JP2004011138A

JP2004011138A - Construction-material length adjustment structure and stopper for construction material

Info

Publication number: JP2004011138A
Application number: JP2002162155A
Authority: JP
Inventors: Tomiichi Osaka; 大坂　富一; Yoshitaka Hirobe; 廣部　賀崇; Ichiro Tamura; 田村　伊知郎
Original assignee: Fukuvi Chemical Industry Co Ltd; Yagikuma Co Ltd
Current assignee: Fukuvi Chemical Industry Co Ltd; Yagikuma Co Ltd
Priority date: 2002-06-03
Filing date: 2002-06-03
Publication date: 2004-01-15
Anticipated expiration: 2022-06-03
Also published as: JP3955794B2

Abstract

<P>PROBLEM TO BE SOLVED: To surely prevent the excessive adjustment of a length in the elongation direction of a construction material by a simple structure. <P>SOLUTION: A construction-material length adjustment structure and a stopper for a construction material have: a supporting leg body 10, to which a male screw section 11 is formed and which has a shaft section 12 having an outside diameter smaller than the maximum outside diameter of the male screw at a place adjacent to the male screw section 11; a base member 20, which has a cylindrical section and on the inner peripheral surface of which a female screw section 25, to which the male screw section 11 can be screwed, is formed; and a stopper 40 with an inner peripheral surface fitted onto the outer peripheral surface of the shaft section 12 and the outer peripheral surface of the base member 20. The stopper 40 has: a first fitting section 411 having an inside diameter smaller than the maximum outside diameter of the male screw section 11; and a second fitting section 412, in which a movement in the axial direction to the ed and which is fitted under the state in which a relative rotation to the base member 20 is allowed. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば床下材支持具（例えば床束）、梁、二重床といった建物材の長さや高さを調節するための構造に関するものである。
【０００２】
【従来の技術】
従来、上記のような建築材の長さを調節する構造としては、実登３０４６７３３号に記載されているものが存在している。この建築材は、図１３に示すように、内周に雌ねじ１０６が設けられ、下端に鍔部１０８が形成された筒状体１０７に、筒状体１０７と鍔部１０８とに亘って所定間隔補強リブ１０９が備えられたベース部材１０２と、外周に雄ねじ１１２を設けベース部材１０２の雌ねじ１０６に螺合する調整部材１０３と、上記ベース部材１０２及び上記調節部材１０３の外周に嵌合し、両部材を固定する環状のストッパー１０５とを有している。
【０００３】
上記のような建築材を使用した場合、下記のような方法で建築材の長さを調節する。まず、調節部材１０３の摺動溝１１３にストッパー１０５の突起部１１６を嵌合させた状態で、ストッパー１０５を調節部材１０３に挿通させる。次に、ストッパー１０５が補強リブ１０９の上部に接触しないようストッパー１０５をベース部材１０２より持ち上げた状態で、調節部材１０３をベース部材１０２に螺合させる。そして、ねじ推進させて建築材の全長を短くしたり、逆に後退させて上記全長を長くしたりすることにより、所望の長さになるまでねじ推進の度合を調節する。
【０００４】
【発明が解決しようとする課題】
上記の建築材の長さ調整は、互いに螺合するベース部材１０２と調節部材１０３とを相対回転させることにより行う。しかしながら、その回転操作は全く規制されていないので、建築材を長く伸ばそうとするあまり、ベース部材１０２と調節部材１０３とを回しすぎて両部材が外れてしまうおそれがある。また、外れる手前で回転操作が止められた場合でもベース部材１０２と調節部材１０３とが螺合する部分（重なり部分）の長さが小さいと両者の結合強度を充分に確保することができず、特に床束のような大きな荷重を支持する建築材においては、その荷重を受けるだけの充分な強度を確保できなくなるおそれがある。したがって、上記建築材が軸方向に対する荷重を支える為、雄ねじと雌ねじの螺合を一定長以上確保する必要があり、上記建築材の長さは一定長以下に設定する必要がある。しかしながら、従来の建築材では、建築材の長さの設定可能な範囲が分かりにくく、設定可能な範囲内に上記建築材の長さを設定することに手間取ることがあった。さらには、誤ってベース部材１０２と調節部材１０３との螺合を外してしまうおそれもあり、この場合においては再度上記螺合を行う必要があり、この点についても長さの調節を行う作業において負担となっていた。
【０００５】
そこで、本発明は、上記のような事態を防止するため、簡単な構造で建築材の伸び方向の長さ調節が過度に行われてしまうのを確実に防止出来る建築材長さ調節構造を提供することを目的とする。
【０００６】
【課題を解決するための手段】
本発明は、建築材の長さを調節する建築材長さ調節構造であって、少なくとも一方の軸方向の端部に、外周面に雄ねじをもつ雄ねじ部が形成され、かつ、この雄ねじ部に隣接する位置に当該雄ねじの最大外径よりも小さな外径をもつ本体軸部を有する雄ねじ部材と、筒状部分を有し、その内周面に上記雄ねじ部の雄ねじが螺着可能な雌ねじ部が形成された雌ねじ部材と、上記雄ねじ部材の本体軸部の外周面と上記雌ねじ部材外周面とに嵌合する内周面を持つストッパーとを有し、当該ストッパーは、上記雄ねじ部材の本体軸部の外径よりも大きくて、上記雄ねじ部の最大外径よりも小さい内径をもつ第一嵌合部と、上記雌ねじ部材の外周面に、この雄ねじ部材に対する軸方向の移動が規制され、かつ当該雌ねじ部材に対する相対回転は許容された状態で嵌合する第二嵌合部とを有し、上記第一嵌合部の軸方向端面と、上記雄ねじ部の軸方向端面とが当接する位置で、その当接位置から雄ねじ部材と雌ねじ部材とが伸びる方向への雄ねじ部材と雌ねじ部材との相対回転が規制されたものである。
【０００７】
上記のような建築材長さ調節機構を用いた場合、上記ストッパーの第一嵌合部の内周は上記雄ねじ部の外周よりも小径であるため、上記ストッパーが軸方向に移動したとき、上記第一嵌合部の軸方向端面と上記雄ねじ部の軸方向端面とが当接する。このとき、上記第二嵌合部により上記ストッパーと上記雌ねじ部材との軸方向の相対移動が規制されているため、上記ストッパーにより上記雌ねじ部材はこれ以上建築材が伸びる方向へ移動することが出来ない。よって、誤って建築材の伸び方向の長さ調節が過度に行われてしまうのを確実に防止することが可能となる。
【０００８】
また請求項２の発明は、上記ストッパーが、上記雄ねじ部材と上記雌ねじ部材との相対移動を規制する固定状態と、上記相対移動を許容する解放状態とに切り替え可能なように上記雄ねじ部材及び上記雌ねじ部材に嵌合しており、上記解放状態での上記ストッパーは、上記ストッパーと上記雌ねじ部材との相対回転を許容して上記雌ねじ部材との回転軸方向の移動を規制するよう上記雌ねじ部材に嵌合し、かつ、上記ストッパーと上記雄ねじ部材との相対回転を規制して上記雄ねじ部材との回転軸方向の移動を許容するよう上記雄ねじ部材に嵌合し、この解放状態から上記ストッパーと上記雌ねじ部材との相対回転を阻止することにより上記ストッパーが上記固定状態へと切り替わるものである。
