JP6329771B2 - Waterproof structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a waterproof structure applied to a joint location when an upper end of a staircase is joined to an upper floor in a building structure where a staircase is installed.

In a building, it is common that a staircase that connects a lower floor and an upper floor and serves as a moving route to upper and lower floors is installed.
When installing stairs in this way, it is necessary to join the upper end of the stairs standing from the lower floor to the upper floor.
A general technique for attaching such a staircase has been proposed (see, for example, Patent Document 1).

In Patent Document 1, a staircase junction structure is disclosed.
In the technique of Patent Document 1, the upper end of the staircase is fixed to a steel arm projecting from the floor beam.
And the mortar at the upper end of the staircase and the mortar of the upper floor (walking part) that is the jointed part are cut off at the joined part, and the water immersed in the gap formed by this edging can be drained. It is configured.

Japanese Patent No. 4243203

Thus, in the prior art, a technique for joining the upper end of the stairs and the upper floor and a device for drainage in the part are made.
However, with regard to waterproofing for the joint between the upper end of the staircase and the upper floor, not only water is drained by the gap for drainage described in Patent Document 1, but also studies for ensuring higher waterproof properties are required. It was.
On the other hand, in general, in a building, there is a case where an outdoor staircase spanned in order to use the doorway installed on the upper floor from the lower floor.
When adopting such a structure, an outdoor landing is installed at the lower part of the entrance / exit installed on the upper floor, and an outdoor staircase is installed from the lower floor (or the ground surface) toward the landing.
In such a case, since rainwater reaches the outdoor staircase and the surrounding area, an even higher waterproof measure is required.
Therefore, not only water is drained by the drain gap described in Patent Document 1, but also a high waterproof treatment that reliably blocks the intrusion of rainwater or the like into the housing side is demanded outdoors.
That is, it has been necessary to achieve high joint strength indoors and outdoors, particularly outdoors, and to establish high waterproofness at the joint portions.

An object of the present invention is to solve the above-described problems, and it is possible to realize higher jointability and waterproofness at the joint portion between the upper end of the stairs and the upper floor surface. It is to provide a waterproof structure .

The above object is achieved according to the waterproof structure according to the present invention, a stepped upper portion, the waterproof structure in the connecting portion between the upper floors of the floor, and floor beams to be the floor of the skeleton, with the stairs side of the floor A parting wall , a joint metal that penetrates the parting wall from the floor beam and is taken out to the upper end of the staircase and connects the upper end part of the staircase and the floor beam , a draining member, and a waterproofing part of the staircase joint comprising a member, the parting wall, front side joining hardware arrangement設孔that the joining fittings penetrates and is formed in the upper portion of the parting wall, along with the boundary portion is arranged, the boundary from section, said draining member is disposed extending downward to the rear of the front side joining hardware arrangement設孔, while being disposed on the front side joining hardware arrangement設孔, opposite the draining member It is solved by the stepped junction waterproofing member is disposed

The upper end of the stairs is connected to the floor beam by a joint hardware.
Furthermore, a parting wall is disposed between the floor beam and the upper part of the stairs from the viewpoint of waterproofness and design.
Since it is constituted in this way, it is necessary to pass through the front side joint fitting arrangement hole formed in the parting wall and to take the joint hardware from the floor beam in the staircase direction.
For this reason, rainwater or the like may enter from the front side joint fitting arrangement hole, but in the present invention, the front side joint fitting waterproof member is provided in the front side joint fitting arrangement hole, and the front side joint fitting is provided. A draining member was arranged opposite to the arrangement hole.
As a result, it is possible to prevent the intrusion of rainwater and the like by closing the front side metal fitting arrangement hole, and even if rainwater or the like may enter the housing side through the location, the drainage The member can prevent further intrusion to the housing side.
Moreover, since a staircase upper part is attached from a floor beam by a joining member, high joining property is realizable.

At this time, as described in claim 2, the housing-like inner portion that fits into the front-side joint fitting arrangement hole and covers at least a part of the front-side joint fitting arrangement hole on the floor beam side is provided. It is preferable that the insertion portion is formed.
If comprised in this way, at least one part by the side beam side of a front side joining metal fitting arrangement | positioning hole can be covered with the insertion part which comprises a staircase junction waterproofing member.
For this reason, it is possible to effectively prevent rainwater and the like from entering from the staircase side of the parting wall, and to effectively avoid further penetration of rainwater and the like into the housing side by the interpolating portion. it can.

