JP2013117094A - Joint member for synthetic resin-based siding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint member for synthetic resin-based siding, capable of stably suppressing infiltration of rainwater from a joint to the inside of an outer wall even when a synthetic resin-based siding material attached to the outer wall of an architectural structure or the like is contracted due to a temperature difference.SOLUTION: A joint member 1 for the synthetic resin-based siding is installed on a back side of a joint formed between synthetic resin-based siding materials 2 adjacent to each other, and includes a long base plate part 10, and a pair of weir parts 12, 12 formed in a projected line in a longitudinal direction on a surface 10a of the base plate part 10 and closely attached to the synthetic resin-based siding material 2 at distal ends 14, 14.

Description

  The present invention relates to a joint member for synthetic resin siding.

  Various exterior siding materials such as ceramic siding materials, synthetic resin siding materials, and metal siding materials are often attached to the outer walls of buildings and structures. Such siding materials are mass-produced in a specific size, and usually a plurality of siding materials are attached to the outer wall of a building or the like.

Joints are formed between adjacent siding materials attached to the outer wall, and various measures are taken for the joint structure for the purpose of preventing rainwater from entering the joints and improving the appearance.
For example, as shown in FIG. 5, a long protruding portion 112 having a width corresponding to the width of the joint formed by bending a flat plate and flange portions 114 and 114 extending from both side ends of the protruding portion 112 are provided. The flange portions 114 and 114 are located between the synthetic resin siding material 120 (hereinafter simply referred to as “siding material 120”) and the copper edge 132 attached to the pillar 130 of the outer wall. In addition, there is known a joint structure in which the joint member 110 is installed so that the projecting portion 112 is positioned at the joint, and the caulking material 140 is filled on the outdoor side of the projecting portion 112 of the joint member 110 in the joint (for example, Patent Documents). 1). The siding material 120 in this example is provided with ribs 122 for increasing the strength on the back surface.
However, in this joint structure, when the siding material 120 on both sides of the joint contracts due to a temperature difference and the joint width changes, the caulking material 140 peels from the siding material 120 and the caulking material 140 and the siding material 120 are separated. A gap may form in the rainwater, and rainwater may enter inside the outer wall.

Further, as shown in FIG. 6, a synthetic resin siding material 210 (hereinafter simply referred to as “siding material 210”) provided with a support piece 212 formed by folding both side end portions to the back surface side. And the joint member 220 provided with the engagement piece 222 formed by folding both side end portions to the outdoor side, and fixing the flat plate portion 224 of the joint member 220 to the outer wall 230 by screwing, nailing, or the like. A joint structure formed by engaging the engagement piece 222 of the joint material 220 and the support piece 212 of the siding material 210 in a state where the siding material 210 is installed on both sides of the joint material 220 is known. (For example, patent document 2).
However, in this joint structure, when the siding material 210 on both sides of the joint contracts due to a temperature difference, the joint material 220 is excessively forced to cause damage, and rainwater enters from the damaged portion into the outer wall. There are things to do. In addition, this joint structure requires a special structure for the siding material 210, such as providing a support piece 212.

JP 2003-336325 A JP 2003-74169 A

  The present invention is for a synthetic resin siding that can stably suppress the intrusion of rainwater from a joint into the outer wall even when the synthetic resin siding material attached to the outer wall of a building or the like contracts due to a temperature difference. The purpose is to provide joint members.

The synthetic resin siding joint member of the present invention is a synthetic resin siding joint member installed on the back side of a joint formed between adjacent synthetic resin siding materials,
It has a long board | substrate part and a pair of dam part which is formed in a protruding item | line along the longitudinal direction on the surface of the said board | substrate part, and closely_contact | adheres to a synthetic resin siding material in the front-end | tip part.

  The synthetic resin-based siding joint member of the present invention stably prevents rainwater from entering the outer wall from the joint even when the synthetic resin-based siding material attached to the outer wall of a building or the like contracts due to a temperature difference. Can be suppressed.

