JP4624843B2 - Stair, mounting method for its riser plate and stair component - Google Patents
Stair, mounting method for its riser plate and stair component Download PDFInfo
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この発明は、例えば一般住宅の木質製階段などに好適に採用される階段、その蹴込板取付方法および階段構成部材に関する。 The present invention relates to a staircase suitably used for, for example, a wooden staircase of a general house, a method for attaching a kick plate, and a stair component member.
戸建て住宅などの木質製屋内階段は通常、間隔をおいて平行に配置される一対の側板と、一対の側板間に長さ方向に沿って所定の間隔おきに水平に配置される複数の段板と、各段板の下面前部に下方に延びるように垂直に配置される複数の蹴込板と、を備えている。 A wooden indoor staircase such as a detached house usually has a pair of side plates arranged in parallel at intervals, and a plurality of step plates arranged horizontally at predetermined intervals along the length direction between the pair of side plates. And a plurality of kick plates that are vertically arranged to extend downward to the front part of the lower surface of each step plate.
このような階段は例えば下記特許文献１に示すように、一対の側板における内側面に、段板取付位置に対応して、階段裏面側において後方に開放する段板取付溝が水平方向に沿って形成されるとともに、蹴込板取付位置に対応して、階段裏面側において下方に開放する蹴込板取付溝が垂直方向に沿って形成されている。そして段板は、その両側縁部が両側板間において対応する両段板取付溝にそれぞれ挿入されて組み付けられるとともに、蹴込板は、その両側縁部が両側板間において対応する両蹴込板取付溝にそれぞれ挿入されて組み付けられるものである。
上記従来の階段は、蹴込板を側板の蹴込板取付溝に下方から挿入して組み付けるものであるが、一対の側板を家屋構造体に固定した状態では、最下段の蹴込板取付溝の下端開放部（蹴込板挿入部）が設置面（床面）に対応して配置され、蹴込板取付溝の下端開放部が床面によって塞がれてしまう。このため、一対の側板を家屋構造体に固定した後は、最下段の蹴込板を取り付けることが困難である。 The above-mentioned conventional staircase is to insert the kick plate into the kick plate mounting groove of the side plate from below and assemble it, but with the pair of side plates fixed to the house structure, the lower end of the lowermost kick plate mounting groove is opened. The portion (the kick plate insertion portion) is arranged corresponding to the installation surface (floor surface), and the lower end opening portion of the kick plate mounting groove is blocked by the floor surface. For this reason, after fixing a pair of side board to a house structure, it is difficult to attach the bottom kick board.
そこで従来においては例えば、一対の側板を組み付ける前に、予め一対の側板に最下段の蹴込板を取り付けておき、その後、一対の側板を家屋構造体に固定する組付方法や、一対の側板をその上端部を家屋構造体に回転自在に仮止め固定しておき、一対の側板を下端部を持ち上げるように回転させて最下段の蹴込板取付溝の下端を開放して蹴込板を挿入配置した後、一対の側板を下方に回転させて組付状態に戻してから家屋構造体に本固定する組付方法などが採用されている。 Therefore, in the prior art, for example, before assembling the pair of side plates, a bottom kick plate is attached to the pair of side plates in advance, and then the assembly method for fixing the pair of side plates to the house structure or the pair of side plates The upper end of the house structure is temporarily fixed and fixed, and the pair of side plates are rotated so that the lower end is lifted to open the lower end of the lowermost kick plate mounting groove and the kick plate is inserted and arranged. Thereafter, an assembly method is adopted in which the pair of side plates are rotated downward to return to the assembled state and then fixed to the house structure.
しかしながら、前者のように蹴込板を先付けする方法では、組付手順が複雑になるばかりか、蹴込板付きの側板は嵩高く大型で、取扱が面倒になり、その取扱に二人以上の作業者が必要となることもあり、組立作業が困難であるという問題があった。 However, the method of attaching the kick plate as in the former not only complicates the assembly procedure, but the side plate with the kick plate is bulky and large, making it difficult to handle, and handling two or more workers. However, there is a problem that assembly work is difficult.
また後者のように側板仮止め状態で蹴込板を取り付ける方法では、一対の側板を仮固定した後、一対の側板を回転させて持ち上げたり、その持ち上げ状態で蹴込板を取り付けるなどの面倒な操作が必要であり、さらに階段を持ち上げる者と、蹴込板を挿入する者との二人以上の作業者が必要になり、組立作業が困難であるという問題があった。 In the latter case, the method of attaching the kick plate with the side plate temporarily fixed is a troublesome operation such as temporarily fixing the pair of side plates and then rotating the pair of side plates to lift or attaching the kick plate in the lifted state. There is a problem that two or more workers, a person who lifts the stairs and a person who inserts the kick plate, are necessary, and the assembly work is difficult.
この発明は、上記従来技術の問題を解消し、最下段の蹴込板を簡単に組み付けることができる階段、その蹴込板取付方法および階段構成部材を提供することを目的とする。 An object of the present invention is to solve the above-described problems of the prior art, and to provide a stair that can easily assemble the lowermost kick plate, a method for attaching the kick plate, and a stair component member.
上記目的を達成するため、本発明は以下の構成を要旨とする。 In order to achieve the above object, the gist of the present invention is as follows.
［１］ 平行に配置される一対の側板の内側面に、階段裏面側において下方に向けて開放する垂直な蹴込板取付溝がそれぞれ形成されるとともに、両蹴込板取付溝に、蹴込板の両側縁部が収容配置される階段の蹴込板取付方法であって、
前記一対の側板の内側面における両蹴込板取付溝の後方に、前側が前記蹴込板取付溝に連通し、かつ後側が階段裏面側において後方に向けて開放する作業溝をそれぞれ形成しておき、
前記蹴込板を前記一対の側板に取り付けるに際し、階段裏面側における後方から前記蹴込板の両側縁部を上記両作業溝を介して両蹴込板取付溝までそれぞれ導いて、両蹴込板取付溝内にそれぞれ収容するようにしたことを特徴とする階段の蹴込板取付方法。
[1] Vertical kick plate mounting grooves that open downward on the back side of the staircase are formed on the inner side surfaces of the pair of side plates that are arranged in parallel, and both kick plate mounting grooves are formed on both sides of the kick plates. It is a method of attaching a kick plate of a staircase in which an edge is accommodated and arranged,
A working groove is formed behind the two kick plate mounting grooves on the inner side surfaces of the pair of side plates, the front side communicates with the kick plate mounting groove, and the rear side opens rearward on the back side of the staircase,
When attaching the kick plates to the pair of side plates, guide both side edges of the kick plates from the rear on the back side of the staircase to the two kick plate mounting grooves through the both working grooves, respectively. A method of attaching a kick board for a staircase, characterized in that each is accommodated.
