JPH09242203A - Gasket structure for joint seal between panels and sealing method of joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify fitting work of panels and improve waterproofing performance at the time of sealing a joint between the panels by a dry method. SOLUTION: A panel 1 is constituted of a backing material 2 and an external wall material 3, and one side surface of a secondary gasket 4 formed of a secular expansion member is fastened on a peripheral surface of the backing material 2 by previously making it in a contracted state. Thereafter, the panel 1 is constituted to be fitted by inserting a primary gasket 6 on an insertion end part of which a protruded streak 6b is formed between the external wall materials 3 after setting the panel 1 on a frame, and the primary gasket 6 is stopped falling by sandwiching the protruded streak 6b of the primary gasket 6 by the adjacent secondary gaskets 4 secularly expanding after fitting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field of a gasket structure for sealing joints between panels such as outer wall panels and a joint sealing method.

[0002]

2. Description of the Related Art Generally, when building a panel of this type, it is necessary to seal joints between adjacent panels. When making such a seal, there is a wet method of filling a viscous sealing material (caulking material) such as putty. However, the wet method inevitably has poor workability, and depending on the skill level, the finish may be good or bad. There is a problem that is attached. Therefore, conventionally, as shown in FIG.
A panel 9 in which a secondary gasket 8 is previously fixed to the base material 2.
A dry-type sealing method has been proposed in which the primary gasket 10 is inserted between the adjacent outer wall materials 3 after sequentially building the.

[0003]

However, in the case of the dry type, a gap may be formed between the opposing secondary gaskets 8 or the panel 9 shown in FIG.
As shown in the set state, the secondary gaskets 8 interfere with each other and overlap each other in the front and back, so that they do not abut against each other, resulting in impaired watertightness and careless removal of the primary gasket 10. However, there is a problem that the present invention tries to solve it.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances in order to solve these problems, and comprises a base portion on the back surface side and an outer wall portion on the front surface side. A joint structure for sealing joints between panels, wherein joints between adjacent panels have a primary gasket inserted between adjacent outer wall portions in a pressing manner and a joint between the base portions. The primary gasket is sealed with a secondary gasket, and the primary gasket is formed with a lip piece that is press-fitted on the outer peripheral surface of the outer wall portion while being elastically deformed,
In addition, it is assumed that the insertion tip is formed with a ridge extending to the position of the base portion, and the secondary gasket is fixed to the peripheral surface of the base portion having one side facing each other, and expands with time from the contracted state to expand the space between the opposing surfaces. It is formed of a time-expanding member that seals and seals, and at the same time holds the ridge of the primary gasket. As a result, the primary gasket can be reliably prevented from coming off, and the primary gasket can have excellent sealing properties.

Further, according to the present invention, the joint between the panels formed by the back surface side base portion and the front surface side outer wall portion is sealed between the outer wall portions by the primary gasket and the secondary gasket by which the base portion is sealed. When sealing using the and, the secondary gasket shall be formed from a time-expansion member that expands with time from the contracted state, and the panel in which the contracted secondary gasket is fixed in advance to the peripheral surface of the base part is required. After setting so that there is a gap between the joints, insert the primary gasket with the ridge extending at the tip into the joint from the panel surface side to the joint so that the ridge reaches the base position, and then ,
The secondary gasket expands with time, and the secondary gaskets are sealed together, and the protrusions of the primary gasket are clamped to prevent the secondary gasket from coming off. As a result, the construction of the panel on the frame is simplified, and the workability can be improved.

The time-expansion member employed in the present invention is preferably one that expands in a one-dimensional direction (thickness direction). In that case, the fixing surface to the base portion is on the side orthogonal to the expansion direction. It becomes the surface of. As such a time-dependent expansion member, a soft foam having a high closed cell rate, rubber elasticity and a shape restoring force (recovery force) is suitable. ) Has the property of allowing gas (carbon dioxide, oxygen, nitrogen, air, etc.) molecules to flow in and out over time. After molding, the foam is compressed in one direction without destroying the cells, etc. It is possible to adopt a plate-shaped contracted cell with a gas removed from it, and this property is used to expand by taking in outside air into the cell over time due to its shape restoring force. It is a thing. The time required for expansion may be a time unit such as a few hours or a day unit such as a few days. The point is to maintain a contracted state (a little expansion does not matter) until the installation is completed. Anything will do. Specifically, as such a flexible foam, a flexible foam such as a flexible polyethylene foam, a flexible polyurethane foam, a flexible polyvinyl chloride foam can be appropriately adopted.

