JP4817880B2 - Drainage structure of the seal structure of the exterior wall joint - Google Patents

Description

  The present invention relates to a drainage channel having a sealing structure for joints on the outer wall of a building and a drainage channel forming method thereof.

  First, the seal structure of the building outer wall joint will be described with reference to FIG. 4. 1 is a surface material stretched on the outer surface of the building, and 3a and 3b are respectively stretched on the vertical joint and the horizontal joint that intersect each other, that is, on the outer surface of the building. It is a gap in the vertical direction and horizontal direction of the face material 1, and looks like a lattice from the front side. Reference numeral 104 denotes a gasket fitted to the vertical joint 3a, which is connected to the columnar portion 104a extending from the back of the joint 3a toward the front, and to the front end of the columnar portion 104a, extending to the left and right sides, and the joint 3a left and right A surface lip 104b that elastically contacts the side surfaces (face materials 1 and 1), and an inner lip 104c and a rear lip 104d that extend in the left and right sides and elastically contact the joint right and left side surfaces are coupled to the columnar portion 104a. ing.

  On the other hand, 105 is an irregular sealing agent injected and filled in the horizontal joint 3b, and the gasket 104 is divided by the horizontal joint 3b. However, the irregular sealing agent 105 has both joints 3a, 3a, It continues in the horizontal direction including the intersection of 3b. The vertical joint 3 a is sealed in a watertight manner by elastic contact with the side surfaces of the lips 104 b, 104 c, 104 d, and the horizontal joint 3 b is filled in with an irregular sealing agent 105.

  However, since the irregular sealing agent 105 closes the upper and lower ends of the gasket 104, when the water enters the vertical joint 3a beyond the surface lip 104b, the water is not discharged but collected, thereby There is a problem that the material is damaged, and the water leaks indoors. Moreover, in the winter season, the accumulated water freezes and expands, and the face material 1 is damaged by the pressure. Also, those skilled in the art can easily come up with the installation of drainage channels and drainage outlets, but the current situation is that they have not yet reached a satisfactory idea due to the accompanying deterioration in appearance, man-hours and costs. is there.

In addition, the proposal (for example, patent document 1, 2) is made about the draining member which prevents the permeation of the water into the building from a horizontal joint. Although not explained in these patent documents, it is assumed that water flowing down the gasket in the vertical joint is discharged to the outside through this draining member. However, this draining member has a problem that it has a large number of parts at first glance, is complicated, and is difficult to assemble. There are also design restrictions on the buildings used.
JP-A-8-105125 Japanese Patent No. 3716290

  In view of the above, the present invention is to provide a drainage structure having a seal structure for joints on the outer wall of a building that is easy to construct and has a high drainage effect in order to eliminate the drawbacks of the prior art described above.

In order to achieve the above object, the drainage structure of the seal structure of the exterior wall joint of the invention of claim 1 intersects with the exterior wall of the building and is formed in a lattice shape, and a gasket is fitted to the vertical joint, A horizontal joint is filled with an irregular sealing agent, and a gasket fitted to the vertical joint is coupled to a columnar portion extending from the back of the joint toward the front and an end on the front side of the columnar portion. In the drainage structure of the seal structure of the outer wall of the building having a surface lip that extends to the left and right sides and elastically contacts the left and right sides of the joint, the irregular sealing agent is at least the lower end of the gasket in the vertical direction. enter the portion, and the water containing in the gasket to be discharged to the outside, at least a portion of the lateral width of the surface lip of the gasket lower end, all of the vertical length Stood characterized in that it is constituted by only is spaced apart from the sealing agent.

According to the first aspect of the present invention, since the drainage channel extending in the vertical direction is provided at the lower end portion of each gacket of the seal structure of the building outer wall joint, water enters the vertical joint through the surface lip. However, the water is discharged by its own weight from the lower end opening of the drainage channel to the outside and does not collect inside, so that the face material and the base material are damaged by it, and further, the water leaks to the indoor. There is nothing to do. Of course, there is no conventional problem caused by freezing and expansion of water accumulated in winter. In addition, the drainage channel has at least part of the right and left width direction of the front surface of the gasket of the irregular sealing agent separated from the rear surface of the surface lip over the entire vertical length of the part. Therefore, it is not necessary or necessary to add a gasket for the purpose of forming the gasket. In addition, since the irregular sealing agent has plasticity at the time of filling, the separation of a part of the front side surface from the rear side surface of the surface lip is, for example, a very simple mold insertion or the like. Prior to filling the directional joint with the irregular sealant, a bond breaker having a very simple shape is attached to a predetermined portion of the surface lip of the gasket, and after filling the horizontal joint with the irregular sealant, the bond breaker Can be easily obtained by an extremely simple operation of extracting from the space between the surface lip and the irregular sealing agent, and there is almost no increase in man-hours and costs. Further, for example, the drainage port that impairs the appearance of the building is not exposed on the front side surface of the gasket, and the appearance is good. In addition, since a part of the irregular sealing agent enters at least the lower end of the upper and lower ends of the gasket, water can be prevented from entering the building through the drainage passage of the gasket.

