JP7202158B2 - Expansion joint cap - Google Patents

Description

More specifically, the present invention relates to expansion joints of outdoor floor slabs, and more particularly to caps for expansion joints having a structure with high precision and excellent aesthetics.

Conventionally, when placing concrete or mortar plates outdoors, joints are formed at regular intervals in order to prevent cracks from occurring due to expansion and contraction of these, and these joints are filled with polyethylene, foamed polystyrene, etc. A joint material, which is the main raw material, is generally provided. Then, the surface side of the joint material is covered with a cap made of synthetic resin for the purpose of waterproofing and aesthetics. Various structures of such caps have been developed.

JP-A-59-96355 JP-A-59-177440 JP-A-62-68962 JP-A-64-58760

All of these known technologies use synthetic resin as the material for the cap, and in order to follow the expansion and contraction of the floor slab, various measures are taken, such as providing a hook for the floor slab so that it does not come off easily. structure is proposed. However, although all of them use synthetic resin materials to reduce weight, there is a problem that they are long and easily bent, making it difficult to straighten them during construction. Moreover, since it is a synthetic resin material, there is a problem that it deteriorates quickly under the influence of ultraviolet rays and acid in the atmosphere, especially when it is installed outdoors.

In the present invention, the cap applied to such a conventional expansion joint is improved, and the expansion joint cap that can reliably perform straightening at the time of construction, has a strong resistance to the external atmosphere, and has high aesthetics. It is intended to provide

In the cap covering the surface of the expansion joint of the present invention, as a means for achieving the above object, the upper plate portion extends along the longitudinal width of the expansion joint, and the upper plate portion extends downward from the side of the upper plate portion. It consists of a pair of vertical surface plate portions sandwiching the expansion joint, and widened plate portions bent obliquely downward from each of the vertical surface plate portions, and through-holes are provided at regular intervals in the widened plate portions. It was adopted. Although the function and effect of the cap itself are the same as those of the conventional cap, the expanding plate portion bent and extended in an oblique direction secures fixability to the floor slab and prevents scraping and breakage. In addition, since the vertical surface plate portion extends downward, the surface side of the expansion joint is less affected by the expansion and contraction of the floor slab. In addition, since the cap is made of a highly rigid material with high weather resistance, it is possible to prevent the cap from being easily bent unlike the conventional case. By providing through-holes at regular intervals in the expansion plate part, when placing the mortar or concrete that constitutes the floor slab, the mortar or concrete flows through the through-holes to the opposite side, improving filling performance. be able to.

Moreover, the expansion angle of the expansion plate portion is bent at an angle of 45 degrees with respect to the vertical surface portion. By setting this angle, the tip of the spreader plate can be positioned at a distance away from the surface of the floor slab, and there is an effect that it is possible to more reliably prevent scraping damage originating from the tip. . It should be noted that the bending angle of the expanding plate portion does not have to be strictly 45 degrees, but is an exemplary numerical value. What is necessary for the present invention is that the existence of the expansion plate prevents the cap from scraping and breaking, and that the angles are such that mortar or the like can be filled up to the back side (lower side) of the expansion plate. is the intended range of the present invention .

Further, by providing an extension plate portion in the horizontal direction or the vertical direction from the spreading plate portion, the fixability of the cap to mortar or concrete is enhanced.

When the material of the cap is made of a highly rigid material with high weather resistance, particularly when a stainless steel plate is used, a rust-preventing effect can be expected and aesthetics can be enhanced.

Then, according to the means of cutting off the widening plate portion at both ends of the cap to leave only the upper surface plate portion and the vertical surface plate portion, the spreading plate portions do not interfere with each other when the ends of the cap are butted against each other. Therefore, it is possible to contribute to free design in vertical and horizontal directions.

ADVANTAGE OF THE INVENTION According to this invention, the cap of the expansion joint which does not cause scraping failure by a comparatively simple structure was able to be provided. In addition, when a stainless steel plate is used as the material, the cap has a high antirust effect and is highly aesthetically pleasing.