［１ａ］ 前記一対の側板の内側面に、階段裏面側において後方に向けて開放する水平な段板取付溝がそれぞれ形成されるとともに、両段板取付溝に、段板の両側縁部が収容配置される前項１に記載の階段の蹴込板取付方法。
[1a] On the inner side surfaces of the pair of side plates, horizontal step plate mounting grooves that open rearward on the back side of the staircase are formed, and both side edges of the step plates are accommodated in both step plate mounting grooves. The method of attaching a kick board for a stair as described in
［１ｂ］ 前記段板取付溝は、一対の側板に所定の間隔おきに複数形成される前項１ａに記載の階段の段板取付方法。 [1b] The staircase plate mounting method according to 1a, wherein a plurality of the step plate mounting grooves are formed at predetermined intervals on the pair of side plates.
［１ｃ］ 前記段板の前端部下側に、前記蹴込板取付溝が下方に延びるように形成される前項１ａに記載の段板の蹴込板取付方法。 [1c] The stepping plate mounting method for a stepped plate according to the preceding item 1a, wherein the stepping plate mounting groove is formed below the front end of the stepped plate so as to extend downward.
［１ｄ］ 前記蹴込板取付溝および作業溝は、階段施工現場に搬入する前に予め加工される前項１に記載の階段の蹴込板取付方法。
[1d] The method for attaching a kick plate for a staircase according to
［１ｅ］ 前記一対の側板は、階段施工現場に搬入する前に予め加工されたプレカット部材により構成される前項１に記載の階段の蹴込板取付方法。
[1e] The stair kick plate mounting method according to the preceding
［１ｆ］ 前記一対の側板は、その少なくとも一部を、階段施工現場に搬入した後に加工するものとした前項１に記載の階段の蹴込板取付方法。
[1f] The stair kick plate mounting method according to the preceding
［２］ 前記蹴込板取付溝は、一対の側板に所定の間隔おきに複数形成されるとともに、
前記複数の蹴込板取付溝のうち、最下段の蹴込板取付溝に対応して、前記作業溝が形成される前項１に記載の階段の蹴込板取付方法。
[2] A plurality of the kick plate mounting grooves are formed at predetermined intervals on the pair of side plates,
The staircase kick plate mounting method according to
［２ａ］ 最下段の蹴込板取付溝の下端開放部は、階段施工後の状態において床面などの設置面によって閉塞される前項２に記載の階段の蹴込板取付方法。
[2a] The stair kick plate mounting method according to
［２ｂ］ 前記側板の下端部（前端部）に設置面（床面）に設置される水平設置部が設けられる前項２に記載の階段の蹴込板取付方法。
[2b] The stair kick plate mounting method according to the
［２ｃ］ 前記蹴込板の裏面側下端に、その下端縁に沿って桟部材が取り付けられる前項２に記載の階段の蹴込板取付方法。
[2c] The stair kick plate attaching method according to the preceding
［３］ 前記作業溝は、前記蹴込板取付溝と連通する前側連通縁部と、後方に向けて開放する後側開放縁部と、前記前側連通縁部の上端および後側開放縁部の上端との間を結ぶ上側壁部とを有し、前記前側連通縁部は前記蹴込板取付溝のほぼ全域に対応して設けられるとともに、前記後側開放縁部の上端位置が前記前側連通縁部の上端位置に対し低位に設定され、
前記上側壁部は前記前側連通縁部の上端位置から後方に向けて斜め下向きに傾斜するよう配置される前項１または２に記載の階段の蹴込板取付方法。
[3] The working groove includes a front communication edge that communicates with the kick plate mounting groove, a rear open edge that opens rearward, an upper end of the front communication edge, and an upper end of the rear open edge. And the front communication edge is provided substantially corresponding to the entire area of the kick plate mounting groove, and the upper end position of the rear open edge is the front communication edge. Is set lower than the top position of
The staircase kick plate mounting method according to
［３ａ］ 前記上側壁の垂直線に対する角度（θ）が３０〜６０°に設定される前項３に記載の階段の蹴込板取付方法。
[3a] The method of attaching the stair kick plate according to
［３ｂ］ 前記上側壁は、直線状に形成される前項３に記載の階段の蹴込板取付方法。
[3b] The stair kick plate mounting method according to
［３ｃ］ 作業溝は、階段裏面側において下向きに開放する下側開放縁部を有する前項３に記載の階段の蹴込板取付方法。
[3c] The stair kick plate mounting method according to the preceding
［４］ 前記蹴込板を前記蹴込板取付溝に収容するに際し、前記蹴込板を略水平に配置した状態で前記蹴込板の両側縁部を両作業溝にその後側開放部から挿入した後、その蹴込板を挿入先端側を上方に持ち上げるように回転させつつ両作業溝の前方に移動させることにより、前記蹴込板の両側縁部を前記両蹴込板取付溝まで導くようにした前項１〜３のいずれか１項に記載の階段の蹴込板取付方法。
[4] When the kick plate is accommodated in the kick plate mounting groove, the both side edges of the kick plate are inserted into both working grooves from the rear opening portion in a state where the kick plate is disposed substantially horizontally. In the preceding
［５］ 前記蹴込板取付溝の深さに対し、前記作業溝の深さが深く形成される前項１〜４のいずれか１項に記載の階段の蹴込板取付方法。
[5] The stepped-kick plate mounting method according to any one of
［５ａ］ 前記蹴込板取付溝の底面と前記作業溝の底面との間に段差が形成される前項５に記載の階段の蹴込板取付方法。 [5a] The stepped-kick plate mounting method according to item 5, wherein a step is formed between the bottom surface of the kick plate mounting groove and the bottom surface of the working groove.
［５ｂ］ 前記作業溝の底面が、前記蹴込板取付溝に近づくに従って、次第に浅くなるような傾斜面に形成される前項５に記載の階段の蹴込板取付方法。 [5b] The stepped-kick plate mounting method according to item 5, wherein the bottom surface of the working groove is formed on an inclined surface that gradually becomes shallower as it approaches the kick-plate mounting groove.
［５ｃ］ 前記蹴込板取付溝の底面と前記作業溝の底面との間に段差が形成されない前項５ｂに記載の階段の蹴込板取付方法。 [5c] The stepping plate mounting method for a staircase according to item 5b, wherein no step is formed between the bottom surface of the kicking plate mounting groove and the bottom surface of the working groove.
