JP5665420B2 - Panel joint structure - Google Patents

Description

  The present invention relates to a joint structure of a panel. More specifically, the present invention relates to an improvement in a joint structure of a panel on an outer wall or the like of a building.

  In order to make the joint between the outer wall panels of the building watertight, place an irregular sealing material in the groove or gap formed in the joint, or load a regular sealing material called a regular sealing material or gasket. Has been done. There is also a joint structure with a combination of an irregularly shaped sealing material and a shaped material.

  As described in Patent Document 1, the applicant does not remove the irregular sealing material at the time of renovation, removes only the irregular molding material, and places a new irregular sealing material in the space formed by the removal of the irregular molding material. Therefore, a joint structure that can maintain waterproof performance has been developed. Such a joint structure can greatly reduce the labor required for repairing, but forming protrusions on the shaped material has a problem in that it takes time and cost to manufacture the shaped material.

  Therefore, the applicant has newly developed a joint structure in which the irregular shaped sealing material is pressed into the groove while the irregular shaped sealing material is uncured to closely adhere to the irregular shaped sealing material, and the irregular shaped sealing material is held by the adhesive force of the surface of the irregular shaped sealing material. Developed. In the case of such a joint structure, it is not necessary to provide protrusions on the shaped material, and a joint structure having a simple shape and advantageous in terms of cost can be obtained.

JP 2006-283509 A

  However, the adhesion between the irregular sealing material and the irregular shape material is insufficient, and a void may be formed between the irregular sealing material and the irregular shape material, and the air trapped in the void expands due to temperature changes. This may cause the shaped material to come off, cause the shaped material to come off due to freezing and expansion of moisture such as rainwater that has entered the voids, or form the sealing material due to hydrolysis caused by the infiltrated water or the effects of impurities contained in the water. There is a risk that deterioration of the above will be promoted.

  Accordingly, the present invention provides a joint structure for a panel that prevents the formation of a gap between the irregular sealing material and the irregular shaped material, thereby preventing the separation of the irregular shaped material and the deterioration of the irregular sealing material. The purpose is to do.

  In order to solve such a problem, the joint structure of the panel according to the present invention includes a groove formed in a concave shape in a connecting portion of two panels, an indeterminate sealing material placed on the bottom side of the groove, A non-hardened sealing material that is uncured and is loaded in a groove so as to cover the surface of the non-uniform sealing material, and is held by the adhesive force of the surface of the non-uniform sealing material, The material is characterized in that a tapered protrusion is provided on the back surface of the shaped material.

  In the joint structure according to the present invention, when the shaped material is pushed into the groove, the shaped material is divided into the shaped sealing member while gradually extruding the excess shaped sealing material in the lateral direction at the protrusion. The back surface of the sheet can be brought into close contact with the amorphous sealing material, and the formation of voids between the amorphous sealing material and the shaped material can be prevented. Moreover, since the bonding area of the shaped material in which the protrusions are formed increases, the shaped material can be stably held. Furthermore, since the projecting portion is tapered, there is an advantage that the shaped material can be easily detached from the amorphous sealing material at the time of repair.

  In the joint structure of the panel described above, a groove is formed on both walls of the groove to make the groove narrow from the middle, a first groove that is closer to the surface than the step in the groove, and a groove The second groove portion is narrower than the first groove portion, the amorphous sealing material is driven into the second groove portion, and the fixed shape material is loaded in the first groove portion. It is preferable. In such a joint structure, by pushing the shaped material into the groove, the excess shaped sealing material goes around the surface of the stepped part or the shaped material side, and the contact surface between the shaped sealing material and the shaped material spreads, and the shaped material The holding power against is improved.

  In addition, the joint structure of the panel according to the present invention includes a groove formed in a concave shape in a connecting portion of two panels, an irregular sealing material placed on the bottom surface side of the groove, and an irregular sealing material. A shaped material that is loaded into the groove while the surface is uncured and is held by the adhesive force of the surface of the irregular sealing material, and the shaped material comprises a back surface side and a side surface or a front surface side of the shaped material. It has the vent hole which connects these.

  In the joint structure according to the present invention, when the shaped material is pushed into the groove, the air between the shaped material and the irregular sealing material is discharged to the external space through the vent hole. It is possible to prevent a gap from being formed between the amorphous sealing material. Moreover, even if air gaps are formed between the irregular sealing material and the shaped material 4 and air remains or moisture enters, the air and moisture block because air gaps communicate with the outside air space. It will not be trapped in the confined space. Therefore, the shaped material is stably held without being detached due to the expansion of air or water.

