JP2010043430A - Roof structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roof structure of a pent house capable of clearing the restrictions of oblique line and height easily, preventing the formation of protruding parts to keep beautiful appearance of the building, and forming a well-lighted indoor space effectively. <P>SOLUTION: This roof structure covering an upper part of an opening for going up and down formed on a rooftop part has a first inclined roof surface and a second inclined roof surface having their vertical cross sections including the direction for going up and down of stairs for going up and down formed into a substantially triangular shape. A trap door having a hinge in an upper end part of the door is provided on the first roof surface. This door may cover substantially whole surface of the first roof surface. A window may be provided on the door. Preferably, a handle allowing a user to grip from the middle of the stairs for going up and down while the door is closed on an indoor side of the door and grip from the rooftop side while the door is lifted up is provided. Preferably, a pitch of the second roof surface is substantially equal to a pitch of the stairs for going up and down. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a roof structure provided so as to mainly cover an opening for raising and lowering formed on a rooftop surface of a building, and in particular, a longitudinal section including an ascending / descending direction of an ascending / descending step to the roof is substantially triangular. The present invention relates to a roof structure having two inclined roof surfaces.

Conventionally, when a staircase for ascending and descending from the indoor is provided on the rooftop part of the building, a penthouse has been provided to cover the area including the opening of the rooftop floor surface for installing the staircase, and the stairs have been fully raised It was common to have a landing in the door, and a vertical wall facing the landing and a swing door or sliding door for entering and exiting the rooftop. Therefore, this portion is generally a rectangular parallelepiped penthouse.
Also, the roof on the staircase side of the penthouse may be provided with a slope so as to easily clear the oblique line restriction stipulated by laws and regulations, and the slope is 1: 0.6 or 1: 1 corresponding to the oblique line restriction. Generally, it was set to a value such as .25.
JP 2005-194875

  In such a conventional type of penthouse, the roof of the penthouse can be lowered above the stairs as long as it can be lifted and lowered, but at the entrance / exit position, clearance is required above the person standing at the landing. Therefore, there was a limit to keeping the roof on the entrance side low. Therefore, it is difficult for the entrance / exit side to clear the oblique line restriction (in other words, the height allowed for oblique line restriction is generally low on the north side and high on the south side, so there are restrictions on the positions of stairs and entrances to satisfy this condition. ) And the problem that it is difficult to clear the legal height limit because the absolute height cannot be lowered sufficiently. In addition, there is a problem that the protrusion from the roof is conspicuous and the appearance is not desirable in design. Furthermore, since the entrance / exit from which lighting is obtained is set on a vertical wall surface, there is also a problem that the efficiency of lighting is not good.

  The present invention solves the above-mentioned problems of the prior art, easily clears the oblique line restriction and the height restriction, has a small protrusion from the roof, makes it easy to maintain the aesthetics of the building, and can effectively illuminate the room indoors. The purpose is to provide a structure (penthouse).

  In order to solve the above-mentioned problems, the roof structure covers the lift opening formed on the rooftop surface of the building, and the first and first cross sections including the vertical direction of the lift stairs are substantially triangular. A roof structure having two inclined roof surfaces and a flip-up type door having a hinge at the upper end of the door on the first roof surface is proposed.

  In this specification, the roof is used in the meaning of a flat floor surface that can also be used by a person and serves as the top floor roof. The opening for raising and lowering is an opening provided in the roof slab for installing a stairway from the room on the top floor to the roof. The longitudinal section of the roof structure including the ascending / descending direction of the stairs for raising / lowering means, for example, the section shown in FIG. 1 attached, and is a longitudinal section in a direction perpendicular to the longitudinal direction of the step plates constituting the stairs. . In a flip-up type door having a hinge at the upper end portion of the door, the upper end portion of the door is not limited to the uppermost portion in the strict sense, but indicates the vicinity of the upper end portion. In addition, the hinge refers to a mechanism that opens and closes by rotating the door, and includes a structure in which the door rotates around an actually existing shaft such as a hinge, and a mechanism that rotates around a virtual axis by the hinge mechanism. .