[0007]

FIG. 1 shows an embodiment of the present invention.
It will be described based on. In the drawings, reference numeral 1 denotes a panel to be built as an outer wall of a building, the panel 1 being a flat plate-like base material 2 to be incorporated on the side of a skeleton, and the outer peripheral shape of the base material 2 on the surface of the base material 2. It is formed of an outer wall material 3 that is fixed in a laminated manner in a state of being set slightly larger in a step shape, and one side surface of the secondary gasket 4 is fixed to each peripheral surface of the base material 2. The gasket 4 is made of the above-described time-expansion member that gradually expands with the passage of time. Here, the gasket 4 is made of polyethylene foam having a high closed cell rate (for example, a closed cell rate of about 80%) and an elastic restoring force. What is formed is a plate which is compressed in a one-dimensional direction (thickness direction) so that cell destruction does not occur and the cell is degassed to shrink into a plate shape.
Here, the secondary gasket 4 is not a rectangular shape but a concave groove shape, has an abutting portion 4a and a concave groove portion 4b on the front and back sides of the panel, and the surface of the abutting portion 4a is expanded. In the previously contracted state, it is fixed to the base material 2 so as to be substantially flush with the peripheral surface of the outer wall material 3. And panel 1
The secondary gasket 4 is set on the skeleton side in the contracted state with a necessary joint interval, and is installed.
By the way, the joint spacing between the base materials 2 facing each other (opposing spacing)
Is an interval in which the pair of secondary gaskets 4 facing each other are sealed by abutting as they expand, but in this case, both of them are expanded in the middle of the expansion stage before the secondary gasket 4 is completely expanded. Of course, the interval may be such that the secondary gaskets 4 come into contact with each other. Although the watertight material 5 is fixed in a laminated manner on the surface of the contact portion 4a on the back surface side, the watertight material 5 is set so as to improve the watertightness on the back surface side of the base material 2. There is.

Reference numeral 6 denotes a primary gasket, which is inserted into the joint between the outer wall members 3 facing each other in a pressing manner from the outer wall member 3 side. Has a plurality of lip pieces 6a protruding in a state orthogonal to the insertion direction.
The lip piece 6a is set so as to be inserted into the peripheral surface of the outer wall member 3 in a state of being elastically deformed, whereby the primary gasket 6 is prevented from being pulled out from the outer wall member 3, and at the same time, between the outer wall members 3. It is designed to be sealed. Further, the base material 2 is attached to the insertion end of the primary gasket 6.
A protrusion 6b extending to the position is formed so as to project, and the protrusion 6b is sandwiched by the abutting portion 4a of the expanded secondary gasket 4 so as to further prevent the primary gasket 6 from coming off. .

In the embodiment of the present invention configured as described above, the joint between the panels 1 built in the body is sealed by the primary gasket 6 and the secondary gasket 4, but the secondary gasket Numeral 4 indicates that when the panel 1 is installed, the panels are contracted and face each other at the time of building the panel, so that they do not interfere with each other by abutting each other, and they can be installed and set with a predetermined joint interval. After that, the primary gasket 6 is inserted and incorporated from the surface side. At this time, since the secondary gasket 4 is in a contracted state with a gap between the opposing surfaces, the primary gasket 6 can be inserted and incorporated in the protruding posture without the protrusion 6b being obstructed by the secondary gasket 4. Thereafter, the secondary gasket 4 in the contracted state expands over time and the opposing ones come into contact with each other, thereby sealing the portion and sandwiching the ridge 6b to prevent the primary gasket 6 from coming off. It will be. Therefore, there is no need to install the conventional secondary gaskets 8 on the frame in a state where they are in abutment with each other, which simplifies the construction work, and the construction error is absorbed by the expanding secondary gasket 4. Therefore, there is no problem such that a gap is formed between the secondary gaskets 8 facing each other due to the error or they interfere with each other.

