JP3164677B2 - Joint gasket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint gasket provided at a joint between a wall material or a wall panel constituting a wall portion of a building and an adjacent wall material or a wall panel.

[0002]

2. Description of the Related Art When a plurality of wall materials or wall panels are arranged and attached to a wall portion of a building, a gap called a joint is formed between the wall material or wall panel and an adjacent wall material or wall panel. If such a joint is left as it is, not only its appearance is ugly, but also rainwater infiltrates from this joint, and the room gets wet. Freeze-expansion causes so-called frost damage, such as widening gaps and crushing wall materials or wall panels.

[0003] Therefore, conventionally, in order to seal such joints for waterproofing and to make the wall portion look beautiful, a joint gasket (hereinafter simply referred to as a gasket) which can be fitted into the joint from the outside after the joint is formed. (See, for example, Japanese Utility Model Laid-Open No. 59-132817).

FIG. 6 shows an example of a general structure of the conventional joint gasket 1. The gasket 1 is obtained as an integral and long product by extruding synthetic rubber having high weather resistance. As shown in the figure, a thick core material 2 inserted into the joint from the tip thereof, and two pairs of front and rear inner seals extending symmetrically and in a diagonally rearward direction from both side surfaces of the core material 2. Pieces (hereinafter referred to as internal fins) 3a, 3a,
3b, 3b, and the rear end of the core 2
A surface seal piece (hereinafter, referred to as a surface fin) 4 having a decorative surface, which is continuously provided in a letter shape, is roughly constituted. And the left inner fins 3a, 3b forming a pair with each other
Is set so that the distance from the end of the inner fins 3a and 3b to the ends of the right inner fins 3a and 3b, that is, the fin width is wider than the joint width (10 to 22 mm).

[0005] In order to apply waterproofing to joints using the gasket 1 having the above-described structure, the gasket 1 is pushed into the joint with the end of the core 2 facing the joint bottom. At this time, as described above, even if the fin width of the internal fins 3a, 3a, 3b, 3b is set to be wider than the joint width,
The inner seal pieces 3a, 3a, 3b, 3b are made of synthetic rubber having high elasticity and flexibility, and are arranged rearwardly oblique to the insertion direction. It is pushed into the joint with it. The inner seal pieces 3a, 3a, 3b, 3b pushed into the narrow joint work elastically in the direction of expanding the fin width and adhere to the joint wall, so that no gap is formed in the joint and waterproofing is ensured.

In the waterproof makeup structure, the surface fin 4 is inserted into the joint or not. When the surface fin 4 is inserted into the joint, a linear decorative surface having a shallow concave cross section is formed between the wall material or wall panel and an adjacent wall material or wall panel.
Is not inserted into the joint, a linear decorative surface having a convex cross-section that covers the joint surface with the surface fins 4 is formed. In recent years, gaskets 1 including surface fins 4 are often inserted into joints, since many consumers prefer a linear decorative surface having a shallow concave cross-section rather than a shadow.

[0007]

However, in the conventional general gasket 1 described above, the surface fin 4 is formed flat, and the gasket 1 is orthogonal to the core material 2 as shown in FIG. Since it is provided, the resilience of the fin at the time of insertion is large, so that the settlement of the surface fin 4 is not stable. That is, if the surface fins 4 are forcibly inserted by hitting them with a jig, as shown in FIG.
As shown in (a) and (b), so-called meandering of the fins occurs such that the surface fins 4 tilt right or left along the longitudinal direction of the joints 5, and the beauty and waterproof performance of the wall are reduced. It will be significantly impaired.

The present invention has been made in view of the above circumstances, and is easily and beautifully inserted into a joint between a wall material or a wall panel and an adjacent wall material or a wall panel, including a surface fin. It is intended to provide a joint gasket that can be used.

[0009]

In order to solve the above-mentioned problems, the invention according to claim 1 is provided by inserting the tip into the joint from the tip.
Core material, and extends from both sides of the core material in a rearward oblique direction,
At least one pair of internal seals to close the joint inside the joint
A piece, provided at the rear end of the core material, and positioned on the surface side of the joint.
Seal pieces that block the joints
Connect the pair of inner seal pieces on the front side on both sides of the core material
Consists of a pair of bridge pieces, wall material or wall panel and adjacent
Joint gas provided at joints between wall materials or wall panels
Wherein at least the surface of the surface sealing piece is
A pair of bridge pieces formed in a concavely curved shape;
Are bent in a U-shape on the core material side.
You.

[0010]

According to the structure of the present invention, since the surface sealing piece is curved in a concave shape, the same effect as that of disposing the internal sealing piece in the rearward oblique direction, that is, the effect of significantly reducing the insertion resistance is obtained. As a result, it becomes easy to insert the surface sealing piece into the joint. Therefore, harmful effects such as entanglement of the end portion of the surface sealing piece and mounting of the surface sealing piece meandering along the length direction of the joint are reduced.

Also, a surface seal piece for closing the joint and one adjacent to the front seal piece are provided.
A pair of inner seal pieces and a pair of bridge pieces on both sides of the core
At the same time, and this pair of bridge pieces
Since it is bent in a V-shape on the side of the core material , the above-described entangling and meandering can be further prevented, and the fitting of the surface seal pieces is extremely stable and good. Therefore, the joint part appearance can be uniformly and beautifully finished, and the waterproof performance is not impaired.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing the structure of a joint gasket according to an embodiment of the present invention, and FIG. 2 is a perspective view of the same. As shown in these figures, the gasket 1a of this example is significantly different from the conventional gasket 1 (FIG. 6) in that the flat fin 4 is replaced by a surface fin 4a having a gentle and concave curved surface. And the surface fins 4a and the second internal fins 3b, 3b are connected by a pair of bridge pieces 6, 6 on both sides of the core material 2. Here, the same components as those in FIG. 6 are denoted by the same reference numerals, and description thereof will be simplified.

