JPS6123045Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an expansion joint, and particularly to a joint suitable for covering gaps provided in connection lines such as pavements.

As shown in Figure 1, horizontal structures such as pavement absorb vibrations caused by earthquakes and construction work, as well as expansion and contraction caused by temperature differences.
The effect that occurred on one structure A is transferred to the other structure.
Here and there, so as not to affect A′,
A linear gap B with a width of about 50 mm is provided.
It is desirable that such a gap be covered to prevent danger and to prevent dust from accumulating, and it is important that the top surface be substantially flush with the top surface of the structure and be firmly covered.

The present invention provides an expansion joint used for such purposes. The accompanying drawings show one example of the implementation, and will be described below with reference to the drawings.

As shown in FIG. 1, the joint of the present invention has a gasket 3, a pair of edge members 1, 1', a pair of frame members 2, 2', and a water stop plate 4 as its main components. The term "main components" means that other components such as anchor bolts 5 and bolts 6 for connecting components are also required for installation.

The gasket 3 is a long elastic material product with a rectangular cross section (including a rectangular shape) having fitting protrusions 3e and 3f with neck constrictions on both left and right side surfaces 3b and 3d, and can be expanded and contracted as shown in the figure. For ease of use, it is preferable to use a hollow material, and it is preferable to provide anti-slip grooves 3g on the upper and lower surfaces 3a and 3c. The appropriate material is natural or synthetic rubber.

The pair of edge members 1 and 1' are long metal shapes with a left-right symmetrical cross section consisting of a main body and a support base, so it is sufficient to explain only one of them, but we will now show how they are used. Figures 1 and 2 will be described.

The edge material consists of a main body part and a support part, and the main body part consists of fitting grooves 1a and 1'a with narrowed entrances and openings in the horizontal direction, and fixing grooves protruding from the back side of the grooves. The ribs 1b, 1'b, the spacing rib provided below the fitting groove, and the rising engaging pieces 2d, 2 of the frame material, which open downward at the intermediate portion between the fixing rib and the spacing rib, and which will be described later. ``d'' is a portion having the engagement grooves 7, 7' to be engaged.

Further, the support floor section refers to the fitting grooves 1a, 1'a of the main body section for supporting the gasket 3 above.
A group of a plurality of tongue-shaped pieces 1d and 1'd extending horizontally from the bottom side of the plate in a comb-like shape facing each other and arranged so that they are staggered on the left and right edge materials. It is.

Of course, the fitting grooves are for fitting the fitting protrusions 3e and 3f of the gasket into male and female fittings during use, and as shown in the first figure, the narrowed entrance of the fitting groove is used to fit the fitting protrusions 3e and 3f of the gasket into each other. By biting the constricted neck of the joint, it is possible to pull the gasket to the left or right without falling off.

Fixing rib 1 in such edge material 1, 1'
Of course, b and 1'b are parts for fixing the edge material to the structure via the frame material, and are located at positions that do not interfere with the fitting of the gasket 3, in other words, protrude on the back side of the edge material fitting groove. The engagement grooves 7 and 7', which are opened downward, are laterally extended so as to be able to engage with the rising engagement pieces 2d provided on the frame member 2. The spacing ribs 1c and 1'c are so-called legs of the main edge material, and during installation, they have the role of creating a gap between them and the structure to facilitate the installation operation, and also serve to suppress the water stop plate described later. This is a vertical rib that also contributes to reinforcing the edge material.

The fact that the tongue pieces 1d group and 1'd group in the support bed are arranged horizontally in a comb-like shape and staggered means that when they are attached to the structure of the left and right edge members facing each other, , refers to an arrangement in which the tongues can engage with each other as shown in FIG. 2, and also refers to an arrangement in which the depth of engagement can be changed, as shown by the square mark l in FIG. 1. Therefore, when the left and right tongue groups are in a mismatched state, a single floor is formed on which the gasket 3 can be supported.

The pair of left and right support frames 2 and 2' are a pair of symmetrical members that are interposed between the structure and the edge material to stably and firmly attach the latter to the former. mounting parts 2a, 2'a, fixed rib contact parts 2c, 2'c, and rising engagement pieces 2d, 2'd.
A long metal member having a base 2 having the same height as the spacing ribs of the edge material as shown in the first figure.
From the lower and upper ends of b and 2'b, respectively, the mounting portion and the fixed rib abutting portion are protruded horizontally and on the opposite side, and from the tip of the fixed rib, the engaging grooves 7 and 7 of the edge material mentioned above are exposed. It is a member made of an extruded metal material and is provided with rising engagement pieces 2d and 2'd for engagement with .

Next, the water stop plate 4 is a long membrane made of a water-impermeable material that can be expanded and contracted in the width direction. In addition, even if the material is metal, it may have a V-shaped cross section as shown in the figure and may be deformable. This V-shaped shape serves as a gutter to catch water leaking from above.
That water is useful for drains, etc.

As mentioned above, to cover the gap with each member, straddle the structures A and A', extend both the left and right sides 4a and 4a' of the water stop plate 4 above the gap B, and attach the mounting parts 2a and 4a' of the frame material. Fix 2'a with anchor bolts 5, 5',
Then, the fixing ribs of the edge material into which the gasket 3 is fitted are brought into contact with the abutting portions 2c, 2'c of the frame material, and fixed with bolts 6, 6'. At that time, if the frame material has the engagement pieces 2d, 2'd and the edge material has corresponding engagement grooves 7, 7', the installation will be more stable and easier. sell. Once the installation is complete, apply caulking 8 on the upper side of the bolt 6 as usual and no need to worry about it.

Since the present invention is constructed as described above, any gap between two flush structures can be easily covered by a single pair of joints of the present invention, regardless of its width.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing how the expansion joint of the present invention is used, and FIG. 2 is a partial perspective view of a pair of edge members. 1, 1' are edge materials, 2, 2' are frame materials, 3 is gasket, 4 is water stop plate, 5 is anchor bolt, 6 is bolt, 7, 7' is engagement groove, A, A' is structure Body, B is the gap.

Claims (1)

[Scope of claim for utility model registration] Fitting protrusion 3e with neck constriction on both left and right sides,
A long gasket 3 made of an elastic material and having a rectangular cross section of 3 f, a long water stop plate 4 made of an impermeable material that can be expanded and contracted in the width direction, and a pair of edge materials 1 and 1'; The frame members 2 and 2' are the main members, and the pair of edge members 1 and 1' are elongated metal shapes with a left-right symmetrical cross section and a main body part and a support part. In the cross-sectional shape under use, the main body has a fitting groove 1 whose entrance is narrowed and opens horizontally and in the direction of the gap B between the structures A and A'.
a, 1'a, fixing ribs 1b, 1'b protruding from the back side of the fitting groove, spacing ribs 1c, 1'c provided below the fitting groove, and the fixing ribs 1c, 1'c provided below the fitting groove; It is a portion having engaging grooves 7, 7' that open downward in the intermediate part between the use rib and the spacing rib, and its support part is connected to the fitting groove 1 of the main body part.
a, 1'a, horizontally from the bottom, a plurality of extending tongue-shaped comb-like teeth facing each other and arranged so that they are staggered on the left and right edge materials 2, 2'; The pair of frame members 2 and 2' are long metal shapes with left and right symmetrical cross sections, and the cross-sectional shape under use has a structure. Attachment parts 2a and 2'a to the bodies A and A', contact parts 2c and 2'c of the edge material to the fixing ribs, and rising engagement with the engagement grooves 7 and 7' of the edge material. An expansion joint characterized by having joint pieces 2d and 2'd.