EP0517937B1 - Rail mounted housing with strain relief - Google Patents

Rail mounted housing with strain relief Download PDF

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Publication number
EP0517937B1
EP0517937B1 EP91109526A EP91109526A EP0517937B1 EP 0517937 B1 EP0517937 B1 EP 0517937B1 EP 91109526 A EP91109526 A EP 91109526A EP 91109526 A EP91109526 A EP 91109526A EP 0517937 B1 EP0517937 B1 EP 0517937B1
Authority
EP
European Patent Office
Prior art keywords
clamping
moulded component
walls
behind
molded part
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
EP91109526A
Other languages
German (de)
French (fr)
Other versions
EP0517937A1 (en
Inventor
Evi Halbinger
Herbert Neburg
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.)
Siemens AG
Original Assignee
Siemens AG
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
Priority to DK91109526.3T priority Critical patent/DK0517937T3/en
Priority to EP91109526A priority patent/EP0517937B1/en
Priority to DE59103703T priority patent/DE59103703D1/en
Priority to ES91109526T priority patent/ES2064810T3/en
Priority to AT91109526T priority patent/ATE114879T1/en
Application filed by Siemens AG filed Critical Siemens AG
Priority to PT100577A priority patent/PT100577A/en
Priority to US07/895,891 priority patent/US5314352A/en
Publication of EP0517937A1 publication Critical patent/EP0517937A1/en
Application granted granted Critical
Publication of EP0517937B1 publication Critical patent/EP0517937B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/585—Grip increasing with strain force

Definitions

  • the invention relates to an installation housing which is closed by a cover and is provided with a strain relief at a cable entry opening.
  • Installation housings such as those used for miniature circuit breakers and residual current circuit breakers or for other devices that can be arranged on mounting rails, are usually riveted or screwed together.
  • installation housings for devices in building system technology one would also like to provide strain relief means for cables to be introduced, in order to relieve cables at terminals, as are common in general installation technology, against train. At the same time, one wants to save space and get by with thin housing walls for economic reasons. Conventional strain relief devices cannot then be attached.
  • the invention has for its object to develop an installation housing, which is closed by a lid and provided with strain relief, which is particularly economical to manufacture and assemble.
  • the described object is achieved by an installation housing according to claim 1.
  • the installation housing in particular for building system technology, has a molded part with at least one clamping lip between walls that may not be sufficiently connected, which part can be inserted between the walls.
  • at least one clamping plane in which opposing gripping tabs of the walls are clamped by the arms of the molded part engaging behind them the molded part is secured against tilting by means of guides on the molded part and walls.
  • it fulfills three functions, namely tensioning, jamming a line and guiding against tilting. Tensioning eliminates the need for conventional tensioning devices such as rivets, screw connections or gluing in this area.
  • the molded part can only be used with the intention of bracing a housing with its cover without providing strain relief.
  • the molded part can then be made correspondingly simplified.
  • the molded part forms gripping edges or knobs on an externally accessible side in order to make it easier to release by hand. It is also advantageous to make recesses or support ribs for tools, such as screwdrivers, on which the molded part can be gripped and lifted.
  • the engaging arms of the molded part can be designed in a simple manner in the manner of tongue and groove for a connection.
  • the installation housing 1 according to FIG. 1 is closed by a cover 2.
  • a molded part 3 is inserted between the side walls and forms a clamping lip 4 for clamping a line 5 to counter-clamping areas 6.
  • the molded part 3 has a clamping plane in which opposite gripping tabs 7 of the walls are clamped by the arms 8 of the molded part engaging behind them.
  • One cf. Figure 2. By guide means 9 on molded part 3 and walls of the installation housing, cf. Figures 3 and 6, the molded part 3 is secured against tilting.
  • gripping edges 10 are formed on one side of the molded part 3 that is accessible from the outside.
  • gripping edges 10 are formed on one side of the molded part 3 that is accessible from the outside.
  • the molded part 3 can be gripped behind with a tool in the manner of a screwdriver 13 and lifted out or levered out under support on housing edges.
  • the engaging arms 8 of the molded part 3 are designed in a particularly simple manner in the exemplary embodiment for a tongue-and-groove connection, the side walls of the housing, or the cover of the housing, forming U-shaped gripping tabs 7.
  • the guide means 9 on the molded part 3 are each advantageously designed as resilient arms with snap hooks 14 according to FIGS. 3 and 4 in such a way that they can lock behind a knob in the guide means in the wall.
  • the molded part 3 is then secured against being pulled off; however, it is releasable if the spring force is overcome.
  • the molded part 3 is seated in front of a clamp body 15 with clamps for connecting conductors. Screwless clamps which can be opened by means of opening members 16 are expediently used.

Landscapes

  • Installation Of Indoor Wiring (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Connection Or Junction Boxes (AREA)
  • Connection Of Plates (AREA)
  • Casings For Electric Apparatus (AREA)
  • Clamps And Clips (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)

Abstract

An installation housing (1), which is closed by a cover (2), is provided with strain relief on a lead insertion opening, especially for building system technology. A moulding (3), which forms at least one clamping lip (4) for clamping a lead (5) on opposing clamping regions (6), can be inserted between walls which may be connected in a manner which is not adequate. The moulding (3) is secured against tilting by guide means (9) in at least one clamping plane in which opposite gripping lugs (7) of the walls are braced by arms (8) on the moulding (3), which engage behind them. <IMAGE>

Description

Die Erfindung bezieht sich auf ein Installationsgehäuse, das von einem Deckel abgeschlossen ist und mit einer Zugentlastung an einer Leitungseinführungsöffnung versehen ist.The invention relates to an installation housing which is closed by a cover and is provided with a strain relief at a cable entry opening.

