JP2022087580A - Cover body of expansion joint, expansion joint, fixing structure of cover material end part, and support structure of cover material - Google Patents

Abstract

To prevent a synthetic resin-made cover material formed so as to be freely expanded and contracted in an expansion joint for an outer wall from being deformed or sagging by its own weight even when receiving a negative pressure.SOLUTION: A cover material 3 is formed in a shape in which a mountain fold part 3a and a valley fold part 3b are repeated, a projecting surface part 33 projecting to the back side is integrally provided on a valley fold part 31b facing the back side, and a hole part 33a is formed on the projecting surface part 33. An extensible support member 4 laid in the gap G is inserted into the hole part 33a and integrally connected by a wire 6.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cover body constituting an expansion joint installed in a gap of a structure and an expansion joint using the cover body.

In a large structure, in order to avoid the influence of the temperature change of the skeleton that composes it and the load applied in the event of an earthquake, the structure is divided into a plurality of skeletons and a gap between the skeletons (hereinafter, also referred to as "clearance"). ) Was provided, and each gap was configured to absorb stress by following deformation even if the skeletons were displaced in different directions while the skeletons on both sides of the gap were integrally connected. Expansion joints are installed.

As an expansion joint installed at the joint part of the outer wall surface of the skeleton facing each other with a gap in between, a cover material made of synthetic resin formed in a bellows shape with repeated mountain folds and valley folds is used, and this is used as the joint part. It is known that the structure is such that the outer wall surfaces of the skeleton facing the gap are connected to each other.

The cover material of such an expansion joint is required to have a function of following the displacement of the skeleton on both sides of the gap to absorb stress and at the same time maintaining the watertightness of the joint portion even in strong wind and rain. At present, most of them are molded using a rubber material having a relatively high hardness (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 9-9497

In the conventional expansion joint installed at the joint portion of the outer wall surface of the skeleton, both sides of the bellows-shaped cover material spanning between the skeletons are fitted into the concave grooves formed at the ends of both skeletons. It is configured by installing a support member that is connected and passed between the frames on the back side of the cover material, and the cover material has a bellows shape and has a large surface rigidity, and receives wind. The cover material does not easily flutter when it hits, and even if a large wind pressure is applied to the cover material during strong winds, the cover material is supported by the support member hitting its back surface, so that the cover material shifts or dents in the gap. It is provided so that it is difficult to do.

However, in the conventional expansion joint, when a large wind pressure is applied, the support member hits the back surface portion of the cover material to prevent the cover material from entering the gap and deforming. Since the cover material itself is not connected, when negative pressure is applied to the cover material, the cover material shifts to the outdoor side and flutters, and when a large negative pressure is applied, the cover material swells and deforms to the outdoor side. I had something to do.

Further, in the expansion joint, the connection portion between the cover material and the skeleton is formed by press-fitting the side end portion of the cover material into the concave groove provided in the skeleton, and the cover material has a large pulling force. When the cover material is added, the side end portion of the cover material may come off from the concave groove, that is, the specification is such that the allowable movable amount of the cover material is set small.
Therefore, when a situation occurs in which the cover material expands beyond the allowable movable amount, for example, when the cover material expands significantly following the expansion of the gap due to the occurrence of an earthquake, or when the cover material expands significantly, or according to a complicated seismic motion, the cover is covered. When the material expands or contracts, or when the cover material protrudes to the outdoor side due to the negative pressure applied, a large force is applied to pull out the side end of the cover material from the concave groove, and the cover is disengaged. There was a danger that the side edges of the material would fall off the skeleton. It is extremely important to secure a large amount of movement of the cover material in order to ensure safety so that it can respond to earthquake motions that exceed expectations.

On the other hand, instead of the configuration in which the side end portion of the cover material is fitted into the concave groove of the skeleton, or in addition to this, the side end portion of the cover material is attached to the metal fitting attached to the skeleton with a fastener such as a screw or a screw. Once fixed, the side edges of the cover material will not come off the skeleton.
However, when a large tensile force is applied to the cover material, stress may be concentrated on the portion fastened by the fastener which is the connection portion between the cover material and the metal fitting, and the cover material may be torn from that portion. When a flexible member such as a cover material made of synthetic resin is fixed to a skeleton, it is necessary to take measures to disperse the stress so that the stress does not concentrate on the portion fastened with a fastener or the like.

In addition, since the cover material molded into a bellows shape using a rubber material has a large surface area and a large weight, it is "dripping" due to its own weight in a state where it is mounted over the joint portion between the skeletons, that is, the entire bellows portion. Or, a part of it tends to hang irregularly or loosen.
Therefore, it is necessary to attach the cover material so that the tension is applied and the tension is maintained in consideration of the degree of self-weight sagging. However, in the expansion joint, the tension when attaching the cover material hits the back surface. It depends on the tension of the supporting member to support, and it is difficult to give an appropriate tension for mounting. Therefore, it was necessary to take appropriate measures such as hanging the back part of the cover material with a stainless wire to add tension depending on the construction site.