［５ｄ］ 前記蹴込板取付溝の深さに対し、前記作業溝の深さがほぼ等しく形成される前項１〜４のいずれか１項に記載の階段の蹴込板取付方法。
[5d] The stepped-kick plate mounting method according to any one of the preceding
［５ｅ］ 途中で方向が転換されない直階段に適用される前項１〜４のいずれか１項に記載の階段の蹴込板取付方法。
[5e] The stair kick plate mounting method according to any one of the preceding
［５ｆ］ 途中で方向が転換される回り階段に適用される前項１〜４のいずれか１項に記載の階段の蹴込板取付方法。
[5f] The method of attaching the stair kick plate according to any one of the preceding
［５ｇ］ 途中で方向が１８０°転換される折返し階段に適用される前項１〜４のいずれか１項に記載の階段の蹴込板取付方法。
[5g] The method of attaching a kick plate for a staircase according to any one of the preceding
［５ｈ］ 途中で方向が９０°転換されるかね折れ階段に適用される前項１〜４のいずれか１項に記載の階段の蹴込板取付方法。
[5h] The method for attaching a stair kick plate according to any one of the preceding
［６］ 内側面に下方に向けて開放する垂直な蹴込板取付溝がそれぞれ形成され、かつ平行に配置される一対の側板を具備する階段構成部材であって、
前記一対の側板の内側面における両蹴込板取付溝の後方に、前側が前記蹴込板取付溝に連通し、かつ後側が階段裏面側において後方に向けて開放する作業溝がそれぞれ形成され、
階段裏面側における後方から蹴込板の両側縁部が上記両作業溝を介して両蹴込板取付溝までそれぞれ導かれて、両蹴込板取付溝内にそれぞれ収容配置されるよう構成されたことを特徴とする階段構成部材。
[6] A staircase constituting member having a pair of side plates each formed with a vertical kick plate mounting groove that opens downward on the inner side surface and arranged in parallel,
Working grooves are formed at the rear of both kick plate mounting grooves on the inner side surfaces of the pair of side plates, the front side communicates with the kick plate mounting grooves, and the rear side opens rearward on the back side of the staircase,
Both sides of the kick plate are guided from the rear on the back side of the staircase to the two kick plate mounting grooves through the both working grooves, and are respectively accommodated and arranged in the two kick plate mounting grooves. A staircase component.
［７］ 平行に配置される一対の側板の内側面に、階段裏面側において下方に向けて開放する垂直な蹴込板取付溝がそれぞれ形成されるとともに、両蹴込板取付溝に、蹴込板の両側縁部が収容配置される階段であって、
前記一対の側板の内側面における両蹴込板取付溝の後方に、階段裏面側における後方から前記蹴込板の両側縁部を挿入して両蹴込板取付溝までそれぞれ導くための作業溝がそれぞれ形成され、
前記作業溝は、前側が前記蹴込板取付溝に連通し、かつ後側が階段裏面側において後方に向けて開放するよう形成されることを特徴とする階段。
[7] A vertical kick plate mounting groove that opens downward on the back side of the staircase is formed on the inner side surfaces of the pair of side plates arranged in parallel, and both kick plate mounting grooves are formed on both sides of the kick plate. A staircase in which an edge is accommodated and arranged,
Working grooves for inserting both side edges of the kick plate from the rear on the back side of the staircase and guiding them to the two kick plate mounting grooves are formed behind the two kick plate mounting grooves on the inner side surfaces of the pair of side plates, respectively. ,
The staircase characterized in that the working groove is formed such that a front side communicates with the kick plate mounting groove and a rear side opens rearward on the back side of the staircase.
［８］ 前項１〜５のいずれか１項に記載された方法によって組み付けられたことを特徴とする階段の蹴込板取付構造。 [8] A stair kick plate mounting structure assembled by the method described in any one of 1 to 5 above.
［９］ 前項８項に記載された構造が採用されたことを特徴とする階段。 [9] A staircase characterized in that the structure described in item 8 above is adopted.
上記発明［１］にかかる階段の蹴込板取付方法によれば、一対の側板における蹴込板取付溝の後方に、蹴込板取付溝に連通し、かつ後方に向けて開放する作業溝を形成し、この作業溝を介して、蹴込板を一対の側板における後側から差し込んで取り付けるようにしている。このため一対の側板を家屋構造体などに固定した後、後付けで最下段の蹴込板を簡単に組み付けることができる。 According to the staircase kick plate mounting method according to the invention [1], a work groove that is communicated with the kick plate mounting groove and opened rearward is formed behind the kick plate mounting groove in the pair of side plates. The kick plate is inserted and attached from the rear side of the pair of side plates through the working groove. For this reason, after fixing a pair of side board to a house structure etc., the lowermost kick board can be easily assembled | attached by retrofitting.
上記発明［２］にかかる階段の蹴込板取付方法によれば、上記の効果を確実に得ることができる。 According to the stair kick plate mounting method according to the invention [2], the above-described effects can be obtained with certainty.
上記発明［３］［４］にかかる階段の蹴込板取付方法によれば、最下段の蹴込板を、より一層簡単かつ確実に組み付けることができる。 According to the staircase kick plate mounting method according to the above inventions [3] and [4], the bottom kick plate can be more easily and reliably assembled.
上記発明［５］にかかる階段の蹴込板取付方法によれば、蹴込板の作業溝への挿入作業をスムーズに行うことができ、ひいては蹴込板の組付作業を効率良くスムーズに行うことができる。 According to the stepped-kick plate mounting method according to the above invention [5], it is possible to smoothly perform the work of inserting the kicked plate into the working groove, and as a result, the assembly work of the kicked plate can be performed efficiently and smoothly. .
上記発明［６］によれば、上記と同様の作用効果を奏する階段構成部材を提供することができる。 According to the invention [6], it is possible to provide a stair component member that exhibits the same effects as described above.
上記発明［７］によれば、上記と同様の作用効果を奏する階段を提供することができる。 According to the said invention [7], the staircase with the same effect as the above can be provided.
図１はこの発明の実施形態である蹴込板取付方法によって組み立てられた階段を示す斜視図、図２はその階段の側面断面図、図３はその階段に適用された側板（１）を内側面側から見た状態での斜視図である。これらの図に示すようにこの階段は、間隔をおいて平行に配置される一対の側板（１）（１）と、一対の側板間に長さ方向に沿って所定の間隔おきに水平に配置される複数の段板（２）と、各段板（２）の下面前部に下方に延びるように垂直に配置される複数の蹴込板（３）と、を備えている。 FIG. 1 is a perspective view showing a staircase assembled by a kick plate mounting method according to an embodiment of the present invention, FIG. 2 is a side sectional view of the staircase, and FIG. 3 is an inner side view of a side plate (1) applied to the staircase. It is a perspective view in the state seen from the side. As shown in these drawings, the stairs are horizontally arranged at predetermined intervals along the length direction between a pair of side plates (1) and (1) arranged in parallel with a distance therebetween. A plurality of step plates (2), and a plurality of kick plates (3) arranged vertically so as to extend downward in front of the lower surface of each step plate (2).
