JP3699544B2 - Expansion joint - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an expansion joint used for a communication passage that connects between buildings and between buildings and the ground.
[0002]
[Prior art]
It is necessary for the communication passage connecting between buildings and between the building and the ground to be able to absorb the displacement when a relative displacement occurs between them due to an earthquake. In addition, considering the wheelchair traveling in a hospital or the like, it is necessary that there is no step on the surface. A finger type expansion joint is currently known to satisfy these requirements.
[0003]
As shown in FIG. 11, the finger type expansion joint is formed by meshing a plurality of finger members 1, 1..., 2, 2. It is structured to form a bridge-shaped communication passage, and in some cases, the finger members 1, 1 ..., 2, 2, ... on both sides are connected to a turntable attached to the housing on each side It has a configuration.
[0004]
[Problems to be solved by the invention]
According to the finger type expansion joint, the finger members 1, 1..., 2, 2... On both sides meshing with each other can move relative to each other in the bridge length direction, so that the displacement in the bridge length direction is absorbed. When the finger members 1, 1..., 2, 2,... On both sides are connected to a rotary table attached to the chassis on each side, displacement in the direction perpendicular to the bridge axis and rotation of the chassis are also absorbed. . However, in order to ensure smooth movement of the finger members 1, 1..., 2, 2,... On both sides, a large number of gaps 3, 3 and 4 are required between adjacent finger members. This causes the following problems.
[0005]
Since a finger enters a gap between the finger members, particularly a large gap 4 generated between each pair of finger members, there is a risk of injury. Especially in buildings such as hospitals where a large number of unspecified people come and go, there is a possibility that children may put their fingers in the gaps in a playful mood, which is not only dirty but also injured. In addition, there is a concern of falling over the gap.
[0006]
Since there are many gaps, entry of foreign matter such as dust becomes a problem.
[0007]
Although not directly related to the gap, the surface of the finger member is slippery and there is a risk of promoting a fall accident.
[0008]
In order to solve these problems, it is conceivable to lay a flooring on the expansion joint. In addition, there is also a demand to actively squeeze marble, granite, etc. in order to give a sense of design luxury.
[0009]
However, when the floor material is a soft material such as carpet, a dent is formed in the gap. In the case of hard materials such as marble and granite, the material will peel or break whenever the building is shaken. For this reason, high-quality flooring such as marble and granite cannot be used.
[0010]
An object of the present invention is to provide an expansion joint that is flat with little gaps and high in safety, and that does not peel off or break even when high-grade flooring such as marble or granite is laid.
[0011]
[Means for Solving the Problems]
The expansion joint of the present invention is an expansion joint used for a communication passage connecting between buildings or between the building and the ground, and is disposed between the frames on both sides and inclined with respect to the longitudinal direction of the passage. It has at least one wedge-shaped floor member having a horizontal inclined surface, and both the chassis-side floor members are abutted against the wedge-shaped floor member from both sides, and the chassis-side floor member and the wedge-shaped member are abutting surfaces at the abutting portions on both sides. The frame-side floor member and the wedge-shaped floor member are connected so that they can move relative to each other.
[0012]
A particularly desirable configuration includes a pair of wedge-shaped floor members that are combined by abutting inclined surfaces, and the wedge-shaped floor members are interconnected so that the pair of wedge-shaped floor members can move relative to each other at the butted portion. In addition, the pair of wedge-shaped floor members are faced to the opposite sides of the frame-side floor members, the abutting surfaces of the both-side frame-side floor members and the wedge-shaped floor members bulge toward the wedge-shaped floor members, and the inclined surfaces of the wedge-shaped floor members are tangent. In this arc-shaped butting portion, the housing-side floor member and the wedge-shaped floor member are connected so that the housing-side floor member and the wedge-shaped floor member can move relative to each other along the abutting surface.
[0013]
In the expansion joint of the present invention, when the skeletons on both sides approach, a pushing force in the longitudinal direction of the passage is applied to the inclined surface of the wedge-shaped floor member. This pushing force is decomposed into a component in a direction parallel to the inclined surface and a component in the lateral width direction of the passage. The wedge-shaped floor member is pushed out to the outside in the lateral width direction of the passage by the component in the lateral width direction of the passage. On the contrary, when the housings on both sides are separated, the wedge-shaped floor member is pulled inward in the lateral width direction of the passage by the pulling force acting on the inclined surface.
