the practical effects are extremely large.

[Brief explanation of drawings]

Figure 1 is a plan view showing one embodiment of the present invention;
The figure is a sectional view taken along the - line in Figure 1, Figure 3 is a plan view showing a modified example of the pin, and Figures 4 and 5 are a plan view and main part of other embodiments of the present invention, respectively. FIG. 6 is a cross-sectional view showing a modification of the groove shown in FIG. 5, and FIG. 7 is a plan view showing an example of a conventional scaffold fitting structure. 1... Manhole wall, 2... Mounting hole, 4...
...Scaffolding metal fittings, 5...Mounting part, 6...Groove, 9...Synthetic resin, 14...Bulging part, 15...Pin, 16...
…glue.

Claims (1)

[Scope of utility model registration request] 1. A mounting structure for a scaffolding fitting, characterized in that a groove is formed on the outer circumferential surface of the distal end side of the mounting portion that penetrates the wall, and a clip-shaped pin that comes into contact with the outer surface of the wall is fitted into the groove.