JPS6033121Y2 - Expansion joints - Google Patents

Description

[Detailed description of the invention] The present invention relates to expansion joints, particularly joints used to cover gaps between structures such as pavements and buildings. In order to prevent the effects of vibrations, expansion and contraction that occur in one structure from spreading to the other structure, a linear gap of approximately 50 meters, sometimes over 100 meters, is provided, but at all times ,
It must be covered to prevent dust from getting in and people from getting stuck inside.

However, since the widths vary as mentioned above, it is necessary to prepare various cover joints corresponding to each width, but of course, this is not a good idea.

For this reason, gaskets made of expandable materials have been used to reduce the number of types of joints that need to be prepared; The height of the rise is extremely high - it is connected to the headquarters.

In addition, joints must naturally take into account structural changes that occur during earthquakes, but in order to respond to such upward, downward, or automatic complex changes, it is better to use a fixed cover than a fixed cover. The cover must also be flexible.

The present invention is an expansion joint made from the above-mentioned point of view, and includes a pair of bases, a plate, a pair of gaskets, and a pair of ridges, preferably with a water stop plate added thereto. It will be done.

An example of its implementation will now be described with reference to the attached FIG. 1, FIG. 3, which is an enlarged sectional view of section A, and FIG. 4, which is an enlarged sectional view of section B.

That is, the two structures 1a and 1a' both have floor-like upper surfaces flush with each other, but a gap 2 is provided between them.

A pair of bases 1 that are fixed opposite to the upper limits of these structures.
0 and 10' are metal extrusion products having a cover plate supporting edge 13 on the gap side and a ridge attachment part 15 on the structure side.

In the case shown in the figure, the upper end of the base wall 11 facing the gap 2 in the vertical direction and having the waterstop plate Hough groove 12 at the lower part is located at the cover plate supporting edge 1.
3, a shape in which a leg wall 14 having an upwardly facing ridge rib attachment groove, which is a ridge attachment part 15, is integrally protruded from the middle part of the wall 11 toward the structure is shown at the tip.

Above, I explained the left base of the pair using a code.
The base on the right has a dash in the code, and the cross-sectional shapes of both are symmetrical.

If the shape is not symmetrical, a supplementary explanation will be given later in Figure 2.

Although a fixed wall 16 is provided in FIG. 1, fixed legs 17 are provided in place of this in the case of FIG.

The lid plate 30 is provided along the longitudinal direction in the center, and has gasket engaging portions 33a on both sides.

It is a long plate made of an extruded metal material whose upper surface is divided into a left section 32a and a right section 32b by a convex portion 31 having a horizontal groove 33b, and preferably has bases on both lower surfaces. Locking portions 34a, 3 of stand support edge 13°13'
A downward groove 4b is provided.

The pair of ribbed edges 20, 20' has a base mounting portion 23 on one edge side.
The downwardly protruding mounting rib is a long member made of an extruded metal material and has a downwardly directed engagement groove, which is a gasket engagement portion 22, on the other side edge side.

The pair has a left-right symmetrical shape, and is indicated by a dash on the right ridge 20'.

If the left and right sides are not symmetrical, we will discuss this later in Figure 2.

The base attachment portion 23 of the ribbed edges 20, 20' is connected to the ribbed attachment portion 15.
When it is installed by pushing it in from above, the gasket engaging portion 22 provided on the other side of the presser edge will be attached to the aforementioned cover plate supporting edge 13.
They appear to face each other in an interlocking manner with a certain gap between them.

The certain gap is large enough to allow the plate portion of the cover plate 30 mentioned above to freely move in and out between the gap, and the plate portion is connected to the cover plate supporting edge 13,
It will be narrowed by the ridges 20, 20'.

In one embodiment according to the present invention, the plate thickness of the gap 30 is the same as the plate thickness of the blade plate 54 of the gasket 50.50', but whether or not the gasket 50.50' is also narrowed is a matter of design discretion. determined.

The pair of gaskets 50 and 50' have a substantially rectangular cross section, and are provided with a horizontal protrusion extending over the lid plate engagement portion 5 on one side, and an engagement protrusion that is a ridge engagement portion 53 on the other side. It is a long material made of a stretchable material, and the substantially rectangular shape is a trapezoid as shown in the figure, with anti-slip patterns engraved on the upper and lower surfaces, and the left and right sides of the cover plate protrusion 31 in the installed state. The lateral direction is meant to allow slight deformation, such as the lower surface being extended to form vanes 54, 54'.

This wing plate 54 is a kind of drainer and can be omitted.

Furthermore, the stretchable material refers to natural or artificial rubber or resin), and the figure shows a case in which several through holes 55 are provided inside to promote stretchability.

This pair also has a symmetrical shape, and I have marked the right gasket with a dash.

The water stop plate 40 provided as necessary is a long plate made of a water-impermeable and visible material such as rubber or resin, and is attached to both side edges of the substrate 41. are provided with protrusions 42a and 42b for attachment to the base.

Next, how to use the above joint will be described.

That is, the bases 10 and 10' are fixed to the upper corners of the structures 1a and 1a' forming the gap 2 so as to face each other.

For fixing, the edge of the fixing wall 16 may be inserted into a commonly used anchor fitting 7, and the fitting 7 and the anchor bolt 8 buried in the structure may be welded together.

A water stop plate 40 is installed between the fixed left and right bases 10 and 10'.
The water stop plate is fitted by fitting the protrusions 42a and 42b into the Hough grooves 12 of the base, and on the other hand, gaskets 50 are placed in advance on the left and right sections 32a and 32b, respectively, on the upper surface of the cover plate.
．． 50' is the engagement part 52 and 52' of the gasket to the lid plate.
This cover plate 30 is fitted into the horizontal groove that is the engagement part 33aw33b of the convex part of the cover plate, and the cover plate 30 is
Place it on the bearing edge 13, 13' of the right base.