[0014]
Thus, in the expansion joint of the present invention, the so-called wedge action on the inclined surface of the wedge-shaped floor member absorbs the displacement in the bridge length direction without expanding the gap between the butted portions.
[0015]
When the frame on both sides is displaced in the horizontal direction perpendicular to the bridge length direction, the frame side floor member and the wedge-shaped floor member move relative to each other at the abutting portion, and the wedge-shaped floor member follows this movement as necessary. This displacement is absorbed.
[0016]
When the abutment surface of the housing-side floor member and the wedge-shaped floor member is an arc whose tangent is the inclined surface of the wedge-shaped floor member, the rotation (twist) of the housing is absorbed by this arc. In addition, as will be described in detail in a later embodiment, the displacement in the bridge length direction and in the horizontal direction perpendicular to the bridge length direction are also absorbed without widening the gap between the butted portions.
[0017]
In addition, both members do not necessarily have to be in contact with each other at the abutting portion. When in contact, the gap is completely eliminated from the expansion joint. Moreover, even if both members are in contact, the relative movement of both members along the abutting surface is possible. When both members are separated from each other, a gap is formed here, but the size may be very small and the number thereof is also small. In any case, in the present invention, the surface of the expansion joint is substantially flat.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below based on illustrated examples. 1 is a plan view of an expansion joint showing one embodiment of the present invention, FIG. 2 is a view taken along the line AA in FIG. 1, FIG. 3 is a view taken along the line BB in FIG. 1, and FIGS. FIG. 3 is a schematic plan view showing the operation of the expansion joint in a deformed manner.
[0019]
As shown in FIGS. 1 to 3, the expansion joint is constructed between the housings A and B to form a bridge-shaped communication passage. The expansion joint includes a floor member 10a fixed to the case A side, a floor member 10b fixed to the side of the case B, and two wedge-shaped members arranged between the floor members 10a and 10b in the bridge length direction. Floor members 20a and 20b. These floor members are arranged on the same plane and constitute a horizontal floor of the communication passage.
[0020]
The floor member 10a on the case A side is fixed on a deck 30a installed on the case A. Similarly, the floor member 10b on the case B side is fixed on the deck 30b installed on the case B. As will be described in detail later, the end surfaces of the floor members 10a and 10b facing each other are arcuate surfaces 11a and 11b that swell toward the opposite side.
[0021]
The wedge-shaped floor member 20a on the housing A side is a right-angled triangular member whose end surface on the housing B side is inclined with respect to the bridge axis, and the end surface on the housing A side is an arc surface corresponding to the arc surface 11a of the floor member 10a. 21a is abutted against the circular arc surface 11a of the floor member 10a on the case A side. The inclined surface 22a of the wedge-shaped floor member 20a is a tangent to the circular arc surfaces 11a and 21a.
[0022]
On the other hand, the wedge-shaped floor member 20b on the housing B side is a triangular member whose end surface on the housing A side is an inclined surface 22b corresponding to the inclined surface 22a of the wedge-shaped floor member 20a on the housing A side, and the inclined surface 21b. Is abutted against the inclined surface 22a of the wedge-shaped floor member 20a. An end surface of the wedge-shaped floor member 20b on the housing B side is an arc surface 21b corresponding to the arc surface 11b of the floor member 10b on the housing B side, and is abutted against the arc surface 11b of the floor member 10b. The inclined surface 22b of the wedge-shaped floor member 20b is also tangent to the arc surfaces 11b and 21b.
[0023]
The wedge-shaped floor members 20a and 20b also serve as a pair of connecting members 40a and 40a on both sides that also serve as a support member placed on the deck 30a on the chassis A side, and a support member that rests on the deck 30b on the chassis B side. It is supported by a pair of connecting members 40b and 50b on both sides.
[0024]
The connecting members 40a and 50a on the housing A side are both fixed to the lower surface of the wedge-shaped floor member 20a on the housing A side, and can freely move on the deck 30a on the housing A side.