It is the perspective view which showed an example of the joint member for synthetic resin type | system | group siding of this invention. It is sectional drawing when the joint member for synthetic resin siding of FIG. 1 is cut | disconnected by straight line I-I '. It is the perspective view which showed an example of the synthetic resin siding material. It is sectional drawing when the joint member for synthetic resin siding and the synthetic resin siding material which were attached to the outer wall are cut | disconnected in the horizontal direction. It is sectional drawing when the joint structure of a prior art example is cut | disconnected in a horizontal direction. It is sectional drawing when the joint structure of a prior art example is cut | disconnected in a horizontal direction.

The joint member for synthetic resin siding according to the present invention is a joint member installed on the back side of the joint formed between adjacent synthetic resin siding materials. Hereinafter, an example of the synthetic resin siding joint member of the present invention will be described in detail.
The synthetic resin siding joint member 1 of the present embodiment (hereinafter simply referred to as “joint member 1”) includes a long substrate portion 10 and a surface 10a of the substrate portion 10 as shown in FIGS. Have a pair of weir portions 12 and 12 formed in a ridge along the longitudinal direction. For example, when the synthetic resin siding material is attached to an outer wall of a building or the like, the joint member 1 is attached to the back side of the joint formed along the vertical direction between the synthetic resin siding material and the synthetic resin siding material. .

The board | substrate part 10 is a flat part attached to the attachment surface of outer walls, such as a building, ie, the pillar and copper edge of an outer wall. For example, the joint member 1 can be attached to the outer wall by attaching the substrate portion 10 to the attachment surface of the outer wall by screwing, nailing, or the like.
The material of the substrate part 10 is not particularly limited. For example, a resin such as a metal such as stainless steel or a galvanized steel plate, polyvinyl chloride (PVC), polyethylene, polypropylene, acrylonitrile / butadiene / styrene copolymer (ABS), or polycarbonate. Is mentioned. Among these, the material of the substrate portion 10 is preferably a resin because rust is not easily generated due to the influence of rainwater or the like and is not easily deteriorated, and a hard resin such as hard PVC is more preferable because it is hard and difficult to deform.
Additives such as a filler, a reinforcing material, a pigment, a processing aid, a heat stabilizer, and an ultraviolet absorber may be added to the substrate unit 10 as necessary.

In this example, the substrate portion 10 has a long rectangular shape. The length of the substrate portion 10 may be appropriately selected depending on the mounting surface of the outer wall, the dimensions of the synthetic resin siding material to be mounted on the mounting surface, and the like. For example, in the joint attached to the outer wall of a building, the length of the joint member 1 is preferably 2 to 4 m.
The width | variety of the board | substrate part 10 should just be the width | variety which can be stably attached to the attachment surface of an outer wall, ie, a pillar, or a copper edge, and 20-110 mm is preferable and 70-110 mm is more preferable. As the width of the substrate portion 10 is increased, the width of the joint member 1 can be increased, and the joint can be reduced by lengthening the synthetic resin siding material attached to the outer wall.

  1-5 mm is preferable and, as for the thickness of the board | substrate part 10, 2-5 mm is more preferable. As the substrate portion 10 is thicker, sufficient bending strength and compressive strength are easily obtained. The thinner the substrate 10 is, the easier it is to fasten with screws, nails or the like.

On the surface 10 a of the substrate part 10, a pair of dam parts 12, 12 are formed on the ridges along the longitudinal direction of the substrate part 10. That is, the pair of weir portions 12 and 12 are formed on the surface 10a of the substrate portion 10 so that they have a bowl shape. In addition, when the pair of weir portions 12 and 12 are attached to the outer wall, their tip portions 14 and 14 are in close contact with the synthetic resin siding material.
When the joint member 1 is attached to an outer wall of a building or the like, the joint member 1 is attached so that the joint between the synthetic resin siding materials is positioned between the pair of weir portions 12 and 12. By attaching the joint member 1 in this way, rainwater enters between the weir part 12 and the weir part 12 from the joint. Moreover, since each front-end | tip part 14 and 14 of a pair of dam parts 12 and 12 will be in the state closely_contact | adhered to the synthetic resin siding material, the rain water between the dam parts 12 and 12 and the front-end | tip parts 14 and 14 and synthetic resin siding Since it does not leak from between the materials and flows along the pair of weir portions 12 and 12, rainwater is prevented from entering the inside of the outer wall.

  The pair of dam portions 12, 12 in this example are formed in a straight line parallel to the surface 10 a of the substrate portion 10. However, the dam portion 12 is not limited to a linear shape, and may be formed in a curved shape as long as the effect of the present invention can be exhibited.

