JPH0339521Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to an expansion joint device for buildings such as floors and corridors.

Conventionally, expansion joint devices for buildings have a structure in which bases are fixed to the edges of the building frames that face each other at the joint part of the building, and a cover plate that covers the gap between both bases is fixed to one of the bases. It has been known.

However, this is only useful if both bases are simply displaced relative to each other along the plane of the cover plate;
If the relative displacement between the two bases includes a displacement component in a direction that intersects the surface of the cover plate, there is a disadvantage that excessive force is applied to the cover plate, causing the cover plate to be bent or torn off. be.

The present invention has been proposed to solve the above-mentioned drawbacks, and the details thereof will be explained below based on the drawings.

1 and 2 show an embodiment of the present invention,
The building expansion joint device illustrated in both figures is installed between a pair of left and right concrete frames 1.

That is, a base 3 running along the edge 2 is fixed to the edge 2 running front and rear of each frame 1, and the edge material 5 is attached to the base 3 via a hinge 4 along the front-rear axis parallel to the edge 2. It pivots around the heart so that it can swing. The edge material 5 forms a planar receiving surface 7 that supports the cover plate 10, and has a swinging arm 6 protruding from the back surface of the receiving surface 7 having a rotary shaft portion 17 with a circular cross section at its tip. An engaging part 8 is provided closer to the center of the gap than the swinging arm part 6 on the back side. A tension coil spring 9 is mounted across the engaging portions 8 of both edge members 5. The coil center of this coil spring 9 is located on a straight line connecting the swing axes of both edge members 5, so that the receiving surfaces 7 of both edge members 5 are located on the same plane regardless of the expansion and contraction of the coil spring. It's like this.

The cover plate 10 is slidably received by placing the left and right ends of the back surface on the respective receiving surfaces 7, and a bracket 11 fixed to the center of the back surface in the left and right direction is attached to the coil spring 9. By screwing into the center portion, lifting off from both receiving surfaces 7 is prevented.

Here, if the two main bodies 1 simply move away from each other to the left and right, the coil spring 9 will stretch and the overlap between the cover plate 10 and both the receiving surfaces 7 will become smaller. When the two main bodies 1 simply approach from the left and right, the coil spring 9 contracts and the overlap between the cover plate 10 and the receiving surfaces 7 increases.

Next, if both bodies 1 shift vertically, the second
As shown in the figure, both edge members 5 swing equiangularly in the same direction, and as the distance between the swing axes of both edge members 5 increases, the coil spring 9 stretches, and the cover plate 10 and both receiving surfaces The overlap with 7 becomes smaller. At this time, since both receiving surfaces 7 are located on the same plane, no unreasonable force is applied to the cover plate 10.

In this embodiment, a metal fitting 14 is fastened with a nut 13 to an anchor bolt 12 implanted in the frame 1, and a base 3 is fixed to the metal fitting 14 with screws 15. The structure fixed to 1 is not limited to this.

Furthermore, in this embodiment, since the base 3 and the edge material 5 are formed of extruded aluminum alloy members, the groove 16 with a circular cross section provided over the entire length of the base 3 on one side is formed on the other side. The hinge part 4 is formed by fitting a rotary shaft part 17 with a circular cross section provided over the entire length of a certain edge material 5, but the hinge part 4 is formed separately from the base 3 and the edge material 5. It may be something you have.

Furthermore, in this example, an engagement groove 18 is provided at the lower end of the base 3 and runs along the entire length of the base 3, and each edge of the water stop plate 19 made of vinyl chloride is engaged with each engagement groove 18. Although the structure is designed to prevent precipitation from flowing downward from the join part, such a configuration is not essential to the present invention.

In addition, in this example, a lid 20 extending in an arc shape from the upper part of the edging material 5 toward the base 3 is provided over the entire length of the edging material 5, and the lid 20 is provided over the entire length of the base 3. A concave groove 21 is provided to receive the edge material 5.
The lid 20 closes the gap between the base 3 and the upper part of the edge material 5, which opens and closes when the base 3 swings, to prevent dust from entering between the base 3 and the edge material 5, and to prevent heels of high heels from stepping on the space. However, this is not an essential configuration for the present invention.

FIG. 3 shows the main part of a modification of the above embodiment,
This is characterized in that the lid 20 is formed of an elastic material separately from the edge material 5, and the lid 20 is engaged with a locking groove 22 provided over the entire length of the upper part of the edge material 5. The rest of the configuration is the same as the previous example.

Further, in each of the above embodiments, the coil spring 9 is integrated, but it is also possible to prepare a pair of left and right coil springs and change the structure to connect each edge member to the bracket with a different coil spring. .

As mentioned above, the present invention fixes bases running along each edge to the edges of both mutually opposing frames of the joint part of a building, and attaches each edge material to each base parallel to each edge. This is an expansion joint device for buildings that is pivoted so as to be able to swing around an axis, a cover plate covers the gap between the two frames, and the back side is supported in contact with the edging material. Also, even if the two building blocks shift without changing the distance, or even if the two building blocks are displaced vertically, horizontally, or vertically in the paper, no unreasonable force will be applied to the cover plate. The cover plate will not be bent or peeled off, and the gap between the bases can be sufficiently covered. In particular, when a lid is provided at the swinging tip of the edge material to close the gap between the base and the swinging tip of the edge material, as shown in FIG. 3, the entire joint is always covered. This is extremely advantageous both in appearance and in terms of seam sealing.

In addition, in the present invention, the coil center of the tension coil spring suspended between the two edge materials is located on the straight line connecting the pivot axes of the two edge materials, so that the coil center of the tension coil spring is positioned on the straight line connecting the pivot axes of both edge materials. The upper surfaces of both edge members can be positioned on the same plane, which is preferable for supporting the cover plate. Further, in the present invention, since the cover plate is slidably supported on both edge members, the cover plate can slide smoothly due to the tension coil spring. Furthermore, in the present invention, a tension coil spring is screwed into a bracket fixed to the center of the back surface of the cover plate, so that the cover plate does not lift up from both edge materials, and has a centering effect.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention,
FIG. 1 is a vertical cross-sectional view in a standard state, and FIG. 2 is a vertical cross-sectional view in a building fluctuation state. FIG. 3 is a longitudinal sectional view of a main part of a modification of the above embodiment. 1...Structure, 3...Base, 5...Edge material, 10...
...Cover plate.

Claims (1)

[Scope of utility model registration request] Both skeletons facing each other at the joint part of a building 1
a base 3 running along each edge 2 at each edge 2 of the
is fixed, each edge member 5 is pivotally attached to each base 3 so as to be swingable around an axis parallel to each end edge 2, and a coil of a tension coil spring 9 is mounted across both edge members 5. With the center located on a straight line connecting the pivot axes of both edge members 5, both ends of the cover plate 10 are slidably placed on both edge members 5, and attached to a bracket fixed to the center of the back surface of the cover plate 10. The tension coil spring 9
An expansion joint device for a building, characterized in that it is screw-fitted.