Moreover, the primary gasket 6 has a base material 2
A ridge 6b extending to the position is formed, and the ridge 6b is formed.
Since b is clamped by the expanded contact portion 4a and is prevented from coming off, even if the primary gasket 6 is loosely inserted into the joint when there is a construction error, It is possible to maintain the retaining performance by sandwiching the ridge 6b by the secondary gasket 4. Besides, the primary gasket 6
Has a structure in which the back side of the primary gasket 6 is supported by the secondary gasket 4, so that when the primary gasket 6 is forced inward by mischief or the like, the secondary gasket 4 serves as a member for preventing the primary gasket 6 from being pushed more than necessary. It is possible to prevent the primary gasket 6 from entering the inside and being depressed in a depressed shape.

Further, in the present embodiment, since the secondary gasket 4 has the concave groove portion 4b, when there is water that has penetrated beyond the primary gasket 6 to the side of the base material 2, the secondary gasket 4 is comrades. There are some that try to enter the inside from the contact surface due to the capillarity phenomenon, but the recessed groove portion 4b in the middle interrupts the capillarity phenomenon and prevents the deep penetration of water.

The present invention is not limited to the above-mentioned embodiment, and the shape of the protrusion provided at the insertion end of the primary gasket may be the same as that of the second embodiment shown in FIG. . That is, the protrusion 7b of the second embodiment is extended to the groove 4b of the secondary gasket 4, and the locking protrusion 7c is bulged at the tip of the protrusion 7b. This is the same as the first embodiment in that the protruding strip 7b is held by the expanded secondary gasket 4, but in this case, the locking strip 7c has the concave groove portion 4b.
It has a structure in which the primary gasket 7 is locked by being pushed in. Therefore, there is an advantage that the retaining of the primary gasket 7 can be made more reliable. Also,
The panel may be any one as long as it is formed by the back side base portion and the front side outer wall portion, and the base portion is not limited to the flat plate shape (board shape) as in the above embodiment. As shown in FIG. 4 (A), a frame material (a variety of frame materials such as a metal frame and a wooden frame) 11 is used as a framework, and the back surface of the frame material is covered with a covering material such as a thin plate, paper, and a cloth material. Hollow material, hollow material filled with core material such as honeycomb core, or heat insulating material such as glass wool, rock wool, rigid polyurethane foam, polystyrene foam, and outer wall as shown in FIG. It goes without saying that the one integrally formed with the part can be appropriately used if necessary.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a procedure for sealing joints between panels.

FIG. 2 is an explanatory diagram showing a procedure for sealing joints between panels according to the second embodiment.

FIG. 3 is an explanatory diagram showing a procedure for sealing joints between panels in a conventional example.

FIGS. 4A and 4B are side views of panels according to other embodiments.

[Explanation of symbols]

 1 Panel 2 Base Material 3 Outer Wall Material 4 Secondary Gasket 4a Abutment 4b Recessed Groove 5 Watertight Material 6 Primary Gasket 6a Lip Piece 6b Protrusion

Claims (2)

[Claims] 1. A gasket structure for sealing joints between panels, which is formed by a base portion on the back surface side and an outer wall portion on the front surface side, wherein joints between adjacent panels are pressed between adjacent outer wall portions. Shall be sealed by using a primary gasket that is inserted in a circular shape and a secondary gasket that is interposed between the base parts, and the primary gasket is press-fitted onto the outer peripheral surface while being elastically deformed to the peripheral surface of the outer wall. It is assumed that the lip piece is formed and that the protruding tip that extends to the position of the base portion is formed at the insertion tip, and the secondary gasket is fixed to the peripheral surface of the base portion with one side facing each other. A gasket structure for joint sealing between panels, which is formed by a time-expanding member that expands to seal and seal between the opposing parts and at the same time sandwiches the ridge of the primary gasket. 2. A primary gasket that seals between joints formed between a backside base portion and a front side outer wall portion between outer wall portions and a secondary gasket that seals between the base portions. When sealing, the secondary gasket shall be formed of a time-expansion member that expands over time from the contracted state, and the panel in which the secondary gasket in the contracted state is fixed in advance on the peripheral surface of the base part is provided with the necessary joint spacing. After setting it as it exists, insert the primary gasket having the protrusion extending at the tip into the joint from the panel surface side to the joint so that the protrusion reaches the position of the base, and then the secondary gasket A method for sealing joints between panels, in which the secondary gaskets are sealed together by the time-dependent expansion of the gaskets, and the ridges of the primary gaskets are clamped to prevent them from coming off.