【０００９】
この場合、上記ストッパーは、上記解放状態においては上記雌ねじ部材が設けられている部材とは相対回転可能であり、上記雄ねじ部材が設けられている部材とは軸方向に相対移動可能である。したがって、上記ストッパーを雄ねじ部材及び雌ねじ部材に嵌合させた状態のままでもねじ推進が阻害されることはなく、上記雄ねじ部材と雌ねじ部材との長さを調節することが可能である。よって、かかる場合において従来のようにわざわざストッパーを持ち上げて上記相対回転を行う必要がない。さらには、上記雌ねじ部材との相対回転を阻止するだけで上記固定状態へと切り替え可能である。この点図１３に記載した従来構造の場合、固定状態にするためには所望の長さにねじ推進の度合を調節した後、ストッパー１０５を軸方向に移動させて補強リブ１０９の上部に嵌合させる必要があるが、本発明においては上記従来技術のようにストッパーをわざわざ軸方向に移動させる必要がない。したがって、長さ調節を行う作業負担をより低減させることが可能となる。
【００１０】
なお請求項３の発明のように、上記ストッパーに、上記雄ねじ部材及び上記雌ねじ部材の外周部に嵌合する本体部と、このストッパーと上記雌ねじ部材との相対回転を許容する解放状態と、当該相対回転を規制する固定状態とに切替可能な切替部材とを備えるようにすると、上記の切替作業を行う手間をより低減することが可能となる。
【００１１】
また、請求項４の発明は、上記ストッパーが、弾性部材により形成され、その周方向の一部が分断された形状を有し、その分断部分を拡張する方向に弾性変形させることにより上記雄ねじ部材及び上記雌ねじ部材の外周面にその半径方向から着脱が可能である建築材長さ調節構造である。
【００１２】
この場合、上記雄ねじ部材と上記雌ねじ部材とを嵌合した後に、上記ストッパーを上記雄ねじ部材及び上記雌ねじ部材に取り付けて嵌合させることが可能となるため、当該建築材長さ調節構造の製造時の組み立て作業を行うことが容易となる。
【００１３】
請求項５の発明は、建築材の長さを調節する建築材長さ調節構造であって、少なくとも一方の軸方向の端部に、外周面に雄ねじをもつ雄ねじ部が形成され、かつ、この雄ねじ部に隣接する位置に当該雄ねじの最大外径よりも小さな外径をもつ本体軸部を有する雄ねじ部材と、筒状部分を有し、その内周面に上記雄ねじ部の雄ねじが螺着可能な雌ねじ部が形成された雌ねじ部材とを有し、当該雌ねじ部材の内周には、上記雄ねじ部材の本体軸部の外径よりも大径で、かつ、上記雄ねじ部の最大外径よりも小さい内径をもつ係止部が設けられ、当該係止部の軸方向端面と、上記雄ねじ部の軸方向端面とが当接する位置で、その当接位置から雄ねじ部材と雌ねじ部材とが伸びる方向への雄ねじ部材と雌ねじ部材との相対回転が規制される建築材長さ調節構造である。
【００１４】
上記のような建築材長さ調節機構を用いた場合、上記雌ねじ部材の係止部の内径は、上記雄ねじ部の最大外径より小径であるため、上記雄ねじ部材が上記雌ねじ部材に対して建築材が伸びる方向に相対移動して所定の位置まで到達すると、上記雄ねじ部の軸方向端面と上記係止部の軸方向端面とが当接し、これ以上建築材が伸びる方向へ相対移動させることが出来ない。よって、誤って建築材の伸び方向の長さ調節が過度に行われてしまうのを確実に防止することが可能となる。
【００１５】
また、請求項６の発明は、建築材の長さを調節する建築材長さ調節構造であって、少なくとも一方の軸方向の端部に、外周面に雄ねじをもつ雄ねじ部が形成された雄ねじ部材と、筒状部分を有し、その内周面に上記雄ねじ部の雄ねじが螺着可能な雌ねじ部が形成された雌ねじ部材とを有し、当該雄ねじ部材の雄ねじ部より先端側には、上記雌ねじ部の最大外径より大きな外径をもつ係止部が設けられ、当該係止部の軸方向端面と、上記雌ねじ部の軸方向端面とが当接する位置で、その当接位置から雄ねじ部材と雌ねじ部材とが伸びる方向への雄ねじ部材と雌ねじ部材との相対回転が規制される建築材長さ調節構造である。
【００１６】
上記のような建築材長さ調節機構を用いた場合、上記雄ねじ部材の係止部は、上記雌ねじ部の雌ねじの最大外径より大径であるため、上記雄ねじ部材が上記雌ねじ部材に対して建築材が伸びる方向に相対移動して所定の位置まで到達すると、上記係止部の軸方向端面と上記雌ねじの軸方向端面とが当接し、これ以上建築材が伸びる方向へ相対移動させることが出来ない。よって、誤って建築材の伸び方向の長さ調節が過度に行われてしまうのを確実に防止出来ることが可能となる。
【００１７】
【発明の実施の形態】
本発明の実施形態について、図１〜図１２を用いて説明する。ただし、本発明は以下の実施形態に限定されることはない。なお、本実施形態は、建築材として床下材支持具（床束）を例にとって記載しているが、その他の建築材（例えば梁、二重床の高さ調節構造等）においても本構造の利用をすることが可能である。
【００１８】
第一実施形態（図１〜図１０参照）
本実施形態の床下材支持具１は、図１の通り、支持脚体１０（雄ねじ部材に相当）と、ベース部材２０（雌ねじ部材に相当）と、床材支持部材３０（雌ねじ部材に相当）と、ストッパー４０とを備えている。そして、ベース部材２０の底面が、コンクリート、束石等の地盤部分と接し、床材支持部材３０の上面に設置された平面部３１及び側面部３２が、建築物の床下材を保持することにより、建築物の床下部分は床下材支持具１に支持されている。
【００１９】
支持脚体１０の両端には図２に示すように雄ねじ部１１が設けられており、その雄ねじ部１１に、ベース部材２０及び床材支持部材３０が螺着している。そして、支持脚体１０の外周とベース部材２０の外周、及び、支持脚体１０の外周とベース部材２０と外周を覆うようにストッパー４０（図１参照）が各々取り付けられている。
【００２０】
次に図２を用いて、支持脚体１０及びベース部材２０及び床材支持部材３０について説明する。
【００２１】
支持脚体１０は、軸状に形成され、その外周両端に形成された雄ねじ部１１、１１と、雄ねじ部１１以外の外周部分に形成された軸部１２とを有し、この軸部１２に摺動溝１３（図１参照）が軸方向に伸びるよう設けられている。また、雄ねじ部１１は、その最大外径が軸部１２より大きくなるよう形成されている。
【００２２】
ベース部材２０は、筒状に形成され、その内周には上記雄ねじ部１１と螺着可能な雌ねじ部２５が設けられている。また、ベース部材２０の一端（図２では下端に相当）には、地盤と接触して荷重を支える底面２１が鍔状に形成され、他端（図２では上端に相当）には、全周に亘って凹凸部２６が設けられている。そして、凹凸部２６に隣接する領域（図２では凹凸部２６に隣接する下側の領域）には、上記凹凸部２６より小径の凹部２７が全周に亘って設けられている。
【００２３】
床材支持部材３０は、ベース部材２０と同様に筒状に形成され、その内周についても、ベース部材２０と同様、上記雄ねじ部１１と螺着可能な雌ねじ部３５が設けられている。また、床材支持部材３０の一端（図２では上端に相当）には略長方形の形状の平面部３１が設けられ、平面部３１の対向する二辺には側面部３２が立設されている。そして、平面部３１の上に建築物の床下材を置くと、側面部３２によってその床下材は狭持されるようになっている。また、他端（図２では下端に相当）には、ベース部材２０の凹凸部と同様、全周に亘って凹凸部３６が設けられ、さらに、その隣接する領域についても、ベース部材２０と同様に上記凹凸部３６より小径の凹部３７が全周に亘って設けられている。
【００２４】
ストッパー４０は、図１に記載のように本体部４１と切替レバー４２（切替部材に相当）とを有する。以下本体部４１においては、図３（ａ）、図３（ｂ）を用いて説明する。
【００２５】
本体部４１は、環状の周方向の一部が分断された形状を有し、その分断された箇所の両端には各々レバー保持部４１４、４１４が設けられている。そして、その環状の部分には、上記支持脚体１０の軸部１２の外径よりも大きくて、上記雄ねじ部１１の最大外径よりも小さい内径をもつ第一嵌合部４１１と、上記第一嵌合部より大きい内径を持つ第二嵌合部４１２とを有している。第一嵌合部４１１の内周には、軸方向に伸び、かつ、上記支持脚体１０の摺動溝１３に嵌合可能な突起部４１６が設けられている。また、第二嵌合部４１２の内周の縁には内周側に突起するように凸部４１３が設けられている。なお、レバー保持部４１４、４１４には、若干括れたＵ字形に形成されたレバー嵌着部４１５が設けられている。また、本体部４１の素材は、合成樹脂等のように、弾性変形させることが可能な素材を使用している。
【００２６】
