JP4249048B2 - Waterproof structure for external floors such as balconies - Google Patents

Description

  The present invention relates to a waterproof structure for an external floor such as a balcony that projects from the outside of a building body.

  As the structure of the external floor such as a balcony, the main body type that is integrated with the outer wall of the building body, and the incidental type that is attached separately to the building body and attached to the building body with arms etc. There is.

  Generally, in the building-integrated type, there is no gap between the balcony and the outer wall, and even if the water overflows from the balcony floor due to heavy rain or the use of water during cleaning, There is no leakage from the wall to the back of the eaves.

  However, in the incidental structure, an external floor such as a balcony and the outer wall surface of the building body are structurally separated, so that water leaks from a gap in this portion. Further, the problem of water leakage of the incidental balcony occurs not only near the wall but also on the handrail side when there is a similar gap outside the waterproof floor.

  As a means for preventing such water leakage, it is conceivable to completely close the gap by, for example, filling a wet sealant. However, according to such a wet method, the field work becomes complicated and the cost increases, and the incidental type The superiority of will fade. For this reason, in the incidental type balcony, it is permissible that rainwater leaks from the wall side in some cases because it is unavoidable. However, it is not necessarily understandable from the resident's standpoint, and excellent waterproof construction with a dry structure is required.

  As an example of waterproof construction by such a dry construction method, as shown in Patent Documents 1 and 2 below, the gap between the side wall portion of the waterproof pan made of waterproof steel plate and the building body is separated from the outer wall of the building body. It is conceived that the drainage cover is covered with a protruding drainage cover, and a waterproof packing is provided between the rear surface of the drainage cover and the upper end of the side wall so that rainwater does not flow from the rear surface of the drainage cover.

JP 2002-106059 A Japanese Patent Laid-Open No. 2002-194859

  The invention described in the above-mentioned patent document is intended to prevent leakage from the gap on the back surface side with the waterproof packing on the back surface side of the cover while preventing the entry from above with the drain cover. .

  However, the back of the draining cover and the waterproof pan are only waterproofed with a single packing, so when a large amount of water rushes to this back part, water leakage from the packing gap is sufficient. However, there is a drawback that cannot be said to be completely waterproof.

  In view of such conventional drawbacks, the present invention is a waterproof waterproof structure that can almost completely prevent the water on the floor surface from flowing into the back of the eaves from the gap with the main body of the building, particularly in an attached balcony. The purpose is to provide a structure.

In order to solve the above-described problem, in the present invention, a waterproof cover is provided so as to cover the outside from the upper side of the side wall of a waterproof floor such as a waterproof pan , and the waterproof cover includes an upper surface portion and an upper surface portion. And a front surface portion that projects downward and faces the inner surface of the side wall portion, and is formed by bending the back surface of the upper surface portion of the waterproof cover and the upper end of the side wall portion inwardly toward the front surface portion. A watertight material is provided between the upper surface of the return piece, and a gap between the back surface of the front surface portion of the waterproof cover and the inner surface of the side wall portion is defined as one of the front surface portion or the side wall portion . It is characterized by being covered with a more protruding packing.

In the invention of claim 2, the watertight material is made of foamed resin or other soft resin, and in the invention of claim 3, the watertight material is bonded in advance to the back surface of the upper surface portion of the waterproof cover. Thus, the construction becomes easy.

According to a fourth aspect of the present invention, there is provided a packing in which the packing is in a fin shape and the tip thereof is in contact with the inner side surface of the side wall portion.

In the invention of claim 5, the base portion of the packing is attached to the front surface portion of the waterproof cover, so that the packing is also applied simultaneously with the installation of the waterproof cover. In the invention of claim 6, which root portion of the packing is attached by fitting into the groove of the front portion of the waterproof cover is provided. In the invention of claim 7, the opposite side of the upper surface portion of the waterproof cover to the front surface portion is attached to the outer wall surface of the building body, and covers the gap between the side wall portion and the outer wall surface. It is effective for the incidental type having a gap in the part.

The invention according to claim 8 provides that the waterproof cover is a cover provided on a handrail side such as a balcony handrail that is not in contact with the outer wall of the building body.