両側板（１）には、その前端部（下端部）の下面側に、床面（Ｆ）に設置される水平設置部（１１）が設けられている。 The both side plates (1) are provided with a horizontal installation portion (11) installed on the floor surface (F) on the lower surface side of the front end portion (lower end portion) thereof.
また両側板（１）の内側面には、各段板（２）の取付位置に対応して、所定の間隔おきに複数の段板取付溝（１２）が水平方向に沿って形成されている。各段板取付溝（１２）は、階段裏面側において後端側が後方に向けて開放されて、その後端開放部から段板取付溝（１２）内に段板（２）の両側縁部を挿入できるよう構成されている。 A plurality of step plate mounting grooves (12) are formed along the horizontal direction at predetermined intervals on the inner surface of the side plates (1) corresponding to the mounting position of each step plate (2). . Each step plate mounting groove (12) has a rear end opened rearward on the back side of the staircase, and both side edges of the step plate (2) are inserted into the step plate mounting groove (12) from the rear end opening portion. It is configured to be able to.
さらに側板（１）の内側面には、蹴込板（３）の取付位置に対応して、所定の間隔おきに複数の蹴込板取付溝（１３）が垂直方向に沿って形成されている。各蹴込板取付溝（１３）は、各段板取付溝（１２）の先端部から下方に向けて延びるように配置されて、その上端が段板取付溝（１２）に連通されるとともに、下端が階段裏面側において下方に向けて開放されている。そして蹴込板取付溝（１３）内にその下端開放部から蹴込板（３）の両側縁部を挿入できるよう構成されている。なお蹴込板取付溝（１３）のうち最下段（１段目）に配置される蹴込板取付溝（１３）は、その下端開放部が側板前端部の水平設置部（１１）において下方に開放されている。 Further, on the inner side surface of the side plate (1), a plurality of kick plate mounting grooves (13) are formed along the vertical direction at predetermined intervals corresponding to the mounting position of the kick plate (3). Each kick plate mounting groove (13) is disposed so as to extend downward from the front end of each step plate mounting groove (12), and its upper end communicates with the step plate mounting groove (12) and has a lower end. Is opened downward on the back side of the stairs. And it is comprised so that the both-sides edge part of a kick board (3) can be inserted in the kick board attachment groove | channel (13) from the lower end open part. The kick plate mounting groove (13) arranged at the lowest level (first level) of the kick plate mounting grooves (13) has a lower end opened at the horizontal installation portion (11) at the front end of the side plate. ing.
図３および図４に示すように側板（１）の内側面における最下段の蹴込板取付溝（１３）の後方には、その取付溝（１３）を側板（１）の後方に開放する作業溝（４）が形成されている。この作業溝（４）は、内側面視において、４つの直線縁部（４１）〜（４４）により囲まれた四角形状を有している。すなわち作業溝（４）は、蹴込板取付溝（１３）に連通する前側縁部（前側連通縁部４１）と、階段裏面側において後方に開放される後側縁部（後側開放縁部４２）と、前側連通縁部（４１）の上端および後側開放縁部（４２）の上端との間を結ぶ上側縁部（上側壁部４３）と、階段裏面側において下方に開放される下側縁部（下側開放縁部４４）とを有している。 As shown in FIG. 3 and FIG. 4, a working groove that opens the mounting groove (13) to the rear of the side plate (1) is provided behind the lowermost kick plate mounting groove (13) on the inner surface of the side plate (1) (4) is formed. The working groove (4) has a quadrangular shape surrounded by four straight edge portions (41) to (44) in the inner side view. That is, the work groove (4) includes a front edge (front communication edge 41) communicating with the kick plate mounting groove (13) and a rear edge (rear open edge 42) opened rearward on the back side of the staircase. ) And the upper end of the front communication edge portion (41) and the upper end of the rear open edge portion (42) (upper side wall portion 43), and the lower side opened downward on the back side of the staircase And an edge (lower open edge 44).
作業溝（４）の前側連通縁部（４１）は、蹴込板取付溝（１３）の上下方向ほぼ全域に対応する大きさに設定されており、その全域において蹴込板取付溝（１３）に連通されている。さらに作業凹部（４）における後側開放縁部（４２）の上端は、前側連通縁部（４１）の上端よりも下方に配置されている。換言すれば上側壁部（４３）は、前側連通縁部（４１）の上端位置、つまり蹴込板取付溝（１３）の上端位置から後方に向けて斜め下向きに傾斜するように配置されている。 The front communication edge (41) of the working groove (4) is set to a size corresponding to substantially the entire vertical direction of the kick plate mounting groove (13), and communicates with the kick plate mounting groove (13) in the entire region. Has been. Furthermore, the upper end of the rear open edge (42) in the working recess (4) is disposed below the upper end of the front communication edge (41). In other words, the upper side wall portion (43) is disposed so as to be inclined obliquely downward from the upper end position of the front communication edge portion (41), that is, from the upper end position of the kick plate mounting groove (13).
ここで本実施形態においては、図４に示すように作業溝（４）の上側壁部（４３）における垂直線に対する開き角度（θ）を３０〜６０°、好ましくは３５〜５５°に設定するのが良い。すなわち上側壁部角度（θ）を上記の規定範囲内に設定する場合には、後述するように蹴込板取付作業をスムーズに行うことができる。換言すれば傾斜角度（θ）が小さ過ぎる場合には、後述するように蹴込板（３）を取り付けるのが困難になる恐れがある。また角度（θ）を過度に大きく形成しても、拡大化による優位性はなく却って、作業溝（４）の形成範囲が大きくなり、段板（２）を支持する部分が小さくなり、側板強度の低下などを来す恐れがある。極端に説明すると、開き角度（θ）が９０°になると、段板（２）を支持する部分が消失されてしまうという不具合が生じる。もっとも上記開き角度（θ）を９０°に設定して、段板支持部分を消失させたとしても、金具、木片、樹脂片などの段板支持用の部材を別途、後付けで取り付けることにより、段板を支障なく取り付けることができる。 Here, in this embodiment, as shown in FIG. 4, the opening angle (θ) with respect to the vertical line in the upper wall portion (43) of the working groove (4) is set to 30 to 60 °, preferably 35 to 55 °. Is good. That is, when the upper side wall portion angle (θ) is set within the specified range, the kick plate mounting operation can be performed smoothly as described later. In other words, when the inclination angle (θ) is too small, it may be difficult to attach the kick plate (3) as described later. Even if the angle (θ) is excessively large, the advantage due to enlargement is lost, but the formation range of the working groove (4) is increased, the portion supporting the step plate (2) is reduced, and the side plate strength is reduced. There is a risk of lowering. If it explains extremely, when the opening angle ((theta)) will be 90 degrees, the malfunction that the part which supports a corrugated board (2) will lose | disappear will arise. However, even if the opening angle (θ) is set to 90 ° and the step board support portion is lost, a step plate support member such as a metal fitting, a piece of wood, a resin piece, etc., is attached separately and attached later. The board can be installed without any problem.