1 is a perspective view showing a cap of an expansion joint according to the present invention; FIG. The perspective view which shows another embodiment. The perspective view which shows another embodiment. FIG. 4 is a perspective view showing a modification of the embodiment of FIG. 3; The perspective view which shows the modification of a cap edge part. 6A and 6B are plan views showing three applications of the modification of FIG. 5; FIG.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view of a cap applied to the expansion joint of the present invention, wherein 1 is a constructed expansion joint, which is provided between mortar or concrete floor slabs 2, 2, and the basic structure. is based on the conventional construction method. Reference numeral 3 denotes a cap showing an embodiment of the present invention, which consists of an upper surface plate portion 4 whose surface is exposed to the outside, and vertical surface plate portions 5 which are bent from both sides of the upper surface plate portion 4 and extend downward. 5, and widening plate portions 6.6 which are bent and extended obliquely downward from the vertical surface plate portions 5.5. In this embodiment, the expansion plate portions 6.6 are bent at 45 degrees with respect to the vertical surface plate portions 5.5. However, the mode of bending at 45 degrees is an example in this embodiment. As described above, the bending angle of the present invention is not limited to this embodiment. In other words, if the expansion plate portion 6 is extended obliquely downward by bending from the vertical surface plate portion 5, it is included in the present invention. The reason for this configuration is that if the expansion plate portion 6 is not present and only the vertical surface plate portion 5 is used, the cap as a whole will not be constrained by anything, so it will not be able to follow the expansion and contraction of the floor slab and will easily fall off. , and a spreading plate portion 6 is provided to prevent this. In addition, if the extending direction of the expanding plate portion 6 is, for example, horizontal, or if it is further bent and folded back at an acute angle, the distance between the expanding plate portion 6 and the surface of the floor slab becomes closer, which tends to cause scrape breakage. Become. Therefore, in order to prevent this, the folding direction of the spreading plate portion 6 is set further downward from the tip of the vertical surface plate portion 5 . Needless to say, the length of the cap 3 follows the length of the expansion joint.

Next, FIG. 2 shows a modified example of the cap of FIG. 1, which has the same basic configuration as that of FIG. The through holes 7 are provided to allow mortar or concrete to pass through the through holes 7 when the floor slab is placed, thereby improving the penetration of the mortar or the like into the acute-angled portion 8 in the drawing. Although the number of through-holes 7 is not particularly limited or restricted, they are generally provided at regular intervals.

FIG. 3 shows a modification in which an extension plate portion 9 is provided by further bending the leading end of the expanding plate portion 6 in the vertical direction, and FIG. The provided modification is shown. 3 and 4 are intended to further improve the fixability to the floor slab, and in the form in which the extension plate portion 9 is provided in the vertical direction as shown in FIG. Since it is kept away from the surface of the printing plate, it is possible to avoid scraping damage.

Next, FIG. 5 shows a modified example of the end portion of the cap 3, and discloses an optimum configuration based on actual construction. That is, in the cap 3 of the embodiment shown in FIG. 1, the widening plate portion 6 on the end portion side is cut away, leaving the upper surface plate portion 4 and the vertical surface plate portions 5.5. In addition, this form may be either only one side end, or both ends, depending on the application. With this configuration, the three configurations shown in FIG. 6 (c)) can also be applied to any of them, so it can be widely applied to long expansion joints, joint corners, and even parts where expansion joints intersect.

By the way, the cap shown in this embodiment is made of metal such as steel. However, the material is not particularly limited as long as it is metal. For example, when stainless steel is used as the material, it has excellent flexural strength and anticorrosion effect, so that the joint portion can be made aesthetically pleasing for a long time after construction.

1 Expansion joint 2 Floor slab 3 Cap 4 Top surface plate 5 Vertical surface plate 6 Expansion plate 7 Through hole 8 Acute angle 9, 10 Extension plate

Claims (5)

A metal cap covering the surface of an expansion joint, comprising: an upper plate portion extending along the longitudinal width of the expansion joint; and an upper plate portion extending downward from the side of the upper plate portion to sandwich the expansion joint. An expansion joint characterized by comprising a pair of vertical surface plate portions and spreading plate portions that are bent obliquely downward from each of the vertical surface plate portions and that through-holes are provided at regular intervals in the spreading plate portions. cap. 2. The expansion joint cap according to claim 1, wherein the expansion plate portion is bent at an angle of 45 degrees with respect to the vertical surface portion. 3. The expansion joint cap according to claim 1, further comprising an extension plate portion extending horizontally from the expansion plate portion. 3. The expansion joint cap according to claim 1, further comprising an extension plate portion provided in the vertical direction from the expansion plate portion. The expansion joint cap according to any one of claims 1 to 4, wherein both ends of the cap are obtained by cutting the widening plate portion by a predetermined length.

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