次に、切替レバー４２について図４を用いて説明する。切替レバー４２は、係合部材４２１とレバー部４２２とを有している。そして、レバー部４２２の一端側には、係合部材４２１を両側から狭持する狭持部４２５、４２５が設けられている。係合部材４２１は、略Ｌ字型に形成されており、その一端がレバー部４２２と連結されている。また、他端にはベース部材２０の凹凸部２６に嵌合可能なよう、凹凸形状に成形された係合部４２３が設けられている。すなわち、係合部４２３と、レバー部４２２とは略９０度の角度をなして形成されている。そして、係合部材４２１の折れ曲がった部分から狭持部４２５、４２５に向けて各々支点軸４２３、４２３が設けられることにより、係合部材４２１と狭持部４２５、４２５とが連結されている。
【００２７】
以下、図２、図５、図６を用いて、床下材支持具１の組み立て方法を説明する。なお、以下の説明は、支持脚体１０とベース部材２０との組み立てにおいて説明しているが、支持脚体１０と床材支持部材３０との組み立てについても略同等であるため、床材支持部材３０の構成要素のうち、ベース部材２０の構成要素に対応する部分に関しては、括弧を付して記載することとし、その重複説明を省略する。
【００２８】
工程１（図２参照）：支持脚体１０の雄ねじ部１１を、ベース部材２０（床材支持部材３０）の雌ねじ部２５（雄ねじ部３５）に螺着する。
【００２９】
工程２（図５、図６参照）：ストッパー４０の本体部４１を弾性変形させてレバー保持部４１４、４１４の間隔を広げ、本体部４１を上記支持脚体１０の外周及びベース部材２０（床材支持部材３０）の外周に取り付ける。このとき、図６に示すように、本体部４１の第一嵌合部４１１は支持脚体１０に嵌合し、第二嵌合部４１２はベース部材２０（床材支持部材３０）に嵌合する。具体的には、第一嵌合部４１１と支持脚体１０とは、第一嵌合部４１１が支持脚体１０の軸部１２を覆い、突起部４１６が摺動溝１３に嵌合する（図７（ａ）参照）ように装着される。そして、第二嵌合部４１２とベース部材２０（床材支持部材３０）とは、第二嵌合部４１２が凹凸部２６（凹凸部３６）の外周を覆い、その内周に設けられた凸部４１３が凹部２７（凹部３７）に嵌合するように装着される。
【００３０】
工程３（図６参照）：本体部４１のレバー保持部４１４に切替レバー４２を取り付ける。このとき、切替レバー４２のレバー保持部４１４への取り付けは、レバー嵌着部４１５に切替レバー４２の支点軸４２４を嵌着することにより行われる。この場合、切替レバー４２は、支点軸４２４を中心に回転可能となっている。
【００３１】
次に、図７〜図１０を用いて床下材支持具１の長さを調節する方法について説明する。図７（ａ）、（ｂ）は、上記ストッパー４０が、支持脚体１０とベース部材２０（床材支持部材３０）との相対移動を規制するように嵌合している状態、すなわち固定状態を示したものである。この状態では、切替レバー４２は、その係合部材４２１の係合部４２３がベース部材２０（床材支持部材３０）の凹凸部２６（凹凸部３６）に係合しており、ベース部材２０（床材支持部材３０）とストッパー４０との相対回転を係止している。加えて、ストッパー４０と支持脚体１０との相対回転は突起部４１６及び摺動溝１３を介して係止されているため、支持脚体１０とベース部材２０（床材支持部材３０）との相対移動は規制されている。
【００３２】
以下に上記の状態から床下材支持具１の長さを最大長まで調節する手順について記載する。
【００３３】
手順１（図７、図８参照）：図７（ａ）、（ｂ）の状態から、切替レバー４２のレバー部４２２を上に引上げることにより、切替レバー４２を支点軸４２４を中心に回転させて、図８（ａ）、図８（ｂ）に記載の状態とする。このとき、切り替レバー４２の係合部４２３は、上記回転に伴い下側に移動し、凹凸部２６から外れる。すなわち、切替レバー４２の係合部４２３と凹凸部２６との係合状態は解除され、上記ストッパー４０と上記ベース部材２０（床材支持部材３０）との相対回転が可能となるため、支持脚体１０と上記ベース部材２０（床材支持部材３０）との相対回転も可能となる（解放状態に相当）。そして、支持脚体１０及びベース部材２０（床材支持部材３０）を相対回転させてねじ推進を行う。
【００３４】
手順２（図９参照）：上記ねじ推進を継続すると、上記ストッパー４０の第一嵌合部４１１の内径は、上記雄ねじ部１１の最大外径よりも小さいため、上記雄ねじ部１１と、第一嵌合部４１１の端面４１１ａとが当接する。この当接によりストッパー４０と支持脚体１０との軸方向の相対移動が阻止される。加えて、ストッパー４０の凸部４１３とベース部材２０（床材支持部材３０）の凹部２７（凹部３７）とが嵌合しているため、ベース部材２０（床材支持部材３０）とストッパー４０との軸方向の相対移動も阻止されている。よって、第一嵌合部４１１の端面４１１ａが雄ねじ部１１に当接することにより、ベース部材２０（床材支持部材３０）はこれ以上床下材支持具１の長さが伸びる方向へ移動することが出来なくなる。
【００３５】
手順３（図１０参照）：図９の状態から、切替レバー４２のレバー部４２２を引き下げることにより、再び、切替レバー４２の係合部４２３をベース部材２０（床材支持部材３０）の凹凸部２６（凹凸部３６）に係合させ、ベース部材２０（床材支持部材３０）とストッパー４０との相対回転を係止する。
【００３６】
以上より、上記のような床下材支持具１を用いた場合、上記ストッパー４０の第一嵌合部４１１の内周は、上記雄ねじ部１１の外周よりも小径であるため、第一嵌合部４１１の端面４１１ａと上記支持脚体１０の雄ねじ部１１の軸方向端面とが当接可能である。さらには、第二嵌合部４１２の凸部４１３により、ストッパー４０とベース部材２０（床材支持部材３０）との軸方向の相対移動が規制されているため、第一嵌合部４１１の端面４１１ａと雄ねじ部１１とが当接すると、ベース部材２０（床材支持部材３０）はこれ以上建築材が伸びる方向へ移動することが出来ない。よって、誤って建築材の伸び方向の長さ調節が過度に行われてしまうのを確実に防止出来る。
【００３７】
また、ストッパー４０は、手順１及び図８に示したような解放状態においてはベース部材２０（床材支持部材３０）とは相対回転可能であり、支持脚体１０とは軸方向に相対移動可能である。したがって、ストッパー４０を支持脚体１０及びベース部材２０（床材支持部材３０）に嵌合させた状態のままでもねじ推進が阻害されることはなく、床下材支持具１の長さを調節することが可能である。よって、かかる場合において、従来のようにわざわざストッパーを持ち上げて相対回転を行う必要がない。
【００３８】
さらには、上記切替レバー４２を上下させるだけで、ストッパー４０とベース部材２０（床材支持部材３０）との相対回転を阻止したり、許容したりすることが出来る。また、上記解放状態と上記固定状態との切り替えは、上記相対回転を阻止したり、許容したりすることを切り替えることだけで行うことが可能である。したがって、長さ調節を行う作業負担をより低減させることが可能となる。
【００３９】
なお、ストッパー４０は、弾性変形可能な素材によって形成されており、また、その周方向の一部が分断された形状を有している。
【００４０】
したがって、その分断部分を拡張する方向に弾性変形させることにより、支持脚体１０及びベース部材２０（床材支持部材３０）にその半径方向からストッパー４０を着脱させることが可能である。よって、図５のように、支持脚体１０及びベース部材２０（床材支持部材３０）を嵌合した後に、ストッパー４０を支持脚体１０及びベース部材２０（床材支持部材３０）に取り付けて嵌合させることが可能となるため、当該建築材長さ調節構造の製造時の組み立て作業を行うことが容易となる。
【００４１】
以下の実施形態において、第１実施形態と同一部分には同一符号を付して示し、その重複説明を省略する。また、第二、第三実施形態においては、支持脚体１０とベース部材２０の説明のみをおこなっているが、床材支持部材３０についても、平面部３１及び側面部３２を除いてベース部材２０と同様の構成をとることも可能なため、その説明を省略する。
【００４２】
第二実施形態（図１１参照）
本実施形態の床下材支持具１は、図１１の通り、支持脚体１０と、ベース部材２０とを備えている。そして、支持脚体１０の軸方向端部に設けられた雄ねじ部１１は、その最大外径が軸部１２より大きくなるよう形成されている。また、図示された雄ねじ部１１以外の部分については、後述する係止部５０ａの径より小径となっており、係止部５０ａと遊嵌させることが可能になっている。
【００４３】
ベース部材２０は、管状に形成され、その一端（本図では下端に相当）には、地盤と接触して荷重を支える底面２１が鍔状に形成されている。そして、その内周には、上記雄ねじ部１１と螺着可能な雌ねじ部２５と、底面２１が設けられた方の軸方向端部に形成された蓋嵌着部２１ａと、その反対側の軸方向端部に形成された係止部５０ａとが備えられている。係止部５０ａは、軸部１２の外径よりも大きく、かつ、雄ねじ部１１の最大外径よりも小さい内径を有している。
【００４４】
以下に床下材支持具１の長さを調節する手順について記載する。
【００４５】
まず、支持脚体１０について、図示された雄ねじ部１１とは反対側の軸方向端部を、蓋嵌着部２１ａ側からベース部材２０の内周に、雄ねじ部１１の端面が雌ねじ部２５の端面に当接するまで挿入作業を続ける。
【００４６】
次に、雄ねじ部１１と雌ねじ部２５を螺合させて、図１１のように雄ねじ部１１の端面が係止部５０ａに当接するまでねじ推進を行う。
【００４７】