An object of the present invention is to solve the problems of the conventional expansion joint using a cover material made of synthetic resin. Further, in the present invention, when a flexible sheet-like member such as a cover material made of synthetic resin is fixed to a skeleton with a fastener, the stress generated by applying an external force is dispersed to disperse the fastener. The problem is to prevent damage from the part connected by. In the present invention, the flexible and elastically deformable cover material does not sag or bend in the gap due to its own weight, and maintains flatness along the gap to cover the gap. It is also an issue to be able to do it.

In order to solve the above problems, the present invention is a cover body that constitutes an expansion joint installed in a gap of a structure and is installed between one skeleton forming the gap and the other skeleton to cover the gap. In
A cover material installed in the gap having a shielding surface portion having a plurality of mountain folds and / or valley folds.
It consists of a stretchable support member installed between the two frames on the back side of the cover material.
It is characterized in that at least a part of the shielding surface portion of the cover material has a structure connected to the support member.

According to this, the cover body is configured by connecting a part of the shielding surface portion of the cover material to a stretchable support member arranged on the back surface side of the cover material, and the back surface of the cover material is supported by the support member. Therefore, even if a negative pressure is applied to the cover material, the cover material does not shift to the outdoor side and flutter, or swell and deform to the outdoor side.
When the skeleton gap is displaced due to the occurrence of an earthquake, the support member expands and contracts as the cover material expands and contracts along the gap width direction, so the displaced gap should be properly shielded by the cover material. Can be done.

The cover material constituting the cover body can be formed into a size that shields the skeleton gap by using a synthetic resin material having rubber elasticity and flexibility. In particular, it is preferable that the cover material is formed of a synthetic resin material having a hardness of 60 ° or more, and it is preferable to use a thermoplastic elastomer as the molding material from the viewpoint of ease of molding and processing cost.
In the cover material, a plurality of mountain folds and a plurality of valley folds are arranged along the width direction of the skeleton gap on the shielding surface portion, and the gap width is formed by opening or folding these mountain folds or valley folds. It is formed to expand or contract along the direction. The shielding surface portion may be formed in a shape in which mountain folds and valley folds are appropriately combined and arranged, or in a bellows shape in which mountain folds and valley folds are alternately repeated.

Like the cover material, the support member can be formed by using a synthetic resin material having rubber elasticity such as a thermoplastic elastomer. The support member may be erected in the gap on the back surface side of the cover material and may be made of a rubber material, a coil spring, or the like as long as it has a property of being able to expand and contract together with the cover material. Further, the support member is erected in the gap and connected to the cover material, and is tubular or plate-shaped regardless of the shape as long as it can expand and contract in the gap width direction integrally with the cover material to support the back side of the cover material. It can be formed into an appropriate shape such as a net-like shape or a bellows-like shape.

The reason why the support member is connected to the back side of the cover material is that the cover material swells by supporting the cover material with the support member when a negative pressure is applied to the cover material or the cover material shifts to the outdoor side and flutters. The "connection" here means that the support member regulates the deformation of the cover material toward the inside and outside of the gap, that is, the deformation of the cover material in the gap depth direction. It means that they are connected. The support member is inserted and connected to the hole provided in the shielding surface portion of the cover material, the support member is engaged with the engaging portion provided in the shielding surface portion, or the cover material is shielded. The aspect in which the face portion and the support member are connected by using a connecting member separate from both members is included.

Further, the connection also includes an embodiment in which a part of the shielding surface portion of the cover material and the support member are integrally connected. The term "connection" as used herein means a state in which a part of the shielding surface portion is inseparably connected to the support member on the back surface side of the cover material and is fixed or fixed. The connection between the cover material and the support member is, for example, a mode in which both members are bound by a wire material made of a metal or other material such as a wire or a stranded wire, or a mode in which the cover material and the support member are fastened with a connecting metal fitting such as a clip, gripped or placed on the metal fitting to be connected. , A mode of adhering with an adhesive, a mode of fixing with a fixing tool such as a screw or a screw, a mode of directly connecting or inserting a support member to a cover material, and the like. As long as a part of the cover material is inseparably connected to the support member, the mode of connection does not matter.

In the cover body having the above configuration, the cover material may be configured such that a protruding surface portion protruding toward the back surface is provided on the shielding surface portion thereof, and a support member is connected to the protruding surface portion.
It is preferable that the protruding surface portion is integrally formed with the shielding surface portion. The protruding surface portion formed separately from the cover material may be processed to be fixed to the cover material and integrated.

The cover body having the above structure can be configured by arranging a plurality of cover materials side by side in the gap width direction with respect to a wide gap. Specifically, a plurality of cover materials having end portions connected to each other are installed in the gap, and a support member installed on the back side of these cover materials is connected to a part of the shielding surface portion of each cover material. be able to.
The ends of the cover material may be connected to each other via a joint member, and the joint member and the support member may be connected to each other.
Since the back side of the joint member that connects the cover materials is also connected to the support member and supported, the cover material and the joint member are less likely to sag due to their own weight, and the gap is covered while the tension is maintained, and the skeleton fluctuates. It is possible to prevent occasional defects.
The joint member can be formed by using an appropriate material such as a steel material such as aluminum or stainless steel or a synthetic resin material, and providing connection portions at the ends of the cover material on both sides.

