JP5010852B2 - External joint panel dry joint structure - Google Patents

Description

  The present invention relates to a joint waterproof structure for an outer wall panel.

  Conventionally, various dry joint methods using a fixed gasket that does not use a sealing material have been proposed. However, since the gasket to be inserted into the joint is a fixed type, when an error occurs in the joint width, there is a problem that the water stop performance of the gasket is affected, or the gasket cannot be installed depending on the joint width.

  For this reason, joint structures that can prepare a plurality of gaskets according to the joint width or can follow the joint width have been proposed.

  Even if a gasket is installed, the waterproof performance of the gasket is affected by the joint width, so it is difficult to determine whether the gasket has sufficient waterproof performance.

Furthermore, in the case of an outer wall panel made of a PCa plate, a steel frame that is also used as a formwork at the time of manufacturing the outer wall panel is used. In the initial stage, the concrete material and the frame are bonded, but the concrete material and Due to the difference in material properties from the frame, due to aging and temperature changes, cracks may occur at the interface between the concrete material and the frame, and water may invade from that part and cause water leakage.
JP-A-6-167060

  In view of the problems as described above, an object of the present invention is to provide a dry joint structure of an outer wall panel that can exhibit a constant water stoppage performance regardless of joint width errors.

The above-mentioned problem is a dry joint structure that stops the joint formed between adjacent outer wall panels,
An outer wall panel having a groove provided along a side edge of the outer wall panel;
It consists of a gasket inserted in each groove of the adjacent outer wall panel,
The gasket is solved by a dry joint structure of the outer wall panel, characterized by comprising a central part covering the joint between the outer wall panels and an engaging part inserted into the groove part of the outer wall panel.

  In this dry joint structure, with respect to the joint formed by the outer wall panel having the groove portion provided along the side edge portion of the outer wall panel, the center portion covering the joint between the outer wall panels and the groove portion of the outer wall panel are inserted. Since the gasket composed of the engaging portion is inserted into the respective groove portions of the outer wall panel, the gasket is always inserted in order to insert the gasket at a fixed shape of the groove portion provided in the outer wall panel. The predetermined water stop performance can be exhibited, and the predetermined water stop performance can always be exhibited regardless of the joint width between the outer wall panels.

  In addition, the gasket has a central part that covers the joints between the outer wall panels, and the center part can follow the joint width error between the outer wall panels, so even if there is an error in the joint width between the outer wall panels, can do.

Further, the outer wall panel is composed of a PCa plate composed of a frame and a concrete material,
The groove part may be a dry joint structure of an outer wall panel made of a frame and concrete.

  If the outer wall panel is a PCa plate, cracks may occur at the interface due to differences in material properties such as the frame and concrete used as the mold, but water is stopped by the gasket on the surface side where cracks occur. Stable quality can be secured without cracks at the interface.

Further, the outer wall panel comprises a frame and an outer wall material fixed to the frame,
What is necessary is just the dry joint structure of the outer wall panel in which the said groove part is formed by the base material interposed between the flame | frame and the outer wall surface material, and the outer wall surface material side part.

  Also in this case, since the gasket is inserted in a fixed portion of the shape of the groove portion provided in the outer wall panel, the gasket can always exhibit a predetermined water stopping performance, regardless of the joint width between the outer wall panels. The gasket has a central part that covers the joint between the outer wall panels, and can always follow the error in the joint width between the outer wall panels. Even if there is an error in the joint width, it can be constructed.

  Since the dry joint structure of the outer wall panel of the present invention is as described above, even if an error occurs in the joint width, the dry joint structure has a stable waterproof performance without affecting the waterproof performance of the gasket. Can be provided.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

  A dry joint structure 1 of an outer wall panel according to the embodiment shown in FIG. 1 includes an outer wall panel 3 made of adjacent PCa plates, a joint 2 and a gasket 7 formed therebetween, and 4 is an outer wall material constituting the outer wall panel 3. Concrete, 5 is a steel frame constituting the outer wall panel 3, and 8 is a paint film.

  In the outer wall panel 3, a steel frame 5 made of an L-shaped steel material in plan view is disposed on the side edge 3 a along the side edge. The groove portion 3b is formed of a surface and a concrete 4 that form side edges of the outer wall panel of the steel frame 5 along the steel frame 5, and is provided around the outer wall panel.

  The outer wall panel 3 is manufactured as follows. As shown in FIG. 2, the frame 5 made of an angle constituting the outer wall panel is placed on the surface plate 11 such that one end of the angle is in contact with the surface plate 11. A mold material 10 having the same shape as the groove 3 a is provided at a position to be a groove of the outer wall panel 3, that is, inside the frame 5 and in contact with the surface plate 11. The frame 5 is mounted on the surface plate 11 as a frame of the outer wall panel 3, but functions as a mold for placing concrete during manufacture. After the concrete has been placed and hardened, the outer wall panel 3 is removed from the surface plate 11 together with the frame 5, and then the mold member 10 is removed to complete the outer wall panel 3 made of a PCa plate.

  The outer wall panel 3 is attached to the building frame via a nut 6 attached to the frame to a beam which is a structural frame of the building. At this time, the joint width of the joint 2 between the outer wall panels causes an error due to various causes such as panel manufacturing accuracy and frame construction accuracy.

  The gasket 7 is inserted in the groove portion of the outer wall panel 3 as shown in FIGS. The gasket 7 includes a central portion 7a that covers the joint 2, two engagement portions 7b that are bent and connected to the central portion 7a, and an end portion 7c that extends laterally from the central portion 7a via the engagement portion 7b. Become. The engaging part 7b is inserted in the groove part 3b of the outer wall panel 3, and the arrow-shaped lip | rip as a biasing structure for urging | biasing and stopping water to the side part of the groove part 3b is provided in multiple steps. The central portion 7a is curved in the same direction as the side where the engaging portion 7b extends, and the end portion 7c is inclined and connected in the same direction as the side where the engaging portion 7b extends from the joint portion with the central portion 7a.