  The material of the weir portion 12 is not particularly limited as long as it is within a range that does not impair the effects of the present invention. The dam part 12 of this example has a dam body part 16 rising from the surface 10a of the substrate part 10 and a tip part 14 on the tip side of the dam body part 16, which are made of different materials. In addition, the dam part 12 is not limited to this form.

  The tip portion 14 in this example has a tube shape and is made of a soft material having elasticity. Since the distal end portion 14 is a soft material having elasticity, when the synthetic resin siding material is installed on the distal end portion 14 side of the dam portion 12 of the joint member 1, the distal end portion 14 of the dam portion 12 and the synthetic resin siding The material adheres to each other while deforming the distal end portion 14 of the weir portion 12. Therefore, the close contact between the synthetic resin-based siding material and the tip portion 14 of the dam portion 12 becomes closer. Accordingly, it is more stable that rainwater that has entered between the pair of weir portions 12 and 12 leaks from the joint to the outer wall side of the joint member 1 between the tip portion 14 of the weir portion 12 and the synthetic resin siding material. It is suppressed.

Examples of the soft material having elasticity include soft resins such as styrene, olefin, urethane, polyester, and polyamide elastomer, polyurethane resin, polystyrene resin, polyethylene resin, polypropylene resin, phenol resin, polyvinyl chloride resin, Examples include foam resins such as urea resin, silicone resin, polyimide resin, and melamine resin, and foam resin is preferable.
It should be noted that the synthetic resin siding material and the distal end portion 14 of the dam portion 12 can be sufficiently adhered so that rainwater does not leak from between the distal end portion 14 of the dam portion 12 and the synthetic resin siding material. For example, the material of the tip portion 14 of the weir portion 12 may be other than those described above.

Examples of the material of the dam body portion 16 of the dam portion 12 include the same materials as those described as the material of the substrate portion 10. Among these, a resin is preferable because rust is not easily generated due to the influence of rainwater or the like, and the resin is preferable. A hard resin such as hard PVC is more preferable because it is hard and difficult to deform.
In addition, the dam part 12 may consist of the soft material in which the front-end | tip part 14 and the dam main-body part 16 whole have the said elasticity. Moreover, additives such as a filler, a reinforcing material, a pigment, a processing aid, a heat stabilizer, and an ultraviolet absorber may be blended in the dam portion 12 as necessary.

  The height and width of the dam portion 12 are such that the synthetic resin siding material and the tip 14 of the dam portion 12 are sufficiently adhered so that rainwater does not leak from between the dam portion 12 and the synthetic resin siding material. If it is a range which can be done, it will not specifically limit. The dam portion 12 preferably has a height of about 5 to 30 mm and a width of about 3 to 15 mm.

The distance D between the dam portion 12 and the dam portion 12 formed on the substrate portion 10 is such that when the synthetic resin siding material contracts due to a temperature difference when attached to the outer wall, the joint is more stable and the dam portion 12 and the dam 12 Since it is located between the parts 12, 10 mm or more is preferable and 30 mm or more is more preferable. In addition, the distance D between the weir part 12 and the weir part 12 is preferably 80 mm or less, and more preferably 50 mm or less because the joint width is reduced or water leakage is prevented.
What is necessary is just to set the height of the dam part 12 suitably according to an outer wall structure.

  The method for manufacturing the joint member 1 is not particularly limited. For example, a method in which a molded product in which the substrate portion 10 and the pair of weir portions 12 and 12 are integrated is molded by two-color extrusion molding, injection molding, or the like, After forming a molded product in which the dam body portions 16, 16 in the portion 10 and the pair of dam portions 12, 12 are integrated by extrusion molding, injection molding, etc., the dam body portions 16, 12 of the pair of dam portions 12, 12 For example, a method of adhering or welding the tip portions 14 and 14 to each of the tip ends of the 16 with an adhesive may be used.