The cover body includes a plurality of cover materials having a shielding surface portion having the plurality of mountain folds and / or valley folds, a joint member connecting the ends of the cover materials, and the back side of the cover material and the joint member. It is composed of a stretchable support member installed between the two skeletons, and even when the joint member and the support member are connected, the cover material can be prevented from being deformed when a negative pressure is applied. can.

Further, the present invention is an expansion joint provided with a cover body having the above configuration and installed in a gap of a structure.
Connecting members are attached to the ends of the skeletons facing each other with the gap in between.
It is characterized in that both end portions of the cover body are connected to both connecting members, and the cover body spanning between the skeletons shields the gap.

As described above, when the end portion of the cover material is fastened to the metal fitting attached to the skeleton with a fastener and connected, stress is concentrated on the connection portion due to the external force applied to the cover material, and the connection portion is liable to be damaged. Therefore, it is necessary to take measures to disperse the stress.
As such a stress distribution means, the present invention has a structure in which an end portion of a flexible cover material is fixed to a skeleton.
The end of the cover material is bent by engaging the threading material, and the tip end side of the end of the bent cover material is the joint between the through material and the base material or joint member attached to the skeleton. It is characterized by having a structure sandwiched between base materials and screwed.

The expansion joint of the present invention applies the above structure, and the connecting member has a base material attached to a skeleton and a screw screwed into a portion sandwiching an end portion of the cover material between the base material and the base material. Equipped with a through material that can be attached to the base material together with the cover material
The end portion of the cover material is bent by engaging the threading material, and the tip end side of the end portion of the bent cover material is sandwiched between the through material and the base material and screwed. It is characterized by.
As an example of the above configuration, a base material attached to the skeleton and a through material formed in a substantially L-shaped cross section by a main surface portion and a bent surface portion bent from the end portion of the main surface portion are provided.
A first bent portion formed at the end of the cover material, which is folded back toward the other end of the cover material, and a second bent portion, which is folded back at the first bent portion, are bent at a substantially right angle. The bent surface portion and the main surface portion of the through material are engaged with the bent portion, respectively.
The main surface portion of the through material overlaps with the receiving surface portion provided on the base material, sandwiching the flat portion connected to the second bent portion of the cover material.
A screw may be screwed into the overlapping threading material, the cover material, and the base material, and the end portion of the cover material may be connected to the connecting member.

According to this, both end portions of the cover material engage the through material with the first bent portion and the second bent portion, and the flat end portions of the cover material are overlapped with the through material and the base material. Since the screw is screwed into this overlapping part to connect, stress does not concentrate on the connection part where the screw is screwed even if a large tensile force is applied to the cover material, and damage is caused from this part. It is difficult to do so, and the end of the cover material does not come off while maintaining a reliable and stable connection state, which is safe and it is possible to set a large allowable movable amount of the cover material.

The structure for fixing the end portion of the cover material can be applied to an embodiment in which the end portion of the cover material is attached to the joint member when the cover materials are connected to each other via the joint member.

As described above, the flexible and elastically deformable cover material tends to hang down or bend in the gap due to its own weight. Even if the support member is connected or connected and supported on the back surface side of the cover material, it may not be sufficient to prevent "sagging" of the cover material.
In order to solve this problem, the expansion join having the above configuration has a configuration in which the back surface side of the cover body is supported by a plurality of movable suspension mechanisms including a wire rod erected from one of the two skeletons facing the gap to the other. Is preferable.

The structure in which the elastically deformable cover material is supported by the movable suspension mechanism is such that the cover body is composed of the above-mentioned cover material and the support member supporting the back surface side thereof, and the cover body is supported in the gap. Also, the cover material can be applied to a configuration in which the cover material is installed in the skeleton gap without using a support member.
That is, the present invention is a structure that supports an elastically deformable cover material of an expansion joint installed in a gap of a structure.
With the engagement member attached to the back side of the cover material,
A engaging member attached to one of the frames facing the gap, and a pulling member attached below the engaging member and capable of advancing and retracting at the end.
By at least one movable suspension mechanism comprising a wire rod having one end attached to the end of the other skeleton facing the gap and having the other end attached to the end of the tension member via the two engaging members. ,
It has a structure in which an upward tension is applied to the cover material and is suspended and supported in the gap, and is characterized by having a movable followability of the skeleton.
With such a support structure, the cover material can be installed in the gap while maintaining flatness along the gap, and can cover the gap without causing "sagging" due to its own weight in the cover material.
The movable suspension mechanism is configured to include at least one engaging member attached to the back side of the cover material, an engaging member attached to the end of one of the skeletons, a tension member, and a wire rod stretched on each member. To. One or more other engaging members may be arranged on the wire rod stretching path to erection the wire rod. The tension member is a member capable of advancing or retracting its end, preferably a member capable of pulling out or returning the end with a constant force, such as a constant load spring or the like. An elastic member, a spring member, or the like can be used.
The engagement member is provided with a portion for engaging the wire rods to guide the tensioning direction thereof, and is a member having a function of transmitting the tension of the wire rod to another object or giving tension to the other, and is a pulley or a slipper. A member having a property and performing the above-mentioned function is used.