この場合、係止部５０ａの内径が、雄ねじ部１１の最大外径より小さいため、雄ねじ部１１の端面が係止部５０ａに当接し、これ以上ねじ推進を行うことが出来ない。すなわち、支持脚体１０とベース部材２０は、これ以上床下材支持具１が伸びる方向へ相対回転することが出来なくなる。よって、誤って床下材支持具１の伸び方向の長さ調節が過度に行われてしまうのを確実に防止することが可能となる。
【００４８】
なお、その次の手順として、蓋２２１を蓋嵌着部２１ａに嵌着させることも可能である。この場合、床下材支持具１が縮む方向にねじ推進が行われたとしても、支持脚体１０の端面と蓋２２１とが当接するために、蓋２２１がこれ以上床下材支持具１が縮む方向にねじ推進が行われることが防止される。よって、雄ねじ部１１と雌ねじ部２５との螺合を誤って外してしまうことを防止される。
【００４９】
第三実施形態（図１２参照）
本実施形態は上記第二実施形態から下記の構成を変更したものである。
【００５０】
支持脚体１０の雄ねじ部１１の先端に、その径がベース部材２０の雌ねじ部２５より大きな係止部５０ｂが形成されている。
【００５１】
また、ベース部材２０の内周には、底面側から順に、蓋嵌着部２１ａと、前記係止部５０ｂより大径の嵌挿部２５ａと、上記雄ねじ部１１と螺着可能な雌ねじ部２５とが備えられている。
【００５２】
そして、床下材支持具１の長さを調節する手順については、まず、第二実施形態と同様、支持脚体１０を蓋嵌着部２１ａ側から挿入し、雄ねじ部１１の端面が雌ねじ部２５の端面に当接するまで挿入作業を続ける。そして、次に雄ねじ部１１と雌ねじ部２５を螺合させて、図１２のように係止部５０ｂの端部が雌ねじ部２５の端部に当接するまでねじ推進を行う。
【００５３】
この場合、係止部５０ｂは雌ねじ部２５より大径であるため、係止部５０ｂの端部が雌ねじ部２５の端面に当接し、これ以上ねじ推進を行うことが出来ない。すなわち、支持脚体１０とベース部材２０は、第二実施形態と同様、これ以上床下材支持具１が伸びる方向へ相対回転することが出来なくなる。よって、誤って床下材支持具１の伸び方向の長さ調節が過度に行われてしまうのを確実に防止出来ることが可能となる。
【００５４】
その他実施形態
（１）　必ずしも、支持脚体１０に雄ねじ部１１を設け、ベース部材２０（床材支持部材３０）に雌ねじ部２５（雌ねじ部３５）、凹凸部２６（凹凸部３６）、凹部２７（凹部３７）を設ける必要はない。例えば、支持脚体１０に雌ねじ部、凹凸部、凹部を設け、ベース部材２０（床材支持部材３０）に雄ねじ部を設けることも可能である。
【００５５】
（２）　本発明は、上記のような床下材支持具に限定されることはなく、梁等のように他の建築材についても本構造を使用することが可能である。
【００５６】
（３）　本発明の切替部材としては、切替レバー４２の代わりにボルト、ナット等のような締付治具をレバー嵌着部４１５、４１５間に亘って取り付け、当該締付治具を締付けたり緩めたりすることで、上記固定状態と上記解放状態とに切り替えることが可能である。
【００５７】
（４）　本発明の雌ねじ部材は、必ずしも支持脚体の両端に設ける必要はなく、片側のみでもよい。例えば、支持脚体１０とベース部材２０、又は支持脚体１０と床材支持部材３０とを一体に形成し、雌ねじ部材を一つにしてもよい。
【００５８】
（５）　上記第二実施形態において、支持脚体１０をベース部材２０の内周に挿入するとき、必ずしも、蓋嵌着部２１ａ側から行う必要はない。例えば、ベース部材２０の係止部５０ａを、強制的に弾性変形させて支持脚体１０を係止部５０ａ側から挿入することも可能である。また、係止部５０ａを、その先端が内周の奥側（図１１では下側）に向けて曲がっている舌状の弾性片にすることより、支持脚体１０を係止部５０ａ側から挿入できるようにすることも可能である。しかしながら、支持脚体１０をベース部材２０の内周に挿入するとき、蓋嵌着部２１ａ側から行うほうが、雌ねじ部２５を痛めずに入れることが出来るため、好ましい。なお、支持脚体１０を蓋嵌着部２１ａ側からベース部材２０の内周に挿入する場合でも、例えば蓋２２１を蓋嵌着部２１ａに嵌着しておくことで支持脚体１０が蓋嵌着部２１ａ側から誤って抜けてしまうことを防止することが可能である。
【００５９】
（６）　上記第三実施形態においても、上記第二実施形態と同様、支持脚体１０をベース部材２０の内周に挿入するとき、必ずしも、蓋嵌着部２１ａ側から行う必要はない。例えば、支持脚体１０の係止部５０ｂを、強制的に弾性変形させて支持脚体１０を係止部５０ａ側から挿入することも可能である。また、係止軸１１について、その縁部を支持脚体１０の基端側（図１２では上側）に向けて曲がっている舌状の弾性片にすることにより、上記第二実施形態と同様、支持脚体１０を雌ねじ部２５側から挿入できる（図１２では上側から挿入することを示す。）ようにすることも可能である。この場合においても、上記の「その他実施形態」の（５）に記載した場合と同様の理由から、支持脚体１０をベース部材２０の内周に挿入するとき、蓋嵌着部２１ａ側から行うほうが好ましい。
【００６０】
【発明の効果】
以上のように請求項１の発明によれば、上記ストッパーの第一嵌合部の内周は上記雄ねじ部の外周よりも小径であるため、上記ストッパーが軸方向に移動したとき、上記第一嵌合部の軸方向端面と上記雄ねじ部の軸方向端面とが当接し、さらには、上記第二嵌合部により上記ストッパーと上記雌ねじ部材との軸方向の相対移動が規制されているため、上記ストッパーにより上記雌ねじ部材はこれ以上建築材が伸びる方向へ移動することが出来ない。よって、誤って建築材の伸び方向の長さ調節が過度に行われてしまうのを確実に防止することが可能となる。
【００６１】
また請求項２に係る発明については、上記ストッパーは、上記ストッパーを雄ねじ部材及び雌ねじ部材に嵌合させた状態のままでもねじ推進が阻害されることはなく、上記雄ねじ部材と雌ねじ部材との長さを調節することが可能である。よって、かかる場合において従来のようにわざわざストッパーを持ち上げて上記相対回転を行う必要がない。さらには、上記雌ねじ部材との相対回転を阻止するだけで上記固定状態へと切り替え可能である。したがって、長さ調節を行う作業負担をより低減させることが可能となる。
【００６２】
なお、請求項５の発明によれば、上記雌ねじ部材の係止部の内径は、上記雄ねじ部の最大外径より小径であるため、上記雄ねじ部材と上記雌ねじ部材とが建築材が伸びる方向に相対移動したとき、上記雄ねじ部の軸方向端面と上記係止部の軸方向端面とが当接し、これ以上建築材が伸びる方向へ相対移動させることが出来ない。よって、請求項１と同様の効果を得ることが出来る。
【００６３】
また、請求項６の発明によれば、上記雄ねじ部材の係止部は、上記雌ねじ部の雌ねじの最大外径より大径であるため、上記雄ねじ部材と上記雌ねじ部材とが建築材が伸びる方向に相対移動したとき、上記係止部の軸方向端面と上記雌ねじの軸方向端面とが当接し、これ以上建築材が伸びる方向へ相対移動させることが出来ない。よって請求項１及び５と同様の効果を得ることが出来る。
【図面の簡単な説明】
【図１】本発明の第一実施形態にかかる建築材（建築材支持具）の全体を示したものである。
【図２】図１にかかる建築材の雄ねじ部材と雌ねじ部材とを示したものである。
【図３】（ａ）は、図１にかかる建築材のストッパーの本体部を示した平面図、（ｂ）は、一部を断面にした上記本体部の正面図である。
【図４】図３に示したストッパーに対応する切替部材を示した斜視図である。
【図５】図１にかかる建築材の組み立て工程を示した図である。
【図６】図１にかかる建築材の組み立て工程を示した図である。
【図７】図１にかかる建築材の長さを調節する手順を示した図であり、（ａ）はその平面図、（ｂ）は（ａ）のＡ−Ａ’断面図である。
【図８】（ａ）は、図１にかかる建築材の長さを調節する手順を示した図であり、（ａ）はその平面図、（ｂ）は（ａ）のＡ−Ａ’断面図である。
【図９】図１にかかる建築材の長さを調節する手順を示した平面断面図である。
【図１０】図１にかかる建築材の長さを調節する手順を示した平面断面図である。
【図１１】本発明の第二実施形態にかかる建築材（建築材支持具）の断面図を示したものである。
【図１２】本発明の第三実施形態にかかる建築材（建築材支持具）の断面図を示したものである。
【図１３】従来の建築材長さ調節構造を示した図である。
【符号の説明】
１　　床下材支持具（建築材）
１０支持脚体（雄ねじ部材）
１１雄ねじ部
１２軸部（本体軸部）
２０ベース部材
２５雌ねじ部
３０床下支持部材
３０床材支持部材（雌ねじ部材）
３５雌ねじ部
４０ストッパー
４１本体部
４２切替レバー（切替部材）
４１１　　　第一嵌合部
４１２　　　第二嵌合部
５０ａ、５０ｂ　係止部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a structure for adjusting the length and height of a building material such as an underfloor support (for example, a floor bundle), a beam, and a double floor.