In this case, specifically, as described in claim 3, the staircase joint waterproofing member has a housing-like insertion part and a flange-like extension extending around the opening of the insertion part. A flange portion, and the insertion portion is fitted into the front side fitting fitting arrangement hole and protrudes to the floor beam side, and the flange portion is formed on the parting wall. It is preferable to be configured so as to be stacked and attached to the side surface of the staircase because it is possible to improve the workability of the mountability and secure the mounting strength.
Further, in the flange portion extending from the periphery of the opening of the insertion portion in a flange shape (that is, toward the outside), the flange portion may be formed so as to extend inward from the opening of the insertion portion.
In other words, it is preferable to make the opening area of the flange portion smaller than the opening area of the insertion portion because it is possible to effectively prevent the intrusion of rainwater and the like.

At this time, as described in claim 4, in the interpolator, the joining hardware has rear through hole is formed that will be inserted, it said draining member is opposed to the rear through-hole Are preferably arranged.
If comprised in this way, even if rainwater etc. may permeate the housing side through the insertion part, this draining member can prevent further intrusion into the housing side.

Further, at this time, as described in claim 5, it is preferable that a sealing material is disposed in a gap between the opening of the insertion portion and the metal joint.
Furthermore, at this time, it is preferable that the staircase is an outdoor staircase installed outdoors.
As described above, it is preferable that a sealing material is further provided because the waterproof property is further improved.
And if it has the waterproof structure set many times like this invention, it can apply effectively in the outdoor staircase with high frequency exposed to rainwater etc.

According to the present invention, the upper end of the staircase and the floor beam are connected by the joint hardware, the parting wall is disposed between the floor beam and the upper part of the staircase, and the front side joint hardware formed on the parting wall is disposed. By passing through the hole, the waterproofness of the structure in which the metal joint is taken out from the floor beam in the staircase direction can be reliably maintained high.
That is, the possibility of rainwater and the like entering from the front side joint fitting arrangement hole is reduced, and the insertion part constituting the staircase junction waterproofing member at the part, at least on the floor beam side of the front side joint fitting arrangement hole Because it can cover a part, it can prevent rainwater from entering from the staircase side of the parting wall, and it effectively avoids further intrusion of rainwater etc. to the housing side by the interpolated part. can do.
Moreover, by further applying a draining material or a sealing material, it is possible to exhibit high waterproofness assembled in layers.
Furthermore, such a structure is preferably used in outdoor staircases that are frequently exposed to rainwater or the like, and has higher jointability and waterproofing at the joint between the upper end of the staircase and the upper floor surface. Both can be realized.
Furthermore, since the upper part of the staircase is attached from the floor beam by the joining member, high jointability can be realized.

It is side surface explanatory drawing which shows the outdoor staircase which is an application location of the staircase junction waterproofing member which concerns on one Embodiment of this invention. It is upper surface explanatory drawing of the outdoor staircase which concerns on one Embodiment of this invention. It is the sectional view on the AA line of FIG. It is decomposition | disassembly explanatory drawing of the junction part unit concerning one Embodiment of this invention. It is the front view and perspective view of a staircase junction waterproofing member concerning one embodiment of the present invention. It is a use state exploded perspective view of the staircase junction waterproofing member concerning one embodiment of the present invention. It is a use state perspective view of the staircase junction waterproofing member concerning one embodiment of the present invention. It is an isometric view explanatory drawing which shows the water stop of the staircase junction waterproofing member which concerns on one Embodiment of this invention. It is explanatory drawing which shows the water stop structure of the staircase junction waterproofing member which concerns on one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In addition, the structure demonstrated below does not limit this invention, In addition to including the equivalent range, it can change variously within the range of the meaning of this invention.
The present embodiment relates to an outdoor staircase joint waterproofing member capable of realizing higher jointability and waterproofness at a joint portion between an upper end of an outdoor staircase and an upper floor surface.

  FIG. 1 to FIG. 9 show an embodiment according to the present invention, FIG. 1 is an explanatory side view showing an outdoor staircase where a staircase joint waterproof member is applied, and FIG. 2 is an explanatory top view of an outdoor staircase. 3 is a cross-sectional view taken along line AA in FIG. 2, FIG. 4 is an exploded explanatory view of the joint unit, FIG. 5 is a front view and perspective view of the stair joint waterproof member, and FIG. 6 is the use of the stair joint waterproof member. FIG. 7 is an exploded perspective view of the staircase joint portion, FIG. 8 is a perspective explanatory view showing the water stoppage of the staircase waterproof member, and FIG. 9 shows the water stop structure of the staircase waterproof member. It is explanatory drawing.