  Moreover, in the joint structure of the panel according to the present invention, it is preferable to further include a top coat film layer that is overcoated on the surface of the shaped material and the panel after the shaped material is loaded in the groove. According to this joint structure, moisture can be prevented from entering between the irregular shaped sealing material and the shaped material via the gap between the groove and the shaped material, and the shaped material can be held more stably. It is.

  According to the present invention, it is possible to prevent a void from being formed between the irregular sealing material and the regular shape material, and to prevent deterioration due to the detachment of the regular shape material and the intrusion of moisture.

It is a figure which shows an example of the joint structure formed in the connection part (joint) of an adjacent outer wall panel. It is a figure which shows the joint structure in which the coating-film layer was formed in the range from the surface of an outer wall panel to the bottom face of a groove | channel. It is a figure which shows the joint structure by which the irregular-shaped sealing material was laid in the groove | channel. It is a figure which shows the joint structure of the state by which the fixed shape material provided with the protrusion was pushed in the groove | channel. It is a figure which shows the joint structure where the top coat paint was spray-painted with the fixed form material from the surface of an outer wall panel. It is the schematic of the shaped material which shows the other example of a shape of a protrusion. It is the schematic of the shaped material which shows the other example of a shape of a protrusion. It is the schematic of the shaped material which shows the other example of a shape of a protrusion. It is the schematic which shows an example of the shaped material provided with the vent. It is the schematic of the shaped material which shows the other example of a shape of a vent hole. It is a schematic perspective view of the shaped material which shows the other example of a shape of a ventilation hole. It is a figure which shows an example of the joint structure in case the step part is formed in the both walls of a groove | channel.

  Hereinafter, an example of a preferred embodiment of the present invention will be described with reference to the drawings.

  FIGS. 1-7 shows an example at the time of applying the joint structure of the panel concerning this invention to the outer wall panel which comprises the outer wall of a building. The joint structure of the outer wall panel 1 in the present embodiment is such that an irregular sealing material 3 is placed on the bottom surface 2a side of the groove 2 formed in a concave shape at the connecting portion between the outer wall panels 1 and 1, and the irregular sealing material is provided. 3 is a watertight structure in which the shaped material 4 is loaded into the groove 2 while the surface of 3 is uncured.

  The outer wall panel 1 is a plate-like member made of, for example, generally distributed ALC (Autoclaved Light-weight Concrete), and is attached to, for example, an outer peripheral portion of a steel structure building to constitute an outer wall. Other specific examples of the outer wall panel 1 include PCa plate, GRC, extruded cement plate, ceramic siding, metal siding, painted steel plate, metal panel, glass, stone, and the like.

  The edge portion on the surface side of the outer wall panel 1 is notched, and a concave groove 2 is formed in the connecting portion by connecting two outer wall panels 1 (see FIG. 1 and the like). Although not shown in particular, the groove 2 may be formed such that the side surface of the groove 2 is inclined or a stepped step is provided so that the groove 2 becomes narrower as it becomes deeper.

  The amorphous sealing material 3 is placed in the groove 2 and has a watertight structure at the joint (joint) between the outer wall panels 1 (see FIG. 3 and the like). As the amorphous sealing material 3, a wet sealing material generally distributed according to the material of the outer wall panel can be appropriately selected and used. Especially for the outer wall panel made of ALC, it is flexible. A sealing material such as a modified silicone type, an acrylic urethane type, or a polyurethane type, which is rich and hardly breaks the base material when deformed by an external force such as an earthquake, is preferable. Specific examples include silicones, modified silicones, polysulfides, acrylic urethanes, polyurethanes, modified polysulfides, acrylics, SBRs, butyl rubbers, and polyisobutylenes as defined in JIS A 5758: 1997. Etc. The paste-like irregular sealing material 3 is placed in the groove 2 using, for example, a sealing gun, and then the surface 3a is filled with pressure by pressing the surface 3a with a spatula. At the same time, the surface 3a is smooth. Finished.

  The shaped material 4 is used to secure a margin for placing a new shaped sealing material in the groove 2 in advance when the shaped sealing material 3 reaches the end of its useful life. The groove 2 has a width corresponding to the width of 2 and is loaded into the groove 2 so as to be superimposed on the above-described amorphous sealing material 3.

