JPH0972064A - Joint Joiner for Wallboard - Google Patents

Abstract

(57) [Summary] [Purpose] For wallboards that maintains the waterproofness at the separated ends of the wallboards for a long period of time, including the end surfaces of the joining steps, and that can easily treat the joints of the wallboards at the cut-off end surfaces. The purpose is to provide a joint joiner. [Structure] A thin plate-shaped strip-shaped substrate 1 inserted along a joint between a back surface of a wall plate A and a base material B to be joined is parallel to a central strip in the width direction at a joint interval h of the joint. Is fitted into a joint between a base material 3 composed of a pair of ribs 2 and 2 standing upright on the ribs and a band-shaped elastic body 2A, 2A attached to the outer surface of the rib, and the wall plate end surface A ₁ A _1. A pair of ribs 2 and 2 of the base material 3 on the back surface of the band-shaped molded body 4 made of a soft material.
In a joint joiner for a wall plate, which comprises a joint filler 6 provided with a leg portion 5 which is fitted in a snap manner, the strip-shaped elastic bodies 2A, 2A are provided with a pair of ribs 2, 2 upper edges 2B,
2B above, preferably at least higher than the joining step C of the wall plate A and attached.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint joiner for wall boards, and more particularly to a joint joiner for wall boards at a joint portion of wall boards where cut-off end faces are butted and joined.

[0002]

2. Description of the Related Art Conventionally, as a waterproof joint member for a cut-off end surface of an inorganic wall board such as a fiber reinforced cement board, a joint receiving material G having a waterproof fin F abutting against the cut-off end surface of the inorganic wall board as shown in FIG. , A joint filler H fitted to this, a joint receiving member G having an elastic body K as shown in FIG. 7 in place of the waterproof fin F, and a joint filler H fitted to this. Consisting of (for example, Kaikaidaira)
6-34485 and 7-1157) are known.

Among the above, the joint receiving material G having the waterproof fins F is designed to be waterproofed by the fins pressed against the wall plate end face A ₁ by utilizing bending elasticity. Since the contact with the plate end face A ₁ is a line contact of the leading edge of the waterproof fin F, a gap is created if the wall plate end face A ₁ to be connected is not aligned linearly or if the end face A ₁ is uneven. There is a problem that it is difficult to obtain good waterproofness. In the latter case using the elastic body K, the entire side surface of the elastic body is pressed against the end surface A _{1 of the} wall plate, so that the waterproofing performance is remarkably excellent as compared with the former case and is easy to implement.

[0004]

However, since the waterproof joint member using the elastic body K as the joint receiving member cannot fit the joint filler to the waterproof joint member, the height of the joint receiving member cannot be increased so much. The elastic body K is pulled when the wall plate A is fitted as shown on the left side of FIG. 8, or when the wall plate A is fixed with a fixing member such as a screw or nail as shown on the right side of FIG. When the deformation occurs, the upper edge of the elastic body K may be lower than the height of the joining step C provided on the other side of the wall plate A. There was a drawback that rainwater penetrated into the interface of the joint and the waterproof property at the joint step was completely ineffective.

[0005] Further, since the upper edge of the elastic body K were equal to or slightly lower rib L of joint receiving member G, a gap P ₁ P ₂ when fitted joint filler H as shown in FIG. 9 However, there was a drawback that rainwater easily penetrated into this part. Also,
Since the joint filler H must be pressed against the compressive force of the elastic body K, it has a drawback that it requires a considerable pressing force and has poor workability.

[0006]

In view of the above problems, the present invention can maintain the waterproof property at the separated end of the wall plate for a long period of time including the end face of the joining step portion, and the joint of the wall plate at the cut-off end face. The purpose of the present invention is to provide a joint joiner for wallboards that can be easily treated.

[0007]

According to a first aspect of the present invention, there is provided a joint plate joiner for a wall plate, which is a thin plate-shaped substrate which is inserted between a back surface of a wall plate A to be joined and a base material B along a joint portion. 1. A pair of ribs 2 and 2 which are erected parallel to each other in the widthwise central zone with a joint interval h of the joint portion and strip-shaped elastic bodies 2A and 2A attached to the outer side surfaces of the ribs. Base material 3,
On the back surface of the band-shaped molded body 4 made of a soft material that is fitted in the joint between the wall plate end surfaces A ₁ A _1, a leg portion 5 that is snap-fitted between the pair of ribs 2 of the base material 3 is provided. In a joint joiner for wallboards, which comprises the joint filler 6 provided,
The strip-shaped elastic bodies 2A, 2A are characterized in that they are extended and attached to the upper edges 2B, 2B of the pair of ribs 2, 2 and are attached thereto.

According to a second aspect of the present invention, there is provided a wall plate joint joiner as defined in the first aspect.
The height of the strip-shaped elastic bodies 2A, 2A extended above the upper edges 2B, 2B of the pair of ribs 2, 2 is set to be higher than at least the joining step C of the wall plate A. To do.

[0009]

Embodiments of the present invention will be described below. FIG. 1 is a cross-sectional view of an embodiment of the invention described in claim 1, and FIGS. 2 and 3 are cross-sectional views showing the same usage state.

In FIG. 1, a joint space h between the joints is formed in a widthwise central zone of a thin plate-shaped substrate 1 which is inserted along a joint between a back surface of a wall plate A to be joined and a base material B. Between a pair of ribs 2 and 2 standing upright in parallel with each other and strip-shaped elastic bodies 2A and 2A attached to the rib outer surfaces, and the wall plate end surfaces A ₁ A ₁ A wall formed of a joint filler 6 having a pair of ribs 2 of the base member 3 and a leg 5 snap-fitted between the pair of ribs 2 of the base member 3 on the back surface of the band-shaped molded body 4 made of a soft material fitted in the joint. In the plate joint joiner, the strip-shaped elastic bodies 2A, 2A are formed by extending and sticking from the upper edges 2B, 2B of the pair of ribs 2, 2.