Further, according to the present invention, in the expansion joint having the above configuration, an engaging hook that engages with a hole of an engaging plate provided in the connecting member at the end of the support member and a stretchable hook that is attached to the outer surface of the engaging hook. It is characterized by having a structure provided with a flexible sleeve material.
Further, the expansion joint having the above-mentioned structure is characterized in that the cover materials arranged above and below have a structure in which the ends thereof are joined together and connected integrally.
In the above configuration, the wire rod includes a steel wire rod such as a wire, as well as a hard wire rod formed of a synthetic resin or other material.

It is a schematic plan view of one Embodiment of the expansion joint of this invention. It is a figure which showed the schematic structure of the back side of the expansion joint of FIG. 1 (the illustration of the bellows-shaped unevenness of a cover material is omitted). It is a top view of the contracted state (A) and the expanded state (B) of the cover material of FIG. FIG. 3 is an enlarged view showing a connection portion between the cover body and the skeleton of FIG. 1. It is a figure which showed the connection part of the connecting member and a cover material with the exterior material removed. It is an external view of the main part of a threading material. It is a figure which showed the aspect which connects the end portion of a support member to a connecting member. It is an enlarged view which showed the connection part of the cover body of FIG. 1 and a joint member. It is a figure which showed the connection part of the joint member and the cover material with the exterior material removed. It is an external view of the main part on the back side of a cover body. (A) and (B) are views showing other forms of the end portion of the support member. It is a figure which showed the schematic structure of the arrangement of the wire rod on the back side of the expansion joint of FIG. 1 (the illustration of the bellows-shaped unevenness of a cover material is omitted). It is an external view of the 1st engagement member in FIG. It is an external view of the 2nd engagement member in FIG. It is an external view of the tension member in FIG. (A) is a mode in which cover materials are joined up and down, and (B) is a schematic plan view of a connection piece held in the joint. It is a figure which showed the other mode of joining cover materials up and down.

A preferred embodiment of the present invention will be described with reference to the drawings. The technical idea of the present invention is not limited to the embodiments described below.

FIG. 1 is a schematic plan view of an embodiment of the expansion joint of the present invention, and FIG. 2 is a diagram showing a configuration seen from the back surface side, that is, the gap side of the expansion joint.
The illustrated expansion joint 1 is installed at the joint portion of the outer wall surface of the skeletons A and B facing each other across the gap G provided in the structure, and is installed at the end portion A1 of the skeleton A facing the gap G and the skeleton. The cover body 2 is bridged between the ends B1 of B, the gap G facing the outside is shielded by the cover body 2, and the outer wall surfaces A2 and B2 of the skeletons A and B are continuously connected by the cover body 2. It was done.

Specifically, the expansion joint 1 is installed at the outlet of the gap G and has both end portions of the cover body 2 stretchably formed in the width direction of the gap G so as to face the gap G between the skeleton A and the skeleton B. When the gap G is covered with the cover body 2 by connecting to the connecting members 7 and 7 provided at the ends A1 and B1, respectively, and the skeletons A and B are relatively displaced due to an earthquake or the like, causing expansion and contraction or displacement of the gap G. In addition, the cover body 2 expands and contracts in accordance with the displacement to absorb the displacement, and the outer wall surfaces A2 and B2 of the skeletons A and B are maintained on an integral wall surface without a defect. ..

The cover body 2 integrally connects the three cover materials 3, a plurality of stretchable support members 4 erected between the two skeletons A and B on the back side of the cover material 3, and the cover materials 3 and 3 to each other. A joint member 5 is provided, and the cover material 3 and the joint member 5 are integrally connected and fixed to the support member 4 with a steel wire 6 on the back surface side of the cover material 3.

Specifically, the cover material 3 is a member formed so as to be elastically deformable by using a material having rubber elasticity, preferably a thermoplastic elastomer having a hardness of 60 ° or more, and as shown in FIG. 3, on the front side. A shielding surface portion 31 that is formed in a bellows shape in which a facing mountain fold portion 31a and a valley fold portion 31b facing the back surface are alternately repeated, and a shielding surface portion 31 extending to a width covering the gap G, and a shielding surface portion 31 are provided on both sides of the shielding surface portion 31. The connecting portions 32 and 32 connected to the connecting members 7 and 7 are formed in a strip shape along the length direction of the gap G, that is, the height direction of the outer wall surfaces A2 and B2.

The connecting portions 32, 32 of the cover material 3 include a first bent portion 32a in which the end portion of the flat surface portion extending outward from the end portion of the shielding surface portion 31 is folded back toward the other end portion of the cover material 3. The tip portion folded back at the first bent portion 32a is bent toward the front side of the cover material via the second bent portion 32b bent at a substantially right angle, and the tip portion has a wall thickness protruding outward. A portion 32c is provided.
Further, a protruding surface portion 33 projecting to the back surface side is integrally provided at the valley fold portion 31b of the shielding surface portion 31 located at the center in the width direction of the cover material 3. A hole 33a through which the support member 4 is inserted is formed in the protruding surface portion 33.