According to this invention, since the waterproof cover is provided first, it is possible to prevent water from entering the gap on the outside of the side wall portion of the waterproof pan from above by the waterproof cover. Furthermore, between the waterproof cover and the side wall part has a double waterproof structure of fin-shaped packing and stretchable watertight material, so that water accumulated in the waterproof pan from the back side of the waterproof cover to the back side of the eaves It can prevent wrapping around.

  The waterproof structure of the present invention is constructed by a dry construction method using a fin-like packing and a watertight material, and can be constructed at a lower cost than a wet construction method, and particularly in the incidental type, the merit of the incidental type is impaired. There is no.

In addition, a water return piece projecting inward is provided at the upper end of the side wall of the waterproof pan, and not only can the water return piece prevent upward movement of water, but also a stretchable watertight material can be interposed between the water return piece. By compressing and holding, the watertight material can be stably held.

In addition, by attaching both or at least one of the watertight material and the fin-shaped packing to a waterproof cover or the like in advance, the construction becomes easier.

According to the seventh aspect of the present invention , while the gap between the outer wall surface and the side wall of the waterproof pan is closed from above with the waterproof cover, water leakage from the back surface of the waterproof cover can be prevented.

In the invention of claim 8 , similarly, even on the handrail side, it is possible to prevent water from leaking from the back side of the waterproof cover with the fin-like packing and the watertight material while closing the gap on the outside of the side wall portion with the waterproof cover. effective.

  FIG. 1 is an exploded perspective view showing a schematic structure of an attached balcony, and shows a corner portion of a building body (1). (2) is a beam of the building body (1), which is made of H-section steel as shown in the figure. (3) and (4) are a pair of upper and lower outer wall panels attached to the outside of the beam (2).

  (6) is a balcony floor frame. As a specific example, as shown in this figure, a building body (1) a pair of horizontal frames (7) and (8) parallel to the outer wall surface, and these horizontal frames (7 ) (8) and a plurality of crosspieces (9), (9)... The horizontal frames (7) and (8) parallel to each other are made of lip channel steel, and the horizontal frame (7) on the side of the building body (1) has its groove (10) facing outward as shown in FIG. Thus, the other horizontal frame (8) is arranged so that the groove (10) faces inward. A large number of crosspieces (9) and (9) arranged between the horizontal frames (7) and (8) are made of channel steel without a lip.

  When constructing the balcony, first, the floor frame (6) is fixed to the building body (1) so as to protrude outside the outer wall panels (3) and (4). Although the mounting structure is not shown, it is fixed using, for example, an arm that protrudes from the frame of the building body (1) through a vertical joint portion (not shown) of the outer wall.

  A base plate (12) is installed and fixed on the upper surface of the floor frame (6) before or after the floor frame (6) is attached. The base plate (12) is preferably a plywood having a predetermined thickness.

Further, the lower frame (11) of the handrail support column (5) is fixed to the outer side surface of the lateral frame (8) on the side not facing the outer wall panel (3) (4) side, and the handrail A support column (5) is provided protruding upward . (13) is desirably a waterproof pan made of a steel plate, which is installed on the upper surface of the base plate (12), and has a side wall portion (15 on the outer periphery of the four sides of the quadrilateral bottom portion (14). ) Has stood up.

(16) shows a rising support wall installed so as to overlap the outside of the side wall (15) of the waterproof pan (13). (17) covers from above the gap (20) (FIG. 3) between the wall-side waterproof wall composed of the side wall portion (15) and the rising support wall (16) and the outer wall surface (19) of the building body. It is a waterproof cover. Next, details of the waterproof structure near the wall will be described with reference to FIGS.

  The rising support wall (16) basically has an L-shaped cross section composed of a vertical portion (21) and a lower horizontal portion (22) at the lower end of the vertical portion (21). ) Is provided with an upper support piece (23) protruding in the opposite direction to the lower horizontal portion (22).

  The lower horizontal portion (22) has a bent cross-sectional shape that forms a concave portion (22a) along the longitudinal direction at the center of the upper surface in the width direction. The rising support wall (16) is connected to the upper surface of the end of the base plate (12) on the side of the building body (1) by a fixing tool (24) such as a screw inserted into the recess (22a) from above. It is fixed along the part. At this time, the upper support piece (23) is on the wall side, and the lower horizontal part (22) is on the opposite side.