In this embodiment, as shown in FIGS. 1 and 2, an example in which the present invention is applied is exemplified by an outdoor staircase R connecting an outdoor floor of an entrance opening an outer wall of an upper floor and a ground surface. Show.
However, the present invention is not limited to this. Of course, any level can be used for communication, and in view of the exclusion of condensed water, etc., it should also be used suitably for stairs installed indoors. Is also possible.
That is, any staircases, ladders, and the like may be used for joining without departing from the spirit of the present invention.

In FIG. 1, the external appearance side view of the place where the junction part unit S containing the staircase junction waterproofing member 1 which concerns on this embodiment is used is shown.
As shown in FIG. 1, in the present embodiment, an entrance / exit opening and a door P1 attached to the opening are provided on the wall surface of the second floor portion, and from the lower end of the lower end of the door P1, outward. An extended deck P2 is provided.
The outdoor staircase R according to the present embodiment is a staircase that is slanted from the ground surface to the deck P2, and the lifter passes the outdoor staircase R from the ground surface to the deck P2 and accesses the door P1. It is possible (and vice versa).
The lower end of the staircase is fixed to the garage foundation P3, and the vicinity of the joint is covered with a staircase pouch P4 of mortar.

With reference to FIGS. 3 to 7, the joint unit S configured to include the staircase joint waterproofing member 1 according to the present embodiment will be described.
As shown in FIGS. 3 and 4, the joint unit S according to the present embodiment is formed with a staircase joint waterproofing member 1, a staircase closing material 2, a joint metal 3, and an auxiliary joint metal 4 as main components.
The staircase parting material 2 according to the present embodiment is configured with a substantially rectangular cylindrical boundary part 21, a parting wall 22, and a lower arrangement wall 23 as a basic configuration.

The boundary portion 21 has a substantially rectangular cylindrical shape, and is disposed with both openings directed in the frontage direction.
And this upper surface part becomes a boundary part (what is called a “husk surface”) of the outdoor stairway entrance.
For convenience, the rectangular wall above the boundary 21 is referred to as a boundary wall 21A, and the rectangular wall disposed below and facing (in parallel with) the boundary wall 21A has the same shape as the lower wall 21B (the boundary wall 21A). ). Of the two side walls connecting the boundary wall 21A and the lower surface wall 21B, the side wall disposed on the front surface (the outdoor staircase R installation side) is referred to as a front side wall 21C, and the front side wall 21C and the front-rear direction The rear side wall 21D (having the same shape as the front side wall) disposed opposite to (in parallel with).
Thus, the boundary portion 21 is formed in a substantially rectangular cylindrical shape by the boundary wall 21A, the lower surface wall 21B, the front side wall 21C, and the rear side wall 21D.

The parting wall 22 is a substantially rectangular wall that hangs downward from the front side wall 21 </ b> C constituting the staircase parting material 2, and the lower placement wall 23 is perpendicular to the parting wall 22 from the lower end side of the parting wall 22. It is a substantially rectangular wall extending rearward.
In addition, a joint hardware arrangement hole H is formed so as to cut out a part of a continuous portion between the parting wall 22 and the lower placement wall 23 (in the example of the figure, two joint hardware installation holes H are provided. Formed).

  The metal fitting arrangement hole H is a rectangular long hole that cuts off the parting wall 22 in the vertical direction (hereinafter, this portion will be referred to as “front side metal fitting arrangement hole H1”), and a lower arrangement wall that communicates therewith. This is a hole formed by a rectangular long hole that is cut out in the front-rear direction (hereinafter, this portion is referred to as a “lower-surface-side joint fitting hole H2”).

The metal joint 3 according to this embodiment is a steel member that includes a main body portion 31, a staircase joint portion 32, and a beam joint portion 33.
The main body portion 31 is a substantially rectangular flat plate, and a rectangular step joint portion 32 is welded to a front end portion thereof.
The vertical height of the main body 31 is configured to match the distance between the lower wall 21 </ b> B and the lower wall 23.
In addition, the bolt hole V1 is formed in the stair junction part 32 (in this example, four pieces are formed).
A rectangular beam joint 33 is welded below the rear end of the main body 31.

