JPH0733536Y2 - Conduit terminal structure - Google Patents

Conduit terminal structure

Info

Publication number
JPH0733536Y2
JPH0733536Y2 JP1985005416U JP541685U JPH0733536Y2 JP H0733536 Y2 JPH0733536 Y2 JP H0733536Y2 JP 1985005416 U JP1985005416 U JP 1985005416U JP 541685 U JP541685 U JP 541685U JP H0733536 Y2 JPH0733536 Y2 JP H0733536Y2
Authority
JP
Japan
Prior art keywords
flame
conduit
sealing material
retardant foam
cable
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
Application number
JP1985005416U
Other languages
Japanese (ja)
Other versions
JPS61123616U (en
Inventor
城治 室田
利昭 山路
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
THE FURUKAW ELECTRIC CO., LTD.
Original Assignee
THE FURUKAW ELECTRIC CO., LTD.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by THE FURUKAW ELECTRIC CO., LTD. filed Critical THE FURUKAW ELECTRIC CO., LTD.
Priority to JP1985005416U priority Critical patent/JPH0733536Y2/en
Publication of JPS61123616U publication Critical patent/JPS61123616U/ja
Application granted granted Critical
Publication of JPH0733536Y2 publication Critical patent/JPH0733536Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Details Of Indoor Wiring (AREA)
  • Installation Of Indoor Wiring (AREA)

Description

【考案の詳細な説明】 〔産業上の利用分野〕 本考案は電線管の端末部構造の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an improvement in the terminal structure of a conduit.

〔従来の技術〕[Conventional technology]

従来、防火区画を電線管で貫通する場合の電線管端末部
構造は実公昭58−32430号公報にも開示されているが、
一般には第2図に示されるように壁又は床等の隔壁1に
貫通配置された電線管2の各端部でケーブル3に耐炎シ
ール材4を盛り付け、電線管2の端部と共に耐炎シール
材4を2つ割りの押え金具5で包囲締付けて構成されて
いた。
Conventionally, the conduit end structure in the case of penetrating a fireproof compartment with a conduit is also disclosed in Japanese Utility Model Publication No. 58-32430.
Generally, as shown in FIG. 2, a flame-resistant seal material 4 is put on the cable 3 at each end of the conduit tube 2 penetratingly arranged in the partition wall 1 such as a wall or a floor, and the flame-proof seal material together with the end portion of the conduit tube 2 is attached. 4 was surrounded and clamped by a holding metal fitting 5 divided into two.

〔考案が解決しようとする問題点〕[Problems to be solved by the invention]

前述のような従来の電線管端末部構造は、隔壁1からの
電線管2の突き出しを大幅に短縮しても2時間の防火性
能が保証できるという点で非常に優れたものであつた。
しかしながら、防火性には優れているが、原子力発電所
などのように耐火性だけではなく気密性をも要求される
場所での使用については不十分であつた。
The conventional conduit end structure as described above is extremely excellent in that the fireproof performance for 2 hours can be guaranteed even if the protrusion of the conduit 2 from the partition wall 1 is greatly shortened.
However, although it is excellent in fireproofness, it was insufficient for use in a place where not only fire resistance but also airtightness is required such as a nuclear power plant.

本考案の目的は前述した従来の電線管端末部構造の問題
点に着目し、耐火性のみならず気密性にも優れた電線管
の端末部構造を提供することにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide an end portion structure of a conduit tube which is excellent not only in fire resistance but also in airtightness, focusing on the problems of the above-described conventional conduit terminal structure.

〔問題点を解決するための手段〕 このような技術的課題を達成する手段として、本考案は
電線管端部側でケーブルに難燃性発泡シール材を設け、
これに接して盛り付けた耐炎シール材と共に押え金具で
その難燃性発泡シール材を圧縮状態にして締付けたもの
である。
[Means for Solving Problems] As a means for achieving such a technical problem, the present invention provides a flame-retardant foam sealing material on a cable at the end of a conduit tube,
The flame-retardant sealing material, which is placed in contact with this, is pressed together with the flame-retardant foam sealing material in a compressed state by a metal fitting.

〔作用〕[Action]

叙上の構成による本考案の電線管の端末部構造による
と、難燃性発泡シール材が押え金具により圧縮状態で締
付けられることと当該発泡シール材それ自体の性質(膨
張性)とによつてケーブルに対し常に応力を付与する状
態を維持し、難燃性発泡シール材によるケーブルへの緊
密な密着がなされる。
According to the end portion structure of the conduit of the present invention having the above-described configuration, the flame-retardant foam sealing material is tightened in a compressed state by the retainer and the property (expansion) of the foam sealing material itself. The stress is always applied to the cable, and the flame-retardant foam sealing material makes close contact with the cable.

