JP4549883B2 - Joint structure with sealing backup material - Google Patents

Description

The present invention relates to a joint structure in which a backup material for supporting a sealing material from the inside of a joint at a corner of an outer wall of a building is arranged .

This will be described with reference to FIGS. Conventionally, in order to support the sealing material 3 from the inside in the joint 2 of the corner 1 of the outer wall 5 of the building B such as a house, a sealing backup material 20 having a rectangular cross section such as foamed polyethylene is inserted and disposed. It has a joint structure . 4 is a base material, 4a is a side surface of the base material, 4b is a corner of the base material, and 4c is an inner surface of the base material.

  However, since the conventional sealing backup material 20 does not have a sufficient sealing function, when the sealing function of the sealing material 3 is lowered due to deterioration over time, the portion leaks and rainwater or the like enters the building B. A problem occurs.

  In addition, since the conventional sealing backup material 20 does not have sufficient flexibility and elasticity, it is necessary to prepare a plurality of types in order to cope with joints 2 of all widths. There is also a problem. In addition, there is a problem that when the joint width varies in the same joint, it cannot be dealt with.

The present invention was devised to solve these problems, and in a joint structure having a sealing backup material inserted to support the sealing material from the inside at the joints of the corners of the outer wall of the building, it is sufficient. It is an object to provide a joint structure that exhibits a secondary water stop function, is excellent in productivity, and can accurately cope with variations in joint width.

A description will be given with reference to FIGS. According to the first aspect of the present invention, the sealing backup material 10 is inserted into the joint 2 formed at the corner 1 of the two outer walls 5 and 5 where the building B intersects to support the sealing material 3 from the inside. A narrow body 12 is suspended from the center of the wide head 11 that receives the sealing material 3, and an arm is formed on the left and right from a substantially middle height portion of the body 12. 13 and 13, a vertical portion 14 a extending from a substantially middle portion of each arm portion 13 and 13 directly downward, and an inclined portion inclined obliquely from the lower end of the vertical portion 14 a toward the lower end portion of the trunk portion 12. 14b and forming the hollow seal portion 15 by the connecting piece 14 and forming the inclined portion 14b inclined obliquely upward and leftward from the vicinity of the lower end portion Q of the narrow body portion 12 in a substantially arrow shape, Two crossing the hollow seal 15 The base materials 4 and 4 are elastically deformed to enter and elastically contact two corners of the base material, and the tips of the arms 13 and 13 are elastically contacted to the inner surfaces of the two base materials and connected. The leg portions 16, 16 laid horizontally on the left and right sides of the piece 14 are elastically brought into contact with two side surfaces of the base material.

In FIG. 1, FIG. 6 and FIG. 7, the invention of claim 2 is for supporting the sealing material 3 from the inside to the joint 2 formed at the corner 1 of the two outer walls 5, 5 intersecting the building B. A joint structure in which a sealing backup material 10 to be inserted is arranged, and narrow body portions 12 and 12 are suspended from substantially left and right end portions of a wide head 11 that receives the sealing material 10, respectively, Arm portions 13, 13 are provided horizontally on the left and right sides of the substantially middle height portion of the two body portions, and a sub-connecting portion 17 is laid between the left and right arm portions 13, 13, and the lower ends of the two body portions 12, 12. The two connecting portions 18 and 12 and the main connecting portion 18 form a hollow seal portion 15, and the central lower end portion of the hollow seal portion 15 is the lowest point P. The left and right sides are inclined obliquely upward and formed in a substantially arrow shape, The hollow seal portion 15 is elastically deformed between the two base materials 4 and 4 crossing each other to elastically contact the two base material corners, and the tip portions of the arm portions 13 and 13 are connected to the two base materials. The foot portions 16, 16 which are elastically contacted with the inner surface and are continuously provided laterally to the left and right of the main connecting portion 18 are elastically contacted with two side surfaces of the base material.

In the sealing backup material 10 according to claim 1, the hollow seal portion 15 is elastically deformed between the two base materials 4 and the tip portion of the arm portion 13 is elastically contacted with the inner surface of the base material 4. Since the hollow seal portion 15 is elastically brought into contact with the corner portion of the base material 4, a sufficient secondary water stop function can be provided. That is, since to secure a seal of the two members of the arm portion 13 and the hollow sealing portion 15, it is possible to exhibit sufficient secondary waterproofing function.

  In particular, since the hollow seal portion 15 is elastically deformed in a crushed state, and its elastic restoring force is applied to the corner portion of the base material 4, the degree of adhesion between the two is strong, and therefore an excellent secondary water stop function is achieved. Demonstrate.