図５に示すように作業溝（４）はその深さが、蹴込板取付溝（３）の深さよりも深く形成されており、後述するように蹴込板（３）の作業溝（４）への挿入作業を容易に行うことができるよう構成されている。 As shown in FIG. 5, the depth of the work groove (4) is deeper than the depth of the kick plate mounting groove (3). As will be described later, the work groove (4) is formed in the work groove (4) of the kick plate (3). It is comprised so that insertion of can be performed easily.
また段板（２）および蹴込板（３）としては長板形状のものが用いられるが、図９に示すように最下段の蹴込板（３）としては、その裏面側の下端縁部沿って桟部材（３５）が固定されたものが用いられる。この桟部材（３５）は、最下段の蹴込板（３）を床面（Ｆ）にビスなどで固定するのに有効である。 Further, as the step plate (2) and the kick plate (3), those having a long plate shape are used, but as shown in FIG. 9, the lowermost step kick plate (3) is along the lower edge on the back side. What fixed the crosspiece member (35) is used. The crosspiece (35) is effective for fixing the lowermost kick plate (3) to the floor (F) with screws or the like.
なお実施形態においては、側板（１）、段板（２）および蹴込板（３）などの各構成部材としては、組付現場に搬入される前に予め製作工場側で加工されたプレカット部材が用いられている。例えば側板（１）における段板取付溝（１２）、蹴込板取付溝（１３）および作業溝（４）は、現場搬入前に予め形成されている。 In addition, in embodiment, as each structural member, such as a side board (1), a step board (2), and a kick board (3), before carrying in an assembly site, the pre-cut member processed beforehand by the production factory side is used. It is used. For example, the step plate mounting groove (12), the kick plate mounting groove (13), and the working groove (4) in the side plate (1) are formed in advance before carrying in the site.
本実施形態においては、以上の構成要素を用いて階段を施工するものである。まず一対の側板（１）（１）を互いに間隔をおいて平行に配置した状態で家屋構造体（１０）に固定する。このとき側板（１）の下端部における水平設置部（１１）を床面（Ｆ）に設置させるように配置する。これにより最下段の蹴込板取付溝（１３）の下端開放部および作業溝（４）の下側開放縁部（４４）は、床面（Ｆ）によって閉塞される。 In this embodiment, a staircase is constructed using the above components. First, the pair of side plates (1) and (1) are fixed to the house structure (10) in a state where they are arranged in parallel with a space therebetween. At this time, it arrange | positions so that the horizontal installation part (11) in the lower end part of a side plate (1) may be installed in a floor surface (F). As a result, the lower end open portion of the lowermost kick plate mounting groove (13) and the lower open edge (44) of the work groove (4) are closed by the floor (F).
続いて下側から順に、段板（２）および蹴込板（３）を固定していく。まず１段目（最下段）の段板（２）を一対の側板（１）（１）の裏面側（階段裏面側）から組み付ける。すなわち段板（２）の両側縁部を一対の側板（１）（１）の内側面における最下段の両段板取付溝（１２）（１２）にその後端開放部から差し込む。その後、段板（２）をビスや楔などにより側板（１）に固定する。 Subsequently, the step plate (2) and the kick plate (3) are fixed in order from the lower side. First, the first (lowermost) step plate (2) is assembled from the back side (step back side) of the pair of side plates (1) (1). That is, both side edge portions of the step plate (2) are inserted into the lowermost step plate mounting grooves (12) and (12) on the inner surfaces of the pair of side plates (1) and (1) from the rear end open portion. Thereafter, the step plate (2) is fixed to the side plate (1) with screws or wedges.
なお段板（２）の下面側における蹴込板取付溝（１３）（１３）に対応する位置には、蹴込板（３）の上端を位置決め状態に収容可能な蹴込板上端収容溝（２３）が形成されている。 At the position corresponding to the kick plate mounting grooves (13), (13) on the lower surface side of the step plate (2), there is a kick plate upper end receiving groove (23) capable of receiving the upper end of the kick plate (3) in a positioned state. Is formed.
次に図６に示すように、最下段の蹴込板（３）をその上側を前方に向けて水平に配置して、その水平状態の蹴込板（３）の両側縁部を一対の側板（１）（１）の裏面側から両側の作業溝（４）（４）にその後側開放縁部（４２）（４２）を通じて挿入する。 Next, as shown in FIG. 6, the lowermost kick plate (3) is horizontally arranged with its upper side facing forward, and both side edges of the horizontal kick plate (3) are connected to a pair of side plates (1 ) (1) From the back side to the working grooves (4) and (4) on both sides through the rear open edges (42) and (42).
続けて図７に示すように、両作業溝（４）（４）および両蹴込板取付溝（１３）（１３）内において、蹴込板（３）をその前側（挿入先端側）を上方に持ち上げるように回転させつつ、前方へ挿入していく。 Next, as shown in FIG. 7, the front side (insertion tip side) of the kick plate (3) is lifted upward in the two working grooves (4) (4) and the two kick plate mounting grooves (13) (13). Rotate and insert forward.
その後図８に示すように、蹴込板（３）をその上端部を段板裏面の上記蹴込板上端収容溝（２３）に収容して垂直姿勢に配置し、蹴込板（３）の両側縁部を一対の側板（１）（１）の内側面における両蹴込板取付溝（１３）（１３）内に収容配置する。続いてその状態で蹴込板（３）をビスなどを用いて側板（１）（１）に固定する。さらに必要に応じて、蹴込板（３）をその桟部材（３５）を介してビスなどにより床面（Ｆ）に固定する。 Then, as shown in FIG. 8, the upper end of the kick plate (3) is accommodated in the above-mentioned kick plate upper end receiving groove (23) on the back of the step plate and arranged in a vertical posture, and both side edges of the kick plate (3) are arranged. Are accommodated and disposed in the two kick plate mounting grooves (13) (13) on the inner side surfaces of the pair of side plates (1) (1). Subsequently, in this state, the kick plate (3) is fixed to the side plates (1) (1) using screws or the like. Further, if necessary, the kick plate (3) is fixed to the floor (F) with a screw or the like through the crosspiece member (35).