  Since the vertical cross section has a substantially triangular shape and an inclined entrance / exit is provided on one inclined surface, even if the height of the roof structure is kept low, by opening the door provided at the entrance / exit in a state of rising to the middle of the stairs, You can go up and down smoothly without getting a head. Furthermore, since it is a flip-up type door, even if the door is opened, it is possible to keep the door covering the opening by adjusting the degree of opening, so that rain does not easily enter the room. Moreover, if an assist mechanism or a damper is appropriately provided on the flip-up type door, the door can be opened and closed with a light force.

  The door may have a lighting surface. Since the door has a lighting surface and is provided on the inclined surface, it is possible to efficiently perform the lighting and to brighten the staircase and the lower floor. The lighting surface may be formed on a part of the door or may be formed on the substantially entire surface of the door.

  It is preferable that a handle is provided on the indoor side of the door that can be gripped from the middle of the ascending / descending steps when the door is closed, and from the roof when the door is flipped up. When ascending the stairs, hold the handle of the closed door, push up the door gradually while ascending the stairs, and hold the handle until the door is fully open at the position where you climbed the stairs. It is desirable to be able to keep it. If the hand is delivered, the position of the handle may be above the opening.

  The slope of the second roof surface is preferably substantially equal to the slope of the elevating stairs. With such a structure, it is possible to secure a certain clearance above the head when the stairs are raised and lowered, and to minimize the volume of the roof protruding by the roof structure.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the description is made to assist the understanding of the invention, and the invention is not limited to the embodiments described below. It is self-evident that there is nothing.

  FIG. 1 is a vertical sectional view including an up-down direction of a staircase according to an embodiment of a roof structure 1 according to the present invention. For reference, Fig. 1 is based on the assumption that a flat roof house is constructed by attaching an ALC outer wall panel and a floor panel to a shaft composed by rigidly joining steel prisms and beams made of H steel. It is drawn. The staircase 40 that goes up and down on the rooftop 30 is a straight staircase, and is composed of a pair of sagittal girders and a step board that is a combination of a grating-like step board. The slope of the stairs is 45 degrees. A beam is arranged so as to surround the staircase 40 (opening on the rooftop surface), and the roof structure 1 according to the present invention is placed on the staircase side of the flange of the beam.

According to the cross section of FIG. 1, the roof structure 1 has a first inclined roof surface 10 and a second inclined roof surface 20, and has a triangular tent shape with both side surfaces rising vertically. The material is, for example, plated steel. The indoor side has a layer structure of heat insulating material, gypsum board, and vinyl cloth. The height of the top portion of the roof structure is in the range of about 1000 mm to 1500 mm, preferably around 1300 mm from the rooftop surface, from the viewpoints of entering and exiting the person shown, ease of opening and closing the door, and the like.
The first inclined roof surface 10 is provided with an opening serving as a doorway, and a flip-up type door 12 whose top is supported by a hinge 14 is attached to the opening.

  The inclination angle of the second inclined roof surface 20 is substantially the same as the inclination of the stairs 40. The ceiling on the indoor side of the roof structure 1 (Penthouse) has a gradient equal to the gradient of the inclined surface, and is finished to a height that cannot be used by a person having a general height when moving up and down.

In the illustrated embodiment, both the door frame and the door body are made of stainless steel, but may be a general material used for a sash such as aluminum and the material is not particularly limited.
Standing pieces are arranged along the opening of the door frame, and a packing material is attached to the upper end surface of the standing pieces. Moreover, the outer edge part of the collar of the door main body has a hanging piece bent downward. In the state where the door is closed, the watertightness is maintained by the engagement between the standing piece and the hanging piece and the contact between the packing material and the bottom surface of the collar.
FIG. 2 is an elevation view of the roof structure shown in FIG. As shown in FIG. 2, a transparent glass plate 16 is fitted in the door 12. The glass may be a hazy glass or the like. It is preferable to use netted glass, laminated glass, tempered glass, or the like so that glass fragments do not scatter in the event of a fire or when an object falls from the sky. Moreover, when heat insulation performance is requested | required, a point with a desirable pair glass is the same as that of a normal window glass.