[0025]
One connecting member 40a has an arcuate curved guide 41a corresponding to the arcuate surfaces 11a and 21a at the edge on the floor member 10a side, and this is provided with an arcuate groove provided on the lower surface of the floor member 10a. By fitting in the groove of the guide 12a, both members are connected so that the floor member 10a and the wedge-shaped floor member 20a can move relative to each other along the arcuate surfaces 11a and 21a.
[0026]
The other connecting member 50a has arcuate curved guides 51a corresponding to the arcuate surfaces 11a and 21a at the edge on the floor member 10a side, and the inclined surfaces 12a and 22a at the edge on the wedged floor member 20b side. Correspondingly inclined linear guides 52a are provided. The curved guide 51a is fitted in the groove of the arcuate grooved guide 13a provided on the lower surface of the floor member 10a, whereby the floor member 10a and the wedge-shaped floor member 20a are relatively aligned along the arcuate surfaces 11a and 21a. Both members are connected so that they can move. On the other hand, the linear guide 52a is fitted into the groove of the linear grooved guide 23b provided on the lower surface of the wedge-shaped floor member 20b, whereby the wedge-shaped floor member 20a and the wedge-shaped floor member 20b are inclined surfaces 22a and 22b. The two members are coupled so that they can move relative to each other.
[0027]
The connecting members 40b and 50b on the chassis B side are fixed to the lower surface of the wedge-shaped floor member 20b on the chassis B side, and are connected to the deck 30b on the chassis B side, similarly to the connecting members 40a and 50a on the chassis A side. You can move freely on it.
[0028]
One connecting member 40b has arcuate curved guides 51b corresponding to the arcuate surfaces 11b and 21b at the edge on the floor member 10b side, and the inclined surfaces 22a and 22b at the edge on the wedge-like floor member 20a side. Correspondingly inclined linear guides 52b are provided. The curved guide 51b is fitted into the groove of the arc-shaped grooved guide 13b provided on the lower surface of the floor member 10b, whereby the floor member 10b and the wedge-shaped floor member 20b are relatively moved along the arc surfaces 11b and 21b. Both members are connected so that they can move. On the other hand, the linear guide 52b is fitted into the groove of the linear grooved guide 23a provided on the lower surface of the wedge-shaped floor member 20a, whereby the wedge-shaped floor member 20a and the wedge-shaped floor member 20b are inclined surfaces 22a and 22a. The two members are coupled so that they can move relative to each other.
[0029]
The other connecting member 50b has an arcuate curved guide 41b corresponding to the arcuate surfaces 11b and 21b at the edge on the floor member 10b side, which is provided with an arcuate groove provided on the lower surface of the floor member 10b. By fitting into the groove of the guide 12b, the two members are connected so that the floor member 10b and the wedge-shaped floor member 20b can move relative to each other along the arcuate surfaces 11b and 21b.
[0030]
Next, the operation of the expansion joint will be described with reference to the schematic diagrams of FIGS.
[0031]
When the housings A and B are separated, the floor members 10a and 10b fixed to the housings A and B are separated as shown in FIG. Here, the floor member 10a on the case A side and the wedge-shaped floor member 20a are connected by connecting members 40a and 50a so as to be relatively movable along the arcuate surfaces 11a and 21a. The wedge-shaped floor member 20a and the wedge-shaped floor member 20b are connected by connecting members 40b and 50a so as to be relatively movable along the inclined surfaces 22a and 22a. The floor member 10b on the housing B side and the wedge-shaped floor member 20b are connected by connecting members 40b and 50b so as to be relatively movable along the circular arc surfaces 11b and 21b. In addition, the inclined surfaces 22a and 22b of the wedge-shaped floor members 20a and 20b that face each other are tangent to the circular arc surfaces 11a, 21a, 11b, and 21b.
[0032]
Accordingly, the wedge-shaped floor members 20a and 20b are separated by rotating in the opposite direction along the arc surfaces 11a and 11b of the floor members 10a and 10b while sliding at the abutting portions (inclined surfaces 22a and 22b). At this time, when the inclined surfaces 22a and 22b of the wedge-shaped floor members 20a and 20b are not tangent to the circular arc surfaces 11a, 21a, 11b and 21b, a gap is likely to be generated between the members. Due to the connection by 40b, 50a, 50b, there is no gap, so no member movement is performed. In this regard, when the arc surfaces 11a, 21a, 11b, and 21b are provided, it is essential that the inclined surfaces 22a and 22b of the wedge-shaped floor members 20a and 20b be tangent to the arc.
[0033]
When the casings A and B approach, the wedge-shaped floor members 20a and 20b move in the opposite direction, and the displacement is absorbed.
[0034]
Thus, the displacement in the bridge length direction is absorbed.
[0035]
When the frames A and B are displaced in the horizontal direction perpendicular to the bridge length direction, as shown in FIG. 5, the wedge-shaped floor members 20a and 20b slide on the butted portions (inclined surfaces 22a and 22b), and the floor member 10a. , 10b along the arcuate surfaces 11a, 11b in the same direction, the displacement is absorbed. Also in this case, the inclined surfaces 22a and 22b of the wedge-shaped floor members 20a and 20b need to be tangent to the arc surfaces 11a, 21a, 11b, and 21b.
[0036]
When the casings A and B are rotationally displaced, as shown in FIG. 6, the floor members 10a and 10b slide at the abutting portions (arc surfaces 11a, 21a, 11b, and 21b) with the wedge-shaped floor members 20a and 20b. The rotational displacement is absorbed by turning around the center of the arc.
[0037]
As described above, the expansion joint absorbs displacement in the bridge length direction, horizontal displacement perpendicular to the bridge length direction, and rotational displacement.
[0038]
In addition, in this expansion joint, even if the members to be abutted are brought into contact with each other, the operation is guaranteed, and even if a gap is provided, the size may be very small, and the number of the gaps is only three. Therefore, a substantially flat floor surface is formed. Such a floor surface is safer than the finger type in which many large gaps are generated, and problems due to dust accumulation are also avoided.
[0039]
In addition, if the floor material is affixed independently to the surfaces of the floor members 10a and 10b and the wedge-shaped floor members 20a and 20b, a substantially unbroken floor surface can be obtained, and even if these members cause relative movement, the floor material No peeling or cracking occurs. Therefore, it is possible to use high-quality floor materials such as marble and granite.
[0040]
The inclination angle of the inclined surfaces 22a and 22b related to displacement absorption is preferably 15 degrees or more in order to make the member move smoothly. Further, the radius of the arc is appropriately selected in consideration of the passage width and the like so as to ensure this inclination angle.
[0041]
FIG. 7 is a plan view of an expansion joint showing another embodiment of the present invention. This expansion joint has the above-mentioned expansion joint in that the butted surfaces of the floor member 10a and the wedge-shaped floor member 20a and the butted surfaces of the floor member 10b and the wedge-shaped floor member 20b are linear sliding surfaces perpendicular to the bridge length direction. Is different.
[0042]
Such an expansion joint cannot absorb rotational displacement, but can absorb displacement in the bridge length direction and horizontal displacement perpendicular to the bridge length direction. Moreover, the same effects as the above-described expansion joint can be obtained in terms of safety, prevention of peeling / breaking of the flooring, and the like.
[0043]
FIG. 8 is a plan view of an expansion joint showing still another embodiment of the present invention. This expansion joint has the shape of an isosceles triangle in which the floor members 10a and 10b are right triangles with the inclined surfaces facing each other symmetrically, and the wedge-shaped floor member 20 is sandwiched between the inclined surfaces of the floor members 10a and 10b. There is a difference from the expansion joint of FIG.
[0044]
That is, the floor members 10a and 10b are connected and fixed to the casings A and B. Further, the wedge-shaped floor member 20 is connected to the floor members 10a and 10b so as to be relatively movable along the inclined surfaces in a state where the two inclined surfaces are abutted against the inclined surfaces of the floor members 10a and 10b.
[0045]
In such an expansion joint, as shown in FIG. 9 and FIG. 10, the displacement in the bridge length direction and the horizontal direction perpendicular to the bridge length direction are caused by the movement of the members along the inclined surfaces that face each other. Displacement is absorbed. With regard to safety and prevention of peeling and cracking of the floor material, since the number of members is smaller than that of the above-mentioned expansion joint, a further excellent effect can be obtained.
[0046]
Although the number of members increases, the butted portions of the casings A and B and the floor members 10a and 10b can be moved relative to each other so that the floor members 10a and 10b are like wedge-shaped floor members 20a and 20b in the expansion joint of FIG. It is also possible to function.
[0047]
【The invention's effect】
As is clear from the above description, the expansion joint of the present invention has at least one wedge-shaped floor member having a horizontal inclined surface inclined with respect to the longitudinal direction of the passage, disposed between the housings on both sides, By utilizing the wedge action, the flat slide structure that absorbs the relative displacement between the casings is formed, so that a substantially flat floor surface can be constructed. Therefore, there is no danger of accidents such as pinching a finger in the gap, and it is extremely safe. Moreover, there is almost no problem that dust accumulates. Furthermore, since the number of members is small, a flooring can be stuck independently on each member. For this reason, even if high-grade flooring such as marble or granite is laid, peeling or damage does not occur. Therefore, it is possible to use a high-grade flooring material such as marble or granite, and the use can give an unprecedented high-class feeling to the connecting passage.
[Brief description of the drawings]
FIG. 1 is a plan view of an expansion joint showing an embodiment of the present invention.
FIG. 2 is a view taken along the line AA in FIG.
FIG. 3 is a view taken along line B-B in FIG. 1;
FIG. 4 is a schematic plan view showing the operation of the expansion joint (absorption operation for displacement in the bridge length direction) in a deformed manner.
FIG. 5 is a schematic plan view showing deformation of the expansion joint (displacement absorption in a direction perpendicular to the bridge length direction).
FIG. 6 is a schematic plan view showing deformation of the expansion joint (absorption operation of rotational displacement).
FIG. 7 is a plan view of an expansion joint showing another embodiment of the present invention.
FIG. 8 is a plan view of an expansion joint showing still another embodiment of the present invention.
FIG. 9 is a plan view showing the operation of the expansion joint (absorption operation for displacement in the bridge length direction).
FIG. 10 is a plan view showing the operation of the expansion joint (absorption operation of displacement in a direction perpendicular to the bridge length direction).
FIG. 11 is a perspective view showing a structure of a conventional expansion joint.
[Explanation of symbols]
A, B Housings 10a, 10b Floor members 11a, 11b connected to housings A, B, respectively Arc surfaces 20, 20a, 20b Wedge-like floor members 21a, 21b Arc-like surfaces of wedge-like floor members 20a, 20b 22a, 22b Inclined surfaces 30a, 30b of wedge-shaped floor members 20a, 20b Deck 40a, 40b, 50a, 50b Connecting members 41a, 41b, 51a, 51b that also serve as support members Arc-shaped curved guides 42b, 52a Inclined linear guides

Claims (2)

An expansion joint used for a connecting passage that connects between buildings and between the building and the ground, etc., and is arranged between the frame on both sides and has a horizontal inclined surface that is inclined with respect to the longitudinal direction of the passage At least one wedge-shaped floor member is provided, and both the chassis-side floor members are abutted against the wedge-shaped floor member from both sides, and the chassis-side floor member and the wedge-shaped member can move relative to each other along the abutting surface at the abutting portions on both sides. As described above, the expansion joint is characterized in that the frame-side floor member and the wedge-shaped floor member are connected. A pair of wedge-shaped floor members that are combined by abutting inclined surfaces, and the wedge-shaped floor members are interconnected so that the pair of wedge-shaped floor members can move relative to each other along the abutting surface; The wedge-side floor member is abutted with the opposite sides of the chassis-side floor member, the abutting surfaces of the opposite sides of the cabinet-side floor member and the wedge-like floor member swell toward the wedge-like floor member, and the arc is tangent to the inclined surface of the wedge-like floor member. The housing-side floor member and the wedge-shaped floor member are connected so that the housing-side floor member and the wedge-shaped floor member can move relative to each other along the abutting surface at the arc-shaped butting portion. The expansion joint described.

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