  The waterproof pan (13) is installed so as to cover the lower horizontal portion (22) after the rising support wall (16) is attached. A heat insulating material (25) made of foamed resin or the like is provided on the back side of the bottom (14) of the waterproof pan (13). In FIG. 1, the entire waterproof pan (13) is shown as an integral unit, but it may be divided into a plurality of units.

In the state where the rising support wall (16) and the waterproof pan (13) are attached, the vertical portion (21) of the support wall (16) overlaps the outer surface of the side wall portion (15) of the waterproof pan (13). Are touching. In addition, the upper end of the side wall (15) of the waterproof pan (13) is provided with a water return piece (26) that protrudes inward by bending it inward (center side of the balcony floor) as shown in the figure. It has been. There is a step between the upper surface of the water return piece (26) and the upper surface of the upper support piece (23) of the rising support wall (16) so that the upper support piece (23) side becomes higher.

  In the vertical portion (21) of the rising support wall (16), a flange (29) along the horizontal direction is integrally formed in the vicinity of the lower end portion of the surface facing the outer wall surface (19). . This ridge (29) is released upward from the surface of the vertical portion (21) by integrally forming a portion (28) protruding like a ridge from the surface of the vertical portion (21). It has a groove shape.

  As shown in FIG. 3, a lateral joint portion (18) between the outer wall panels (3) and (4) is located on the outer wall portion of the building body (1) at a position slightly lower than the upper end of the vertical portion (21). ing. The collar (29) is further located below the horizontal joint (18).

  (31) is a horizontal draining material provided so as to protrude from the inside of the outer wall panels (3) and (4) to the outer wall surface (19) side through the horizontal joint portion (18). The outer tip of the horizontal draining material (31) on the outer wall is bent downward, and the flange (29) is positioned below the bent tip (32). Note that (33) is a cover piece projecting downward from the lower surface of the flat water cutting material (31).

  In the above, the rising support wall (16) is preferably an extrusion of aluminum or the like in a state where the vertical portion (21), the lower horizontal portion (22), the upper support piece (23) and the flange (29) are integrated. Although formed integrally by molding or the like, it is not limited to this.

  The outer wall panels (3) and (4) are composed of a siding material (35) constituting the outer wall surface (19) and a grooved frame material (36) attached to the back surface of the siding material. (37) is a frame frame arranged along the upper surface or the lower surface of the beam (2), and is made of grooved steel with a lip as shown in the figure. The outer wall panels (3) and (4) Although it is supported through the assembly frame (37), its details are omitted. Further, the horizontal draining material (31) is attached by engaging its inner end and the tip of the cover piece (33) with the joint fitting (30) of FIG. 3 fixed to the beam (2) or the like. The details are also omitted.

  The waterproof cover (17) has an upper surface (40) whose top surface is horizontal or slightly inclined downward toward the balcony floor, and projects downward from the tip of the top surface (40) of the balcony floor at the center side. And a front surface portion (41). Further, a mounting piece (42) is provided projecting upward at the tip of the upper surface (40) opposite to the front surface (41) side. The upper end of the mounting piece (42) is bent in the same direction as the upper surface part (40), and a flange piece (43) having a vertical section protrudes upward at the tip of the bent piece (39). Is provided.

  Further, a watertight material (44) having elasticity is provided in advance on the back surface of the upper surface portion (40) at a position near the front surface portion (41). This stretchable watertight material (44) is preferably made of a resin foam having a structure of independent or continuous foaming (a structure in which bubbles are crushed and the cavities are not connected when compressed). It is adhered to the back surface of the upper surface portion (40) along the longitudinal direction.

  On the other hand, a fin-like packing (45) is provided on the back surface of the front surface portion (41) so as to protrude in the horizontal direction at a position near its lower end. The fin-like packing (45) is made of a flexible material such as rubber or other soft material, and gradually becomes thinner toward the tip to increase flexibility. In addition, a flange-shaped mounting portion (46) is integrally formed at the base portion on the front surface portion (41) side, and is inserted into a mounting groove (47) formed on the back surface of the front surface portion (41). The part (41) is attached over substantially the entire length in the longitudinal direction.

  The waterproof cover (17) having the above configuration is installed from above so as to close the side wall (15) of the waterproof pan (13) and the gap between the rising support wall (16) and the outer wall surface (19). Is done. And it fixes to the outer surface of the lower end of the outer wall panel (3) of an upper side with the bis | screw (48) and other fixing tools inserted through this attachment piece (42) from the outer side of an attachment piece (42).