Like the cover material 3, the support member 4 is a rod-shaped member formed elastically in the axial direction by using a material having rubber elasticity, preferably a thermoplastic elastomer, and hook-shaped members at both ends thereof. Engagement hooks 41 and 41 are integrally provided.
The support member 4 is formed to have a length shorter than the width of the gap G, and is bridged between the connecting members 7 and 7 in a state where both ends thereof are extended and tension is applied. .. As shown in FIG. 2, a plurality of support members 4 are erected between the skeletons A and B at appropriate intervals along the height direction of the gap G.

As shown in FIGS. 4 to 7, the connecting members 7 and 7 provided at the skeleton end portions A1 and B1 all include a base material 71, a through material 72 and an exterior material 73 formed of an aluminum profile. Is formed with. The base material 71, the through material 72, and the exterior material 73 can also be formed by using a steel material other than the aluminum profile material, a synthetic resin material, or the like.

The base material 71 has a recessed groove 71a in which the thick portion 32c of the cover material 3 fits at one end thereof, and an engaging plate 74 which is an L-shaped angle material is overlapped on the surface thereof to form an end portion of the skeleton. In the state of being applied to the gap G, a fastener S such as a bolt is driven into the end of the skeleton through the overlapping portion of the engaging plate 74 to be attached.
As shown in FIG. 5, the base material 71 has a flat receiving surface portion 71b on which the main surface portions 74a of the through member 74, which will be described later, overlap with each other, and the receiving surface portion 71b or the protruding surface portions 71c formed at intervals. The connecting portion 32 of the cover material 3 is provided so as to engage between the two.

As shown in FIG. 6, the through material 72 is a plate material having a substantially T-shaped cross section in which a folded surface portion 72b folded at a substantially right angle is connected to an end portion of a flat main surface portion 72a.
The threading material 72 is made of the threading material through the first and second bent portions 32a and 32b of the cover material 3 in a state where the thick portion 32c of the cover material 3 is fitted into the concave groove 71a of the base material 71. The bent surface portion 72b and the main surface portion 72a are engaged with each other, and the main surface portion 71a of the through material 71 overlaps with the receiving surface portion 71b of the base material 71 with a flat portion connected to the second bent portion 32b of the cover material 3 interposed therebetween. A screw, which is a fixing tool S, is screwed and fixed to the overlapping through material 71, the cover material 3, and the base material 71, and the connection portion 32 of the cover material 3 is sandwiched and attached to the cover material 71. It has become like.

As shown in FIG. 4, the exterior material 73 has a connecting portion 32 of the cover material 3 in which the thick portion 32c is press-fitted into the concave groove 71a of the base material 71, sandwiched between the base material 71 and the through material 72. The threading material 72 is covered from the gap G side, and the fastener S such as a set screw is driven from the outside into the overlapping threading material 72, the connecting portion 32 of the cover material 3, and the base material 71 to be attached. ..

In the engaging plate 74, a hole portion 74a is formed in a surface vertically protruding from the surface of the base material 71 toward the gap G side, and the engaging hook 41 of the support member 4 is engaged with the hole portion 74a. ing.
For attachment of the end portion of the support member 4 to the engagement plate 74, as shown in FIG. 7, the engagement hook 41 of the support member 4 is holed in a state where the engagement plate 74 is previously positioned on the tip side of the fastener S. Engage with the portion 74a, and in that state, screw the fastener S with the tool T to displace the engagement plate 74 toward the other end side of the fastener S, thereby extending between both ends of the support member 4. It can be installed in the gap G with tension applied.

As shown in FIGS. 8 to 9, the joint member 5 includes a joint base material 51, a through material 52, and an exterior material 53, all of which are formed of an aluminum profile. The joint base material 51, the through material 52, and the exterior material 53 can also be formed by using a steel material other than the aluminum profile, a synthetic resin material, or the like.

As shown in FIGS. 8 and 9, the joint base material 51 has recessed grooves 51a and 51a in which the thick portions 32c of the cover material 3 are aligned on both side portions on the front side thereof, and the back surface thereof is in the center thereof. It is formed in a shape having a protruding surface portion 51b protruding to the side. A hole 51c through which the support member 4 is inserted is formed in the protrusion 51b. Further, a flat receiving surface portion 51d is provided at the edge portion of the concave groove 51a.

The through material 52 is a plate material having a substantially T-shaped cross section at one end of the main surface portion 52a and the bent surface portion 52b, similarly to the through material 72 of the connecting member 7 shown in FIG.
The threading material 52 is a threading material through the first and second bent portions 32a and 32b of the cover material 3 in a state where the thick portion 32c of the cover material 3 is fitted into the concave groove 51a of the joint base material 51. The bent surface portion 52b and the main surface portion 52a are engaged with each other, and the flat portion connected to the second bent portion 32b of the cover material 3 is sandwiched between the receiving surface portion 51d of the joint base material 51 and the main surface portion 51a of the through material 52. Are overlapped, and a screw which is a fixing tool S is screwed and fixed to the overlapped through material 52, the cover material 3 and the joint base material 51, and the connection portion 32 of the cover material 3 is sandwiched between the overlapping material 52 and the joint base material 51. It is designed to be attached.