  As shown in FIG. 3, the door is fixed to the top of the penthouse body by a hinge 14 (see FIG. 1) attached to the upper frame of the door frame and the upper arm of the door body, and the hinge 14 is pivoted. It is a flip-up type that opens and closes as a shaft. A hydraulic damper for reducing the load of opening and closing work is attached between the left and right vertical frames of the door frame and the vertical frame of the door body. A handle for opening and closing work from the indoor side is attached to a position near the lower frame between the left and right vertical fences. In a state where the door body is flipped up, a height is secured so that a person who has climbed the stairs can pass under the door in an upright state. Even when the door is flipped up, the opening serving as the doorway is covered by the door when looking down from above.

  The operation when entering and leaving the roof is as follows. That is, when going out of the roof, the stairs are climbed, and the lock provided on the door is released when the stairs reach several steps below the top. Next, a hand is put on the handle provided inside the door, and the stairs are further lifted up to the rooftop while lifting the door. Also, when entering the room, if the door is closed, open the door by placing your hand on the handle on the outside, and if you enter the room, touch the handle provided on the inside of the previous door. And go down the stairs while pulling down the door. Then, when it reaches about several steps below the top level, the door is completely closed and locked.

  As is clear from the above description, in the roof structure according to the present invention, the roof structure is a triangular tent shape, a door is installed on the first inclined roof surface on the side where the stairs are fully climbed, and the stairs are raised. Because it is configured so that it can be opened and closed at a midway position, not at a closed position, it is not necessary to secure a ceiling height that allows people to stand up at the position of the rising stairs inside the roof structure Because the top position is not the position where you climbed up the stairs, it does not require much height. Also, if the slope of the second inclined roof surface located above the stairs is equal to the slope of the stairs, the clearance between the ceiling surface and the person's head will be kept constant during ascent and descent. The height of the roof structure can be kept low. Therefore, it becomes easy to clear the oblique line restriction and the height restriction, and the protrusion from the roof can be made small to make it easy to maintain the beauty of the building.

  Even when the door is flipped up, the opening serving as the doorway is covered by the door when looking down from above, so that rain that falls vertically can enter the room from the opening even when the door is opened. There is no. Since the door fitted with the glass plate is installed on the first inclined roof surface, the lighting efficiency is good and the staircase and the lower floor can be brightened. Furthermore, since the staircase is composed of a pair of spar girders and a step board composed of a grating-like step board, the lower floor can be further brightened.

Vertical sectional view including the stair ascending / descending direction of the roof structure according to the embodiment Elevated view of the roof structure according to the embodiment Perspective view (photo) of the roof structure according to the embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Roof structure 10 which concerns on this invention 1st inclined roof surface 12 Door 14 Hinge 16 Window 20 2nd inclined roof surface 30 Roof slab 40 Stairway 50 Side surface of roof structure

Claims (4)

  A roof structure covering an opening for raising and lowering formed on a rooftop surface of a building, and having first and second inclined roof surfaces so that a longitudinal section including the raising and lowering direction of the raising and lowering stairs is substantially triangular. The roof structure which provided the flip-up type door which has a hinge in the upper end part of a door on the 1st roof surface.   The roof structure according to claim 1, wherein the door has a lighting surface.   The handle according to any one of claims 1 to 3, further comprising a handle that can be gripped from the middle of the ascending / descending steps when the door is closed, and from the roof when the door is flipped up. The described roof structure.   The roof structure according to any one of claims 1 to 4, wherein a slope of the second roof surface is substantially equal to a slope of the elevating stairs.

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