こうして最下段（１段目）の段板（２）および蹴込板（３）を取り付けた後は、２段目の段板（２）をその両側縁部を２段目の両段板取付溝（１２）（１２）に後端開放部からそれぞれ挿入して固定し、続けて２段目の蹴込板（３）をその両側縁部を２段目の両蹴込板取付溝（１３）（１３）に下端開放部からそれぞれ挿入して固定する。 After attaching the lowermost step plate (2) and the kick plate (3) in this way, the second step plate (2) is connected to the second step plate mounting grooves on both side edges. (12) and (12) are inserted and fixed from the rear end opening portions, respectively, and then the second-stage kick plate (3) is attached to both side edges of the second-stage kick plate mounting grooves (13) (13). ) Are inserted and fixed respectively from the bottom open part.
続けて３段目以降の段板（２）および蹴込板（３）を上記と同様に下から順に組み付けていくことにより、階段の組付が完了する。 Subsequently, the assembly of the stairs is completed by assembling the third and subsequent step plates (2) and the kick plate (3) sequentially from the bottom in the same manner as described above.
このように本実施形態の階段施工方法によれば、一対の側板（１）（１）を家屋構造体（１０）に固定した後、各段板（２）および各蹴込板（３）を下から順に組み付けるものであるため、もっともシンプルな手順で無駄なくスムーズに組み立てることができ、効率良く簡単に施工することができる。 As described above, according to the staircase construction method of the present embodiment, after fixing the pair of side plates (1) and (1) to the house structure (10), the step plates (2) and the kick plates (3) are moved down. Since it is assembled in order, it can be assembled smoothly without waste with the simplest procedure, and can be constructed efficiently and easily.
特に本実施形態においては、一対の側板（１）（１）における最下段の蹴込板取付溝（１３）（１３）の後方に、蹴込板取付溝（１３）（１３）に連通し、かつ後方に向けて開放する作業溝（４）（４）を形成し、この作業溝（４）（４）を介して、最下段の蹴込板（３）を側板後方から差し込んで取り付けるようにしている。このため一対の側板（１）（１）を家屋構造体（１０）に固定した後、後付けで最下段の蹴込板（３）を簡単かつ確実に組み付けることができ、階段施工作業を効率良くスムーズに行うことができる。例えば、仮止めした一対の側板を揺動させて最下段の蹴込板を組み付けた後、一対の側板を本固定したり、あるいは最下段の蹴込板を組み付けた一対の側板を構造体に固定するなどの面倒な作業を必要とする工法とは異なり、一対の側板（１）（１）を構造体（１０）に固定した後、最下段の蹴込板（３）を簡単かつ確実に組み付けることができる。 In particular, in the present embodiment, the rear plate of the pair of side plates (1) and (1) communicates with the kick plate mounting grooves (13) and (13) behind the lowermost plate mounting grooves (13) and (13), and Working grooves (4) and (4) that open toward the bottom are formed, and the lowermost kick plate (3) is inserted and attached from the rear side of the side plates through the working grooves (4) and (4). For this reason, after fixing a pair of side plates (1) and (1) to the house structure (10), the lowermost kick plate (3) can be assembled easily and reliably by retrofitting, and the stairs construction work can be carried out efficiently and smoothly. Can be done. For example, after a pair of temporarily fixed side plates are swung and the bottom kick plate is assembled, the pair of side plates are permanently fixed, or the pair of side plates assembled with the bottom kick plate is fixed to the structure. Unlike the construction method that requires troublesome work such as, after fixing the pair of side plates (1) (1) to the structure (10), the lowermost kick plate (3) can be assembled easily and reliably. it can.
しかも本実施形態においては、固定した一対の側板（１）（１）の後側から、最下段の蹴込板（３）を挿入固定するものであるため、例えば一人の作業者のみでも難なく施工することができる。 Moreover, in the present embodiment, since the lowermost kick plate (3) is inserted and fixed from the rear side of the fixed pair of side plates (1) and (1), for example, only one operator can construct it without difficulty. be able to.
また本実施形態においては、作業溝（４）の深さを蹴込板取付溝（１３）の深さよりも深く形成しているため、蹴込板（３）の両側端面と作業溝（４）の底面との間に余裕ができて、蹴込板（３）の作業溝（４）への挿入を容易に行うことができ、ひいては作業溝（４）からの蹴込板（３）の蹴込板取付溝（１３）への移動もスムーズに行うことができ、より一層蹴込板（３）の組付作業を簡単に行うことができる。 Moreover, in this embodiment, since the depth of the work groove (4) is formed deeper than the depth of the kick plate mounting groove (13), both side end surfaces of the kick plate (3) and the bottom surface of the work groove (4). Can be easily inserted into the work groove (4) of the kick plate (3), and as a result, the kick plate mounting groove (3) of the kick plate (3) from the work groove (4) ( The movement to 13) can be performed smoothly, and the assembling work of the kick plate (3) can be further easily performed.
なお上記実施形態においては、作業溝（４）における側板内面からの深さを底面全域において一様に形成して、作業溝（４）と蹴込板取付溝（１３）との底面間に段差が形成されるようにしているが、それだけに限られず、本発明においては、図１０に示すように、作業溝（４）の深さをその前側縁部（４１）に対し後側縁部（４２）が深くなるように、後方に向かうに従って次第に深くなるように形成しても良い。この場合同図に示すように作業溝（４）と蹴込板取付溝（１３）との底面間における段差をなくすことができる。もっとも発明においては、作業溝（４）の深さを蹴込板取付溝（１３）の深さよりも必ずしも深く形成する必要はなく、同程度に形成するようにしても良い。蹴込板取付溝と作業溝との深さを同程度に形成する場合、作業溝の前側縁部（前側連通縁部４１）に、視覚的に線などが表示されることはないが、蹴込板取付溝と作業溝との境界部分が作業溝の前側縁部（前側連通縁部４１）として構成されることになる。 In the above-described embodiment, the depth from the inner surface of the side plate in the working groove (4) is uniformly formed in the entire bottom surface, and there is a step between the bottom surfaces of the working groove (4) and the kick plate mounting groove (13). However, the present invention is not limited to this. In the present invention, as shown in FIG. 10, the depth of the working groove (4) is set to the rear edge (42) with respect to the front edge (41). You may form so that it may become deep so that it may become deep, so that it goes to back. In this case, as shown in the figure, the step between the bottom surfaces of the working groove (4) and the kick plate mounting groove (13) can be eliminated. In the invention, however, the depth of the working groove (4) is not necessarily formed deeper than the depth of the kick plate mounting groove (13), and may be formed to the same extent. When the depths of the kick plate mounting groove and the working groove are formed to be approximately the same, no line or the like is visually displayed on the front edge (front communication edge 41) of the working groove. A boundary portion between the mounting groove and the work groove is configured as a front edge (front communication edge 41) of the work groove.