  The drainage channel of the seal structure of the building outer wall joint relating to the best mode for carrying out the present invention will be described with reference to FIGS. First, the seal structure will be described. 1 is a surface material stretched on the outer surface of the building, 3a and 3b are vertical joints and horizontal joints that intersect each other, that is, the vertical direction of the surface material 1 stretched on the outer surface of the building. It is a horizontal gap and looks like a grid from the front side.

  Reference numeral 4 denotes a gasket fitted to the vertical joint 3a, which is connected to the columnar portion 4a extending from the back of the joint 3a toward the front, and to the front side end of the columnar portion 4a, and extends to both the left and right sides. A surface lip 4b that elastically contacts the side surfaces (face materials 1 and 1), an inner lip 4c and a rear lip 4d that extend to the left and right sides and elastically contact the left and right side surfaces of the joint 3a, respectively. Are combined. In addition, although a code | symbol is abbreviate | omitted, the bridge | bridging is respectively provided for reinforcement on the right and left between the surface lip 4b and the intermediate | middle lip 4c.

  The gasket 4 will be described in more detail. As shown in FIGS. 1 (a) and 2 (b), the lower end portion of the gasket 4 has a surface lip 4b cut off at the upper side of the horizontal joint 3b, and the columnar portion 4a and the intermediate portion 4b. The lip 4c is cut off at a position slightly higher than the upper side of the horizontal joint 3b, and the back lip 4d extends to the lower side of the horizontal joint 3b. Although the reason will be described later, except for the reason, all of them may be flush with the upper side of the horizontal joint 3b as in the conventional example.

  Finally, 5 is an amorphous sealing agent injected and filled in the horizontal joint 3b, and the gasket 4 is divided for each horizontal joint 3b, whereas the intersection of both joints 3a and 3b. A part 5a of the gasket 4 also enters the vertical end (vertical joint 3a) of the gasket 4. With the above configuration, the lips 4b, 4c, 4d are elastically contacted with the side surfaces of the vertical joint 3a, and the horizontal joint 3b is filled with the irregular sealing agent 5, so that both joints 3a, 3b are watertight. Sealed.

  Here, the drainage channel 5b which is the main body of the drainage structure of the present invention will be described. The surface seal lip 4b of the gasket 5 at the portion 5a of the irregular sealing agent 5 that has entered the lower end of the gasket 4 (vertical joint 3a). At least part of the width in the left-right direction (the left and right end portions in the figure) of the front side surface (opposite to the back surface of the gasket) is recessed over the entire length in the vertical direction, and the back side surface of the surface lip 4b of the gasket 4 It is comprised only by leaving | separating from.

  The operation will be described. Since the drainage channel 5b extending in the vertical direction is provided at the lower end portion of each gasket 4, even if water enters the gasket 4 beyond the surface lip 4b, the water remains in the gasket 4. Is lowered by its own weight, is discharged to the outside from the lower end opening of the drainage channel 5b, and does not collect in the interior, so that the face material 1 is damaged by it or further develops into water leakage to the inside. There is no. Of course, there is no conventional problem caused by freezing and expansion of water accumulated in winter.

  In addition, the drainage channel 5b has at least part of the width in the left-right direction of the front side surface of the portion 5a that has entered the gasket 4 lower end of the amorphous sealing agent 5 over the entire length in the vertical direction. Since it is formed only by being separated from the surface on the back side of the front surface lip 4b, the additional work of the gasket 4 for the purpose of forming the surface lip 4b is not necessary or almost unnecessary except for the notch at the lower end. In addition, since the amorphous sealing agent 5 has plasticity when filled, the separation of the part of the front side surface of the amorphous sealing agent 5 from the back side surface of the surface lip 4b of the gasket 4 is as described below. For example, it can be easily performed by inserting a very simple mold, and there is almost no increase in man-hours and costs. Further, for example, the drain outlet that impairs the appearance of the building is not exposed on the front surface of the gasket, and it looks good.

  Note that, as described above, extending the back lip 4d at the lower end of the gasket 4 to the lower side of the horizontal joint 3b is a wasteful use for unnecessary portions at the back of the vertical joint 3a of the amorphous sealing agent 5. While preventing filling, the part 5a makes remarkably easy to fill the end portion (vertical joint 3a) of the gasket 4. Further, notching the columnar portion 4a and the intermediate lip 4c excluding the surface lip 4b slightly increases the cost compared to simply cutting the gasket 4 flush with the non-uniform sealing agent 5. The resistance of filling (pushing) into the gasket 4 is reduced, the filling and formation of the drainage channel 5b are facilitated, and the lifting of the end of the gasket 4 with respect to the outer surface of the face material 1 is prevented.