As shown in FIG. 8, the exterior material 53 is formed by press-fitting the thick portions 32c and 32c of the cover materials 3 and 3 integrally connected to the concave grooves 51a and 51a on both sides of the joint base material 51, respectively. , The threading material 52, 52 is superposed on the connecting parts 32, 32 of both cover materials 3.3, and the connecting parts 32, 32 are sandwiched between the joint base material 51 and the threading materials 52, 52, and the exterior is on the outside thereof. The material is covered, and the fastener S such as a set screw is driven into the overlapping through material 52, the connection portion 32 of the cover material 3, and the joint base material 51 to be attached. By fastening the exterior material 53 to the joint base material 51 with the fastener S, the side ends of the cover materials 3 and 3 are integrally connected to each other.

As described above, the cover body 2 is configured by connecting the side ends of the cover materials 3 and 3 to each other via the joint member 5, and in this embodiment, the three cover materials 3, 3 and 3 are connected to the joint member. It is configured by connecting 5 and 5 integrally.
Each of the cover material 3 and the joint member 5 is supported at a position where the support member 4 is passed through the hole 33a of the protrusion 33 in the cover material 3, and the joint member 5 is supported by the hole 51c of the protrusion 51b of the joint base material 51. At the position where the member 4 is passed, the wires 6 pierced into the support member 4 are hung around the outer periphery of both the protruding surface portions 33 and 51b, and are bound and integrally connected and fixed to the support member 4.
In the cover body 2, the three connected cover materials 3, 3 and 3 are expanded and displaced integrally with the support member 4, and the length between both side ends of the cover body 2 is extended to extend the end portion of the skeleton. It is designed to be bridged between A1 and B1 with tension applied.

As shown in FIG. 11, in order to make it difficult to disengage from the engaging hook 41 at the end of the support member 4 and the hole 74a of the engaging plate 74, a coil spring or the like is attached to the end of the support member 4 together with the engaging hook 41. The stretchable hollow sleeve material 42 may be integrally attached, the engaging hook 41 may be engaged with the hole portion 74a, and then the sleeve material 42 may be fitted to the outer peripheral surface of the engaging hook 41.

FIG. 12 shows the arrangement of the movable suspension mechanisms 8 and 8 having the movable followability of the skeletons A and B that support the cover body 2 of the expansion joint 1 on the back surface side of the cover body 2, that is, inside the gap G. ing.
Specifically, in the movable suspension mechanisms 8 and 8, the first engaging member 81 attached to the cover body 2 and displaced together with the cover body 2, the second engaging member 82 fixed to the skeleton, and the end portion can advance and retract. The wire rod W is bridged between the ends of the skeletons A and B sandwiching the gap G via the pulling member 83, and the back surface side of the cover body 2 is supported by the movable suspension mechanisms 8 and 8. By suspending the cover body 2 by applying an upward tension, the cover body 2 is configured to be held at a predetermined position in the gap G without causing "sagging" due to its own weight.
Although the figure shows a form in which the cover body 2 is supported by the two movable suspension mechanisms 8 and 8, the length dimension (dimension in the vertical height direction) of the gap G is large, and the cover covering the gap G is large. When the height of the body 2 is large, the cover body 2 is supported by the movable suspension mechanisms 8 and 8 installed in multiple stages above and below at predetermined intervals.

Specifically, as shown in FIG. 13, the engaging member 81 is attached to the back surface side of the joint member 5 connecting the cover materials 3 and 3 to each other, and the substrates 81a and 81a facing each other are spaced apart from each other. It is fixed to the joint member 5 with a fastener 81b such as a bolt. Both substrates 81a and 81a face each other via the shaft portion of the fastener 81b, and the wire rod W is passed between the substrates 81a and 81a and engaged with the shaft portion of the fastener 81b so as to be along the outer periphery of the shaft portion. The wire rod W is configured to be slidable.
As shown in FIG. 14, the engaging member 82 is attached to each connecting member 7 at the ends of the skeletons A and B facing the gap G, and like the engaging member 81, the substrates 82a facing each other are attached. , 82a are fixed to the connecting member 7 with fasteners 82b such as bolts at intervals from each other, and the wire rod W is passed between the two substrates 82a and 82a facing each other via the shaft portion of the fastener 82b and engaged with the shaft portion. Therefore, the wire rod W is configured to be able to slide along the outer periphery of the shaft portion.
Further, as shown in FIG. 15, the tension member 83 is attached to the connecting member 7 below the attachment position of the engagement member 82 of the skeletons A and B facing the gap G, and is attached to the main body frame 83a. , The end portion is pulled out with a constant force, and a tension holding member 83b having an extrusion function is mounted and configured.