First, a front fin 7 slightly extending right and left is provided at the tip of the core material 2. The front fin 7 is for contacting a joint bottom (for example, a stud) to regulate the position of the gasket 1a. Behind the front fin 7, the first internal fins 3a, 3
a, the second internal fins 3b, 3b extend in the rear oblique direction,
In addition, they are provided at a predetermined interval from each other. These first and second internal fins 3a, 3a, 3b, 3b
At a predetermined depth of the joint, the joint is held in close contact with the joint wall.

At the rear end of the core material 2, the above-mentioned surface fin 4a is provided. The surface fin 4a is held in close contact with the joint wall in the vicinity of the joint surface, and is exposed to the surface to make up the joint. As described above, the surface has a gentle and concave curved surface. This is because the ease of insertion into the joint was considered, and the final shape of the surface fin 4a was considered. That is, surface fin 4
This is because, if a is previously formed into a shape close to the final fitting shape from the manufacturing stage of the gasket 1a, the fitting is stable, and the fins can be prevented from winding or meandering. The surface fin 4 a has a laminated structure of a surface layer portion 41 on which a decorative surface is formed and a base portion 42 supporting the surface layer portion 41.

One end of each of the bridge pieces 6, 6 is connected to the right end and the left end of the surface fin 4a (base 42), respectively, and the other end is connected to a pair of left and right second internal fins 3b, 3b.
Are connected to the right end and the left end, respectively. Each of the bridge pieces 6, 6 is bent into a U-shape so that a constricted portion is formed when the two pieces are joined together.

The core member 2, the first and second inner fins 3a,
3a, 3b, 3b, bridge pieces 6, 6, front fin 7, and base 42 are made of, for example, EPDM (ethylene-propylene-
(Diene-terpolymer), which is integrally molded from a synthetic rubber having excellent weather resistance and sealing properties. On the other hand, the surface layer portion 41
Is molded from gray synthetic rubber called CSM (chlorosulfonated polyethylene), which is easy to apply colored paint.
Note that the EPDM and the CSM are joined and joined when extruded from the mold of the molding machine, and eventually all the parts constituting the gasket 1a are integrally extruded and obtained.

In order to mount the gasket 1a having the above-mentioned structure on the joint 5 between the wall panel 8 and the adjacent wall panel 8 as shown in FIG. 3, first, the front fin 7 is inserted into the joint 5. Then, the surface fin 4a is hit with a jig, and the gasket 1a is inserted until the front fin 7 contacts the stud 9. At this time, as shown in FIG. 4, for example, even if an external force F or a moment is applied to rotate the surface fin 4 a clockwise in the drawing, the right and left bridge pieces 6 and 6 prevent the external force F or the moment. Since the forces N and R act, the gasket 1a can be mounted without so-called meandering or fin entanglement as shown in FIG. Further, since the surface fin 4a is curved in the rear oblique direction, the insertion resistance is low and the insertion is easy. Therefore, according to the gasket 1a having the above configuration, the appearance of the joint portion can be uniformly and beautifully finished, and the waterproof performance is not impaired.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. Is also included in the present invention. For example, in the above-described embodiment, the description has been made assuming the outer wall panel. The joints to which the gasket of the present invention is applied are not limited to joints formed in the same wall of a single building unit, but are also joints formed between a building unit and an adjacent building unit, and joints formed in corners. It can be applied to corner joints. Further, in the above-described embodiment, a case where two pairs of internal fins are provided has been described.

[0019]

As described above, according to the structure of the present invention, since the surface sealing piece is concavely curved, the insertion resistance is significantly reduced, and it is easy to insert the joint into the joint. Also, the surface seal piece and a pair of inner seal pieces adjacent to the front seal piece
Are connected by a pair of bridge pieces on both sides of the core material,
Also, this pair of bridge pieces are in the shape of an arrow on the core material side
As a result , the fins can be prevented from being entangled or meandering, and the surface seal pieces can be stably accommodated with good stability. Therefore, the joint part appearance can be uniformly and beautifully finished, and the waterproof performance is not impaired.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a configuration of a joint gasket according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration of the gasket.

FIG. 3 is an explanatory diagram for explaining the operation of the embodiment.

FIG. 4 is an explanatory diagram for explaining the operation of the embodiment.

FIG. 5 is a sectional view showing an example of mounting the gasket.

FIG. 6 is a diagram showing a general configuration example of a conventional gasket.

FIG. 7 is a cross-sectional view showing an example of mounting the gasket.

FIG. 8 is a cross-sectional view illustrating an example of mounting the gasket.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gasket (joint gasket) 2 Core material 3a, 3b Internal fin (internal seal piece) 4a Surface fin (surface seal piece) 5 Joint 6 Bridge piece 8 Wall panel (wall material or wall panel)

Claims (1)

(57) [Claims] 1. A core material inserted into a joint from a tip end,
It extends in the rear oblique direction from both sides of the core material, and inside the joint
At least one pair of internal seal pieces for closing joints, and the core material;
Is provided at the rear end of the joint and closes the joint at the position on the front side of the joint.
Surface seal strip, and a pair of the front seal strip and the front seal strip.
A pair of bridges connecting the seal pieces on both sides of the core
A wall material or wall panel and an adjacent wall material or panel
Joint gasket that is provided at the joint between
At least the surface of the surface sealing piece is curved in a concave shape.
And the pair of bridge pieces are both on the core material side.
Joint joint gusset characterized by being bent in the shape of a letter
Sket.