The strip-shaped substrate 1 and the pair of ribs 2 and 2 are integrally formed of a synthetic resin or the like to form an elongated body continuous in the paper spine direction in the figure. Further, the elastic bodies 2A, 2A are elongated bodies each having a rectangular cross section and made of a foam having closed cells.
It is adhered to the outer surface of 2 with an adhesive or the like.

When waterproofing the wall plate joint portion with this wall plate joint joiner, as shown in FIG. 2, the ribs 2, 2 are brought into contact with the wall plate end surface A ₁ to compress the elastic body 2A. Position and fix. At this time, since the elastic body 2A is attached so as to extend upward from the upper edge 2B of the rib 2, even if there is a wall plate fitting or a depression when fixing with a screw, a nail or the like, the elastic body 2A The downward deformation is suppressed. Moreover, since the rib 2 is not lined in the upward extending portion of the elastic body 2A, it is not compressed as shown in FIG.

Therefore, as shown in FIG. 3, when the joint filler 6 is pushed in, the non-compressed portion of the elastic body 2A is compressed on the back surface of the band-shaped molded body 4, which is surrounded by the band-shaped molded body 4 and the legs 2A. There are no gaps that can be compressed and filled into the enclosed space to allow rainwater to penetrate. Further, the impact resilience of the elastic body 2A when it is abutted against the wall plate end surface A ₁ is reduced by the amount of extension of the elastic body 2A, so the press-fitting pressure of the joint filler 6 can be reduced by that much, and the construction is also easy.

FIG. 4 is a sectional view of an embodiment of the invention described in claim 2, and FIG. 6 is a sectional view showing the same use state.

In FIG. 4, the joint joiner for wallboard is
A pair of ribs 2 and 2 in the above-described joint joiner for wall plate
The height of the strip-shaped elastic bodies 2A, 2A extended above the upper edges 2B, 2B is at least the step portion C for joining the wall plate A.
It is made up higher.

The adhesive structure between the belt-shaped substrate 1, the material of the pair of ribs 2 and 2 and the elastic body 2A is the same as in the previous embodiment. When waterproofing the wall plate joint portion with this wall plate joint joiner, the wall plate end surface A ₁ is brought into contact with the outer side of the ribs 2 and 2 and the elastic body 2A is compressed and positioned and fixed. . At this time, since the extension height of the elastic body 2A from the rib 2 is higher than that of the joint step C, when the wall plate A is fixed, the end surface of the joint step C is also reliably sealed by the elastic body 2A. It Then, by inserting the joint filler 6 between the ribs 2 and 2, the joint portion is reliably sealed by the elastic body 2A.

[0017]

In the joint joiner for wallboards according to the first aspect of the present invention, since the elastic body filling the joints between the wallboards is extended higher than the ribs, the compressive deformation portion of the elastic body is reduced and the wallboard joint. The butt force can be reduced, and the force for press-fitting the joint filler can be reduced, which facilitates the construction. Further, the extending portion of the elastic body is compressed and deformed when the joint filler is press-fitted, and this portion is filled on the back surface of the joint filler without any gap, so that the waterproof property is also good.

In the joint joiner for wallboards according to the second aspect of the invention, the extension height of the elastic body is made higher than that of the joining step portion of the wallboard, so that the end face of the joining step portion can be more reliably waterproofed.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an embodiment of the invention described in claim 1.

FIG. 2 is a sectional view showing a state of use similarly.

FIG. 3 is a cross-sectional view showing a state of use.

FIG. 4 is a sectional view of an embodiment of the invention described in claim 2.

FIG. 5 is a cross-sectional view showing a usage state of the same.

FIG. 6 is a cross-sectional view of a joint joiner for wallboard of a conventional example.

FIG. 7 is a cross-sectional view of another conventional joint joint for wall plates.

FIG. 8 is an explanatory view of a usage state of another conventional joint joiner for wallboard.

FIG. 9 is an explanatory view of another usage state of the joint joiner for wallboard of another conventional example.

[Explanation of symbols]

1 ... belt-like substrate 2 ... ribs 2A ... elastic body 2B ... rib upper edge 3 ... Base material 4 ... soft strip moldings 5 ... leg 6 ... joint filler A ... wallboard A ₁ ... wallboard end face made of material B ... Base material C ... Step for joining wall plates h ... Gap spacing

Claims (2)

[Claims] 1. A joint gap h between the joints is formed on a central strip in the width direction of a thin plate-shaped substrate 1 which is inserted along the joints between a back surface of a wall plate A and a base material B to be joined. In a joint between a pair of ribs 2 which are erected parallel to each other and a strip-shaped elastic body 2A, 2A adhered to the outer surface of the rib, and a joint between the wall plate end faces A ₁ A ₁ A wall plate made of a joint filler 6 having a pair of ribs 2 of the base material 3 and a leg portion 5 snap-fitted between the pair of ribs 2 of the base material 3 on the back surface of the band-shaped molded body 4 made of a soft material. In the joint joiner, the joint member for wallboards is characterized in that the strip-shaped elastic bodies 2A, 2A are extended and attached upward from the upper edges 2B, 2B of the pair of ribs 2, 2. 2. The joint joiner for wallboards according to claim 1, wherein the height of the strip-shaped elastic bodies 2A, 2A extended above the upper edges 2B, 2B of the pair of ribs 2, 2 is at least the wall. A joint joiner for a wall plate, which is higher than a joining step C of the plate A.