JP6169046B2 - Joint structure between pit frames - Google Patents
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- JP6169046B2 JP6169046B2 JP2014117852A JP2014117852A JP6169046B2 JP 6169046 B2 JP6169046 B2 JP 6169046B2 JP 2014117852 A JP2014117852 A JP 2014117852A JP 2014117852 A JP2014117852 A JP 2014117852A JP 6169046 B2 JP6169046 B2 JP 6169046B2
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Description
本発明は、ピットの開口縁部を縁取るようにその開口縁部に配設されるピット枠の相互間を結合する、ピット枠間のジョイント構造に関する。 The present invention relates to a joint structure between pit frames that joins pit frames arranged at the opening edge so as to frame the opening edge of the pit.
上記ピット枠の、ピット開口とは反対側の側面に、ピット枠の長手方向に延びる係止溝が形成され、相隣なるピット枠の隣接端部間が、その間に跨がるように係止溝に差込み可能なジョイント部材を介して結合される、ピット枠間の結合構造は従来公知である(下記特許文献1を参照)。
A locking groove extending in the longitudinal direction of the pit frame is formed on the side of the pit frame opposite to the pit opening, and the adjacent pit frames are locked so as to straddle between adjacent ends. A coupling structure between pit frames coupled via a joint member that can be inserted into a groove is conventionally known (see
ところが上記従来構造では、ピット枠の製造工場又は建築現場において、隣り合うピット枠の端部間に跨がるよう係止溝に差し込んだジョイント部材を、係止溝内面に裏板を当てがった状態でボルトにより係止溝に締結、固定するようにしていたので、その作業前にジョイント部材にボルトを予め螺挿しておく必要があり、そのねじ加工やボルトを取付けたり締め込んだりする作業や、係止溝内面に裏板をセットする作業等が面倒で、作業能率が悪い等の問題がある。 However, in the conventional structure described above, the joint member inserted into the locking groove so as to straddle between the ends of adjacent pit frames at the pit frame manufacturing factory or construction site, and the back plate is applied to the inner surface of the locking groove. Since the bolt was fastened and fixed to the locking groove with the bolt, it was necessary to screw the bolt into the joint member in advance before the work, and the screw processing and the work of installing and tightening the bolt In addition, there is a problem that the work of setting the back plate on the inner surface of the locking groove is troublesome and the work efficiency is poor.
本発明は、上記に鑑み提案されたもので、従来構造の前記問題を簡単な構造で解決できるようにした、ピット枠間のジョイント構造を提供することを目的とする。 The present invention has been proposed in view of the above, and an object of the present invention is to provide a joint structure between pit frames that can solve the above-described problems of the conventional structure with a simple structure.
前記目的を達成するために、本発明は、ピットの開口縁部に、その開口縁部に沿って縦列する複数のピット枠が配設され、その各ピット枠の、ピット開口とは反対側の側面には、ピット枠の長手方向に延びる係止溝が形成され、相隣なるピット枠の隣接端部間が、その間に跨がるように前記係止溝に装着可能なジョイント部材を介して結合される、ピット枠間のジョイント結合構造において、前記ジョイント部材は、前記係止溝に遊隙を存して嵌合可能なジョイント本体と、そのジョイント本体に基部が連結される弾性部材とを備えており、前記弾性部材は、これの自由端部を前記係止溝に摺動可能に係合させ且つ該弾性部材を弾性変形させることで生じる弾発力により、その係止溝の内面に前記ジョイント本体を圧接させるものであり、前記ジョイント本体は、帯状の板材より構成されていて、そのジョイント本体を縦通する浅い凹溝を一側面に有すると共に、その他側面には前記凹溝に対応した凸条部を有しており、前記凹溝に前記弾性部材の前記基部が相対回動不能に嵌合した状態で該基部と前記ジョイント本体間が結合されることを第1の特徴とする。 In order to achieve the above object, according to the present invention, a plurality of pit frames arranged in a row along an opening edge of the pit are arranged on the opening edge of the pit, and each pit frame is opposite to the pit opening. A locking groove extending in the longitudinal direction of the pit frame is formed on the side surface, and a joint member that can be attached to the locking groove so as to straddle between adjacent end portions of adjacent pit frames. In the joint coupling structure between pit frames to be coupled, the joint member includes a joint body that can be fitted with a gap in the locking groove, and an elastic member having a base connected to the joint body. with which the elastic member, the elastic force generated by the free end of which can be slidably engaged thereby and elastically deforming the elastic member with the locking groove, the inner surface of the locking groove It is intended for pressing the joint body, before The joint body is composed of a strip-shaped plate material, and has a shallow groove that vertically passes through the joint body on one side surface, and has a ridge portion corresponding to the groove on the other side surface, A first feature is that the base portion and the joint body are coupled to each other in a state where the base portion of the elastic member is fitted in the concave groove so as not to be relatively rotatable .
また本発明は、第1の特徴に加えて、板ばねより成る前記弾性部材は、それの基部が自由端部よりも前記ジョイント本体の端部寄りに位置すると共に、その基部と自由端部との間が、その基部から自由端部に向かって徐々に立ち上がる***部を介して接続されることを第2の特徴とする。 According to the present invention, in addition to the first feature, the elastic member made of a leaf spring has a base portion located closer to an end portion of the joint body than a free end portion, and the base portion and the free end portion. The second feature is that the gaps are connected via a raised portion that gradually rises from the base portion toward the free end portion.
また本発明は、第1又は第2の特徴に加えて、前記ピット枠は、上壁部及び下壁部の一端相互を鉛直壁で一体に結合して横断面コ字状に形成されたチャンネル枠部を一体に備えていて、それら上壁部及び下壁部並びに鉛直壁で前記係止溝が形成され、前記上壁部及び下壁部の各内端には、前記係止溝の開口部を狭めるように互いに接近する側に延びる一対の係止爪部がそれぞれ一体に連設され、前記ジョイント本体及び前記弾性部材の何れか一方が前記鉛直壁に、またその何れか他方が前記一対の係止爪部にそれぞれ圧接することを第3の特徴とする。 Further, according to the present invention, in addition to the first or second feature, the pit frame has a channel formed in a U-shaped cross section by integrally connecting one end of the upper wall portion and the lower wall portion with a vertical wall. A frame portion is integrally provided, and the locking groove is formed by the upper wall portion, the lower wall portion, and the vertical wall, and an opening of the locking groove is formed at each inner end of the upper wall portion and the lower wall portion. A pair of locking claws extending toward each other so as to narrow the portion are integrally connected, and either one of the joint body or the elastic member is connected to the vertical wall, and the other is connected to the pair. A third feature is that each of the locking claws is pressed into contact with each other .
本発明の第1の特徴によれば、ジョイント部材は、これに基部を連結した弾性部材の自由端部を係止溝に係合させて弾性部材を弾性変形させながら、ジョイント本体を、相隣なるピット枠の隣接端部間に跨がるよう係止溝に単に差し込むだけでよく、これにより、弾性部材の弾発力でジョイント本体を係止溝の内面に圧接させることができて、ジョイント本体を相隣なる両ピット枠(係止溝内面)に各々摩擦連結可能となり、両ピット枠間がジョイント部材を介して結合される。従って、ジョイント部材はその構造が簡素化されてコスト節減が図られるだけでなく、裏板も不要となって取扱いが頗る簡便となり、ジョイント部材によるピット枠間の結合作業の能率向上に大いに寄与することができる。 According to the first feature of the present invention, the joint member is configured such that the joint body is adjacent to each other while the elastic member is elastically deformed by engaging the free end of the elastic member having the base connected thereto with the locking groove. Simply insert it into the locking groove so as to straddle between the adjacent ends of the pit frame, so that the joint body can be brought into pressure contact with the inner surface of the locking groove by the elastic force of the elastic member. The main body can be frictionally connected to both adjacent pit frames (the inner surfaces of the locking grooves), and the pit frames are connected to each other via a joint member. Therefore, not only the structure of the joint member is simplified and the cost is reduced, but also the back plate is not required, and the handling becomes simple and greatly contributes to the improvement of the efficiency of the joint work between the pit frames by the joint member. be able to.
また、ジョイント本体が帯状の板材より構成されていて、そのジョイント本体を縦通する浅い凹溝を一側面に有すると共に、その他側面には前記凹溝に対応した凸条部を有しており、その凹溝に弾性部材の基部が相対回動不能に嵌合されるので、帯状板材よりなるジョイント本体が、前記凹溝及び凸条部に対応した一対の段部を有することで、その剛性強度を高めることができ、しかもその凹溝が弾性部材に対する回り止め手段に兼用されることで、弾性部材基部とジョイント本体間の結合構造の簡素化に寄与することができる。In addition, the joint body is made of a strip-shaped plate material, and has a shallow groove on one side that passes through the joint body on one side, and has a ridge corresponding to the groove on the other side, Since the base portion of the elastic member is fitted in the concave groove so as not to be relatively rotatable, the joint main body made of a strip-shaped plate material has a pair of step portions corresponding to the concave groove and the ridge portion, so that the rigidity strength is increased. In addition, since the concave groove is also used as a detent means for the elastic member, it is possible to contribute to simplification of the coupling structure between the elastic member base and the joint body.
また特に第2の特徴によれば、前記弾性部材は、これを板ばねより構成したことで、製造容易となりコスト節減が図られる。しかもこの弾性部材は、それの基部が自由端部よりもジョイント本体の端部寄りに位置すると共に、その基部と自由端部との間が、その基部から自由端部に向かって徐々に立ち上がる***部を介して接続されるので、ジョイント本体を係止溝に差し込む際に、板ばねよりなる弾性部材の自由端部及び***部が係止溝の軸方向開口端に引っ掛かりにくくなり、作業性が頗る良好となる。 In particular, according to the second feature, since the elastic member is constituted by a leaf spring, it is easy to manufacture and the cost is reduced. Moreover, this elastic member has a bulge in which the base portion thereof is positioned closer to the end portion of the joint body than the free end portion, and the base portion and the free end portion gradually rise from the base portion toward the free end portion. Therefore, when the joint body is inserted into the locking groove, the free end portion and the raised portion of the elastic member made of a leaf spring are not easily caught by the axial opening end of the locking groove, and workability is improved. Become good.
また特に第3の特徴によれば、ピット枠に設けたチャンネル枠部の鉛直壁とこれに対向する一対の係止爪部とに、ジョイント本体と弾性部材とを容易且つ的確に係合可能となるから、ジョイント部材によるピット枠間結合作業の作業性を更に向上させることができる。 In particular, according to the third feature, the joint body and the elastic member can be easily and accurately engaged with the vertical wall of the channel frame portion provided in the pit frame and the pair of locking claws facing the channel wall. Therefore, the workability of the joint work between pit frames by the joint member can be further improved .
本発明の実施の形態を、添付図面により以下に具体的に説明する。 Embodiments of the present invention will be specifically described below with reference to the accompanying drawings.
図1に示すように、建物内又は建物外において、基礎B上にはコンクリートCRの打設により水平な歩行面fが形成されており、その歩行面fには溝状のピットPが凹設される。このピットPは、必要に応じて種々の用途、例えば配線用、排水用、物品収納用等の用途に用いられるものであり、そのピットPの開口縁部には、その開口縁部を体裁よく縁取るように開口縁部に沿って縦列する複数条のピット枠F…が配設される。 As shown in FIG. 1, a horizontal walking surface f is formed on the foundation B by placing concrete CR inside or outside the building, and a groove-like pit P is recessed in the walking surface f. Is done. The pit P is used for various purposes as required, for example, for wiring, drainage, and article storage. The opening edge of the pit P is shaped like the opening. A plurality of pit frames F ... are arranged in a row along the opening edge so as to be bordered.
図2〜図7を併せて参照して、各ピット枠Fの、ピット開口Oとは反対側(即ちピット周壁と対向する側)の側面には、ピット枠Fの長手方向に延びる係止溝Cgが形成される。そして、相隣なるピット枠Fの隣接端部間が、その間に跨がるように係止溝Cgに装着されるジョイント部材J,J′を介して着脱可能に結合される。尚、前記ジョイント部材には、ピットPの直線部分に対応するジョイント部材Jと、ピットPのコーナ部分に対応するジョイント部材J′とが含まれる。 2 to 7 together, a locking groove extending in the longitudinal direction of the pit frame F is formed on the side surface of each pit frame F opposite to the pit opening O (that is, the side facing the pit peripheral wall). Cg is formed. The adjacent end portions of the adjacent pit frames F are detachably coupled via joint members J and J ′ mounted in the locking grooves Cg so as to straddle between the adjacent end portions. The joint member includes a joint member J corresponding to the straight portion of the pit P and a joint member J ′ corresponding to the corner portion of the pit P.
各ピット枠Fは、上壁部Cu及び下壁部Clの一端相互を鉛直壁Cvで一体に結合して横断面コ字状に形成されたチャンネル枠部Cと、そのチャンネル枠部Cの鉛直壁Cv外面に一体に連設されて水平に延びる、ゴムシート1付きの蓋載せ枠部Dとを少なくとも一体に備える。そして、その上壁部Cu及び下壁部Clの内端には、互いに接近する側に(即ち後述する係止溝Cgの開放面を狭めるように)延びる上下一対の係止爪部Cuf,Clfがそれぞれ一体に連設される。
Each pit frame F includes a channel frame portion C formed in a U-shaped cross section by integrally joining one end of an upper wall portion Cu and a lower wall portion Cl with a vertical wall Cv, and a vertical direction of the channel frame portion C. The lid mounting frame portion D with the
また蓋載せ枠部Dの上面には、ピットPの上端開口を塞ぐピット蓋Tが、前記ゴムシート1を介して載置、支持され、その支持状態でピット蓋Tの上面は、前記歩行面fと面一に連続して歩行面の一部を構成する。
A pit lid T that closes the upper end opening of the pit P is placed and supported on the upper surface of the lid mounting frame D via the
而してチャンネル枠部Cの内側面、即ちピット開口Oと反対側の側面には、チャンネル枠部Cの前記した上壁部Cu及び下壁部Cl、上下一対の係止爪部Cuf,Clf並びに鉛直壁Cvにより係止溝Cgが形成される。尚、このような係止爪部Cuf,Clfを設ける代わりに、係止溝Cg自体を、溝幅が開放面に向かって徐々に狭くなる所謂アリ溝状に形成することも可能である。 Thus, on the inner side surface of the channel frame portion C, that is, the side surface opposite to the pit opening O, the above-mentioned upper wall portion Cu and lower wall portion Cl of the channel frame portion C and a pair of upper and lower locking claws Cuf, Clf. In addition, a locking groove Cg is formed by the vertical wall Cv. Instead of providing such locking claws Cuf and Clf, it is also possible to form the locking groove Cg itself in a so-called dovetail shape in which the groove width gradually narrows toward the open surface.
ピットPの直線部分において相隣なるピット枠Fの隣接端部間を結合するためのジョイント部材Jは、係止溝Cgに遊隙を存して嵌合可能な帯板状の金属製ジョイント本体Jmと、そのジョイント本体Jmに基部Sbが連結されると共に係止溝Cgの内面(図示例では内底面、即ち前記鉛直壁部Cvの内面)に先部即ち自由端部Saが摺動可能に係合し得る一対の弾性部材Sとを備えている。そして、弾性部材Sは、これの自由端部Saを係止溝Cgに係合させ且つ弾性部材Sを弾性変形させることで生じる弾発力で、ジョイント本体Jmを係止溝Cgの内面(図示例では係止溝Cgの開放端縁、即ち上下の係止爪部Cuf,Clfの内面)に圧接させることにより、ジョイント本体Jmが相隣なるピット枠Fの各々に摩擦連結される。尚、弾性部材Sの基部Sbをジョイント本体Jmに連結する連結手段は、図示例のリベット2に限定されず、種々の連結手段(例えばボルト、溶接手段、カシメ手段、接着手段等)から任意に選択可能である。
A joint member J for connecting adjacent ends of adjacent pit frames F in a straight portion of the pit P is a strip-shaped metal joint body that can be fitted with a clearance in the locking groove Cg. The base Sb is connected to Jm and its joint body Jm, and the tip, that is, the free end Sa is slidable on the inner surface of the locking groove Cg (in the illustrated example, the inner bottom surface, that is, the inner surface of the vertical wall portion Cv). And a pair of elastic members S that can be engaged. The elastic member S has an elastic force generated by engaging the free end portion Sa of the elastic member S with the locking groove Cg and elastically deforming the elastic member S, so that the joint body Jm is connected to the inner surface of the locking groove Cg (see FIG. In the illustrated example, the joint body Jm is frictionally connected to each adjacent pit frame F by being brought into pressure contact with the open end edge of the locking groove Cg, that is, the inner surfaces of the upper and lower locking claws Cuf and Clf. The connecting means for connecting the base Sb of the elastic member S to the joint body Jm is not limited to the
前記弾性部材Sは、図示例では中間部を屈曲させた帯板状の金属(例えばバネ鋼)製の板ばねより構成される。即ち、この弾性部材Sは、それの基部Sbが自由端部Saよりもジョイント本体Jmの端部寄りに位置すると共に、その基部Sbと自由端部Saとの間が、基部Sbから自由端部Saに向かって徐々に立ち上がる(即ちジョイント本体Jmから徐々に離間するようジョイント本体Jmに対し斜めに起立する)***部Smを介して接続される。 In the illustrated example, the elastic member S is composed of a leaf spring made of a band plate-like metal (for example, spring steel) having a bent middle portion. That is, the elastic member S has a base Sb positioned closer to the end of the joint main body Jm than the free end Sa, and a space between the base Sb and the free end Sa extends from the base Sb to the free end. It is connected via a raised portion Sm that gradually rises toward Sa (that is, rises obliquely with respect to the joint body Jm so as to be gradually separated from the joint body Jm).
また帯状の平板材より成る前記ジョイント本体Jmは、これを縦通する浅い凹溝3を一側面に有すると共に、その他側面には該凹溝3に対応した扁平な凸条部4を有している。そして、その凹溝3に弾性部材Sの基部Sbが相対回動不能に嵌合した状態で、該基部Sbとジョイント本体Jm間が結合される。かくして、帯状板材よりなるジョイント本体Jmは、凹溝3及び凸条部4に対応した一対の段部を有することで、その剛性強度が効果的に高められ、しかもその凹溝3が弾性部材Sに対する回り止め手段に兼用されるため、弾性部材Sの基部Sbとジョイント本体Jm間の結合構造の簡素化が図られる。
Further, the joint body Jm made of a strip-shaped flat plate has a shallow
そして、前記したジョイント部材Jを係止溝Cg内にセットした状態で、ジョイント本体Jmと、弾性変形状態に置かれる弾性部材Sの自由端部Saとは、その何れか一方(図示例では後者Sa)がチャンネル枠部Cの鉛直壁Cvの内面に、またその何れか他方(図示例では前者Jm)が、上下の係止爪部Cuf,Clfの内面にそれぞれ圧接される。これにより、相隣なるピット枠F間が、その両ピット枠Fの各々に摩擦連結されたジョイント部材Jを介して結合される。尚、図4,6の二点鎖線は、自由状態の弾性部材Sを示している。 Then, with the joint member J set in the locking groove Cg, either the joint body Jm or the free end portion Sa of the elastic member S placed in an elastically deformed state (the latter in the illustrated example). Sa) is in pressure contact with the inner surface of the vertical wall Cv of the channel frame portion C, and one of them (the former Jm in the illustrated example) is in pressure contact with the inner surfaces of the upper and lower locking claws Cuf and Clf. As a result, the adjacent pit frames F are connected to each other through the joint members J frictionally connected to the pit frames F. 4 and 6 indicate the elastic member S in a free state.
尚、図示例とは反対に、弾性部材Sの自由端部Saを係止溝Cgの開放端縁即ち上下の係止爪部Cuf,Clfの内面に圧接させ、またジョイント本体Jmをチャンネル枠部Cの鉛直壁Cvの内底面に圧接させることも可能であり、この場合には、弾性部材Sの自由端部Saの幅を上下の係止爪部Cuf,Clf間の間隔(即ち係止溝Cgの開放面の幅)よりも十分広く設定する必要がある。 Contrary to the illustrated example, the free end portion Sa of the elastic member S is brought into pressure contact with the open end edge of the locking groove Cg, that is, the inner surfaces of the upper and lower locking claws Cuf and Clf, and the joint body Jm is connected to the channel frame portion. It is also possible to press contact with the inner bottom surface of the vertical wall Cv of C. In this case, the width of the free end portion Sa of the elastic member S is set to the interval between the upper and lower locking claws Cuf and Clf (that is, the locking groove). It is necessary to set it sufficiently wider than the width of the open surface of Cg.
更にジョイント本体Jmの上側面には、ジョイント部材Jの、一方のピット枠Fの係止溝Cgへの適正差込位置を表示する目印mが付設されており、この目印mを該一方のピット枠Fの端面に合せることで、ジョイント部材Jの係止溝Cgへの差込量を容易に適正化することができる。 Further, a mark m indicating an appropriate insertion position of the joint member J into the locking groove Cg of one pit frame F is attached to the upper side surface of the joint body Jm. The mark m is attached to the one pit. By matching with the end face of the frame F, the amount of insertion of the joint member J into the locking groove Cg can be easily optimized.
また、ピットPのコーナ部分において相隣なるピット枠Fの隣接端部間を結合するための前記ジョイント部材J′は、係止溝Cgに遊隙を存して嵌合可能な帯板状の金属製ジョイント本体JmがピットPのコーナ部分に対応してL字状に屈曲形成される点を除いて、直線用ジョイント部材Jと基本構造が同一である。従って、このジョイント部材J′については、その構成要素に直線用ジョイント部材Jの対応する構成要素の参照符号を付すに留め、具体的な構造説明は省略する。また、ピットPのコーナ部分において相隣なるピット枠Fの隣接端面は、ピットPのコーナ形状に対応すべくピット枠Fの長手方向に対し斜め45度に切断加工される。 Further, the joint member J ′ for connecting adjacent ends of adjacent pit frames F in the corner portion of the pit P has a strip-like shape that can be fitted with a clearance in the locking groove Cg. The basic structure is the same as that of the straight joint member J except that the metal joint body Jm is bent in an L shape corresponding to the corner portion of the pit P. Therefore, regarding this joint member J ′, only the reference numerals of the corresponding components of the straight joint member J are attached to the components, and a specific structural description is omitted. In addition, adjacent end faces of adjacent pit frames F in the corner portion of the pit P are cut at an angle of 45 degrees with respect to the longitudinal direction of the pit frame F so as to correspond to the corner shape of the pit P.
次に本実施形態の作用を説明する。 Next, the operation of this embodiment will be described.
ピットPの構築に当たっては、ピットPの完成形態に合せて複数条のピット枠Fを互いに結合してピット枠組立体を予め組立てる。この場合、ピットPの直線部分においては、縦列するピット枠Fの相互間が直線部分用のジョイント部材Jを介して結合され、またピットPのコーナ部分においては、直交するピット枠Fの相互間がコーナ用のジョイント部材J′を介して結合される。 In constructing the pits P, a plurality of pit frames F are connected to each other in accordance with the completed form of the pits P, and a pit frame assembly is assembled in advance. In this case, in the straight part of the pit P, the pit frames F arranged in a row are connected to each other via the joint member J for the straight part, and in the corner part of the pit P, the pit frames F are orthogonal to each other. Are coupled via a corner joint member J '.
次いで、上記のようにして組立てられたピット枠組立体を、図示しない治具を用いて基礎Bから所望のレベルに位置決め保持し、次いで、そのレベル調整と位置決めがなされたピット枠組立体を、図示しないアンカ部材及び支柱を介して基礎B上に固定する。しかる後に、コンクリートの打設、固化により、ピットP付きの歩行面fを成形し、その成形と共にピット枠FがピットPの開口縁部に一体に沿設されるようにする。 Next, the pit frame assembly assembled as described above is positioned and held at a desired level from the base B using a jig (not shown), and then the pit frame assembly whose level is adjusted and positioned is not shown. It fixes on the foundation B via an anchor member and a support | pillar. After that, the walking surface f with the pit P is formed by placing and solidifying the concrete, and the pit frame F is installed along the opening edge of the pit P together with the forming.
ところで前述のようなピット枠F間の結合作業に際しては、ジョイント部材J,J′は、これに基部Sbを固定した一対の板ばねよりなる弾性部材Sの自由端部Saを両ピット枠Fの係止溝Cgの内面(図示例では溝底面、即ち前記鉛直壁Cvの内面)に各々係合させて弾性部材Sを弾性変形させながら、ジョイント本体Jmを、相隣なるピット枠Fの隣接端部間に跨がるよう係止溝Cgに単にスライドさせて差し込むだけでよい。この差込みの際に、弾性部材Sから弾発力を受けるジョイント本体Jmは、係止溝Cgの内面(図示例では係止溝Cgの開放端縁即ち係止爪部Cuf,Clfの内面)を圧接状態でスライドする。 By the way, in the joining operation between the pit frames F as described above, the joint members J and J ′ are connected to the free end portions Sa of the elastic members S made of a pair of leaf springs to which the base portion Sb is fixed. While the elastic member S is elastically deformed by engaging with the inner surface of the locking groove Cg (in the illustrated example, the groove bottom surface, that is, the inner surface of the vertical wall Cv), the joint body Jm is connected to the adjacent end of the adjacent pit frame F. All that is required is to simply slide it into the locking groove Cg so as to straddle between the parts. The joint body Jm that receives the elastic force from the elastic member S during the insertion inserts the inner surface of the locking groove Cg (in the illustrated example, the open end edge of the locking groove Cg, that is, the inner surfaces of the locking claws Cuf and Clf). Slide in pressure contact.
かくして、弾性部材Sの弾発力により、ジョイント本体Jmを係止溝Cgの内面に圧接させることができるから、ジョイント本体Jmを相隣なる両ピット枠Fの係止溝Cgの内面に各々摩擦連結可能となって、両ピット枠F間がジョイント部材J,J′を介して結合可能となる。従って、ジョイント部材J,J′は、従来のジョイント部材と比べて、その構造が簡素化されてコスト節減が図られ、その上、係止溝Cgに裏板をセットする作業も不要となって取扱いが頗る簡便となり、ジョイント部材J,J′によるピット枠F間の結合作業の能率向上が図られる。 Thus, the elastic force of the elastic member S allows the joint body Jm to be pressed against the inner surface of the locking groove Cg, so that the joint body Jm is frictioned against the inner surfaces of the locking grooves Cg of the adjacent pit frames F. The two pit frames F can be connected via the joint members J and J ′. Therefore, the joint members J and J ′ are simplified in structure and cost-saving as compared with the conventional joint member, and the work of setting the back plate in the locking groove Cg is also unnecessary. The handling becomes simple and the efficiency of the joining work between the pit frames F by the joint members J and J ′ can be improved.
また特に弾性部材Sは、これを図示例のように板ばねより構成したことで、製造容易となりコスト節減が達成される。しかもこの弾性部材Sは、それの基部Sbが自由端部Saよりもジョイント本体Jmの端部寄りに位置すると共に、その基部Sbと自由端部Saとの間が、基部Sbから自由端部Saに向かって斜めに傾斜するよう立ち上がる***部Smを介して接続されるので、ジョイント本体Jmを係止溝Cgに差し込む際に、板ばねよりなる弾性部材Sの自由端部Sa及び***部Smが係止溝Cgの軸方向開口端に引っ掛かりにくくなり、作業性が更に良好となる。 In particular, the elastic member S is made of a leaf spring as shown in the example of the drawing, so that it becomes easy to manufacture and cost saving is achieved. Moreover, the elastic member S has a base Sb positioned closer to the end of the joint body Jm than the free end Sa, and the space between the base Sb and the free end Sa extends from the base Sb to the free end Sa. Are connected via a raised portion Sm that rises obliquely toward the upper surface, and therefore when the joint body Jm is inserted into the locking groove Cg, the free end portion Sa and the raised portion Sm of the elastic member S made of a leaf spring are formed. It becomes difficult to get caught in the axial opening end of the locking groove Cg, and the workability is further improved.
以上、本発明の実施の形態について説明したが、本発明はその実施形態に限定されることなく、本発明の範囲内で種々の実施の形態が可能である。 The embodiment of the present invention has been described above, but the present invention is not limited to the embodiment, and various embodiments are possible within the scope of the present invention.
たとえば、ピット枠Fは、その断面形状が実施形態のものに限定されず、少なくともピット開口と反対側の側面に、ジョイント部材J,J′を装着可能な係止溝Cgを有した種々の断面形状の型枠を使用可能である。 For example, the cross-sectional shape of the pit frame F is not limited to that of the embodiment, and various cross sections having a locking groove Cg in which the joint members J and J ′ can be mounted at least on the side surface opposite to the pit opening. Shaped formwork can be used.
また前記実施形態では、ピットPをコンクリートの打設により成形するものを示したが、本発明では、溝状凹部を有するダクト(ピット形成部材)を基礎上に設置することでピットを構築するものにも実施可能である。 In the above embodiment, the pit P is formed by casting concrete. However, in the present invention, the pit is constructed by installing a duct (pit forming member) having a groove-like recess on the foundation. Can also be implemented.
また前記実施形態では、ピット枠Fの係止溝Cg付きチャンネル枠部Cの所定部位に蓋載せ段部Dを一体に連設したものを示したが、本発明では、蓋載せ段部を省略してもよく或いは蓋載せ段部の位置を適宜変更してもよい。 Moreover, in the said embodiment, what showed the lid mounting step part D integrally provided in the predetermined part of the channel frame part C with the locking groove Cg of the pit frame F was shown, However, In this invention, a lid mounting step part was abbreviate | omitted. Alternatively, the position of the lid mounting step may be changed as appropriate.
C・・・・・チャンネル枠部
Cg・・・・係止溝
Cl・・・・下壁部
Cu・・・・上壁部
Cuf,Clf・・一対の係止爪部
Cv・・・・鉛直壁
F・・・・・ピット枠
J・・・・・ピット枠直線部分に対応したジョイント部材
J′・・・・ピット枠コーナ部分に対応したジョイント部材
Jm・・・・ジョイント本体
O・・・・・ピット開口
P・・・・・ピット
S・・・・・弾性部材としての板ばね
Sa・・・・自由端部としての先部
Sb・・・・基部
Sm・・・・***部
3・・・・・凹溝
4・・・・・凸条部
C: Channel frame portion Cg ... Lock groove Cl ... Lower wall portion Cu ... Upper wall portion Cuf, Clf ... Pair of lock claws Cv ... Vertical Wall F ... Pit frame J ... Joint member J 'corresponding to the straight part of the pit frame ... Joint member Jm corresponding to the pit frame corner part ... Joint body O ... ··· Pit opening P ··· Pit S ··· Plate spring Sa as an elastic member ··· Tip portion Sb as a free end ··· Base Sm ··· Raised
Claims (3)
前記ジョイント部材(J,J′)は、前記係止溝(Cg)に遊隙を存して嵌合可能なジョイント本体(Jm)と、そのジョイント本体(Jm)に基部(Sb)が連結される弾性部材(S)とを備えており、
前記弾性部材(S)は、これの自由端部(Sa)を前記係止溝(Cg)に摺動可能に係合させ且つ該弾性部材(S)を弾性変形させることで生じる弾発力により、その係止溝(Cg)の内面に前記ジョイント本体(Jm)を圧接させるものであり、
前記ジョイント本体(Jm)は、帯状の板材より構成されていて、そのジョイント本体(Jm)を縦通する浅い凹溝(3)を一側面に有すると共に、その他側面には前記凹溝(3)に対応した凸条部(4)を有しており、前記凹溝(3)に前記弾性部材(S)の前記基部(Sb)が相対回動不能に嵌合した状態で該基部(Sb)と前記ジョイント本体(Jm)間が結合されることを特徴とする、ピット枠間のジョイント構造。 A plurality of pit frames (F) arranged in a row along the opening edge are arranged at the opening edge of the pit (P), and each pit frame (F) is opposite to the pit opening (O). A locking groove (Cg) extending in the longitudinal direction of the pit frame (F) is formed on the side surface, and the locking groove (Cg) extends between adjacent pit frames (F). In the joint structure between the pit frames, which are connected through the joint members (J, J ′) that can be mounted,
The joint member (J, J ′) has a joint body (Jm) that can be fitted with a clearance in the locking groove (Cg), and a base (Sb) connected to the joint body (Jm). An elastic member (S),
The elastic member (S) has a free end (Sa) slidably engaged with the locking groove (Cg) and elastic force generated by elastically deforming the elastic member (S). The joint body (Jm) is pressed against the inner surface of the locking groove (Cg) ,
The joint body (Jm) is formed of a strip-shaped plate material, and has a shallow groove (3) vertically passing through the joint body (Jm) on one side and the groove (3) on the other side. And the base portion (Sb) in a state in which the base portion (Sb) of the elastic member (S) is fitted in the concave groove (3) so as not to be relatively rotatable. And a joint structure between pit frames, wherein the joint body (Jm) is coupled .
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