Bolt holes V2 are formed in the beam joint portion 33 (four in this example).
In addition, bolt holes that match the bolt holes V1 and V2 are formed in the steel floor beam T1 (in this example, H-shaped steel) and the upper end of the staircase, and these bolt holes are aligned and fastened with bolts. Thus, the metal joint 3 is attached to the steel floor beam T1 (in this example, H-shaped steel) or the upper end of the staircase.
The auxiliary joint metal 4 is an L angle made of steel, and similarly, a bolt hole V3 for attachment to the floor beam T1 is formed.

The stair parting material 2, the joint metal 3, and the auxiliary joint metal 4 thus configured are assembled as follows.
The metal joint 3 is welded to the staircase parting material 2 in a state in which the staircase joint portion 32 protrudes forward (upper end side of the staircase) from the front side metal joint arrangement hole H1.
That is, since the height in the vertical direction of the main body 31 constituting the metal joint 3 is configured to match the distance between the lower surface wall 21B and the lower arrangement wall 23, by welding the vertical contact portion. The joining member 3 is attached to the staircase parting material 2 in a state in which the staircase joining portion 32 protrudes forward (upper end side of the staircase) from the front side joint fitting arrangement hole H1.
In the present embodiment, two metal fittings 3 are attached.

At this time, the beam joint 33 protrudes rearward from the boundary part 21 of the staircase parting material 2.
Similarly, the two auxiliary joining metal parts 4 are also attached to the stair parting material 2 (each outside the two joining metal parts 3).
And in this state, it can attach to stairway upper end and floor beam T1 by the bolt fastening from bolt hole V1, V2, V3.

Next, the stepped joint waterproof member 1 according to the present embodiment will be described with reference to FIGS. 5 and 6.
The staircase joint waterproof member 1 according to the present embodiment covers the front side metal fitting arrangement hole H1 and prevents water from entering the housing, and has a flange portion 11 and an insertion portion 12. Configured.
The flange portion 11 is a substantially rectangular flat plate, and a front through-hole portion 11a that is cut out in a substantially rectangular shape (upward) is formed at the center of the lower end side.

The insertion part 12 is a substantially housing-like part, and includes the insertion part side walls 12A and 12A, the insertion part top wall 12B, and the insertion part rear wall 12C.
The insertion portion side walls 12A and 12A are wall bodies that extend vertically toward the rear from the peripheral end sides that run in the up-down direction and are spaced apart in the opening direction of the front through-hole 11a.
Moreover, the insertion part top | upper surface wall 12B is extended perpendicularly | vertically toward the back from the peripheral edge side formed so that the upper end of both peripheral edge sides which run in the up-down direction might be spaced apart in the front direction of the front through-hole 11a. It is a wall.

And 12 C of insertion part rear surface walls were arrange | positioned so that the substantially reverse U-shaped opening formed in the back side edge of 12 A of insertion part side walls 12A and 12A and the insertion part top surface wall may be covered. It is a wall.
A rear through hole 12a that is cut out in a substantially rectangular shape (upward) is formed at the center of the lower end side of the rear wall 12C of the insertion portion.

The external size of the insertion portion 12 is configured to be substantially the same as the size of the front-side bonded hardware arrangement hole H1.
That is, the insertion portion 12 of the front side metal fitting arrangement hole H1 is configured to be fitted.
Thereby, in the state which covered the stair-joint waterproofing member 1 in the main-body part 31 which comprises the joining metal fitting 3, as shown to the arrow X of FIG. 6, the insertion part 12 is made into the front side joining hardware installation hole H1. When press-fitted into the staircase, the staircase joint waterproofing member 1 can be attached to the stairway parting material 2 as shown in FIG.

That is, the staircase joint waterproofing hardware 1 is attached to the staircase parting material 2 in a state where the staircase joint portion 32 projects forward from the front through-hole 11a and the beam joint portion 33 projects rearward from the rear through-hole 12a.
Then, in this state, the stair joint waterproof member 1 is attached to the parting wall 22 of the stair parting material 2 by the bolt V4, and the sealing material G is disposed in the front through hole part 11a.

The opening area of the front through-hole portion 11a is such that the rear wall 12C of the insertion portion is formed in a substantially inverted U shape formed at the rear side edges of the insertion portion side walls 12A and 12A and the insertion portion top wall 12C. You may be comprised so that it may become smaller than the opening area of opening.
That is, the insertion portion side walls 12A and 12A and the insertion portion top wall 12C may extend from the outer side of the peripheral end side of the front through-hole portion 11a.
If comprised in this way, an opening area can be narrowed.