The joint member 1 described above is installed, for example, on the back side of the joint formed when the synthetic resin siding material is attached to the outer wall so that the side edges thereof overlap each other, so that rainwater enters the outer wall. Infiltration can be suppressed. Specifically, the joint member 1 is configured such that the back end of the joint between adjacent synthetic resin-based siding materials is positioned between the pair of dam portions 12 and 12 and the tip portion 14 of the dam portion 12 is a synthetic resin-based material. It is attached to the outer wall so as to be in close contact with the siding material from the back side. Thereby, rainwater infiltrates between the weir part 12 and the weir part 12 in the joint member 1 from the joint between the synthetic resin siding materials. And since the synthetic resin siding material is attached so as to be pressed against the distal end portion 14 of the dam portion 12, the distal end portion 14 having the elastic force in the dam portion 12 closely adheres to the back side of the synthetic resin siding material. The rainwater between the weir part 12 and the weir part 12 hardly leaks from between the front end part 14 of the weir part 12 and the synthetic resin siding material, and the intrusion into the outer wall is stably suppressed. Moreover, the joint member 1 can also exhibit the function as a drainage groove. In other words, rainwater that has entered from the joints can flow between the pair of weir portions 12 in the shape of bowls and be drained to the outdoor side of the synthetic resin siding material.
Furthermore, since the joint member 1 is not fixed to the tip portion 14 of the dam portion 12 and the synthetic resin siding material, even if the synthetic resin siding material contracts due to a temperature difference, the dam portion 12 is not easily damaged. The adhesion between the tip 14 of the portion 12 and the synthetic resin siding material can be stably maintained for a long period of time. Therefore, it is possible to stably prevent rainwater from entering the inside of the outer wall through the joint.

  When using the joint member for synthetic resin siding of the present invention, it is particularly effective to install the synthetic resin siding material on the back surface of the joint formed by overlapping the side edges of the synthetic resin siding material. In ceramic siding materials and metal siding materials, if rainwater enters the joints between adjacent side edges, the water easily absorbs from the joints. In ceramic siding materials, freezing and thawing are caused, and in metal siding materials, rusting is likely to occur, and joints are easily damaged. Hereinafter, a joint structure using the joint member 1 described above will be described as an example of a joint structure using the synthetic resin-based siding joint member of the present invention.

FIG. 3 is a perspective view showing a synthetic resin siding material 2 (hereinafter simply referred to as “siding material 2”) used in this embodiment.
As shown in FIG. 3, the siding material 2 includes a synthetic resin substrate 21 and a design layer 22 formed on the surface of the substrate 21. The upper end surface portion 23 extends from the back surface side of the upper end of the substrate 21, and the upper edge 24 extends upward in parallel with the substrate 21 from the end of the upper end surface portion 23 opposite to the substrate 21 side. doing. The upper edge 24 is provided with a plurality of attachment holes (not shown) for attaching the siding material 2 to the attachment surface of the outer wall, and the attachment is performed with the back surface of the upper edge 24 being in contact with the attachment surface of the outer wall. The siding material 2 can be fixed to the mounting surface by screwing, nailing or the like using the holes.

  The upper end surface portion 23 of the siding material 2 is provided with a ridge 25 that protrudes from the upper end surface portion 23 to the side opposite to the substrate 21 side. Further, the substrate 21 has a bent portion 26 that protrudes vertically from the back side near the lower end of the substrate 21 and bends vertically downward in the middle. A groove portion 27 is formed by the bent portion 26 and the substrate 21. The bent portion 26 is formed so that the width and depth of the groove portion 27 are equal to or greater than the width and height of the ridge 25. When the plurality of siding materials 2 are continuously attached to the mounting surface of the outer wall in the up-and-down direction, the groove 27 and the ridges 25 of the other siding materials 2 attached to the lower side thereof are engaged with each other. The siding material 2 is not easily separated.

In the vicinity of the center of the back surface of the substrate 21, a plurality of ridges 28 are provided in parallel along the lateral direction in order to improve the strength of the siding material 2.
Further, the side end sides of the upper end surface portion 23, the upper edge portion 24, the ridge 25, the bent portion 26, and the ridge 28 are not formed up to the respective side edges of the substrate 21. When the joint member 1 and the siding material 2 are attached to the outer wall, the joint member is formed on both side end portions of the substrate 21 where the upper end surface portion 23, the upper side edge portion 24, the ridges 25, the bent portions 26, and the ridges 28 are not formed. 1 is in close contact with the tip 14 of the weir 12.
Further, the side end portions on both sides of the substrate 21 and the design layer 22 are used to partially overlap the side end portions without forming a step on the design surface when mounting a plurality of siding materials 2 side by side. A cutout portion 2a in which a part on the design layer 22 side is cut out and a cutout portion 2b in which a part on the substrate 21 side is cut out are formed.