[0002]
[Prior art]
Conventionally, as a structure for adjusting the length of a building material as described above, there is a structure described in Japanese Utility Model No. 3046733. As shown in FIG. 13, this building material is provided with a female screw 106 on the inner periphery and a cylindrical body 107 having a flange 108 formed at the lower end, and a predetermined distance between the cylindrical body 107 and the flange 108. A base member 102 provided with a reinforcing rib 109, an adjusting member 103 provided with an external thread 112 on the outer periphery and screwed to a female screw 106 of the base member 102, and fitted on the outer periphery of the base member 102 and the adjusting member 103, An annular stopper 105 for fixing the member.
[0003]
When the above-mentioned building material is used, the length of the building material is adjusted by the following method. First, the stopper 105 is inserted through the adjusting member 103 with the protrusion 116 of the stopper 105 fitted in the sliding groove 113 of the adjusting member 103. Next, the adjusting member 103 is screwed to the base member 102 with the stopper 105 raised from the base member 102 so that the stopper 105 does not contact the upper part of the reinforcing rib 109. Then, the entire length of the building material is shortened by screw propulsion, or the length is increased by retreating the building material, thereby adjusting the degree of screw propulsion until a desired length is obtained.
[0004]
[Problems to be solved by the invention]
The length adjustment of the building material is performed by relatively rotating the base member 102 and the adjusting member 103 which are screwed together. However, since the rotation operation is not restricted at all, there is a possibility that the base member 102 and the adjusting member 103 are turned too much when the building material is extended for a long time, and the two members come off. Further, even when the rotation operation is stopped shortly before detachment, if the length of the portion where the base member 102 and the adjusting member 103 are screwed (overlapping portion) is small, the joint strength between the two cannot be sufficiently secured, Particularly, in a building material that supports a large load such as a floor bundle, there is a possibility that sufficient strength to receive the load cannot be secured. Therefore, in order for the building material to support the load in the axial direction, it is necessary to secure the engagement between the male screw and the female screw to a certain length or more, and the length of the building material needs to be set to a certain length or less. However, in a conventional building material, the range in which the length of the building material can be set is difficult to understand, and it sometimes takes time to set the length of the building material within the settable range. Furthermore, there is a possibility that the screwing between the base member 102 and the adjusting member 103 may be accidentally removed. In this case, the screwing must be performed again. It was a burden.
[0005]
Therefore, the present invention provides a building material length adjusting structure capable of reliably preventing the length of the building material in the elongation direction from being excessively adjusted with a simple structure in order to prevent the above situation. The purpose is to do.
[0006]
[Means for Solving the Problems]
The present invention is a building material length adjusting structure for adjusting the length of a building material, wherein at least one end in the axial direction has a male screw portion having an external thread on an outer peripheral surface, and the male screw portion has A male screw member having a main body shaft portion having an outer diameter smaller than the maximum outer diameter of the male screw at an adjacent position, and a female screw portion having a cylindrical portion, on which an external screw of the male screw portion can be screwed on its inner peripheral surface. And a stopper having an inner peripheral surface fitted to the outer peripheral surface of the main body shaft portion of the male screw member and the outer peripheral surface of the female screw member, and the stopper is provided with a main body shaft of the male screw member. The first fitting portion having an inner diameter larger than the outer diameter of the portion and having a smaller inner diameter than the maximum outer diameter of the male screw portion, the outer peripheral surface of the female screw member is restricted from moving in the axial direction with respect to the male screw member, and Rotation relative to the internal thread member is allowed A second fitting portion that fits in a folded state, the axial end surface of the first fitting portion, and the axial end surface of the male screw portion abut on the male screw member from the abutting position. The relative rotation of the male screw member and the female screw member in the direction in which the female screw member extends is restricted.
[0007]
When the above-described building material length adjusting mechanism is used, the inner circumference of the first fitting portion of the stopper is smaller in diameter than the outer circumference of the male screw portion, so that when the stopper moves in the axial direction, The axial end surface of the first fitting portion and the axial end surface of the male screw portion are in contact with each other. At this time, since the relative movement in the axial direction between the stopper and the female screw member is regulated by the second fitting portion, the female screw member can move in the direction in which the building material further extends by the stopper. Absent. Therefore, it is possible to reliably prevent the length of the building material in the elongation direction from being excessively adjusted by mistake.
[0008]
The invention according to claim 2 is such that the stopper is switchable between a fixed state in which the relative movement of the male screw member and the female screw member is restricted and a released state in which the relative movement is permitted, and The female screw member is fitted to the female screw member, and the stopper in the released state allows the relative rotation between the stopper and the female screw member to restrict movement in the rotation axis direction with the female screw member. Fitted, and fitted to the male screw member so as to restrict the relative rotation between the stopper and the male screw member and to allow movement in the rotation axis direction with the male screw member. From this released state, the stopper and the stopper The stopper is switched to the fixed state by preventing relative rotation with the female screw member.
[0009]
In this case, in the released state, the stopper is relatively rotatable with the member provided with the female screw member, and is relatively movable in the axial direction with the member provided with the male screw member. Therefore, even when the stopper is fitted to the male screw member and the female screw member, screw propulsion is not hindered, and the length of the male screw member and the female screw member can be adjusted. Therefore, in such a case, it is not necessary to raise the stopper and perform the relative rotation as in the related art. Furthermore, it is possible to switch to the fixed state only by preventing relative rotation with the female screw member. In the case of the conventional structure shown in FIG. 13, after adjusting the degree of screw propulsion to a desired length in order to obtain a fixed state, the stopper 105 is moved in the axial direction to fit over the reinforcing rib 109. However, in the present invention, it is not necessary to move the stopper in the axial direction as in the above-described related art. Therefore, it is possible to further reduce the work load for adjusting the length.
[0010]
Further, as in the invention of claim 3, the stopper has a main body portion fitted to the outer peripheral portions of the male screw member and the female screw member, and a released state allowing relative rotation between the stopper and the female screw member. By providing a switching member that can be switched to a fixed state that regulates the relative rotation, it is possible to further reduce the labor for performing the switching operation.
[0011]
The invention according to claim 4 is characterized in that the stopper is formed by an elastic member, has a shape in which a part in the circumferential direction is divided, and elastically deforms the divided portion in a direction to expand the male screw member. And a construction material length adjusting structure that can be attached to and detached from the outer peripheral surface of the female screw member in the radial direction.
[0012]
In this case, after the male screw member and the female screw member are fitted, the stopper can be attached and fitted to the male screw member and the female screw member. Can be easily assembled.
[0013]
The invention according to claim 5 is a building material length adjusting structure for adjusting the length of a building material, wherein at least one end in the axial direction is formed with a male screw portion having a male screw on an outer peripheral surface, and A male screw member having a main body shaft portion having an outer diameter smaller than the maximum outer diameter of the male screw at a position adjacent to the male screw portion, and a cylindrical portion, and the male screw of the male screw portion can be screwed on the inner peripheral surface thereof. A female screw member having a large female screw portion formed thereon, and the inner circumference of the female screw member has a diameter larger than the outer diameter of the main body shaft portion of the male screw member, and a maximum outer diameter of the male screw portion. A locking portion having a small inner diameter is provided, and at a position where the axial end surface of the locking portion and the axial end surface of the male screw portion abut, in the direction in which the male screw member and the female screw member extend from the abutting position. Material length that restricts relative rotation between male and female screw members It is a section structure.
[0014]
When the above-described building material length adjusting mechanism is used, the inner diameter of the locking portion of the female screw member is smaller than the maximum outer diameter of the male screw portion, so that the male screw member is constructed with respect to the female screw member. When the material relatively moves in the extending direction and reaches a predetermined position, the axial end surface of the male screw portion and the axial end surface of the locking portion come into contact with each other, and the relative movement in the direction in which the building material further extends can be performed. Can not. Therefore, it is possible to reliably prevent the length of the building material in the elongation direction from being excessively adjusted by mistake.
[0015]
The invention according to claim 6 is a building material length adjusting structure for adjusting the length of a building material, wherein at least one of the axial ends has a male screw portion having a male screw on an outer peripheral surface. A member having a cylindrical portion, and having an internal thread formed on the inner peripheral surface thereof with a female screw portion to which the male screw of the male screw portion can be screwed, and on the tip side of the male screw portion of the male screw member, A locking portion having an outer diameter larger than the maximum outer diameter of the female screw portion is provided, and the axial end surface of the locking portion and the axial end surface of the female screw portion abut on each other. A construction material length adjusting structure in which relative rotation between the male screw member and the female screw member in the direction in which the member and the female screw member extend is regulated.