At this time, the front surface portion (41) faces the inner surface of the side wall portion (15). And the fin-like packing (45) of the lower end is contact | abutting to the inner surface of a side wall part (15) . At that time, the fin-like packing (45) is in elastic contact with its tip bent upward.

  On the other hand, as shown in the figure, the upper surface portion (40) is placed on the upper surface of the upper support piece (23) at the upper end of the vertical portion (21) at the wall side of the watertight material (44). In this state, the water-tight material (44) is strongly pressed against the upper surface of the water return piece (26) at the upper end of the side wall (15) and is held in a compressed state, whereby the side wall (15) and the upper surface ( 40) is sealed.

  The upper side of the mounting piece (42) is filled with a wet sealing material (49) into a groove formed by the horizontal bent piece (39), flange piece (43) and outer wall surface (19) at the upper end. is doing.

  In the above waterproof structure, even if heavy rain or water during cleaning accumulates on the balcony floor consisting of the waterproof pan (13) and overflows to the wall side, the waterproof cover (17) is also provided, and the waterproof cover ( Since the space between 17) and the outer wall surface (19) is sealed with the sealing material (49), water does not leak over the waterproof cover (17) to the back of the eaves.

  Furthermore, the water which tries to rise upward from between the front surface part (41) and the side wall part (15) of the waterproof cover (17) is first blocked by the fin-shaped packing (45). Even if a large amount of water is rushed at the same time, even if a part of the fin-shaped packing (45) passes through the tip of the fin-like packing (45) and enters the upper gap (50), the water return piece It is dropped downward by (26). And even if it still turns around to the upper part side of the water return piece (26), since the watertight material (44) seals the gap, it is almost completely prevented from going around to the back side.

  The above is a water finish on the side of the outer wall surface (19) of the balcony floor. Next, a waterproof structure on the handrail side that does not face the wall will be described.

  As shown in FIGS. 4 and 5, on the handrail side, the outer surface of the side wall portion (15) of the waterproof pan (13) is substantially flush with the outer surface of the horizontal frame (8) of the floor frame (6). In such a state, it stands up. At the middle portion of the handrail support (5) fixed to the horizontal frame (8), at the position corresponding to the upper end of the side wall (15), this L-shaped receiving plate (55) is seen horizontally. The handrail support column (5) is fitted to the notch of the portion (56). As shown in FIG. 1, the receiving plate (55) is attached in advance to the handrail support column (5).

  The outer surface of the side wall portion (15) is superimposed on the surface of the vertical portion (57) projecting downward from the inner end of the horizontal portion (56), and the vertical portion from the inner side of the waterproof pan (13) The side wall (15) is fastened to its vertical part (57) by a screw (58), preferably screwed in. At this time, the upper surface of the horizontal portion (56) is slightly higher than the upper surface of the water return piece (26) at the upper end of the waterproof pan (13).

  A decorative cover (60) is attached to the side opposite to the side wall (15) with the handrail support (5) interposed therebetween. The decorative cover (60) covers the floor frame (6), the side wall (15), and the bottom of the handrail support (5) to the lower surface of the horizontal frame (8). The decorative cover (60) is supported by engaging the engaging groove (61) on the back surface thereof with the L-shaped receiving piece (59a) of the bracket (59) fixed to the outer surface of the handrail support column (5). Has been.

  (65) is another waterproof cover attached to the handrail side not facing the wall with respect to the waterproof cover (17) attached to the wall side. The handrail-side waterproof cover (65) includes an upper surface portion (62) and a front surface portion (63) protruding downward from one end of the upper surface portion. Further, an outer cover piece (64) is integrally formed at the end opposite to the front face portion (63) so as to protrude downward.

  The handrail-side waterproof cover (65) formed as described above has the front surface portion (63) facing the inner surface of the side wall portion (15), and the outer cover piece (64) at the upper end of the decorative cover (60). It is installed from above so as to face the outer surface. Thereby, the clearance gap between a side wall part (15) and a decorative cover (60) is covered from upper direction by this waterproof cover (65).