When attaching the joint member 1 and the siding material 2 to the outer wall of a building or the like, for example, as shown in FIG. 4, the board portion 10 of the joint member 1 is screwed on the copper edge 31 attached to the outer wall. Etc. are attached. Further, the end a on the back side of the joint formed by the notch portion 2a of the siding material 2 and the notch portion 2b of the siding material 2 located adjacent to each other is a pair of dam portions 12 and dam portions 12 in the joint member 1. The siding material 2 is attached to both sides of the joint member 1 so as to be positioned between the two. The substrate 21 of the siding material 2 is pressed against the distal end portion 14 of the dam portion 12 of the joint member 1, and the distal end portion 14 of the dam portion 12 is in close contact with the back side of the substrate 21 while being deformed.
The siding material 2 is usually attached from the bottom to the top of the attachment surface.

The distance between the end a on the back side of the joint formed by the adjacent siding material 2 and the contact portion between the tip 14 of the weir 12 and the siding material 2 in the joint member 1 is preferably 10 to 50 mm. The larger the distance is, the more the siding material 2 contracts due to the temperature difference, and the end a on the back side of the joint is more stably located between the dam part 12 and the dam part 12. It is difficult to leak to the side, and it is possible to more stably suppress rainwater from entering the inside of the outer wall. Further, the smaller the distance, the shorter the notches 2a and 2b of the siding material 2, and the easier the notch processing is.
It is preferable that the end a on the back side of the joint formed by the adjacent siding materials 2 is located in the middle of the pair of weir portions 12 and 12 in the joint member 1 in the width direction.

In this example, the sealing material is not filled in the joint formed between the adjacent siding materials 2. Such a joint structure is advantageous in that the sealing material is not exposed, the appearance is better, and the construction is easy. On the other hand, in this example, since the joint material is not filled with the sealing material, rainwater infiltrates from the end b on the joint side to the end a on the back side. However, since rainwater enters between the pair of weir portions 12 and 12 and the tip portion 14 of the weir portion 12 in the joint member 1 is in close contact with the back side of the siding material 2, rainwater that has entered from the joints. Is difficult to leak out from between the front end portion 14 of the weir portion 12 and the siding material 2 to the outer wall side of the joint member 1, and the infiltration of rainwater into the outer wall is stably suppressed. In addition, rainwater that has entered from the joints can flow between the pair of weir portions 12 and 12 formed in a bowl shape of the joint member 1 and be discharged to the outdoor side of the siding material 2.
Further, even if the siding material 2 contracts due to a temperature difference, the siding material 2 and the tip portion 14 of the dam portion 12 are not fixed, so that the dam portion 12 of the joint member 1 is not easily damaged. The adhesion between the siding material 2 and the siding material 2 is maintained over a long period of time, and the infiltration of rainwater into the outer wall is stably suppressed over a long period of time.

The joint member for synthetic resin siding according to the present invention is not limited to the joint member 1 described above. For example, in the joint member 1, the dam portion 12 rises vertically from the surface 10 a of the substrate portion 10, but the dam portion may rise so as to be inclined with respect to the surface of the substrate portion.
Moreover, the shape of the front-end | tip part of the dam part in a joint member will not be limited to a tube shape, if it is a range which can prevent rainwater from leaking between a front-end | tip part and a synthetic resin siding material. For example, the pair of weir portions of the joint member may be plate-shaped, and the tip portions may be in close contact with the synthetic resin siding material.

DESCRIPTION OF SYMBOLS 1 Joint member for synthetic resin siding 2 Synthetic resin siding material 10 Substrate part 10a Surface of substrate part 12 Weir part 14 Tip part 16 Weir body part

Claims (1)

A synthetic resin siding joint member installed on the back side of the joint formed between adjacent synthetic resin siding materials,
A synthetic resin system comprising: a long substrate portion; and a pair of weir portions that are formed on the surface of the substrate portion along the longitudinal direction and are in close contact with the synthetic resin siding material at the tip portion Joint material for siding.

Images