[0016]
When the building material length adjusting mechanism as described above is used, the locking portion of the male screw member has a diameter larger than the maximum outer diameter of the female screw of the female screw portion. When the building material relatively moves in the extending direction and reaches a predetermined position, the axial end surface of the locking portion and the axial end surface of the female screw come into contact with each other, and the relative movement in the direction in which the building material further extends can be performed. Can not. Therefore, it is possible to reliably prevent the length of the building material in the elongation direction from being excessively adjusted.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. However, the present invention is not limited to the following embodiments. In the present embodiment, an underfloor support (floor bundle) is described as an example of a building material. However, the present structure can be applied to other building materials (for example, a beam, a double-floor height adjustment structure, and the like). It is possible to use.
[0018]
First embodiment (see FIGS. 1 to 10)
As shown in FIG. 1, the underfloor support 1 of the present embodiment includes a support leg 10 (corresponding to a male screw member), a base member 20 (corresponding to a female screw member), and a floor support member 30 (corresponding to a female screw member). And a stopper 40. Then, the bottom surface of the base member 20 is in contact with the ground portion such as concrete or slab stone, and the flat portion 31 and the side portion 32 installed on the upper surface of the floor material support member 30 hold the underfloor material of the building. The underfloor portion of the building is supported by the underfloor support 1.
[0019]
As shown in FIG. 2, male threads 11 are provided at both ends of the support leg 10, and a base member 20 and a floor material support member 30 are screwed to the male threads 11. A stopper 40 (see FIG. 1) is attached so as to cover the outer periphery of the support leg 10 and the outer periphery of the base member 20, and the outer periphery of the support leg 10 and the outer periphery of the base member 20.
[0020]
Next, the support leg 10, the base member 20, and the floor material support member 30 will be described with reference to FIG.
[0021]
The support leg 10 is formed in a shaft shape, and has external thread portions 11, 11 formed on both outer peripheral ends thereof, and a shaft portion 12 formed on an outer peripheral portion other than the external thread portion 11. A sliding groove 13 (see FIG. 1) is provided to extend in the axial direction. The external thread 11 is formed so that its maximum outer diameter is larger than that of the shaft 12.
[0022]
The base member 20 is formed in a cylindrical shape, and is provided with a female screw portion 25 which can be screwed to the male screw portion 11 on the inner periphery thereof. In addition, a bottom surface 21 for supporting a load in contact with the ground is formed in a flange shape at one end (corresponding to a lower end in FIG. 2) of the base member 20. The uneven portion 26 is provided over the area. In a region adjacent to the uneven portion 26 (a lower region adjacent to the uneven portion 26 in FIG. 2), a concave portion 27 having a smaller diameter than the uneven portion 26 is provided over the entire circumference.
[0023]
The floor material support member 30 is formed in a tubular shape similarly to the base member 20, and the inner periphery thereof is provided with a female screw portion 35 which can be screwed to the male screw portion 11, similarly to the base member 20. A flat portion 31 having a substantially rectangular shape is provided at one end (corresponding to the upper end in FIG. 2) of the floor material supporting member 30, and side portions 32 are provided upright on two opposing sides of the flat portion 31. . Then, when the underfloor material of the building is placed on the flat surface portion 31, the underfloor material is held by the side surface portions 32. At the other end (corresponding to the lower end in FIG. 2), an uneven portion 36 is provided over the entire circumference in the same manner as the uneven portion of the base member 20, and the adjacent region is also similar to the base member 20. A concave portion 37 having a smaller diameter than the concave / convex portion 36 is provided over the entire circumference.
[0024]
The stopper 40 has a main body 41 and a switching lever 42 (corresponding to a switching member) as shown in FIG. Hereinafter, the main body 41 will be described with reference to FIGS. 3 (a) and 3 (b).
[0025]
The main body 41 has an annular shape in which a part in the circumferential direction is divided, and lever holding parts 414, 414 are provided at both ends of the divided part. The annular portion has a first fitting portion 411 having an inner diameter larger than the outer diameter of the shaft portion 12 of the support leg body 10 and smaller than the maximum outer diameter of the male screw portion 11. A second fitting portion 412 having an inner diameter larger than one fitting portion. On the inner periphery of the first fitting portion 411, there is provided a projection 416 extending in the axial direction and capable of fitting into the sliding groove 13 of the support leg 10. Further, a protrusion 413 is provided on the inner peripheral edge of the second fitting portion 412 so as to protrude toward the inner peripheral side. The lever holding portions 414 and 414 are provided with a lever fitting portion 415 formed in a slightly constricted U-shape. The material of the main body 41 is a material that can be elastically deformed, such as a synthetic resin.
[0026]
Next, the switching lever 42 will be described with reference to FIG. The switching lever 42 has an engagement member 421 and a lever portion 422. On one end side of the lever portion 422, holding portions 425 and 425 for holding the engaging member 421 from both sides are provided. The engagement member 421 is formed in a substantially L-shape, and one end thereof is connected to the lever portion 422. At the other end, an engaging portion 423 formed in an uneven shape is provided so as to be fitted to the uneven portion 26 of the base member 20. That is, the engaging portion 423 and the lever portion 422 are formed at an angle of approximately 90 degrees. By providing fulcrum shafts 423 and 423 from the bent portions of the engaging member 421 toward the holding portions 425 and 425, the engaging member 421 and the holding portions 425 and 425 are connected.
[0027]
Hereinafter, a method of assembling the underfloor support 1 will be described with reference to FIGS. 2, 5, and 6. In the following description, the assembly of the support leg 10 and the base member 20 is described. However, the assembly of the support leg 10 and the floor material support member 30 is substantially the same. Of the 30 components, portions corresponding to the components of the base member 20 will be described in parentheses, and redundant description thereof will be omitted.
[0028]
Step 1 (see FIG. 2): The male thread 11 of the support leg 10 is screwed to the female thread 25 (male thread 35) of the base member 20 (floor support member 30).
[0029]
Step 2 (see FIGS. 5 and 6): The body 41 of the stopper 40 is elastically deformed to widen the interval between the lever holding portions 414 and 414, and the body 41 is attached to the outer periphery of the support leg 10 and the base member 20 (floor). It is attached to the outer periphery of the material support member 30). At this time, as shown in FIG. 6, the first fitting portion 411 of the main body portion 41 is fitted to the support leg 10, and the second fitting portion 412 is fitted to the base member 20 (floor support member 30). I do. Specifically, the first fitting portion 411 and the support leg 10 cover the shaft portion 12 of the support leg 10, and the protrusion 416 fits into the slide groove 13 ( It is mounted as shown in FIG. The second fitting portion 412 and the base member 20 (floor support member 30) are configured such that the second fitting portion 412 covers the outer periphery of the uneven portion 26 (the uneven portion 36), and is provided on the inner periphery thereof. The portion 413 is mounted so as to fit into the concave portion 27 (the concave portion 37).
[0030]
Step 3 (see FIG. 6): The switching lever 42 is attached to the lever holding portion 414 of the main body 41. At this time, the switching lever 42 is attached to the lever holding portion 414 by fitting the fulcrum shaft 424 of the switching lever 42 to the lever fitting portion 415. In this case, the switching lever 42 is rotatable about the fulcrum shaft 424.
[0031]
Next, a method of adjusting the length of the underfloor support 1 will be described with reference to FIGS. FIGS. 7A and 7B show a state in which the stopper 40 is fitted so as to regulate the relative movement between the support leg 10 and the base member 20 (floor support member 30), that is, a fixed state. It is shown. In this state, the switching lever 42 has the engaging portion 423 of the engaging member 421 engaged with the concave / convex portion 26 (the concave / convex portion 36) of the base member 20 (floor support member 30), and the base member 20 ( The relative rotation between the floor material support member 30) and the stopper 40 is locked. In addition, since the relative rotation between the stopper 40 and the support leg 10 is locked via the protrusion 416 and the sliding groove 13, the relative rotation between the support leg 10 and the base member 20 (floor support member 30). Relative movement is regulated.
[0032]
A procedure for adjusting the length of the underfloor support 1 from the above state to the maximum length will be described below.
[0033]
Procedure 1 (see FIGS. 7 and 8): From the state shown in FIGS. 7A and 7B, the switching lever 42 is rotated about the fulcrum shaft 424 by pulling up the lever portion 422 of the switching lever 42. Then, the state shown in FIGS. 8A and 8B is obtained. At this time, the engagement portion 423 of the switching lever 42 moves downward along with the rotation, and comes off the uneven portion 26. That is, the engagement state between the engagement portion 423 of the switching lever 42 and the uneven portion 26 is released, and the relative rotation between the stopper 40 and the base member 20 (floor support member 30) becomes possible. The relative rotation between the body 10 and the base member 20 (floor support member 30) is also enabled (corresponding to the released state). The support leg 10 and the base member 20 (floor support member 30) are relatively rotated to perform screw propulsion.
[0034]
Procedure 2 (see FIG. 9): If the screw propulsion is continued, the inner diameter of the first fitting portion 411 of the stopper 40 is smaller than the maximum outer diameter of the male screw portion 11, so that the male screw portion 11 and the first The end face 411a of the fitting part 411 contacts. This abutment prevents the relative movement of the stopper 40 and the support leg 10 in the axial direction. In addition, since the convex portion 413 of the stopper 40 and the concave portion 27 (recess 37) of the base member 20 (floor support member 30) are fitted, the base member 20 (floor support member 30), the stopper 40 and Are also prevented from moving in the axial direction. Therefore, when the end surface 411a of the first fitting portion 411 abuts on the male screw portion 11, the base member 20 (floor support member 30) can move further in the direction in which the length of the underfloor support 1 extends. I cannot do it.
[0035]
Step 3 (see FIG. 10): The engaging portion 423 of the switching lever 42 is again lowered from the state of FIG. 9 by pulling down the lever portion 422 of the switching lever 42, and the uneven portion of the base member 20 (floor support member 30). 26 (an uneven portion 36) to lock the relative rotation between the base member 20 (floor support member 30) and the stopper 40.
[0036]
As described above, when the underfloor support 1 as described above is used, since the inner circumference of the first fitting portion 411 of the stopper 40 is smaller in diameter than the outer circumference of the male screw portion 11, the first fitting portion is provided. The end surface 411a of the support 411 and the axial end surface of the male screw portion 11 of the support leg 10 can be in contact with each other. Furthermore, since the relative movement in the axial direction between the stopper 40 and the base member 20 (floor support member 30) is regulated by the convex portion 413 of the second fitting portion 412, the end face of the first fitting portion 411 is restricted. When the male thread portion 11 abuts against the base member 411a, the base member 20 (floor support member 30) cannot move further in the direction in which the building material extends. Therefore, it is possible to reliably prevent the length of the building material in the elongation direction from being excessively adjusted.
[0037]
The stopper 40 is rotatable relative to the base member 20 (floor support member 30) in the released state as shown in Procedure 1 and FIG. 8, and relatively movable in the axial direction relative to the support leg 10. It is. Therefore, even when the stopper 40 is fitted to the support leg 10 and the base member 20 (floor support member 30), the screw propulsion is not hindered, and the length of the underfloor support 1 is adjusted. It is possible. Therefore, in such a case, it is not necessary to raise the stopper and perform the relative rotation as in the related art.
[0038]
Further, the relative rotation between the stopper 40 and the base member 20 (floor support member 30) can be prevented or permitted only by moving the switching lever 42 up and down. Further, the switching between the release state and the fixed state can be performed only by switching between preventing or permitting the relative rotation. Therefore, it is possible to further reduce the work load for adjusting the length.
[0039]
The stopper 40 is formed of a material that can be elastically deformed, and has a shape in which a part in the circumferential direction is divided.
[0040]
Therefore, the stopper 40 can be attached to and detached from the support leg 10 and the base member 20 (floor support member 30) from its radial direction by elastically deforming the divided portion in the direction in which it expands. Therefore, as shown in FIG. 5, after fitting the support leg 10 and the base member 20 (floor support member 30), the stopper 40 is attached to the support leg 10 and the base member 20 (floor support member 30). Since the fitting can be performed, it is easy to perform an assembling operation at the time of manufacturing the building material length adjusting structure.
[0041]
In the following embodiments, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof will not be repeated. Further, in the second and third embodiments, only the support leg 10 and the base member 20 are described. However, the floor member support member 30 also includes the base member 20 except for the flat part 31 and the side part 32. Since the same configuration as described above can be adopted, the description thereof is omitted.
[0042]
Second embodiment (see FIG. 11)
As shown in FIG. 11, the underfloor support 1 of the present embodiment includes a support leg 10 and a base member 20. The male screw portion 11 provided at the axial end of the support leg 10 is formed so that the maximum outer diameter thereof is larger than that of the shaft portion 12. In addition, portions other than the illustrated male screw portion 11 are smaller in diameter than a locking portion 50a described later, and can be loosely fitted to the locking portion 50a.
[0043]
The base member 20 is formed in a tubular shape, and at one end thereof (corresponding to a lower end in this drawing), a bottom surface 21 for supporting a load in contact with the ground is formed in a flange shape. On the inner periphery thereof, a female screw portion 25 capable of being screwed to the male screw portion 11, a lid fitting portion 21 a formed at an axial end on which the bottom surface 21 is provided, and a shaft on the opposite side. And a locking portion 50a formed at the end in the direction. The locking portion 50 a has an inner diameter larger than the outer diameter of the shaft portion 12 and smaller than the maximum outer diameter of the male screw portion 11.
[0044]
The procedure for adjusting the length of the underfloor support 1 will be described below.
[0045]
First, with respect to the support leg 10, the axial end opposite to the illustrated male screw 11 is placed on the inner periphery of the base member 20 from the lid fitting portion 21 a side, and the end surface of the male screw 11 is formed with the female screw 25. Continue inserting until it touches the end face.
[0046]
Next, the male screw part 11 and the female screw part 25 are screwed together, and screw propulsion is performed until the end face of the male screw part 11 comes into contact with the locking part 50a as shown in FIG.
[0047]
In this case, since the inner diameter of the locking portion 50a is smaller than the maximum outer diameter of the male screw portion 11, the end face of the male screw portion 11 comes into contact with the locking portion 50a, and further screw propulsion cannot be performed. That is, the support leg 10 and the base member 20 cannot rotate relative to each other in the direction in which the underfloor support 1 extends. Therefore, it is possible to reliably prevent the length of the underfloor support 1 from being excessively adjusted in the extending direction.
[0048]
As a next procedure, the lid 221 can be fitted to the lid fitting portion 21a. In this case, even if the screw propulsion is performed in the direction in which the underfloor support 1 contracts, the end face of the support leg 10 abuts on the lid 221, and the lid 221 is further moved in the direction in which the underfloor support 1 contracts. This prevents screw propulsion. Therefore, it is possible to prevent the screwing of the male screw part 11 and the female screw part 25 from being mistakenly removed.
[0049]
Third embodiment (see FIG. 12)
This embodiment is obtained by changing the following configuration from the second embodiment.
[0050]
At the tip of the male screw portion 11 of the support leg 10, a locking portion 50 b whose diameter is larger than that of the female screw portion 25 of the base member 20 is formed.
[0051]
Further, on the inner periphery of the base member 20, in order from the bottom surface side, a lid fitting portion 21a, a fitting insertion portion 25a having a diameter larger than that of the locking portion 50b, and a female screw portion 25 capable of being screwed to the male screw portion 11. And are provided.
[0052]
Then, as for the procedure for adjusting the length of the underfloor support 1, first, as in the second embodiment, the support leg 10 is inserted from the lid fitting portion 21 a side, and the end face of the male screw portion 11 becomes the female screw portion 25. Continue the insertion work until it comes into contact with the end face of. Then, the male screw portion 11 and the female screw portion 25 are screwed together, and screw propulsion is performed until the end of the locking portion 50b comes into contact with the end of the female screw portion 25 as shown in FIG.
[0053]
In this case, since the locking portion 50b has a larger diameter than the female screw portion 25, the end of the locking portion 50b abuts against the end face of the female screw portion 25, and further screw propulsion cannot be performed. That is, similarly to the second embodiment, the support leg 10 and the base member 20 cannot further rotate relative to each other in the direction in which the underfloor support 1 extends. Therefore, it is possible to reliably prevent the length of the underfloor support 1 from being excessively adjusted in the extending direction.
[0054]
Other embodiments
(1) The male screw portion 11 is necessarily provided on the support leg 10, and the female screw portion 25 (female screw portion 35), the uneven portion 26 (the uneven portion 36), and the concave portion 27 (the concave portion 37) are provided on the base member 20 (floor material supporting member 30). ) Is not required. For example, it is also possible to provide a female screw portion, an uneven portion, and a concave portion on the support leg 10, and provide a male screw portion on the base member 20 (floor support member 30).
[0055]
(2) The present invention is not limited to the underfloor support as described above, and the present structure can be used for other building materials such as beams.
[0056]
(3) As the switching member of the present invention, instead of the switching lever 42, a fastening jig such as a bolt or a nut is attached between the lever fitting portions 415 and 415, and the fastening jig is tightened. By loosening, it is possible to switch between the fixed state and the released state.
[0057]
(4) The female screw member of the present invention does not necessarily need to be provided at both ends of the support leg, and may be provided on only one side. For example, the support leg 10 and the base member 20 or the support leg 10 and the flooring support member 30 may be integrally formed, and the number of female screw members may be one.
[0058]
(5) In the second embodiment, when the support leg 10 is inserted into the inner periphery of the base member 20, it is not always necessary to perform the insertion from the side of the lid fitting portion 21a. For example, it is also possible to forcibly elastically deform the locking portion 50a of the base member 20 and insert the support leg 10 from the locking portion 50a side. Further, the locking leg 50a is formed as a tongue-like elastic piece whose tip is bent toward the inner inner side (lower side in FIG. 11), so that the support leg 10 is moved from the locking portion 50a side. It is also possible to allow insertion. However, when the support leg 10 is inserted into the inner periphery of the base member 20, it is preferable to perform the insertion from the side of the lid fitting portion 21a because the female screw portion 25 can be inserted without damaging the female screw portion 25. In addition, even when the support leg 10 is inserted into the inner periphery of the base member 20 from the lid fitting portion 21a side, for example, the support leg 10 is fitted with the lid 221 by fitting the lid 221 to the lid fitting portion 21a. It is possible to prevent accidental removal from the attachment portion 21a side.
[0059]
(6) In the third embodiment, similarly to the second embodiment, when the support leg 10 is inserted into the inner periphery of the base member 20, it is not always necessary to perform the insertion from the lid fitting portion 21a side. For example, it is also possible to forcibly elastically deform the locking portion 50b of the support leg 10 and insert the support leg 10 from the locking portion 50a side. Further, the locking shaft 11 is formed by a tongue-shaped elastic piece whose edge is bent toward the base end side (upward in FIG. 12) of the support leg body 10, as in the second embodiment. The support leg 10 can be inserted from the female screw portion 25 side (in FIG. 12, insertion from the upper side is shown). Also in this case, when the support leg 10 is inserted into the inner periphery of the base member 20, it is performed from the side of the lid fitting portion 21 a for the same reason as described in (5) of the above “Other Embodiments”. More preferred.
[0060]
【The invention's effect】
As described above, according to the first aspect of the present invention, since the inner periphery of the first fitting portion of the stopper is smaller in diameter than the outer periphery of the male screw portion, when the stopper moves in the axial direction, The axial end surface of the fitting portion and the axial end surface of the male screw portion are in contact with each other, and further, the relative movement in the axial direction between the stopper and the female screw member is regulated by the second fitting portion, Due to the stopper, the female screw member cannot move further in the direction in which the building material extends. Therefore, it is possible to reliably prevent the length of the building material in the elongation direction from being excessively adjusted by mistake.
[0061]
Further, in the invention according to claim 2, the stopper does not hinder the screw propulsion even when the stopper is fitted to the male screw member and the female screw member, and the length of the male screw member and the female screw member is long. It is possible to adjust the length. Therefore, in such a case, it is not necessary to raise the stopper and perform the relative rotation as in the related art. Furthermore, it is possible to switch to the fixed state only by preventing relative rotation with the female screw member. Therefore, it is possible to further reduce the work load for adjusting the length.
[0062]
According to the fifth aspect of the present invention, since the inner diameter of the locking portion of the female screw member is smaller than the maximum outer diameter of the male screw portion, the male screw member and the female screw member extend in the direction in which the building material extends. When the relative movement is made, the axial end surface of the male screw portion and the axial end surface of the locking portion come into contact with each other, and the relative movement in the direction in which the building material extends further cannot be performed. Therefore, the same effect as the first aspect can be obtained.
[0063]
According to the invention of claim 6, since the locking portion of the male screw member has a diameter larger than the maximum outer diameter of the female screw of the female screw portion, the direction in which the building material extends between the male screw member and the female screw member. When the relative movement is made, the axial end face of the locking portion and the axial end face of the female screw come into contact with each other, and the relative movement in the direction in which the building material extends further cannot be performed. Therefore, the same effects as those of the first and fifth aspects can be obtained.
[Brief description of the drawings]
FIG. 1 shows an entire building material (building material support) according to a first embodiment of the present invention.
FIG. 2 shows a male screw member and a female screw member of the building material according to FIG. 1;
3A is a plan view showing a main body of the stopper for building materials according to FIG. 1, and FIG. 3B is a front view of the main body with a partial cross section.
4 is a perspective view showing a switching member corresponding to the stopper shown in FIG.
FIG. 5 is a view showing a process of assembling the building material according to FIG. 1;
FIG. 6 is a view showing a process of assembling the building material according to FIG. 1;
7A and 7B are diagrams showing a procedure for adjusting the length of the building material according to FIG. 1, wherein FIG. 7A is a plan view thereof, and FIG. 7B is a sectional view taken along the line AA ′ of FIG.
8A is a diagram showing a procedure for adjusting the length of the building material according to FIG. 1, FIG. 8A is a plan view thereof, and FIG. 8B is a cross-sectional view taken along the line AA ′ of FIG. FIG.
FIG. 9 is a plan sectional view showing a procedure for adjusting the length of the building material according to FIG. 1;
FIG. 10 is a plan sectional view showing a procedure for adjusting the length of a building material according to FIG. 1;
FIG. 11 is a cross-sectional view of a building material (building material support) according to a second embodiment of the present invention.
FIG. 12 is a sectional view of a building material (building material support) according to a third embodiment of the present invention.
FIG. 13 is a view showing a conventional construction material length adjusting structure.
[Explanation of symbols]
1 Underfloor support (building material)
10 supporting legs (male screw member)
11 male thread
12 axes (body axis)
20 base members
25 female thread
30 underfloor support members
30 floor material support member (female screw member)
35 female thread
40 stopper
41 body
42 switching lever (switching member)
411 First fitting part
412 Second fitting part
50a, 50b locking part

Claims

A building material length adjusting structure for adjusting the length of the building material,
At least one axial end has a male screw portion having an external thread on the outer peripheral surface, and has a main body shaft portion having an outer diameter smaller than the maximum outer diameter of the external screw at a position adjacent to the external screw portion. Male screw member,
A female screw member having a cylindrical portion, on the inner peripheral surface of which a female screw portion capable of screwing the male screw of the male screw portion is formed,
A stopper having an inner peripheral surface fitted to the outer peripheral surface of the main body shaft portion of the male screw member and the outer peripheral surface of the female screw member,
The stopper has a first fitting portion having an inner diameter larger than the outer diameter of the main body shaft portion of the male screw member and smaller than the maximum outer diameter of the male screw portion, and the female screw member on the outer peripheral surface of the female screw member. And a second fitting portion that fits in a state in which movement in the axial direction with respect to is restricted, and relative rotation with respect to the internal thread member is allowed,
At the position where the axial end surface of the first fitting portion and the axial end surface of the male screw portion abut, the relative position of the male screw member and the female screw member in the direction in which the male screw member and the female screw member extend from the abutting position A construction material length adjustment structure characterized in that rotation is regulated.

The stopper is fitted to the male screw member and the female screw member so as to be switchable between a fixed state in which the relative movement of the male screw member and the female screw member is restricted and a released state in which the relative movement is allowed. ,
The stopper in the released state is fitted to the female screw member so as to allow relative rotation between the stopper and the female screw member to restrict movement in the rotational axis direction with the female screw member, and Fitted to the male screw member to regulate the relative rotation with the male screw member and to allow movement in the rotation axis direction with the male screw member,
The construction material length adjusting structure according to claim 1, wherein the stopper is switched to the fixed state by preventing relative rotation between the stopper and the female screw member from the released state.

The stopper has a main body fitted to the outer peripheral surfaces of the male screw member and the female screw member,
The building material length according to claim 2, further comprising: a switching member that can be switched between a released state that allows relative rotation between the stopper and the female screw member and a fixed state that regulates the relative rotation. Adjustment structure.

The stopper is formed by an elastic member, and has a shape in which a part of the stopper in the circumferential direction is divided,
The building according to any one of claims 1 to 3, wherein the cut portion is elastically deformed in a direction in which the cut portion is expanded, so that the outer peripheral surfaces of the male screw member and the female screw member can be attached to and detached from the radial direction. Material length adjustment structure.

A building material length adjusting structure for adjusting the length of the building material,
At least one axial end has a male screw portion having an external thread on the outer peripheral surface, and has a main body shaft portion having an outer diameter smaller than the maximum outer diameter of the external screw at a position adjacent to the external screw portion. Male screw member,
A female part having a cylindrical part, on the inner peripheral surface of which a female screw part capable of screwing the male screw of the male screw part is formed,
On the inner circumference of the female screw member, a locking portion having a larger diameter than the outer diameter of the main body shaft portion of the male screw member and having an inner diameter smaller than the maximum outer diameter of the male screw portion is provided,
At a position where the axial end surface of the locking portion and the axial end surface of the male screw portion abut, relative movement between the male screw member and the female screw member in a direction in which the male screw member and the female screw member extend from the abutting position. A construction material length adjustment structure characterized by being regulated.

A building material length adjusting structure for adjusting the length of the building material,
A male screw member formed with a male screw portion having a male screw on an outer peripheral surface at at least one axial end portion,
A female part having a cylindrical part, on the inner peripheral surface of which a female screw part capable of screwing the male screw of the male screw part is formed,
A locking portion having an outer diameter larger than the maximum outer diameter of the female screw of the female screw portion is provided on the distal end side of the male screw portion of the male screw member,
At the position where the axial end surface of the locking portion and the axial end surface of the female screw portion abut, relative movement between the male screw member and the female screw member in a direction in which the male screw member and the female screw member extend from the abutting position is performed. A construction material length adjustment structure characterized by being regulated.