  Here, the method of forming the drainage channel 5b will be described. As shown in FIG. 2, prior to filling the irregular sealing agent 5 into the horizontal joint 3b, the lower end of the surface lip 4b of the gasket 4 is formed. At least a part of the width in the left-right direction of the end portion and the surface on the back side of the front surface lip 4b (the left and right ends in the figure), and a length exceeding the length in the vertical direction that the amorphous sealing agent 5 is estimated to enter Then, a film or sheet-like bond breaker (release paper or the like) 6 that can be easily separated from the surface lip 4b and does not adhere to the irregular sealing agent 5 is attached. Next, the gasket 4 to which the bond breaker 6 is attached is fitted to the vertical joint 3a.

  The bond breaker 6 will be described in more detail. It is a rectangle (strip shape) that is long in one direction, and a part (half in the drawing) in the longitudinal direction is superimposed on the surface on the back side of the lower end of the surface lip 4b. The remaining portion is bent to the front side and attached to the front side surface of the surface lip 4b so as to overlap. The vertical length of the portion of the bond breaker 6 that overlaps the surface on the back side of the front surface lip 4b exceeds the estimated vertical length when the above-mentioned amorphous sealing agent 5 enters. Although necessary, the length of the portion to be superimposed on the front side may be the same or shorter. In FIG. 2, each bond breaker 6 has its left or right end protruding beyond the left or right tip (edge) of the surface lip 4 b, but the protrusion is indispensable. is not.

  Next, after filling the horizontal joint 3b with the irregular sealing agent 5 and curing, the portion of each bond breaker 6 superimposed on the surface on the front side of the surface lip 4b is peeled forward, and the peeled portion, or When the left and right protruding parts are picked and pulled out by hand, the left and right edges of the surface lip 4b elastically contact the side surface of the vertical joint 3a, and the trace of the extracted bond breaker 6 corresponds to its thickness. In addition, a pair of left and right vertical drainage channels 5b are formed to communicate the gap between the surface lip 4b and the intermediate lip 4c in the gacket 4 and the outside below.

  Another example of the bond breaker 6 will be described with reference to FIG. 3. The width in the left-right direction is larger than that of the above-mentioned one (twice that in the figure), and the length in the vertical direction is substantially the same rectangle as that described above. Then, a part of the length in the vertical direction is overlapped with the surface on the back side at the center in the width direction of the lower end portion of the surface lip 4b, and it is slightly extended in the vertical direction as it is. The remaining portion is bent to the front side (in a state where it protrudes from the lower end edge of 4b), overlapped and attached to the front side surface of the surface lip 4b. The length of the portion of the bond breaker 6 that overlaps the front side of the surface lip 4b may be the same as or shorter than the portion that overlaps the back side.

Next, after filling the horizontal joint 3b with the irregular sealing agent 5, the portion of each bond breaker 6 overlapped with the surface on the front side of the surface lip 4b is peeled off in the vertical direction. And pulling it out and pulling it out, the left and right edges of the surface lip 4b elastically contact the vertical joint 3a, the trace of the extracted bond breaker 6 corresponds to its thickness, and the gap in the gacket 4 One vertical drainage channel 5b communicating with the outside below is formed.
The effects of the bond breaker 6 will be described above. As described above, the extremely simple and inexpensive bond breaker 6 and the drainage channel 5b exhibiting the above-described effects can be obtained by a very simple operation of attaching and removing the mold. Obviously, it can be easily formed.

The drainage channel | path of the seal structure of the building outer wall joint of this invention is each shown, (a) is a longitudinal cross-sectional view, (b) is the AA sectional drawing. FIG. 3A is a front view showing a part of a method for forming a drainage channel with a seal structure of a joint wall of a building according to the present invention, and FIG. It is a perspective view in the state where a bond breaker was attached to another position of the gasket. The seal structure of the conventional building outer wall joint is shown, (a) is a front view, (b) is a BB cross-sectional view, respectively.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Face material 3a Vertical direction joint 3b Horizontal direction joint 4 Gasket 4a Columnar part 4b Surface lip 4c Middle lip 4d Back lip 5 Indeterminate sealant 5a Intruded part 5b Drainage channel 6 Bond breaker 104 Gasket 104a Columnar part 104b Surface lip 104c Middle Lip 104d Back lip 105 Amorphous sealant

Claims (1)

Gaskets that intersect with each other on the outer wall of the building and are formed in a lattice shape. The gaskets are fitted to the vertical joints, the horizontal joints are filled with an irregular sealing agent, and the gaskets are fitted to the vertical joints. Is connected to the front end of the columnar part from the back of the joint and the front end of the columnar part. In the drainage structure,
The non-circular sealing agent partially enters at least the lower end of the upper and lower ends of the gasket, and the water that has entered the gasket can be discharged to the outside in the left-right direction of the surface lip at the lower end of the gasket. A drainage structure for a building outer wall joint seal, wherein at least a part of the width is formed only by being spaced apart from the sealing agent over the entire length in the vertical direction.

Images