Once this is done, fit the protrusion that is the engaging portion 53 of the gasket into the groove that is the engaging portion 22 of the ridge 20, and then attach the mounting rib 23 of the ridge via the snap-in clip 6.
The edge is attached by pushing it into the attachment groove of the attachment part 15 of the base.

Of course, this is done in both the left and right sections 32aw32b, so that the gap 2 is completely covered by the proposed joint.

Once this is completed, the concrete 5 on the back side of the bases attached to the structures la and lb is poured and solidified, and a topcoat is applied to complete the installation of the joints.

In the case of FIG. 1, the upper surfaces of both structures are flush with each other, but FIG. 2 is exemplified as a modified embodiment in which one is a wall 1a'' and the other is a floor 1a'.

In this case, the leg wall 14 of the base of the wall 1a'' is bent from the horizontal direction to the vertical direction, and the base is fixed to the wall with bolts 9 at the fixed leg 17, which is the vertical part.

The shape of the presser edge is also bent accordingly, but the engagement portion 22 and the attachment portion 23 are attached to the gasket engagement portion 53 and the base attachment portion 15, respectively. is the same as in Figure 1.

It is sufficient to refer to the marks.

As mentioned above, this invention has two gaskets as expandable members.
The blade-side engaging portions 52 and 52' are
The other engaging portions 53 and 53' are respectively engaged with separate ribs 20 and 20' 22 and 22' to form separate left and right structures. It will be pulled and attached.

Therefore, the lifting up in the center that may occur when using a single gasket is reduced to half of that, so it is possible to adapt the installation to a variety of widths of the gap 2. be.

Of course, when absorbing the fluctuations of both structures, the cover plate 30 is rotatably held between the base 10.10' and the ridge 20.20', so that it can rotate up, down, left, and right. This eliminates the need for the influence of fluctuations from one side to follow the fluctuations in the other side.

The presence of the grooves, which are the locking parts 34at34b, not only helps prevent the cover plate from coming off the support edge when installing the joint of the present invention, but also helps prevent the cover plate from coming off on the support edge. This helps prevent the cover plate from falling off the base.

Note that the water stop plate 40 is made considerably larger than the expected width of the gap 2, and as shown in the figure, the center of the base plate 41 hangs down to form a gutter to catch the water that has penetrated into the drainage channel. Let it help you derive it.

Furthermore, if the thickness of the gasket is made substantially the same as the height of the convex part of the cover plate, the mechanical strength of the gasket made of an elastic material is also reinforced by the convex part made of metal. .

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of the joint part between the floor and the floor using the joint cover of the present invention, Fig. 2 is a longitudinal sectional view of the joint part between the floor and the wall using the joint cover of another embodiment, and Fig. 3 is the vertical sectional view of the joint part between the floor and the wall using the joint cover of the present invention. FIG. 4 is a cross-sectional view showing the state of part A immediately before fitting, and FIG. 4 is a cross-sectional view showing the state of part B just before fitting. la, b are the structure, 2 is the gap, 3 is the floor finish layer, 4 is the top coat, 5 is the concrete, 6 is the snap fitting, 7 is the anchor fitting, 8 is the anchor bolt, 9 is the bolt, 10 is the base, 11 is a base wall, 12 is a waterstop plate Hough groove, 13 is a lid plate supporting edge, 14 is a leg wall, 15 is a rim attachment part, 16 is a fixed wall, 1
7 is a fixed leg, 20 is a ridged edge, 22 is a gasket engaging portion, 2
3 is a base mounting part, 30 is a cover plate, 31 is a cover plate convex part, 32a
is the left section, 32b is the right section, 3319b is the gasket engagement part, 34a-, b are the base engagement parts, 40 is the water stop plate, 41
42 avb is a protrusion, 50 is a gasket, 51 is a gasket base portion, 52 is a lid plate engaging portion, 53 is a ridge engaging portion, 54 is a gasket wing plate, and 55 is a gasket through hole.

Claims (1)

[Claims for Utility Model Registration] A pair of metal bases 10 and 10' fixed oppositely to two structures forming a gap 2 have a cover plate supporting edge 1 on the gap side.
3 and 13', and ribbed edge attachment parts 15 and 15 on the structure side, and the lid plate 30 is provided along the longitudinal direction in the central part, and gasket engagement parts 33a, on both sides.
There are two sections 32a on the left and right by the convex part 31 having 33b.
, 32b, and has a pair of ribbed edges 20.
．． 20' is a long plate having base mounting parts 23, 23' on one edge and a gasket engaging part 22, 22' on the other edge, and a pair of gaskets)50. 50' is a long piece made of a stretchable material with a substantially rectangular cross section and a lid plate engaging part 52, 52' on one side and ribbed engaging parts 53, 53' on both sides of the other side, Said base 10.10'
50, 50' places the side edges of the cover plate 30 on the cover plate supporting edges 13 and 13', and the gasket 50, 50' holds the cover plate engaging parts 52, 52' respectively. In addition to engaging the gasket engagement portion 333933a' of the plate, the ridges 2o, zo'gi, and their base attachment portions 23.23' are attached to the ridge attachment portions 15.15' of the bases 10 and 10', respectively.
An expansion joint characterized in that the gas kerato engaging portions 22, 22' are engaged with the ridge engaging portions 53, 53' of the gasket.