Next, the waterproof effect of the staircase joint waterproof member 1 will be described with reference to FIGS. 8 and 9.
Moisture such as rainwater that has entered (injected) from the Y1 direction in FIG. 9 is temporarily stopped by a sealing material G inserted between the upper end of the staircase and the boundary 21.
In addition, the moisture that has passed through the sealing material G and the moisture that has blown in from the transom panel T2 are inserted into the flange portion 11 (and the front through-hole 11a) constituting the parting wall 22 and the staircase junction waterproofing member 1. Water is further stopped by the sealing material G).

Further, the moisture that has also passed through the flange portion 11 (and the sealing material G inserted in the front through hole 11a) is inserted into the insertion portion side walls 12A, 12A and the inner portion constituting the insertion portion 12 of the staircase joint waterproof member 1. It collides with the insertion portion top wall 12B and the insertion portion rear wall 12C, and is prevented from further entering the interior.
That is, it is possible to effectively prevent moisture from diffusing inside the housing.
The moisture blown into the interior from the rear through-hole 12a formed in the rear wall 12C of the insertion portion is prevented from blowing further into the interior by the draining member 24, and both end portions in the frontage direction of the staircase parting material 2 And is discharged downward from here (see routes Z1 and Z2).

As described above, according to the joint unit S according to the present embodiment, the joint hardware 3 can be taken out from the floor beam T1 of the deck P2 to the front side of the staircase part 2 (the staircase installation side).
And since the metal joint 3 (the stair joint portion 32) is taken out from the front side metal joint arrangement hole H1 formed in the parting wall 22 of the staircase parting material 2, the waterproofing of the front side metal joint arrangement hole H1 is performed. For this purpose, a staircase joint waterproofing member 1 is provided.
Thereby, since many waterproof structures can be constructed | assembled, the said structure can be effectively applied to an outdoor staircase etc., for example.

S Junction Unit 1 Staircase Junction Waterproof Member 11 Flange 11a Front Through Hole 12 Insertion 12A Insertion Side Wall 12B Insertion Top Wall 12C Insertion Rear Wall
12a Rear through-hole 2 Staircase part 21 Boundary part 21A Boundary wall 21B Bottom wall 21C Front side wall 21D Rear side wall 22 Parting wall 23 Downward placement wall 24 Draining member H Joint fitting arrangement hole H1 Front side joint fitting arrangement hole H2 Bottom side Joint fitting arrangement hole 3 Joint fitting 31 Main body 32 Stair joint 33 Beam joint 4 Auxiliary joint G Sealing material P1 Door P2 Deck P3 Garage foundation P4 Stair porch R Outdoor stair T1 Floor beam T2 Cross panel V1, V2, V3 Bolt hole V4 Bolt

Claims (6)

In the waterproof structure at the connecting part between the upper end of the stairs and the floor of the upper floor,
And the floor beams to be the floor of the skeleton,
A wall parting provided in stairs side of the floor,
From the floor beam , penetrating the parting wall , brought out to the upper end of the staircase, and a joint metal fitting connecting the upper end of the staircase and the floor beam ,
Draining member;
A staircase junction waterproofing member ,
The parting wall is formed with a front side metal fitting arrangement hole through which the metal fitting passes,
At the top of the parting wall, along with the boundary portion is disposed, from the boundary portion, the draining member is disposed extending downward to the rear of the front side joining hardware arrangement設孔,
A waterproof structure characterized in that the staircase junction waterproofing member is disposed opposite to the draining member while being disposed in the front-side joint fitting disposing hole. A housing-like insertion portion is formed that fits in the front side fitting fitting arrangement hole and covers at least a part of the front side fitting arrangement hole on the floor beam side. The waterproof structure according to claim 1. The staircase junction waterproofing member is configured to include the housing-like insertion part and a flange-like flange part extending around the opening of the insertion part,
The insertion part is fitted into the front side metal fitting arrangement hole and protrudes to the floor beam side,
The flange portion, the waterproof structure according to 請 Motomeko 2 you characterized in that it is mounted are stacked in the stepped side surface of the parting wall. The said interpolator, rear through-hole into which the joining hardware is Ru are inserted are formed,
The waterproof structure according to claim 2 , wherein the draining member is disposed to face the rear through hole. The waterproof structure according to any one of claims 2 to 4, wherein a sealing material is disposed in a gap between the opening of the insertion portion and the metal joint. The waterproof structure according to claim 1, wherein the staircase is an outdoor staircase installed outdoors.

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