  The shaped material 4 is loaded into the groove 2 until the surface 3a of the above-described amorphous sealing material 3 is cured, and is held by the adhesive force of the surface 3a of the shaped sealing material 3 (see FIG. 4). More specifically, in a state where the amorphous sealing material 3 is uncured and the surface 3a is sticky, the shaped material 4 is formed in the groove 2 so that the surface 3a of the irregular sealing material 3 and the shaped material 4 are in close contact with each other. When the amorphous sealing material 3 is uncured, it is held by the adhesive force due to the stickiness of the amorphous sealing material 3, and is held by the chemical adhesive force as the amorphous sealing material 3 is cured. . In this way, if the fixed shape material 4 is held by using the adhesive force of the irregular shaped sealing material 3, it is not necessary to separately use an adhesive material or the like. The shaped material 4 can be formed of a plastic material or a synthetic rubber material that is generally distributed as a building gasket material, and is thus retained by the adhesive force of the amorphous sealing material 3. Considering this, it is preferable to use vinyl chloride, TPU (thermoplastic polyurethane), natural rubber, or the like that has good adhesion performance with the irregular sealing material 3.

  In the joint structure with such a combination of the irregular shaped sealing material 3 and the shaped material 4, when a certain number of years have passed since the construction of the new building (the useful life of the irregular shaped sealing material 3), Specifically, after removing the irregular sealing material 3 and placing a new irregular sealing material, only the regular material 4 is removed without removing the irregular sealing material 3. It is possible to place a new amorphous sealing material in the gap formed in the groove 2. Considering this point, it is preferable to set the thickness of the shaped material 4 according to the performance (service life) required after the repair. For example, a new amorphous sealing material having the same performance as the irregular sealing material 3 placed in the groove 2 at the beginning of the new construction is placed in the gap at the time of renovation, and the period from the new construction to the first When it is intended to be equal to the period until the repair, it is preferable to ensure the thickness of the shaped material 4 to be approximately equal to the thickness of the shaped sealing material 3. In addition, when it is assumed that an amorphous sealing material with higher performance than the initially placed amorphous sealing material 3 is used at the time of repair, the thickness of the shaped material 4 is reduced according to the degree of performance. You can also.

  Furthermore, the shaped material 4 has higher rigidity than the uncured amorphous sealing material 3, and the projecting portion 4 a having a triangular roof shape, that is, a tapered shape, is formed on the back surface of the shaped material 4 (with the irregular shaped sealing material 3 and (Refer to FIG. 4). When the shaped material 4 having such a protrusion 4a is pushed into the groove 2, the shaped material 4 gradually pushes the excess amorphous sealing material 3 laterally at the protrusion 4a into the irregular shaped sealing 3. Therefore, the back surface of the shaped material 4 is in close contact with the non-uniform sealing material 3 (see FIG. 4).

  The coating film layer 5 is formed of a paint applied from the surface of the outer wall panel 1 to the bottom surface 2 a of the groove 2. The coating material is, for example, a synthetic resin emulsion or a solution type synthetic resin, and the coating range is at least the range from the surface of the outer wall panel 1 to the bottom surface 2a of the groove 2 (the notch surface constituting the groove 2). In the present embodiment, the coating layer 5 is formed by previously applying a paint to the surface of the outer wall panel 1 at a stage before being attached to the building frame, for example, a factory for manufacturing the outer wall panel 1. The coating layer 5 can also be formed by applying paint after attaching 1 to the housing of the building (see FIG. 2 etc.).

  Then, the construction procedure of the joint structure of the outer wall panel 1 is demonstrated below (refer FIG. 1 etc.).

  First, the outer wall panel 1 in which the surface and the bottom surface 2a of the groove 2 are previously coated in the factory and the coating layer 5 is formed is attached so as to be connected to the outer periphery of the building. At this time, the groove | channel 2 is formed in the connection part (joint) between the adjacent outer wall panels 1 (refer FIG. 1).

  Subsequently, a primer is appropriately applied to the surface of the groove 2 on which the amorphous sealing material 3 contacts, and then the amorphous sealing material 3 is driven into the groove 2 using a sealing gun (see FIG. 3). By using and pressurizing, the surface 3a is smoothly finished while the amorphous sealing material 3 is densely placed in the groove 2. At this time, a margin for loading the shaped material 4 is secured on the surface side of the groove 2.