As shown in FIG. 12, in the movable suspension mechanisms 8 and 8, the tip end portion of the wire rod W is hooked on the hook above the end portions of the skeletons A and B, and the intermediate portion thereof is hung around the shaft portion of the engagement member 81. It is stretched in a V shape, and is further hung around the shaft portion of the engaging member 82 and pulled downward, and the other end of the wire rod W is connected to the tension holding member 83b of the tension member 83 via the turnbuckle 83c. It is connected to the movable end of the skeleton and is stretched between both skeletons A and B. In the movable suspension mechanisms 8 and 8, the tensioning angle θ of the wire rod W hung around the shaft portion of the engagement member 81 is set to an appropriate angle, and the vertical straight lines passing through the shaft portion are at approximately equal intervals on the left and right. As you can see, it is erected with tension.
The stretching angle θ can be set, for example, in the range of 20 ° to 150 °. Alternatively, the angle can be set from 60 ° to 100 ° in a narrower range.

As shown in FIG. 12, in the cover body 2 of the expansion joint 1, the three cover materials 3, 3 and 3 are connected to each other by the two joint members 5, 5 at the ends of the adjacent cover materials 3, 3. The back surface side thereof is supported by a plurality of support members 4, and the engagement members 81 and 81 are fixed to the two joint members 5 and 5 on the back surface side of the cover body 2, respectively. Wires W and W are hung around 81 to suspend a set of movable suspension mechanisms 8 and 8 between the skeletons A and B.
As shown in the figure, the tensioning angles θ of the wire rods W hung around the engaging members 81 and 81 of both joint members 5 and 5 are both set to substantially the same angle from 70 ° to 100 °. Forces are evenly applied from the movable suspension mechanisms 8 and 8 to the cover body 2 via the joint members 5 and 5 from both movable suspension mechanisms 8 and 8. Therefore, when the cover body 2 expands and contracts in response to the expansion and contraction of the width of the gap G due to the displacement of the skeleton gap, between the skeleton A and one joint member 5, between both joint members 5, 5, and others. The width of each cover material 3 between the joint member 5 and the skeleton B can be expanded and contracted at substantially equal intervals by the movable suspension mechanisms 8 and 8 that expand and contract in conjunction with each other.
Even when the displacement of the skeleton gap occurs, the design of the cover body 2 when viewed from the outside can be maintained, and the cover body 2 can be held at a predetermined position in the gap G even after the displacement occurs.

FIG. 16 shows an embodiment in which the cover materials 3 and 3 are joined up and down to increase the vertical length dimension of the cover body 2 when the dimension of the gap G in the length direction is large.
In this case, with the ends of the cover materials 3 and 3 to be joined up and down in contact with each other, the connection piece 9 having an appropriate length shown in FIG. By stacking the surface portions 31 and 31 on the back surface side and fixing them with an adhesive, the cover materials 3 and 3 can be integrally connected vertically.
The connection piece 9 is made of the same material as the cover material 3, and is formed to have an appropriate length and a bellows-shaped end face shape that is the same as the shielding surface portion 31 of the cover material 3. By stacking and fixing the connection piece 9 on the back surface side of the shielding surface portions 31 and 31 of the cover materials 3 and 3 having the ends abutting on the top and bottom, the cover materials 3 and 3 are integrated together without opening a gap. It is possible to connect.

In this case, the cover material 3 is arranged vertically by using the connection piece 9 having a smaller number of mountain folds and valley folds than the bellows type cover material 3 having many mountain folds and valley folds of the shielding surface portion 31. When connecting 3 to each other, a plurality of connection pieces 9 are arranged and joined in series along the mountain fold and valley fold of the cover material 3, and each connection piece 9 is connected to the shielding surface portions 31, 31 of both cover materials 3, 3. And fix it on top of each other. Since the ends of the adjacent connecting pieces 9 and 9 overlap each other, the connecting pieces 9 fit into the surface of the cover material 3 and adhere to the upper and lower cover materials 3 and 3 without forming a gap in the bellows-shaped unevenness. It is possible to fix it. Further, by arranging the connection pieces 9 in series with their ends overlapped with each other, it is possible to connect the cover materials 3 and 3 having large dimensions in the width direction.

FIG. 17 shows another mode in which the cover materials 3 and 3 are joined up and down.
In this case, notches are appropriately formed in the connecting portions 32, 32 on both sides of the cover materials 3 and 3 to be joined up and down and the protruding surface portion 33 on the back surface, and the lower part and the lower portion of the covering surface portion 31 of the upper cover material 3 are formed. The upper portions of the covering surface portion 31 of the cover material 3 on the side can be provided so as to overlap each other and the cutout portions to abut and integrally connect to each other. For fixing the connected portion, a fixing member such as double-sided tape can be used.