  Thereby, for example, even if the sealing material 3 loses its sealing function due to deterioration over time, the high secondary water stop function of the sealing backup material 10 reliably prevents water leakage, and rainwater or the like enters the building B. Can be prevented beforehand.

In addition, since the hollow seal portion 15 is elastically deformed to enter between the two base materials 4 , 4 , it can correspond to joints 2 of any width, and other types are prepared as in the past. There is no need. Therefore, it is excellent in productivity.

  Furthermore, even if the joint width varies in the same joint, since the hollow seal portion 15 is freely elastically deformed accordingly, the secondary water stop function can be maintained well.

Further, since the connecting piece 14 of the sealing backup material 10 is inclined obliquely upward and left and right and formed in a substantially arrow shape, the frictional resistance when the sealing backup material 10 is inserted between the two base materials 4 and 4 is reduced. And can be inserted smoothly.

Furthermore, the sealing backup material 10, in addition to the arm portion 13 and the hollow sealing portion 15, which is elastically contacted the foot 16 on the side surface of the base material 4, so to ensure the sealability of three members, the secondary stop Water function can be further enhanced.

The joint structure in which the sealing backup material according to claim 2 is arranged, as with the invention according to claim 1, exhibits an excellent secondary water stop function, exhibits high productivity, and further has a joint width. It is possible to accurately cope with variations in

Further, since the connecting piece 14 of the sealing backup material 10 is inclined substantially upward and downward and formed in a substantially arrow shape, the frictional resistance when the sealing backup material 10 is inserted between the two base materials 4 and 4 is reduced. It can be kept small and can be inserted smoothly.

Further, since the sub-connecting portion 17 is installed between the left and right arm portions 13 and 13 of the sealing backup material 10 , the elastic contact force of the arm portion 13 with respect to the base material 4 can be increased.

Furthermore, the sealing backup material 10, in addition to the arm portion 13 and the hollow seal portion 15, the foot portion 16 and is elastic contact the side surface of the base material 4, so to ensure the sealability of three members, secondary The water stop function can be further enhanced.

  A first embodiment of a sealing backup material 10 according to the present invention is shown in FIG. 1, FIG. 4 and FIG. This is a sealing backup material 10 that is inserted in a joint 2 formed in the corner 1 of the outer wall 5 of the house to support the wet sealing material 3 from the inside. As its configuration, a narrow body 12 is suspended from the center of a wide head 11 that receives the sealing material 3, and an arm 13 is horizontally disposed from a substantially middle height of the body 12 in the left-right direction. Yes.

  Further, a connecting piece 14 is constructed from a substantially middle portion of each arm portion 13 to a lower end portion of the body portion 12, and the body portion 12, the arm portion 13, and the connecting piece 14 form a hollow seal portion 15. The connecting piece 14 in the present embodiment is formed by a vertical portion 14a extending from the arm portion 13 in a downward direction and an inclined portion 14b inclined obliquely from the lower end of the vertical portion 14a toward the lower end portion of the trunk portion 12. Thus, a sufficiently large hollow portion is formed, and a strong elastic contact force with the base material 4 is ensured.

  Further, by this, the lower end portion of the hollow seal portion 15, the center portion thereof is continuous with the lowest point portion P, and the connecting piece 14 is continuous with the foot portion 16 in the laterally outward direction. And since the sealing performance is ensured by the three members of the arm part 13, the hollow seal part and the foot part 16, it has a feature that a higher secondary water stop function can be exhibited.

  A second embodiment of the sealing backup material 10 according to the present invention is shown in FIG. 1, FIG. 6, and FIG. This is also inserted in the joint 2 formed at the corner 1 in the outer wall 5 of the house to support the sealing material 3 from the inside. The configuration is such that a narrow body 12 is suspended from each of the left and right ends of the wide head 11 that receives the sealing material 3, and the sub-connecting portion 17 is provided at a substantially intermediate height between the two bodies 12. The arm portion 13 is horizontally provided in the left-right outer direction continuously to the sub-connecting portion 17. Further, the lower end portions of the two torso parts 12 are erected by the main connecting part 18, and the foot part 16 is provided laterally in a laterally outward direction continuously to the main connecting part 18, and is connected to the two torso parts 12. The portion 17 and the main coupling portion 18 form a hollow seal portion 15.

Then, the hollow seal portion 15, infested by elastic deformation between the two base material 4, is elastically contacted the tip of the arm portion 13 on the inner surface of the base material 4, the hollow sealing portion 15 of the base member 4 is resilient contact the corner, furthermore, it is made to elastic contact foot portion 16 on the side surface of the base member 4.