  Next, before the surface 3a of this irregular shaped sealing material 3 is cured, the shaped material 4 is loaded into the groove 2 and held by the adhesive force of the surface 3a of the irregular shaped sealing material 3 (see FIG. 4). Specifically, the operator can bring the shaped material 4 into intimate contact with the surface 3a of the irregular shaped sealing material 3 by the operation of pushing the shaped material 4 into the groove 2 and adhere it by its adhesive force.

  Thereafter, a top coat is simultaneously sprayed on the surfaces of the outer wall panel 1 and the shaped material 4 to form a top coat layer 6 (see FIG. 5).

  As described so far, according to the joint structure of the outer wall panel 1 in the present embodiment, the shaped material 4 is provided with a protrusion or the like in order to hold the shaped material 4 using the adhesive force of the irregular shaped sealing material 3. There is no need to reduce the cost.

  In addition, after placing the irregular sealing material 3, the regular molding material 4 can be loaded immediately, and since the irregular sealing material 3 does not require aesthetic performance, the finishing work can be simplified and the construction period can be simplified. It is possible to reduce the cost and cost.

  Further, by using the shaped material 4 having higher rigidity than the uncured amorphous sealing material 3 and having the tapered projection 4a, the amorphous sealing material 3 is gradually formed at the tip of the projection 4a. The shaped material 4 can be brought into close contact with each other while being pressed separately, and the formation of voids can be effectively suppressed as compared with the case where the entire surface is brought into close contact simultaneously. Accordingly, it is possible to prevent the shaped material 4 from being detached or the amorphous sealing material 3 from being deteriorated due to air confined in the closed space or moisture entering the space. Moreover, since the bonding area of the shaped material 4 on which the projection 4a is formed to the shaped sealing material 3 is increased, the shaped material 4 can be used even when the shaped sealing material 3 with insufficient holding power is uncured. It can be held more stably. Furthermore, since the protrusion 4a is tapered, there is an advantage that the shaped material 4 can be easily detached from the irregular sealing material 3 at the time of repair.

  In addition, the protrusion 4a of the fixed shape material 4 shown in FIG. 4 is only a suitable example. As described above, it is tapered (that is, a shape in which the width dimension decreases toward the tip of the protrusion and the top is located inside both hems), and is easy to remove at the time of refurbishment. As long as the formation of a gap between the fixed sealing material 3 and the fixed shape material 4 can be effectively suppressed, the specific shape and form of the protrusion 4a are not particularly limited. Here, to simply show another example, the protrusion 4a may be formed so that the vicinity of the end (for example, the side continuous with the side surface) protrudes most, not the vicinity of the center of the back surface of the shaped material 4 ( (See FIG. 6). Alternatively, the protrusion 4a is not only formed on the entire back surface of the shaped material 4, but may be formed on the portion with only a part of the back surface as an inclined surface (see FIG. 7). Furthermore, the protrusion 4a may be formed in a curved shape on the entire back surface of the shaped material 4 (see FIG. 8).

  Up to this point, the case where the solid shaped material 4 is used has been described. However, it is also preferable to use the shaped material 4 provided with the vent holes 4b composed of pores or the like. Such a joint structure will be described below (see FIGS. 9 to 11 and the like).

  In the joint structure of the outer wall panel 1 shown in FIG. 9, the shaped material 4 includes a vent hole 4 b that communicates the back side and the front side of the shaped material 4. When such a shaped material 4 is pushed into the groove 2, air between the shaped material 4 and the irregular sealing material 3 is released to the external space via the vent hole 4b. It is possible to prevent a gap from being formed between the sealing member 5 and the amorphous sealing material 5. Further, even if a gap is formed between the irregular sealing material 3 and the shaped material 4 and air remains or moisture enters, the gap and the outside air space communicate with each other. It is not trapped in a closed space. Therefore, the shaped material 4 is stably held without being detached due to the expansion of air or water.