〔実施例〕〔Example〕

以下、本考案の電線管の端末部構造を添付図面に示され
た実施例について更に詳細に説明する。
Hereinafter, the structure of the terminal portion of the conduit of the present invention will be described in more detail with reference to the embodiments shown in the accompanying drawings.

第1図には本考案の一実施例に係る電線管の端末部構造
が示され、第3図および第4図にはその形成過程が示さ
れている。
FIG. 1 shows a structure of a terminal portion of a conduit according to an embodiment of the present invention, and FIGS. 3 and 4 show a forming process thereof.

この実施例による電線管の端末部構造では、電線管2の
端部開口に適当なリング状アダプター6が取付けられ
る。このリング状アダプター6に接するようにケーブル
3には難燃性発泡シール材(例えばシリコンオームシー
ト)7が設けられる。この難燃性発泡シール材は帯状の
ものをケーブル3に巻き重ね、その際この帯状の難燃性
発泡シール材は後述する押え金具の内径よりも大きな外
径になるまで巻き付けられる(第4図)。その後、この
難燃性発泡シール材7に隣接してケーブル3に耐炎シー
ル材8、例えば古河電気工業(株)製、商品名ダンシー
ルPが盛り付けられる。
In the conduit end structure according to this embodiment, a suitable ring-shaped adapter 6 is attached to the end opening of the conduit 2. A flame-retardant foam sealing material (for example, a silicon ohm sheet) 7 is provided on the cable 3 so as to contact the ring-shaped adapter 6. This flame-retardant foam sealing material is wound in a band shape on the cable 3, and at this time, this band-shaped flame-retardant foam sealing material is wound until it has an outer diameter larger than the inner diameter of a holding metal fitting described later (Fig. 4). ). Thereafter, the flame-resistant sealing material 8, for example, Dunseal P manufactured by Furukawa Electric Co., Ltd., is placed on the cable 3 adjacent to the flame-retardant foam sealing material 7.

このように電線管2の端部側から難燃性発泡シール材7
および耐炎シール材8をケーブル3に設けた後、第2図
で示された従来の端末部構造で使用された押え金具5と
まつたく同じ二つ割りの押え金具を用いて前記難燃性発
泡シール材7と耐炎シール材8とを包囲して締付ける。
すなわち、筒状の押え金具5はその軸線方向に沿つて縦
割りにされた2つの金具部分から構成され、これら相互
の合わせ面として各側縁には径方向外方へ張り出したフ
ランジ部が形成され、該フランジ部の両端側には両金具
部分を相互に固着一体化するためのねじ取付け孔が形成
されている。この押え金具5の一端は多少絞られてい
て、その一端は電線管2の端部に取付けられたリング状
アダプター6を内包するようにして当該電線管2の一部
を外周から締付けて連結するように取付けられる。この
ように2つ割りの押え金具5が取付けられると、難燃性
発泡シール材7は前述したようにその外径が押え金具5
の内径よりも大きいため強制的に包囲されるべく圧縮さ
れながら押え金具5内に封じ込められる。
In this way, the flame-retardant foam sealing material 7 is applied from the end portion side of the conduit tube 2.
After the flame-resistant sealing material 8 is provided on the cable 3, the flame-retardant foam sealing material is formed by using the same holding metal fitting 5 used in the conventional terminal structure shown in FIG. 7 and the flameproof sealant 8 are surrounded and tightened.
That is, the tubular pressing metal fitting 5 is composed of two metal fitting portions which are vertically divided along the axial direction thereof, and a flange portion protruding outward in the radial direction is formed on each side edge as a mating surface of these metal fitting portions. Further, screw mounting holes are formed at both ends of the flange portion for fixing and integrating both metal fittings with each other. One end of the holding metal fitting 5 is slightly squeezed, and one end of the electric wire tube 2 is tightened and connected so as to include the ring-shaped adapter 6 attached to the end portion of the electric wire tube 2 at one end thereof. Mounted as. When the pressing metal fitting 5 divided in two is attached in this manner, the flame-retardant foam sealing material 7 has an outer diameter of the pressing metal fitting 5 as described above.
Since it is larger than the inner diameter of, it is forcibly enclosed in the holding metal fitting 5 while being compressed so as to be surrounded.

除上のようにして完成された電線管の端末部構造では、
難燃性発泡シール材7が押え金具5内に圧縮状態で封じ
込められていることとこの発泡シール材それ自体の持つ
膨張性とによつて当該発泡シール材7は巻き付けられた
ケーブル3に対してより密着しようとする応力が常に付
与されていることになるため電線管端部での密封性は極
めて優れたものになる。
In the terminal structure of the conduit completed as above,
Due to the fact that the flame-retardant foam sealing material 7 is enclosed in the pressing metal fitting 5 in a compressed state and the expansive property of the foam sealing material itself, the foam sealing material 7 is applied to the wound cable 3. Since the stress for closer contact is always applied, the sealing property at the end of the conduit becomes extremely excellent.