  The sealing backup material 10 exhibits an excellent secondary water stop function and productivity as in the first embodiment. In particular, since the sealing performance is ensured by the three members of the arm portion 13, the hollow seal portion 15 and the foot portion 16, it has a feature that a higher secondary water stop function can be exhibited.

  Also in the sealing backup material 10, the main connecting portion 18 is bent so that the central portion thereof becomes the lowest point portion P, and the left and right sides thereof are inclined obliquely upward. Thereby, the frictional resistance at the time of inserting the sealing backup material 10 between the two base materials 4 can be suppressed, and the insertion into the portion is facilitated.

  The sealing backup material 10 in the present invention can be used not only for supporting the wet sealing material 3 but also for supporting the dry sealing material 3.

  In the sealing backup material of the present invention, the body portion is formed of a hard material having a Shore D hardness of 35 degrees to 53 degrees, and the other portions are formed of a soft material having a duro A hardness of 65 degrees to 70 degrees. Thereby, while improving the workability | insertion work to a joint, the favorable water stop function is ensured. The molding material for the sealing backup material is not particularly limited, but a thermoplastic olefin resin (TPO) is preferable.

It is a schematic perspective view which shows the building which has an entrance corner part. It is a longitudinal cross-sectional view which shows the sealing backup material which concerns on a prior art example. It is sectional drawing which shows the state which inserted the sealing backup material shown in FIG. 2 in the joint. It is a longitudinal section showing a first embodiment of a sealing backup material according to the present invention. It is sectional drawing which shows the state which inserted the sealing backup material shown in FIG. 4 in the joint. It is a longitudinal cross-sectional view which shows 2nd embodiment of the sealing backup material which concerns on this invention. It is sectional drawing which shows the state which inserted the sealing backup material shown in FIG. 6 in the joint.

DESCRIPTION OF SYMBOLS 1 Corner part 2 Joint 3 Sealing material 4 Base material
4a side
4b Corner
4c Inner surface 5 Outer wall 10 Sealing backup material 11 Head 12 Body 13 Arm portion 14 Connection piece 14a Vertical portion 14b Inclined portion 15 Hollow seal portion 16 Foot portion 17 Sub-connection portion 18 Main connection portion 20 Sealing backup material B Building P Bottom Point Q Lower end

Claims (2)

Sealing backup material inserted to support the sealing material (3) from the inside in the joint (2) formed in the corner (1) of the two outer walls (5 , 5 ) intersecting the building (B) (10) is a joint structure in which a narrow body (12) is suspended from the center of a wide head (11) that receives the sealing material, and a substantially intermediate height portion of the body from then laterally disposed arms (13, 13) to the left and right, from approximately the middle portion of each arm portion, a vertical portion extending beneath a direction (14a) and the direction selfish diagonally to the lower end of the body portion from the lower end of the vertical portion The hollow seal portion (15) is formed by the connecting piece (14) formed with the inclined portion (14b) which is inclined, and is inclined obliquely upward and leftward from the vicinity of the lower end (Q) of the narrow body portion. The inclined part is formed in an approximately arrow shape, and the hollow seal part is intersected with two The base material (4 , 4 ) is elastically deformed to enter and elastically contact two corners of the base material , the tip of the arm is elastically contacted to the inner surface of the two base materials, and the connecting piece A joint structure in which a sealing back-up material is provided in which the foot portions (16, 16) horizontally disposed on the left and right are elastically contacted with two base material side surfaces . Sealing backup material inserted to support the sealing material (3) from the inside in the joint (2) formed in the corner (1) of the two outer walls (5 , 5 ) intersecting the building (B) (10) is a joint structure in which narrow body portions (12 , 12 ) are respectively suspended from substantially left and right end portions of a wide head portion (11) for receiving the sealing material, Arm portions (13 , 13 ) are provided laterally at a substantially intermediate height portion of the body portion, and a sub-connecting portion (17) is provided between the left and right arm portions, so that the two body portions (12, 12) are provided. The lower end portions are installed at the main connecting portion (18), and the two body portions and the main connecting portion (18) form a hollow seal portion (15), and the lower end portion at the center of the hollow seal portion (15) the left and right side is formed obliquely upward to form substantially an inclined arrow as nadir portion (P), wherein Two base material crossing the air seal portion (4, 4) is elastically contacted to the two underlying material corner is advanced by elastic deformation between the elastic-tip portion of the arm portion to the two underlying material inner surface A joint structure in which a sealing back-up material is arranged in which the foot portions (16, 16) that are in contact with each other and are continuously provided on the left and right sides of the main connecting portion are elastically contacted with two side surfaces of the base material .

Images