  As shown in FIG. 3 (E1) and (E2), when the interval between the adjacent outer wall panels 3 is narrow and the joint width dimension of the joint 2 is narrow, the central portion 7a of the gasket 7 is greatly curved and the joint width is increased. The engaging portion 7b of the gasket 7 is securely inserted into the groove portion 3b. Further, as shown in FIGS. 3 (row 1) and (row 2), when the interval between the adjacent outer wall panels 3 is wide and the joint width dimension of the joint 2 is wide, the central portion 7a of the gasket 7 is in an extended state. The joint width error is absorbed, and the engaging portion 7b of the gasket 7 is securely inserted into the groove portion 3b.

  In both cases where the joint width of the joint 2 is narrow and wide, the central portion 7a of the gasket 7 absorbs the error of the joint 2, and the engaging portion 7b of the gasket 7 is securely connected to the groove portion of the outer wall panel 3. The water stop performance of the joint is not changed by the joint width error, and a constant water stop performance can always be ensured.

  Moreover, when affixing the coating film 8 on the outer wall panel surface part, it is possible to prevent peeling from the end part of the coating film 8 by extending the coating film end part to the groove part 3b and inserting a gasket there. it can.

FIG. 4 shows a second embodiment of the present invention. 4A and 4B, 12 is an outer wall material, 13 is a frame of the outer wall panel, 14 is a base material that also serves as a positioning material for the outer wall surface material, and 15 is a screw that fixes the base material 14 to the frame 13. is there.
The base material 14 includes a joint engaging portion 14b that extends vertically from an end of the main body portion 4a that is attached in contact with the frame, and a positioning portion 14c that is used for alignment when the face material is attached.

  The outer wall panel 3 is manufactured by attaching the base material 14 to the frame 13 with screws 15 and fixing the outer wall material 3 to the frame 13 with a fixed hardware (not shown) with the base material 14c positioned.

  The gasket 7 is attached by being inserted into a groove portion 3b formed by the side portion 12a of the outer wall surface material 12 and the joint engaging portion 14b of the base material 14.

  Also in this embodiment, the center portion 7a of the gasket 7 absorbs the error of the joint 2 in both cases where the joint width of the joint 2 is narrow and wide, and the engaging portion 7b of the gasket 7 is surely secured. Can be inserted into the groove portion 3b of the outer wall panel 3, and the water stop performance of the joint does not change due to the joint width error, and a constant water stop performance can always be ensured.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, the case where the outer wall panel is made of a PCa plate or the case where the outer wall surface material is fixed to the frame is shown. However, the water stop structure of the outer wall panel is not limited to these, and can be applied to various types of outer wall panels. The

  Moreover, there is no restriction | limiting also about the form of a gasket, The other various thing shown by embodiment is possible, The example is shown in FIG. (A) is center portion 7a curved to the opposite side of engagement portion 7b, (B) is center portion 7a is bellows, (C) is center portion 7a side of engagement portion 7b. And the divided central part 7a extends from the contact point between the engaging part 7b and the central part 7a to the other contact side, and the external design is constant regardless of the joint width. It is made visible.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows this embodiment, Comprising: (a) is a cross-sectional plan view, (b) is a cross-sectional plan view of a gasket, (c) is an enlarged cross-sectional plan view of the main part, (d) is an exploded cross-sectional plan view It is. The figure is a perspective view showing the manufacturing status of the outer wall panel. FIGS. (E1) and (e2) are cross-sectional plan views showing the gasket installation situation when the joint width is narrow, and FIGS. (Row 1) and (row 2) show the gasket installation situation when the joint width is wide. FIG. It is a figure which shows 2nd Embodiment, (A) is a cross-sectional top view, (B) is an exploded cross-sectional top view. (A), (B), and (C) are cross-sectional views showing other forms of the gasket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Joint structure of outer wall panel 2 ... Joint 3 ... Outer wall panel 3a ... Side edge part 3b ... Groove part 4 ... Concrete 5 ... Frame 7 ... Gasket 12 ...・ Outer wall surface material 14 ... Base material

Claims (2)

It is a dry joint structure that stops the joint formed between adjacent outer wall panels,
The outer wall panel is composed of a PCa plate made of concrete and a frame that functions as a formwork for placing concrete when manufacturing the outer wall panel, and along the side edge of the outer wall panel, the side edge of the outer wall panel of the frame The groove that opens to the surface side of the outer wall panel is formed by the surface forming the concrete and the concrete,
Gasket inserted into the respective grooves of the adjacent outer wall panel is composed of an engagement portion which is inserted into a central portion which covers the joint between the outer wall panel groove of the outer wall panel, the central portion is joint The dry joint structure of the outer wall panel, characterized by being able to absorb the error of the outer wall panel. It is a dry joint structure that stops the joint formed between adjacent outer wall panels,
The outer wall panel is composed of a frame and an outer wall surface material fixed to the frame, and a base material serving also as a positioning material for the outer wall surface material is interposed between the frame and the outer wall surface material. Along with this, a groove is formed by the base material and the outer wall material side,
Gasket inserted into the respective grooves of the adjacent outer wall panel is composed of an engagement portion which is inserted into a central portion which covers the joint between the outer wall panel groove of the outer wall panel, the central portion is joint The dry joint structure of the outer wall panel, characterized by being able to absorb the error of the outer wall panel.

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