更に、この難燃性発泡シール材7は各気泡内の気体が熱
により膨張をするため著しく体積増加を起す性質がある
ので、もし、隔壁のいずれか側で火災が発生した場合に
は、その熱によつて膨張した難燃性発泡シール材がより
一層ケーブルに密着してその封止効果を一段と発揮す
る。
Further, the flame-retardant foam sealing material 7 has a property that the gas in each bubble expands due to heat, which causes a remarkable volume increase. Therefore, if a fire occurs on either side of the partition wall, The flame-retardant foam sealing material expanded by heat is further closely attached to the cable to further exert its sealing effect.

〔考案の効果〕[Effect of device]

前述したように、本考案の電線管の端末部構造によれ
ば、押え金具の内部であつて電線管端面と耐炎シール材
との間に難燃性発泡シール材を圧縮状態で封じ込めたこ
とによつて耐火性のみならず気密性をも備えることがで
きる。しかも、火災の際にはその熱で各気泡内の気体が
膨張するので難燃性発泡シール材が著しく体積増加を起
すため、より一層ケーブルに密着しその密封性能を発揮
するという優れた効果を奏する。
As described above, according to the end portion structure of the conduit of the present invention, the flame-retardant foam sealing material is enclosed in the compressed state between the end surface of the conduit and the flame-resistant sealing material inside the holding metal fitting. Therefore, not only fire resistance but also airtightness can be provided. Moreover, in the event of a fire, the heat expands the gas in each bubble, causing the flame-retardant foam sealing material to significantly increase in volume, so that it has an excellent effect of further adhering to the cable and exerting its sealing performance. Play.

【図面の簡単な説明】[Brief description of drawings]

第1図は本考案の一実施例に係る電線管の端末部構造を
示す断面図、第2図は従来の電線管の端末部構造を分解
して示す斜視図、第3図は第1図に示された電線管の端
末部構造の形成過程における電線管端部を示す斜視図、
第4図は第1図に示された電線管の端末部構造の形成過
程における押え金具取付け直前の状態を示す断面図であ
る。 2…電線管、3…ケーブル、5…押え金具、6…リング
状アダプター、7…難燃性発泡シール材、8…耐炎シー
ル材。
FIG. 1 is a sectional view showing a terminal structure of a conduit according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a conventional terminal structure of a conduit, and FIG. 3 is FIG. A perspective view showing a conduit end portion in the process of forming the terminal structure of the conduit shown in FIG.
FIG. 4 is a cross-sectional view showing a state immediately before the attachment of the holding metal fitting in the process of forming the terminal portion structure of the conduit shown in FIG. 2 ... Conduit tube, 3 ... Cable, 5 ... Holding metal fitting, 6 ... Ring adapter, 7 ... Flame-retardant foam sealing material, 8 ... Flame resistant sealing material.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】電線管を通るケーブル周囲に該電線管を端
部に接して難燃性発泡シール材を設け、これに隣接して
更に耐炎シール材を前記ケーブル周囲に設け、前記電線
管端部と共に前記耐炎シール材および前記難燃性発泡シ
ール材を該難燃性発泡シール材についてはこれを圧縮状
態にして包囲する押え金具で締付け且つ前記電線管端部
に連結したことを特徴とする電線管の端末部構造。
1. A flame-retardant foam seal material is provided around an end portion of a cable passing through a conduit, and a flame-resistant seal material is further provided adjacent to the cable around the cable. The flame-resistant sealing material and the flame-retardant foam sealing material together with a portion of the flame-retardant foam sealing material in a compressed state and clamped by a holding metal fitting and connected to the conduit tube end portion. Conduit terminal structure.
JP1985005416U 1985-01-21 1985-01-21 Conduit terminal structure Expired - Lifetime JPH0733536Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985005416U JPH0733536Y2 (en) 1985-01-21 1985-01-21 Conduit terminal structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985005416U JPH0733536Y2 (en) 1985-01-21 1985-01-21 Conduit terminal structure

Publications (2)

Publication Number Publication Date
JPS61123616U JPS61123616U (en) 1986-08-04
JPH0733536Y2 true JPH0733536Y2 (en) 1995-07-31

Family

ID=30481906

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985005416U Expired - Lifetime JPH0733536Y2 (en) 1985-01-21 1985-01-21 Conduit terminal structure

Country Status (1)

Country Link
JP (1) JPH0733536Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6340036B2 (en) * 2016-06-07 2018-06-06 矢崎総業株式会社 Exterior end cap and wire harness

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5837723U (en) * 1981-09-04 1983-03-11 古河電気工業株式会社 Fireproof and airtight structure for cable penetrations
JPS59149418U (en) * 1983-03-25 1984-10-05 古河電気工業株式会社 Conduit terminal structure

Also Published As

Publication number Publication date
JPS61123616U (en) 1986-08-04

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