また上記実施形態においては、側板における最下段の蹴込板取付溝（１３）に対応させて作業溝（４）を形成するようにしているが、それだけに限られず、本発明においては、２段目以降の蹴込板取付溝に対応する位置に作業溝を形成し、その蹴込板取付溝に対し階段裏面側から蹴込板を組み付けるようにしても良い。 In the above embodiment, the working groove (4) is formed so as to correspond to the lowermost kick plate mounting groove (13) in the side plate. However, the present invention is not limited to this, and in the present invention, the second and subsequent steps are used. A working groove may be formed at a position corresponding to the kick plate mounting groove, and the kick plate may be assembled to the kick plate mounting groove from the back side of the staircase.
また上記実施形態においては、階段構成部材として、現場搬入前に工場側で予め加工されたプレカット部材を用いるようにしているが、本発明はそれだけに限られず、現場において加工するようにしても良いし、ある程度工場側で加工された半プレカット材を現場に搬入して、現場で最終的に加工するようにしても良い。例えば段板取付溝および蹴込板取付溝が予め形成された側板を現場に搬入し、階段組立現場においてその側板（半プレカット材）に作業溝を形成するようにしても良い。 Moreover, in the said embodiment, although the pre-cut member previously processed by the factory side before carrying in on-site is used as a stair component, this invention is not restricted only to it, You may make it process on-site. Alternatively, the semi-precut material processed to some extent on the factory side may be brought into the site and finally processed at the site. For example, a side plate in which a step plate mounting groove and a kick plate mounting groove are formed in advance may be carried into the site, and a work groove may be formed in the side plate (half pre-cut material) at the stair assembly site.
また、上記実施形態においては、本発明の蹴込板取付方法を、途中で方向が転換されない直階段に適用した場合について説明したが、それだけに限られず、本発明は、途中で方向が転換される回り階段にも適用することができる。さらに本発明が適用可能な回り階段としては、途中で向きを１８０°転換する折返し階段や、途中で向きを９０°転換するかね折れ階段などを例示できる。 Moreover, in the said embodiment, although the case where the kick board attachment method of this invention was applied to the straight staircase where a direction is not changed on the way was demonstrated, it is not restricted only to it, This invention is a rotation where a direction is changed on the way. It can also be applied to stairs. Furthermore, examples of the rotating staircase to which the present invention can be applied include a folded staircase whose direction is changed by 180 ° in the middle, and a folded staircase whose direction is changed by 90 ° in the middle.
１…側板（階段構成部材）
１３…蹴込板取付溝
３…蹴込板
４…作業溝
４１…前側連通縁部
４２…後側開放縁部
４３…上側壁部
1 ... Side plate (stair component)
DESCRIPTION OF
Claims (6)
前記一対の側板の内側面における両蹴込板取付溝の後方に、前側が前記蹴込板取付溝に連通し、かつ後側が階段裏面側において後方に向けて開放する作業溝をそれぞれ形成しておき、
前記蹴込板を前記一対の側板に取り付けるに際し、階段裏面側における後方から前記蹴込板の両側縁部を上記両作業溝を介して両蹴込板取付溝までそれぞれ導いて、両蹴込板取付溝内にそれぞれ収容するものとし、
前記作業溝は、前記蹴込板取付溝と連通する前側連通縁部と、後方に向けて開放する後側開放縁部と、前記前側連通縁部の上端および後側開放縁部の上端との間を結ぶ上側壁部とを有し、前記前側連通縁部は前記蹴込板取付溝のほぼ全域に対応して設けられるとともに、前記後側開放縁部の上端位置が前記前側連通縁部の上端位置に対し低位に設定され、
前記上側壁部は前記前側連通縁部の上端位置から後方に向けて斜め下向きに傾斜するよう配置されることを特徴とする階段の蹴込板取付方法。 On the inner side surfaces of the pair of side plates arranged in parallel, vertical kick plate mounting grooves that open downward on the back side of the staircase are formed, respectively, and both edge portions of the kick plates are formed in both the kick plate mounting grooves. It is a method of attaching a kick plate of a staircase to be placed and arranged,
A working groove is formed behind the two kick plate mounting grooves on the inner side surfaces of the pair of side plates, the front side communicates with the kick plate mounting groove, and the rear side opens rearward on the back side of the staircase,
When attaching the kick plates to the pair of side plates, guide both side edges of the kick plates from the rear on the back side of the staircase to the two kick plate mounting grooves through the both working grooves, respectively. Each shall be housed,
The working groove is formed between a front communication edge that communicates with the kick plate mounting groove, a rear open edge that opens rearward, and an upper end of the front communication edge and an upper end of the rear open edge. And the front communication edge is provided corresponding to substantially the entire area of the kick plate mounting groove, and the upper end position of the rear open edge is the upper end position of the front communication edge. Is set lower than
The method of attaching a stair kick plate, wherein the upper side wall portion is disposed so as to be inclined obliquely downward from the upper end position of the front communication edge portion toward the rear .