  Here, the vent hole 4b that connects the back surface side and the front surface (surface opposite to the back surface) side of the shaped material 4 is illustrated, but the vent hole 4b communicates with the side surface side of the shaped material 4 in addition to this. It is also possible (see FIG. 10). Moreover, the vent hole 4b may communicate with the small face side of the long shaped material 4 (see FIG. 11). 9 to 11, for the sake of explanation, one or two vent holes 4b are shown in a tube shape with a large diameter, but they may be provided with a large number of vent holes and various surfaces. You may communicate with the side. As a specific example of such a shaped material 4, for example, a porous material obtained by foaming a synthetic resin such as a sponge is formed into a rod shape. In the case of such a shaped material 4, it is not always necessary to have higher rigidity than the uncured amorphous sealing material 3, and the shaped material 4 may be flexibly deformed into a groove shape.

  The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the scope of the present invention.

  In the above-described embodiment, the outer wall panel 1 carried into the construction site in a state where the coating layer 5 is formed in advance is illustrated, but in addition to this, for example, a coating layer formed in advance It is also possible to form a top coat film layer by applying a top coat paint 6 from the surface of the outer wall panel 1 to the surface of the shaped material 4 after loading the shaped material 4 with 5 as only the undercoat paint film layer (see FIG. 5). .

  In the above-described embodiment, the shaped material 4 is held by using the adhesive force of the amorphous sealing material 3. However, depending on the case, the shaped material 4 is temporarily attached by the adhesive force of the amorphous sealing material 3. It is also possible to hold the shaped material 4 more firmly and permanently by another means (for example, the top coat 6) (see FIG. 5).

  Further, in the present embodiment, the case where there is no step on the inner wall of the groove 2 has been described as an example, but the step portions 7 are formed on both walls of the groove 2 so as to narrow the groove 2 from the middle. In this case, the present invention can be applied (see FIG. 12). By such a step portion 7, a first groove portion 21 closer to the surface than the step portion 7 and a second groove portion 22 formed in a portion deeper than the step portion 7 are formed in the groove 2. In this case, as is apparent from the drawing, the second groove portion 22 is formed narrower than the first groove portion 21. An irregular sealing material 3 is placed in the second groove 22, and the regular material 4 is loaded in the first groove 21 (see FIG. 4 and the like). In such a joint structure, by pushing the shaped material 4 into the groove 2, the amorphous sealing material 3 overflowing from the second groove portion 22 to the first groove portion 21 wraps around and contacts the stepped portion 7 and the side surface of the shaped material 4. Since the surface widens, the holding force for the shaped material 4 is improved. Further, when the shaped material 4 is pushed into the groove 2, there is no fear that the shaped material 4 is pushed more than necessary if such a stepped portion 7 is provided.

DESCRIPTION OF SYMBOLS 1 ... Outer wall panel (panel), 2 ... Groove, 2a ... Bottom surface of groove, 3 ... Amorphous sealing material, 3a ... Surface of amorphous sealing material, 4 ... Shaped material, 4a ... Projection, 4b ... Vent hole, 6 ... top coat (top coat layer), 7 ... step, 21 ... first groove, 22 ... second groove

Claims (4)

A groove formed in a concave shape in the connecting portion of the two panels;
An irregular sealing material placed on the bottom side of the groove;
A fixed material that is loaded in the groove so as to cover the surface of the amorphous sealing material while the surface of the amorphous sealing material is uncured, and is held by the adhesive force of the surface of the amorphous sealing material. ,
The shaped material has a rigidity higher than that of the amorphous sealing material, has a width corresponding to the width of the groove, and has both side surfaces in contact with the wall surface of the groove. A joint structure for a panel, characterized in that a portion is provided on the back side of the shaped material. The groove is formed on both walls of the groove to make the groove narrow from the middle, the first groove that is closer to the surface than the step in the groove, and the step in the groove A second groove portion that is narrower than the first groove portion, and the protrusion of the shaped material corresponds to the position of the second groove portion, and the irregular sealing material is Placed in the second groove,
The joint structure of a panel according to claim 1, wherein the shaped material is loaded in the first groove portion. A groove formed in a concave shape in the connecting portion of the two panels;
An irregular sealing material placed on the bottom side of the groove;
A non-cured surface of the amorphous sealing material is loaded into the groove and held by the adhesive force of the surface of the amorphous sealing material.
The shaped material has higher rigidity than the amorphous sealing material, has a width dimension corresponding to the width dimension of the groove, and the entire side surfaces are in contact with the wall surface of the groove , A joint structure for a panel, characterized by having a vent hole that connects the back side and the side or front side.   The panel according to any one of claims 1 to 3, further comprising a top coat layer coated on the surface of the shaped material and the panel after the shaped material is loaded in the groove. Joint structure.

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