The form of the cover material 3, the support member 4, the joint member 5, and the connecting member 7 shown in the figure is an example, and the present invention is not limited to the form shown in the figure. The illustrated cover material 3 is provided with one protruding surface portion 33 having a protruding hole portion 33a in the center on the back surface side thereof, but a plurality of them may be provided.
FIG. 12 shows an embodiment in which a cover body 2 configured by connecting a plurality of cover materials 3 via a joint member 5 is supported by a movable suspension mechanism 8, but the cover material 3 is not connected by the joint member 5. Is also applicable. In this case, the first engaging member 81 of the movable suspension mechanism 8 is attached directly to the back surface side of the cover material 3 or via an attachment member attached to the cover material 3.
Further, the mode of supporting by the movable suspension mechanism 8 is a mode in which the back surface side of the cover material 3 is not supported by the support member 4, that is, a mode in which only the cover material 3 is installed in the gap G, or a cover connected by the joint member 5. It is also applicable to the embodiment in which the material 3 is installed in the gap G. By supporting the cover material 3 with the movable suspension mechanism 8, it is possible to suppress the occurrence of deformation due to its own weight. In the illustrated form, the cover body 2 is supported by two (one set) movable suspension mechanisms 8 and 8, but depending on the installation conditions of the expansion joint 1, one movable suspension mechanism 8 may be used to support the cover body 2. It is also possible to support by using the above or two or more sets of movable suspension mechanisms 8.
Further, although the expanded joint 1 shown in the figure covers the gap G on the outer wall surface, it can also be applied to the gap provided on the indoor wall surface of the structure.

1 Expansion joint, 2 Cover body, 3 Cover material, 31 Shielding surface part, 32 Connection part, 4 Support member, 5 Joint member, 6 Wire, 7 Connecting member, 8 Movable suspension mechanism, 9 Connection piece, A, B frame, G Gap, S fastener, W wire

Claims (15)

In a cover body that constitutes an expansion joint installed in a gap of a structure and is installed between one skeleton forming the gap and the other skeleton to cover the gap.
A cover material installed in the gap having a shielding surface portion having a plurality of mountain folds and / or valley folds.
It consists of a stretchable support member installed between the two frames on the back side of the cover material.
A cover body of an expansion joint, characterized in that at least a part of a shielding surface portion of the cover material is connected to the support member. The cover body for an expansion joint according to claim 1, wherein the cover material has a protruding surface portion protruding toward the back surface on the shielding surface portion, and has a configuration in which a support member is connected to the protruding surface portion. A feature is that a plurality of cover materials having end portions connected to each other are installed in a gap, and a part of a shielding surface portion of each cover material is connected to a support member installed on the back side of these cover materials. The cover body of the expansion joint according to claim 1 or 2. The cover body of an expansion joint according to claim 3, wherein the ends of the cover material are connected to each other via a joint member, and the joint member and the support member are connected to each other. In a cover body that constitutes an expansion joint installed in a gap of a structure and is installed between one skeleton forming the gap and the other skeleton to cover the gap.
A plurality of cover materials installed in the gap having a shielding surface portion having a plurality of mountain folds and / or valley folds.
A joint member that connects the ends of the cover material and
It consists of a stretchable support member installed between the two skeletons on the back side of the cover material and the joint member.
A cover body of an expansion joint, wherein the joint member has a structure connected to the support member. The cover body of an expansion joint according to any one of claims 1 to 5, wherein the cover material has a hardness of 60 ° or more. The cover body of an expansion joint according to any one of claims 1 to 6, wherein the cover material is made of a thermoplastic elastomer. The cover body according to any one of claims 1 to 7, wherein the connection between the cover material and / or the joint member and the support member is a connection in which the connection portions are fixed to each other. An expansion joint provided with a cover body according to any one of claims 1 to 8, which is installed in a gap of a structure.
Connecting members are attached to the ends of the skeletons facing each other with the gap in between.
An expansion joint characterized in that both end portions of the cover body are connected to both connecting members, and the cover body spanning between the skeletons shields a gap. The connecting member includes a base material to be attached to the skeleton and a through material to which a screw is screwed into a portion sandwiching the end of the cover material with the base material and attached to the base material together with the cover material.
The end portion of the cover material is bent by engaging the threading material, and the tip end side of the end portion of the bent cover material is sandwiched between the through material and the base material and screwed. The expansion joint according to claim 9. A claim having a configuration in which an engaging hook that engages with a hole of an engaging plate provided in the connecting member and a stretchable sleeve material that is attached to the outer surface of the engaging hook are provided at the end of the support member. The expansion joint according to 9 or 10. 6. Expansion joint. The expansion joint according to any one of claims 9 to 12, which has a structure in which the cover materials are joined up and down and connected integrally. In a structure in which the end of a cover material of an expansion joint installed in a gap of a structure is fixed to a frame facing the gap or a joint member connecting the cover materials.
The end of the cover material is bent by engaging the through material, and the tip end side of the end of the bent cover material is the joint between the through material and the base material or joint member attached to the skeleton. A fixed structure at the end of the cover material, which is characterized by having a structure sandwiched between base materials and screwed. It is a structure that supports the elastically deformable cover material of the expansion joint installed in the gap of the structure.
With the engagement member attached to the back side of the cover material,
A engaging member attached to one of the frames facing the gap, and a pulling member attached below the engaging member and capable of advancing and retracting at the end.
By at least one movable suspension mechanism comprising a wire rod having one end attached to the end of the other skeleton facing the gap and having the other end attached to the end of the tension member via the two engaging members. ,
A support structure for a cover material, which comprises a structure in which an upward tension is applied to the cover material to suspend and support the cover material in a gap.

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