前記一対の側板の内側面における両蹴込板取付溝の後方に、前側が前記蹴込板取付溝に連通し、かつ後側が階段裏面側において後方に向けて開放する作業溝をそれぞれ形成しておき、A working groove is formed behind the two kick plate mounting grooves on the inner side surfaces of the pair of side plates, the front side communicates with the kick plate mounting groove, and the rear side opens rearward on the back side of the staircase,
前記蹴込板を前記一対の側板に取り付けるに際し、階段裏面側における後方から前記蹴込板の両側縁部を上記両作業溝を介して両蹴込板取付溝までそれぞれ導いて、両蹴込板取付溝内にそれぞれ収容するものとし、When attaching the kick plate to the pair of side plates, the both side edges of the kick plate from the rear side on the back side of the staircase are guided to the two kick plate mounting grooves through the both working grooves, respectively, into the two kick plate mounting grooves. Each shall be housed,
前記蹴込板を前記蹴込板取付溝に収容するに際し、前記蹴込板を略水平に配置した状態で前記蹴込板の両側縁部を両作業溝にその後側開放部から挿入した後、その蹴込板を挿入先端側を上方に持ち上げるように回転させつつ両作業溝の前方に移動させることにより、前記蹴込板の両側縁部を前記両蹴込板取付溝まで導くようにしたことを特徴とする階段の蹴込板取付方法。When the kick plate is accommodated in the kick plate mounting groove, the both sides of the kick plate are inserted into both working grooves from the rear opening portion in a state where the kick plate is disposed substantially horizontally, and then the kick plate is Stair kicking characterized in that both side edge portions of the kick plate are guided to the two kick plate mounting grooves by moving the insertion tip side upward while rotating it so as to lift upward. Plate mounting method.
前記一対の側板の内側面における両蹴込板取付溝の後方に、前側が前記蹴込板取付溝に連通し、かつ後側が階段裏面側において後方に向けて開放する作業溝をそれぞれ形成しておき、A working groove is formed behind the two kick plate mounting grooves on the inner side surfaces of the pair of side plates, the front side communicates with the kick plate mounting groove, and the rear side opens rearward on the back side of the staircase,
前記蹴込板を前記一対の側板に取り付けるに際し、階段裏面側における後方から前記蹴込板の両側縁部を上記両作業溝を介して両蹴込板取付溝までそれぞれ導いて、両蹴込板取付溝内にそれぞれ収容するものとし、When attaching the kick plate to the pair of side plates, the both side edges of the kick plate from the rear side on the back side of the staircase are guided to the two kick plate mounting grooves through the both working grooves, respectively, into the two kick plate mounting grooves. Each shall be housed,
前記蹴込板取付溝の深さに対し、前記作業溝の深さが深く形成されることを特徴とする階段の蹴込板取付方法。A method for mounting a kick board for a staircase, wherein the depth of the working groove is deeper than the depth of the kick board mounting groove.
前記複数の蹴込板取付溝のうち、最下段の蹴込板取付溝に対応して、前記作業溝が形成される請求項１〜３のいずれか１項に記載の階段の蹴込板取付方法。 A plurality of the kick plate mounting grooves are formed at predetermined intervals on the pair of side plates,
The method of attaching a staircase kick plate according to any one of claims 1 to 3 , wherein the working groove is formed corresponding to a bottom-most kick plate attachment groove among the plurality of kick plate attachment grooves.
前記一対の側板の内側面における両蹴込板取付溝の後方に、前側が前記蹴込板取付溝に連通し、かつ後側が階段裏面側において後方に向けて開放する作業溝がそれぞれ形成され、
階段裏面側における後方から蹴込板の両側縁部が上記両作業溝を介して両蹴込板取付溝までそれぞれ導かれて、両蹴込板取付溝内にそれぞれ収容配置されるよう構成され、
前記作業溝は、前記蹴込板取付溝と連通する前側連通縁部と、後方に向けて開放する後側開放縁部と、前記前側連通縁部の上端および後側開放縁部の上端との間を結ぶ上側壁部とを有し、前記前側連通縁部は前記蹴込板取付溝のほぼ全域に対応して設けられるとともに、前記後側開放縁部の上端位置が前記前側連通縁部の上端位置に対し低位に設定され、
前記上側壁部は前記前側連通縁部の上端位置から後方に向けて斜め下向きに傾斜するよう配置されることを特徴とする階段構成部材。 A staircase constituting member comprising a pair of side plates each formed with a vertical kick plate mounting groove that opens downward on the inner side surface and arranged in parallel,
Working grooves are formed at the rear of both kick plate mounting grooves on the inner side surfaces of the pair of side plates, the front side communicates with the kick plate mounting grooves, and the rear side opens rearward on the back side of the staircase,
Both side edges of the kick plate from the rear on the back side of the staircase are guided to the two kick plate mounting grooves through the both working grooves, respectively, and are configured to be accommodated and arranged in the two kick plate mounting grooves, respectively .
The working groove is formed between a front communication edge that communicates with the kick plate mounting groove, a rear open edge that opens rearward, and an upper end of the front communication edge and an upper end of the rear open edge. And the front communication edge is provided corresponding to substantially the entire area of the kick plate mounting groove, and the upper end position of the rear open edge is the upper end position of the front communication edge. Is set lower than
The staircase component member, wherein the upper side wall portion is disposed so as to be inclined obliquely downward from the upper end position of the front communication edge portion toward the rear .
前記一対の側板の内側面における両蹴込板取付溝の後方に、階段裏面側における後方から前記蹴込板の両側縁部を挿入して両蹴込板取付溝までそれぞれ導くための作業溝がそれぞれ形成され、
前記作業溝は、前側が前記蹴込板取付溝に連通し、かつ後側が階段裏面側において後方に向けて開放するよう形成され、
前記作業溝は、前記蹴込板取付溝と連通する前側連通縁部と、後方に向けて開放する後側開放縁部と、前記前側連通縁部の上端および後側開放縁部の上端との間を結ぶ上側壁部とを有し、前記前側連通縁部は前記蹴込板取付溝のほぼ全域に対応して設けられるとともに、前記後側開放縁部の上端位置が前記前側連通縁部の上端位置に対し低位に設定され、
前記上側壁部は前記前側連通縁部の上端位置から後方に向けて斜め下向きに傾斜するよう配置されることを特徴とする階段。 On the inner side surfaces of the pair of side plates arranged in parallel, vertical kick plate mounting grooves that open downward on the back side of the staircase are formed, respectively, and both edge portions of the kick plates are formed in both the kick plate mounting grooves. A staircase,
Working grooves for inserting both side edges of the kick plate from the rear on the back side of the staircase and guiding them to the two kick plate mounting grooves are formed behind the two kick plate mounting grooves on the inner side surfaces of the pair of side plates, respectively. ,
The working groove is formed such that the front side communicates with the kick plate mounting groove, and the rear side opens rearward on the back side of the staircase ,
The working groove is formed between a front communication edge that communicates with the kick plate mounting groove, a rear open edge that opens rearward, and an upper end of the front communication edge and an upper end of the rear open edge. And the front communication edge is provided corresponding to substantially the entire area of the kick plate mounting groove, and the upper end position of the rear open edge is the upper end position of the front communication edge. Is set lower than
The staircase characterized in that the upper side wall portion is arranged to be inclined obliquely downward from the upper end position of the front communication edge portion toward the rear .
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| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |