JP3306003B2 - PVC small caliber muffler with drop-in bart and its use - Google Patents
PVC small caliber muffler with drop-in bart and its useInfo
- Publication number
- JP3306003B2 JP3306003B2 JP15220698A JP15220698A JP3306003B2 JP 3306003 B2 JP3306003 B2 JP 3306003B2 JP 15220698 A JP15220698 A JP 15220698A JP 15220698 A JP15220698 A JP 15220698A JP 3306003 B2 JP3306003 B2 JP 3306003B2
- Authority
- JP
- Japan
- Prior art keywords
- drop
- small
- pedestal
- inspection
- pvc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ドロップインバ−
ト部をもつ塩ビ製小口径ます、殊に公共用塩ビ製小口径
ます、及びその使用法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a small-sized caliber made of polyvinyl chloride having a butt portion, particularly a small-sized caliber made of polyvinyl chloride for public use, and its use.
【０００２】[0002]
【従来の技術】従来、この種の公共用塩ビ製小口径ます
を付設した一般的な排水設備は、図５に示すようになっ
ている。2. Description of the Related Art Conventionally, a general drainage system provided with a small-diameter sash made of such a public PVC is shown in FIG.
【０００３】すなわち、図中Ａの部分が民地、Ｂの部分
が歩道、Ｃの部分が車道となっていて、民地Ａの端と道
路際との境界近傍に、水路５１を下越して公共用塩ビ製
小口径ます５０が設置される。That is, in the figure, a portion A is a private area, a portion B is a sidewalk, and a portion C is a roadway. A small caliber 50 made of PVC for public use is installed.
【０００４】かかる公共用塩ビ製小口径ます５０につい
て、特に、ドロップインバ−ト部５２をもつ公共ますに
ついて、本出願人は既に提案し（特願平６−２３７２４
号）、特許権を得ている。The applicant of the present invention has already proposed such a small-sized caliber 50 made of polyvinyl chloride for public use, and in particular, with respect to a public masonry having a drop-in invert portion 52 (Japanese Patent Application No. Hei 6-23724).
No.), has obtained a patent right.
【０００５】これについて説明する。同図において、こ
のドロップインバ−ト部５２をもつ公共用塩ビ製小口径
ます５０の点検筒（立上り部ともいう）５３は、口径３
００〜６００ｍｍφの１本の既製の塩ビ管（継目なし
管）で構成され、その下端はスカ−ト状に若干拡径され
ている。また、その上端には塩ビ製受枠付円筒５４が内
嵌され、これに塩ビ製蓋５５が設けられている。なお、
この蓋５５の外周には地表ＧＬと面一のコンクリ−ト製
防護リング体５６で固められている。[0005] This will be described. In the figure, a small-diameter 50-inch inspection tube (also referred to as a rising portion) 53 made of public PVC having the drop-in invert portion 52 has a diameter of 3
It is composed of one ready-made PVC pipe (seamless pipe) with a diameter of 00 to 600 mmφ, and its lower end is slightly enlarged in a skirt shape. Further, a PVC-made cylinder 54 with a receiving frame is fitted at the upper end thereof, and a PVC-made lid 55 is provided thereon. In addition,
An outer periphery of the lid 55 is fixed with a protective ring body 56 made of concrete flush with the ground surface GL.
【０００６】この点検筒５３には宅内排水管５７が接続
されるが、この宅内排水管５７は、施工現場によって埋
設深さや流入方向や口径等が異なるので、いずれの宅内
排水管５７でも接続できるように現場施工とし、そのた
め、９０°支管５８を介して接続するようにしている。A home drain pipe 57 is connected to the inspection tube 53. The home drain pipe 57 can be connected to any of the home drain pipes 57 because the burial depth, the inflow direction, the diameter, and the like vary depending on the construction site. As described above, the connection is made via a 90 ° branch pipe 58.
【０００７】また、この点検筒５３には、次のようなド
ロップインバ−ト部５２が現場施工として取付けられ
る。[0007] A drop-invert portion 52 as described below is attached to the inspection cylinder 53 as a construction on site.
【０００８】すなわち、このドロップインバ−ト部５２
は、車道下に埋設される取付管５９と接続するため、自
在曲管（ＴＳ接合またはゴム輪接合用曲管または直管で
も可）６０を介して接続される。なお、この取付管５９
はゴム輪受口曲管６１および９０°支管６２を介して下
水本管６３に接続される。That is, the drop-invert portion 52
Is connected via a freely curved pipe (a TS pipe or a curved pipe for rubber ring connection or a straight pipe) 60 for connection with a mounting pipe 59 buried under the roadway. The mounting pipe 59
Is connected to a sewage main pipe 63 via a rubber ring receiving bent pipe 61 and a 90 ° branch pipe 62.
【０００９】特に、前記ドロップインバ−ト部５２は、
中央部にアンダ−フロ−部（流出口）を形成した漏斗体
６４と、この漏斗体６４の中央部より下方に延設した差
口部６５と、前記漏斗体６４の上端を下方に曲折して吊
下した円筒体６６と、この円筒体６６の下端を外向きに
折曲し、前記漏斗体６４および点検筒５３の下端を支持
するフランジ部６７と、から構成し、これらは射出成形
により一体成形される。In particular, the drop-invert part 52 is
A funnel 64 having an underflow portion (outlet) formed in the center, a spout 65 extending below the center of the funnel 64, and an upper end of the funnel 64 bent downward. And a flange 67 supporting the lower end of the funnel body 64 and the inspection tube 53 by bending the lower end of the cylindrical body 66 outward, and these are formed by injection molding. It is integrally molded.
【００１０】そして、前記漏斗体６４の上端と点検筒５
３の内面との間にパッキン（不図示）を介在してシ−ル
している。そして、このパッキンは予めドロップインバ
−ト部２に装着されて施工現場に持込まれる。The upper end of the funnel 64 and the inspection cylinder 5
A seal (not shown) is interposed between the inner surface of No. 3 and the inner surface. The packing is mounted on the drop-invert part 2 in advance and brought to the construction site.
【００１１】以上のような点検筒５３、宅内排水管５７
およびドロップインバ−ト部５２の施工現場における標
準的な取扱いを述べる。The inspection cylinder 53 and the house drain pipe 57 as described above.
The standard handling of the drop invert part 52 at the construction site will be described.
【００１２】先ず、塩ビ製直管（塩ビ管）を切管して、
埋設深さに応じた点検筒５３を作り、この点検筒５３の
下端を若干拡径する。次に、既に埋設されて締め固め状
態の埋戻し層６９上で突出した自在曲管６０に、孔あき
またはド−ナツ状台座（コンクリ−ト製または複合樹脂
製）７０を外嵌し、その上に、パッキンを装着したドロ
ップインバ−ト部５２を載置し、その差口部６５を自在
曲管６０に接着接合する（勿論、接着接合は後で行
う）。次いで、このドロップインバ−ト部５２に点検筒
５３をその下端側から挿入する。First, a straight pipe made of PVC (PVC pipe) is cut off,
An inspection cylinder 53 corresponding to the burial depth is made, and the lower end of the inspection cylinder 53 is slightly enlarged. Next, a perforated or donut-shaped pedestal (made of concrete or composite resin) 70 is externally fitted to the free-bendable tube 60 which is already buried and protrudes on the backfill layer 69 in the compacted state. The drop-inverting part 52 with the packing is placed thereon, and the spigot 65 is bonded to the freely bendable tube 60 (of course, the bonding will be performed later). Next, an inspection tube 53 is inserted into the drop-invert portion 52 from the lower end side.
【００１３】その結果、点検筒５３の下端はフランジ部
６７に当接する。次いで、点検筒５３に流入口を宅内排
水管５７の位置に合せて、ホ−ルソ−により穿孔する。
この穿孔された流入口に９０°支管５８を接着接合す
る。As a result, the lower end of the inspection tube 53 comes into contact with the flange 67. Next, the inlet of the inspection tube 53 is aligned with the position of the drainage pipe 57 in the house, and the hole is pierced with a hole saw.
A 90 ° branch pipe 58 is bonded to the perforated inlet.
【００１４】したがって、点検筒５３の蓋５５に路面荷
重が作用すると、その路面荷重は点検筒５３からドロッ
プインバ−ト部５２のフランジ部６７に作用し、次い
で、締め固められた埋戻し層６９上で水平状に載置され
た台座７０によって支持される。Therefore, when a road surface load acts on the lid 55 of the inspection tube 53, the road surface load acts on the flange portion 67 of the drop-invert portion 52 from the inspection tube 53, and then the backfill layer 69 which has been compacted. It is supported by a pedestal 70 placed horizontally above.
【００１５】ところで、一般に、埋設された下水本管の
ひび割れ対策の一つとして、次のことがいわれている。By the way, in general, as one of measures against cracking of a buried sewage main pipe, the following is said.
【００１６】すなわち、布設施工に際し、下水本管の耐
路面荷重（耐荷力）を増大して下水本管のひび割れ、損
傷を防止するためには、下水本管底部の支持面を拡大
し、管と砂基礎等の土砂との接触面積を大きくして、路
面荷重に対する反力作用面積の拡大を図ることにより、
管体に生じる集中応力を軽減し、耐荷力を増大させる、
といわれているが、かかる下水本管のひび割れ対策の思
想を、前記ドロップインバ−ト部５２をもつ塩ビ製小口
径ます５０に照合してみると、次のような問題のあるこ
とが新たに判明した。That is, at the time of laying construction, in order to increase the road load resistance (load bearing capacity) of the sewer main pipe and to prevent cracking and damage of the sewer main pipe, the support surface at the bottom of the sewer main pipe is enlarged. By increasing the contact area between the soil and the sand foundation, etc., and expanding the reaction force action area against road surface load,
Reduce the concentrated stress generated in the tube, increase the load carrying capacity,
It is said that, when comparing the idea of measures for cracking the sewage main pipe with the small-diameter PVC 50 having the drop-invert portion 52, the following problems are newly found. found.
【００１７】[0017]
【発明が解決しようとする課題】一般に、公共用塩ビ製
小口径ますは、前記のように民地の端と道路際との境界
近傍に埋設されるものであるから、車両による路面荷重
はないとはいえ、不意に車両等の重路面荷重がかかり、
これが前記点検筒５３に作用することも往々にしてみら
れる。In general, a small-caliber truss made of PVC for public use is buried in the vicinity of the boundary between the end of the private land and the side of the road, as described above, so that there is no road load due to the vehicle. However, suddenly heavy road loads such as vehicles are applied,
It is often seen that this acts on the inspection cylinder 53.
【００１８】その結果、この重路面荷重は点検筒５３の
下端拡径部から、ドロップインバ−ト部５２のフランジ
部６７に作用して台座７０によって支持されるのであ
る。As a result, the heavy road surface load acts on the flange portion 67 of the drop-invert portion 52 from the enlarged diameter portion at the lower end of the inspection tube 53 and is supported by the pedestal 70.
【００１９】ところが、点検筒５３の下端拡径部は現場
における拡径作業であるため、または、生産工場におけ
る拡径作業でも、その下端拡径部の当接面積（反力作用
面積）はそれ程大きくできないことから、集中応力の発
生は避けられない。However, because the enlarged diameter at the lower end of the inspection tube 53 is an on-site diameter enlargement operation, or even when the diameter is enlarged at a production factory, the contact area (reaction force acting area) of the enlarged diameter at the lower end is not so large. Since it cannot be increased, generation of concentrated stress is inevitable.
【００２０】しかも、点検筒５３が既製の塩ビ管である
だけに、その下端拡径部と、ドロップインバ−ト部５２
のフランジ部６７の当接は、必ずしも十分に密着でき
ず、ひいては、台座７０で垂直方向の分布荷重を均等に
受けることができない。In addition, since the inspection cylinder 53 is an already-made PVC pipe, the lower end enlarged diameter portion and the drop-invert portion 52 are provided.
Abutting of the flange portion 67 cannot always be sufficiently adhered, and the pedestal 70 cannot evenly receive the distributed load in the vertical direction.
【００２１】その結果、台座７０が偏り沈下し、取付管
５９へ路面荷重が作用する、という由々しき事態になり
かねない、という問題があった。As a result, there has been a problem that the pedestal 70 may be deviated and settled down, and a road surface load may be applied to the mounting pipe 59.
【００２２】一方、公共ますは、上面を水平にしたと
き、流入側、流出側が規定の勾配になるよう設計されて
いるので、必ず公共ますの上面を水準器等で水平になっ
ているか否かを確認する。これが水平になっていれば、
所定の勾配が得られるばかりでなく、当然、点検筒は垂
直（鉛直）になる。On the other hand, when the upper part of the public cauldron is leveled, the inflow side and the outflow side are designed so as to have a specified gradient. Check. If this is horizontal,
Not only is a predetermined gradient obtained, but, of course, the inspection cylinder will be vertical (vertical).
【００２３】ところが、前記公共用塩ビ製小口径ます５
０のドロップインバ−ト部５２は、自在曲管６０等に接
続するため、水準器を用いて点検筒５３の垂直性を確認
しても、自在継手（またはゴム輪継手も含まれる）であ
るだけに、点検筒５３の垂直性が安定しにくい、という
問題が新たに判明した。However, the above-mentioned public PVC small-diameter square 5
The 0 drop-invert portion 52 is a universal joint (or a rubber ring joint is included) even if the verticality of the inspection cylinder 53 is checked using a level to connect to the universally bent tube 60 or the like. However, the problem that the verticality of the inspection tube 53 is hard to be stabilized has been newly found.
【００２４】そこで本発明は、ドロップインバ−ト部５
２をもつ公共用塩ビ製小口径ます５０および台座７０と
の間における反力作用面積の拡大を図ることを主たる目
的とし、現場施工をより簡単化することを副たる目的と
するものである。Accordingly, the present invention provides a drop-in
The main object of the present invention is to increase the reaction force acting area between the small-diameter masque 50 and the pedestal 70 made of PVC for public use, and to further simplify the on-site construction.
【００２５】[0025]
【課題を解決するための手段】かかる目的を達成するた
め、本発明は、１）施工現場に合せて排水管用流入口を
開口する長尺の継目なし点検筒と、ドロップインバ−ト
部とをもつ塩ビ製小口径ますにおいて、前記点検筒とド
ロップインバ−ト部とを射出成形により一体成形すると
共に、該点検筒の下方に、台座当接部を射出成形により
一体成形して設けることにより、反力作用面積を拡大す
ると共に、点検筒の垂直性を確保したことを特徴とする
ドロップインバ−ト部をもつ塩ビ製小口径ますにあり、
また、２）請求項１の台座当接部を外方に延出したフラ
ンジ部で形成して台座上に密着載置したドロップインバ
−ト部をもつ塩ビ製小口径ますにあり、また、３）請求
項１または２の点検筒の下端に、内方下向きで、かつ、
その中央下方に差口部を設けた漏斗部を射出成形により
一体成形し、該漏斗部の外面を、孔あき台座の内径側に
設けた内向き傾斜面トリに密着載置したドロップインバ
−ト部をもつ塩ビ製小口径ますにあり、また、４）施工
現場に合せて排水管用流入口を開口する長尺の継目なし
点検筒と、ドロップインバ−ト部とをもつ塩ビ製小口径
ますで、前記点検筒とドロップインバ−ト部とを射出成
形により一体形成すると共に、点検筒の下方に、台座当
接部を射出成形により一体形成した塩ビ製小口径ますの
使用法にあって、台座当接部を、水平状にした台座に載
置することにより、点検筒の垂直性を出すことを特徴と
するドロップインバ−ト部をもつ塩ビ製小口径ますの使
用法を要旨とするものである。In order to achieve the above object, the present invention provides: 1) a long seamless check tube opening a drain pipe inlet in accordance with a construction site; and a drop-invert portion. In a small-diameter PVC made of PVC, the inspection cylinder and the drop-in-in part are integrally formed by injection molding, and a pedestal abutment part is integrally formed by injection molding below the inspection cylinder to provide: The small-diameter PVC made with a drop-in-inverted valve, which has a large reaction force area and secures the verticality of the inspection tube,
Also, 2) a small-diameter vinyl chloride trough having a pedestal abutting portion defined by an outwardly extending flange portion and having a drop-in-in bar portion closely mounted on the pedestal; ) At the lower end of the inspection cylinder according to claim 1 or 2,
A funnel with a spigot below the center is integrally formed by injection molding, and the outer surface of the funnel is placed in close contact with an inwardly inclined surface bird provided on the inner diameter side of the perforated pedestal. 4) A small-sized PVC pipe with a long seamless check tube that opens an inlet for a drain pipe according to the construction site and a drop-in-bar According to the usage of a small-diameter PVC muzzle in which the inspection cylinder and the drop-in-in part are integrally formed by injection molding, and a base contact portion is integrally formed by injection molding below the inspection cylinder. The outline of the method is to use a small-diameter PVC caliber with a drop-in inverting part, characterized in that the contact part is placed on a horizontal pedestal to make the inspection tube vertical. is there.
【００２６】したがって本発明には、次の実施態様が含
まれる。Therefore, the present invention includes the following embodiments.
【００２７】この塩ビ製小口径ますを公共ますにし、
下水本管と公共ますとの水平距離が短い狭小道路や、段
差のある場所に好都合に使用する。[0027] This small-sized PVC-made masu is made public,
It is conveniently used on narrow roads where the horizontal distance between the sewer main and the public mascot is short or where there are steps.
【００２８】この塩ビ製小口径ますを、宅内ますの落
差調整用に好都合に使用する。This small caliber made of PVC is conveniently used for adjusting the head in a house.
【００２９】ドロップインバ−ト部の差口部を、取付
管側のゴム輪受口付直管に挿入するようにして接着接合
作業を省き、更に、作業性を向上させる。The spigot of the drop-in invert is inserted into the straight pipe with the rubber ring socket on the mounting pipe side, so that the bonding operation is omitted and the workability is further improved.
【００３０】[0030]
【発明の実施の形態】本発明を、添付図面に示す実施の
形態例により詳細に述べる。図１は本発明の実施の形態
例の要部側面図、図２は図１の平面図、図３は図１の実
施の形態例の全体縦断面図、図４は図１の実施例の要部
図であり、図５で示す従来のドロップインバ−ト部５２
をもつ公共用塩ビ製小口径ます５０と同一または均等で
共通する部分は、そのまま具備し、これを省略して図示
しないが、用語および図面符号はそのまま用いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to embodiments shown in the accompanying drawings. 1 is a side view of a main part of an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is an overall vertical sectional view of the embodiment of FIG. 1, and FIG. FIG. 6 is a main part diagram showing a conventional drop-inverting section 52 shown in FIG.
The same or equivalent and common parts as the small-sized caliber 50 made of PVC for public use are provided as they are, not shown here, and the terms and drawing symbols are used as they are.
【００３１】本発明の実施の形態例のドロップインバ−
ト部（取付管５９への流出口が下方に向き開口し、排水
がドロップ状に流下するインバ−ト部をいう）２をもつ
公共用塩ビ製小口径ます１は、宅内排管５７の径が１０
０ｍｍφ、１２５ｍｍφ、１５０ｍｍφ等に適用できる
もので、勿論、その適用時における差口部８の径は、そ
れぞれ約１１０ｍｍφ、約１４０ｍｍφ、約１５０ｍｍ
φに変更して使用する。The drop-in bar according to the embodiment of the present invention
The public-use PVC small-diameter main unit 2 has a port (the outlet to which the outlet to the mounting pipe 59 faces downward and the drainage flows down in a drop shape). Is 10
It can be applied to 0 mmφ, 125 mmφ, 150 mmφ, etc. Of course, the diameter of the spout 8 at the time of its application is about 110 mmφ, about 140 mmφ, about 150 mm, respectively.
Change to φ and use.
【００３２】特に、このドロップインバ−ト部２は、点
検筒４と塩ビ射出成形（同一金型で同時に成形）されて
一体となっており、量産性や施工現場での取扱性の向上
は勿論、水平状（直交状）のフランジ部５をも一体射出
成形して、このフランジ部５により、反力作用面積を拡
大したり、孔あき台座６との密着性を良好にしたりし
て、ひび割れ等の損傷を防ぎながら、不意の重路面荷重
に耐えられるものとすると共に、点検筒４の安定した垂
直性（鉛直性ともいうが、これは傾斜地等の設置場所や
締め固められた埋戻し層６９の施工現場によって、若干
のゆとりをもつ）を得られるものである。In particular, the drop-invert portion 2 is integrally formed with the inspection tube 4 by injection molding of PVC (simultaneously molding with the same mold), so that it is possible to improve mass productivity and handleability at the construction site. The horizontal (orthogonal) flange portion 5 is also integrally injection-molded, and the flange portion 5 is used to increase the reaction force acting area or to improve the adhesion to the perforated pedestal 6, thereby cracking. In addition to being able to withstand unexpected heavy road surface loads while preventing damage such as damage to the road, stable verticality of the inspection cylinder 4 (also referred to as verticality, which means that the inspection cylinder 4 is installed on slopes or the like, With 69 construction sites, it is possible to obtain some space).
【００３３】このドロップインバ−ト部２および点検筒
４について詳述する。図１、２および３において、点検
筒４は前記のように射出成形品であるが、その寸法は、
口径約２００ｍｍφ、高さ約８００ｍｍであって、その
肉厚は、通常の押出し成形による塩ビ製直管と同寸法に
なっている。The drop-in inverter 2 and the inspection cylinder 4 will be described in detail. In FIGS. 1, 2 and 3, the inspection cylinder 4 is an injection-molded product as described above.
It has a diameter of about 200 mmφ and a height of about 800 mm, and has the same thickness as that of a straight PVC pipe formed by ordinary extrusion molding.
【００３４】この点検筒４の下端にはドロップインバ−
ト部２が、前記のように一体射出成形されているが、こ
のドロップインバ−ト部２は、点検筒４の下端（若干上
方でも可）から外方に延設したフランジ５と、点検筒４
の下端から内方に延設し、かつ、下向きに傾斜した漏斗
部７と、この漏斗部７の中央で下向きに延設した、アン
ダ−フロ−部（下方流出口）および接着接合部としての
差口部８と、から構成している。A drop-in bar is provided at the lower end of the inspection cylinder 4.
The drop part 2 is integrally formed by injection molding as described above. The drop-invert part 2 includes a flange 5 extending outward from the lower end of the inspection cylinder 4 (may be slightly upward), and an inspection cylinder. 4
A funnel portion 7 extending inwardly from the lower end and inclined downwardly, and an underflow portion (downward outlet) and an adhesive bonding portion extending downward at the center of the funnel portion 7. And a spigot 8.
【００３５】このフランジ部（台座当接部ともいい、台
座６上へ路面荷重を伝える部位をいう）５は、射出成形
されて構成するので、任意の延出寸法にも形成できる
が、図示のものでは外径約３００ｍｍφ、肉厚約７ｍｍ
になっている。The flange portion (also referred to as a pedestal abutment portion, which is a portion for transmitting a road surface load onto the pedestal 6) 5 is formed by injection molding, so that it can be formed to have any extension dimension. The outer diameter is about 300mmφ and the wall thickness is about 7mm
It has become.
【００３６】また、このフランジ部５には、その上面に
６つの、厚さ６ｍｍの三角状リブ９，９…を立設し、こ
れらのリブ９を点検筒４の下方外面に一体化して連結し
ている。On the upper surface of the flange portion 5, six triangular ribs 9, 6... Having a thickness of 6 mm are erected, and these ribs 9 are integrally connected to the lower outer surface of the inspection tube 4. are doing.
【００３７】したがって、この剛性をもたせたフランジ
部５に、不意の水平方向の路面荷重の分力が作用しても
これが歪むことなく、ひいては、台座６の分布荷重を可
及的に均等化して、台座６の偏り沈下を防止し、取付管
５９への悪影響を防いでいる。Therefore, even if a sudden horizontal component of the road surface load acts on the rigidity of the flange portion 5, the component is not distorted, and the distributed load of the pedestal 6 is made as equal as possible. , The pedestal 6 is prevented from being deviated and settled, thereby preventing the mounting pipe 59 from being adversely affected.
【００３８】また、前記差口部８は通常の差口挿入長さ
より長寸に形成し、すなわち、口径約１１０ｍｍφの場
合、長さ約８７ｍｍ、約１４０ｍｍφの場合、長さ約９
７ｍｍ、約１５０ｍｍφの場合、長さ約１１０ｍｍに形
成し、挿入ストッパ−ないし差込み標線１０を設け、取
付管５９側の自在曲管（直管）６０やＴＳ接合曲管（直
管）やゴム輪接合曲管（直管）等への挿入長さを規制し
て、接合作業に信頼性を与えている。The spigot 8 is formed to be longer than a normal spigot insertion length. That is, when the diameter is about 110 mmφ, the length is about 87 mm, and when the diameter is about 140 mmφ, the length is about 9 mm.
In the case of 7 mm and about 150 mmφ, it is formed to a length of about 110 mm, provided with an insertion stopper or insertion mark line 10, a freely curved pipe (straight pipe) 60 on the mounting pipe 59 side, a TS-jointed curved pipe (straight pipe), and rubber. The length of insertion into a curved pipe (straight pipe) or the like is regulated to give reliability to the joining work.
【００３９】また、台座６は、従来のものは略同一形状
の厚肉・ド−ナツ状、少なくとも孔あきに構成している
が、特に、差口部８の挿入長さ規制もあって、その内径
を若干小径にすることができ、しかも、内径側上面に内
向き傾斜面トリ１１を形成して、この内向き傾斜面トリ
１１によって漏斗部７の外面を密着させ、重路面荷重を
支持する反力作用面積を拡大している。The pedestal 6 has a thick-walled, donut-like shape having a substantially identical shape, and is at least perforated, but in particular, there is also a restriction on the insertion length of the spigot portion 8. The inner diameter can be made a little smaller, and furthermore, an inwardly inclined surface tri 11 is formed on the upper surface on the inner side, and the outer surface of the funnel 7 is brought into close contact with the inwardly inclined surface tri 11 to support heavy road surface loads. The reaction force acting area is enlarged.
【００４０】この内向き傾斜面トリ１１と、台座６の上
面のフランジ部載置凹部１２とによって、ドロップイン
バ−ト部２は台座６に対し、埋戻し時等において、水平
方向にずれることがなく、荷重分布を可及的に均等化す
ることができる。Due to the inwardly inclined inclined surface bird 11 and the flange mounting recess 12 on the upper surface of the pedestal 6, the drop-invert portion 2 can be displaced in the horizontal direction with respect to the pedestal 6 at the time of backfilling or the like. In addition, the load distribution can be equalized as much as possible.
【００４１】そして、この台座６は図１の実施例の場
合、外径約３６０ｍｍφ、厚さ約５５ｍｍ、内径約１８
０ｍｍφ、内向き傾斜面トリ１１の傾斜角約６５°、フ
ランジ部載置凹部１２の深さ約１０ｍｍになっていて、
特に、この台座６の内径下面側に肉ヌスミ１３を設け
て、取付管５９側の自在曲管６０等への接続の場合も、
支障のないようにしている。The pedestal 6 has an outer diameter of about 360 mmφ, a thickness of about 55 mm, and an inner diameter of about 18 in the case of the embodiment shown in FIG.
0 mmφ, the inclination angle of the inwardly inclined surface bird 11 is about 65 °, the depth of the flange portion mounting recess 12 is about 10 mm,
In particular, also in the case of providing a thickening 13 on the lower surface side of the inner diameter of the pedestal 6 and connecting to the freely bending tube 60 on the mounting tube 59 side,
We do not have any trouble.
【００４２】なお、本実施の形態例のフランジ５は、点
検筒４の下端で外方に延設して、最大反力作用面積を形
成しているが、本発明はこれに限らず、点検筒４の下端
より若干上方において延設してもよい。この場合には、
台座６の内向き傾斜面トリ１１の反力作用面積は縮小で
きる。The flange 5 of this embodiment extends outward at the lower end of the inspection tube 4 to form a maximum reaction force acting area. However, the present invention is not limited to this, and the inspection is not limited to this. It may be extended slightly above the lower end of the cylinder 4. In this case,
The reaction force acting area of the inwardly inclined surface bird 11 of the pedestal 6 can be reduced.
【００４３】[0043]
【発明の効果】本発明の請求項１及び４によれば、継目
なし点検筒とドロップインバ−ト部とを一体射出成形し
たので、生産性および取扱性は従来のものより特段に向
上するのは勿論、点検筒の下方に台座当接部を設けたの
で、取付管等へ路面荷重が伝わらず、取付管等を損傷し
ないばかりか、台座さえ水平度を確認すれば、点検筒の
垂直性が安定して得られる。According to the first and fourth aspects of the present invention, since the seamless inspection tube and the drop-in-invert portion are integrally formed by injection molding, the productivity and the handling efficiency are significantly improved as compared with the conventional one. Of course, the pedestal abutment is provided below the inspection tube, so that the road surface load is not transmitted to the mounting tube, etc., so that not only the mounting tube etc. is not damaged, but also the pedestal can be checked for verticality if the level is checked. Is obtained stably.
【００４４】殊に、取付管側に自在曲管（ゴム輪受口付
曲管）を設けている場合で、方向が定まらず不安定とな
っても、点検筒の垂直性は容易に安定させることができ
る。Particularly, in the case where a flexible tube (curved tube with a rubber ring socket) is provided on the mounting tube side, even if the direction is not determined and becomes unstable, the verticality of the inspection tube is easily stabilized. be able to.
【００４５】請求項２によれば、前記の外、フランジ部
であるため、台座との密着性が確保でき、間欠的に作用
する不意の重路面荷重によってもガタ付がない。According to the second aspect of the present invention, since the outer portion is the flange portion, adhesion to the pedestal can be ensured, and there is no backlash even by an unexpected heavy road surface load acting intermittently.
【００４６】請求項３によれば、前記の外、漏斗部と台
座の内向き傾斜面トリとにより、反力作用面積を拡大し
て、ますの沈下を更に防止すると共に、点検筒に水平方
向の荷重が作用しても、台座から外れることがない。According to the third aspect, the outside, the funnel portion and the inwardly inclined surface of the pedestal enlarge the reaction force acting area to further prevent the sinker from sinking, and furthermore, the horizontal direction of the inspection cylinder. Even if a load of 1 is applied, it does not come off the pedestal.
【図１】本発明の実施の形態例の要部側面図である。FIG. 1 is a side view of a main part of an embodiment of the present invention.
【図２】図１の平面図である。FIG. 2 is a plan view of FIG.
【図３】図１の実施の形態例の全体縦断面図である。FIG. 3 is an overall vertical sectional view of the embodiment of FIG. 1;
【図４】図１の実施例の要部図である。FIG. 4 is a main part view of the embodiment of FIG. 1;
【図５】従来例である。FIG. 5 is a conventional example.
１…公共用塩ビ製小口径ます、２…ドロップインバ−ト
部、４…点検筒、５…フランジ部、６…台座、７…漏斗
部、１１…内向き傾斜面トリ1 ... Small caliber made of PVC for public use 2 ... Drop-invert part 4 ... Inspection cylinder 5 ... Flange part 6 ... Pedestal 7 ... Funnel part 11 ...
Claims (4)
する長尺の継目なし点検筒と、ドロップインバ−ト部と
をもつ塩ビ製小口径ますにおいて、 前記点検筒とドロップインバ−ト部とを射出成形により
一体成形すると共に、該点検筒の下方に、台座当接部を
射出成形により一体成形して設けることにより、反力作
用面積を拡大すると共に、点検筒の垂直性を確保したこ
とを特徴とするドロップインバ−ト部をもつ塩ビ製小口
径ます。1. In a small-diameter PVC sash having a long seamless inspection cylinder opening a drain pipe inlet in accordance with a construction site and a drop-in bar, the inspection cylinder and the drop-in bar are provided. Are integrally formed by injection molding, and a pedestal abutment portion is integrally formed by injection molding below the inspection cylinder to provide a reaction force acting area and ensure the verticality of the inspection cylinder. It is characterized by a small caliber made of PVC with a drop-in invert part.
フランジ部で形成して台座上に密着載置したドロップイ
ンバ−ト部をもつ塩ビ製小口径ます。2. A small-diameter PVC seat having a pedestal abutment portion according to claim 1 formed by an outwardly extending flange portion and having a drop-invert portion closely mounted on the pedestal.
方下向きで、かつ、その中央下方に差口部を設けた漏斗
部を射出成形により一体成形し、該漏斗部の外面を、孔
あき台座の内径側に設けた内向き傾斜面トリに密着載置
したドロップインバ−ト部をもつ塩ビ製小口径ます。3. A funnel having an opening facing downward and inward at the lower end of the inspection tube according to claim 1 or 2 and integrally formed by injection molding, and an outer surface of the funnel is formed by injection molding. A small-diameter PVC made with a drop-in inverting part that is closely mounted on an inwardly inclined surface bird provided on the inner diameter side of a perforated pedestal.
する長尺の継目なし点検筒と、ドロップインバ−ト部と
をもつ塩ビ製小口径ますで、 前記点検筒とドロップインバ−ト部とを射出成形により
一体形成すると共に、点検筒の下方に、台座当接部を射
出成形により一体形成した塩ビ製小口径ますの使用法に
あって、 台座当接部を、水平状にした台座に載置することによ
り、点検筒の垂直性を出すことを特徴とするドロップイ
ンバ−ト部をもつ塩ビ製小口径ますの使用法。4. A small-diameter PVC pipe having a long seamless check tube opening a drain pipe inlet in accordance with the construction site and a drop-in bar, the check tube and the drop-in bar. The base is formed integrally by injection molding, and the base abutment part is integrally formed by injection molding below the inspection cylinder. The use of a small-diameter PVC muffler with a drop-in inverting part, which makes the inspection tube more vertical by mounting it on a small box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15220698A JP3306003B2 (en) | 1998-05-16 | 1998-05-16 | PVC small caliber muffler with drop-in bart and its use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15220698A JP3306003B2 (en) | 1998-05-16 | 1998-05-16 | PVC small caliber muffler with drop-in bart and its use |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11323980A JPH11323980A (en) | 1999-11-26 |
| JP3306003B2 true JP3306003B2 (en) | 2002-07-24 |
Family
ID=15535394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15220698A Expired - Lifetime JP3306003B2 (en) | 1998-05-16 | 1998-05-16 | PVC small caliber muffler with drop-in bart and its use |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3306003B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT500139B8 (en) * | 2004-02-20 | 2007-02-15 | Guggemos Horst | RING ELEMENT |
-
1998
- 1998-05-16 JP JP15220698A patent/JP3306003B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11323980A (en) | 1999-11-26 |
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