  At that time, an opening (67) through which the handrail support column (5) passes is formed in the upper surface portion (62) corresponding to the handrail support column (5). Standing up through (67). The waterproof cover (65) is fixed to the upper surface of the horizontal portion (56) with a fixing bolt (66), etc., but with a watertight material to close the gap of the opening (67). Another cover (not shown) may be provided.

  Then, on the back surface of the upper surface portion (62), the same watertight material (44) as that described above is provided in advance, corresponding to the water return piece (26) at the upper end of the side wall portion (15), and the same as above In addition, it is compressed between the water return piece (26) and kept watertight. In addition, the watertight material (44) protrudes from the gap between the tip of the water return piece (26) and the front surface portion (63), which is not partially compressed.

  Further, similarly to the lower end of the front surface portion (63), a fin-like packing (45) attached by inserting the root portion (46) into the mounting groove (47) on the back surface of the front surface portion (41) protrudes. . The tip of the fin-like packing (45) abuts against the inner surface of the side wall (15) in a state of bending upward, and double waterproofing similar to that on the wall side is performed.

  As a result, the water accumulated in the waterproof pan (13) leaks into the gap between the side wall (15) and the outer decorative cover (60), and this wraps around the ceiling and falls under the eaves. Or inconvenience of generating rust on the metal material in the ceiling.

  As shown in FIG. 6, handrail units (68), (68),... Are attached between the handrail support columns (5), (5), and a headboard (69) is installed thereon.

  The present invention is optimal for the balcony floor shown in the above embodiment, but is not necessarily limited to this, and can be applied to a veranda or other external floor projecting outside the building body. Moreover, it does not necessarily have to be an accessory type, and a case of a main body type having no gap on the wall side can also be applied to the handrail side.

It is a disassembled perspective view of the principal part which shows schematic structure of the balcony at the time of implementing this invention for an accompanying type balcony. It is a perspective view of the section of a wall edge part similarly. It is an enlarged vertical sectional view of a wall edge part. It is a perspective view of the principal part which shows the attachment condition of the waterproof cover by the side of a handrail. It is an enlarged longitudinal cross-sectional view which similarly shows the structure of the handrail support | pillar base part of the handrail side. It is a perspective view which shows the state before the handrail unit attachment of the whole balcony floor.

Explanation of symbols

(13) Waterproof pan
(15) Side wall
(17) Waterproof cover
(26) Water return piece
(40) Top surface
(41) Front part
(44) Watertight material
(45) Fin packing
(47) Mounting groove
(62) Upper surface
(63) Front part
(65) Waterproof cover

Claims (8)

A waterproof cover is provided so as to cover the outer side of the waterproof floor such as a waterproof pan from the upper side of the waterproof floor, and the waterproof cover projects downward from the upper surface part to the inner side surface of the side wall part. A watertight material between a back surface of the upper surface portion of the waterproof cover and an upper surface of a water return piece formed by bending the upper end of the side wall portion inward toward the front surface portion. The gap between the back surface of the front surface portion of the waterproof cover and the inner surface of the side wall portion is further closed with a packing protruding from one of the front surface portion or the side wall portion. Waterproof structure for external floors such as balconies. The waterproof structure for an external floor such as a balcony according to claim 1, wherein the watertight material is made of a foamed resin or other soft resin. The waterproof structure for an external floor such as a balcony according to claim 1 or 2, wherein the watertight material is bonded in advance to the back surface of the upper surface portion of the waterproof cover . The waterproof structure for an external floor such as a balcony according to any one of claims 1 to 3, wherein the packing has a fin shape, and a tip of the packing is in contact with an inner surface of the side wall portion. The waterproof structure of an external floor such as a balcony according to any one of claims 1 to 4, wherein a base portion of the packing is attached to the front surface portion of the waterproof cover . The waterproof structure for an external floor such as a balcony according to claim 5, wherein a base portion of the packing is fitted into a groove in the front portion of the waterproof cover . The side opposite to the front portion of the upper surface of the waterproof cover, attached to the outer wall surface of the building body, according to any of claims 1 to 6 gaps in which the covering of the side wall and the outer wall surface Waterproof structure of external floors such as balconies. The waterproof structure for an external floor such as a balcony according to any one of claims 1 to 6, wherein the waterproof cover is a cover provided on a handrail side such as a balcony handrail that is not in contact with an outer wall of a building body.

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