Installationsgehäuse, wie man sie bei Leitungsschutzschaltern und Fehlerstromschutzschaltern oder bei anderen auf Tragschienen aufreihbaren Geräten verwendet, werden üblicherweise vernietet oder verschraubt. Bei Installationsgehäusen für Geräte der Gebäudesystemtechnik möchte man für einzuführende Leitungen auch Zugentlastungsmittel vorsehen, um Leitungen an Klemmen, wie sie bei der allgemeinen Installationstechnik gebräuchlich sind, gegen Zug zu entlasten. Zugleich möchte man um Platz zu sparen und aus wirtschaftlichen Gründen mit dünnen Gehäusewänden auskommen. Herkömmliche Zugentlastungsvorrichtungen lassen sich dann nicht anbringen.Installation housings, such as those used for miniature circuit breakers and residual current circuit breakers or for other devices that can be arranged on mounting rails, are usually riveted or screwed together. In the case of installation housings for devices in building system technology, one would also like to provide strain relief means for cables to be introduced, in order to relieve cables at terminals, as are common in general installation technology, against train. At the same time, one wants to save space and get by with thin housing walls for economic reasons. Conventional strain relief devices cannot then be attached.

Der Erfindung liegt die Aufgabe zugrunde, ein Installationsgehäuse, das von einem Deckel abgeschlossen und mit Zugentlastung zu versehen ist, zu entwickeln, das in Fertigung und Montage besonders wirtschaftlich ist.The invention has for its object to develop an installation housing, which is closed by a lid and provided with strain relief, which is particularly economical to manufacture and assemble.

Die Lösung der geschilderten Aufgabe erfolgt durch ein Installationsgehäuse nach Patentanspruch 1. Das Installationsgehäuse, insbesondere für die Gebäudesystemtechnik, weist zwischen gegebenenfalls nicht ausreichend verbundenen Wänden ein Formteil mit zumindest einer Klemmlippe auf, das zwischen den Wänden einführbar ist. In zumindest einer Spannebene, in der gegenüberliegende Greiflaschen der Wände durch diese hintergreifende Arme des Formteils verspannt werden, ist durch Führungsmittel an Formteil und Wänden das Formteil gegen Verkippen gesichert. Es erfüllt in sich ergänzender Weise drei Funktionen, nämlich Verspannen, Verklemmen einer Leitung und Führen gegen Verkippen. Durch das Verspannen erübrigen sich in diesem Bereich Verspannungsmittel herkömmlicher Art, wie Nieten, Verschraubungen oder Verkleben. Außerdem ist im Bereich des zugentlastenden Formteils ein Ausbiegen der Wände infolge der Zugentlastung vermieden. Verständlicherweise kann man das Formteil auch nur mit der Absicht verwenden, ein Gehäuse mit seinem Deckel zu verspannen, ohne eine Zugentlastung vorzusehen. Das Formteil kann dann entsprechend vereinfacht ausgeführt werden.The described object is achieved by an installation housing according to claim 1. The installation housing, in particular for building system technology, has a molded part with at least one clamping lip between walls that may not be sufficiently connected, which part can be inserted between the walls. In at least one clamping plane, in which opposing gripping tabs of the walls are clamped by the arms of the molded part engaging behind them the molded part is secured against tilting by means of guides on the molded part and walls. In a complementary manner, it fulfills three functions, namely tensioning, jamming a line and guiding against tilting. Tensioning eliminates the need for conventional tensioning devices such as rivets, screw connections or gluing in this area. In addition, bending of the walls due to the strain relief is avoided in the area of the strain-relieving molded part. Understandably, the molded part can only be used with the intention of bracing a housing with its cover without providing strain relief. The molded part can then be made correspondingly simplified.

Es ist günstig, wenn das Formteil an einer von außen zugänglichen Seite Greifkanten oder Greifnoppen bildet, um das Lösen von Hand zu erleichtern. Es ist auch vorteilhaft, Ausnehmungen oder Abstützrippen für zur Hand liegende Werkzeuge wie Schraubendreher auszuführen, an denen das Formteil hintergriffen und ausgehoben werden kann.It is expedient if the molded part forms gripping edges or knobs on an externally accessible side in order to make it easier to release by hand. It is also advantageous to make recesses or support ribs for tools, such as screwdrivers, on which the molded part can be gripped and lifted.

Die hintergreifenden Arme des Formteils können für eine Verbindung in einfacher Weise nach Art von Nut und Feder ausgeführt werden.The engaging arms of the molded part can be designed in a simple manner in the manner of tongue and groove for a connection.

Es ist weiter günstig; die Führungsmittel am Formteil jeweils als federnden Arm mit Schnapphaken auszubilden, der hinter eine Nocke im Führungsmittel der Wand verrastbar ist. Es ist dadurch ein besonders sicherer Halt des Formteils gewährleistet.It is still cheap; form the guide means on the molded part in each case as a resilient arm with snap hooks which can be locked behind a cam in the guide means of the wall. This ensures a particularly secure hold of the molded part.

Die Erfindung soll nun anhand von in der Zeichnung grob schematisch wiedergegebenen Ausführungsbeispielen näher erläutert werden:

In FIG 1
ist ein Installationsgehäuse abgebrochen und teilweise aufgebrochen sowie im Bereich des Formteils geschnitten veranschaulicht.
In FIG 2
ist die Aufsicht auf das Gehäuse nach Figur 1 wiedergegeben.
In FIG 3
ist ein Formteil von seiner zum Gehäuseinneren weisenden Seite wiedergegeben.
In FIG 4
ist das Formteil nach Figur 3 von seiner gegenüberliegenden Seite, also von der nach außen weisenden Stirnseite, dargestellt.
In FIG 5
ist die Seitenansicht des Formteils nach Figur 3 und 4 wiedergegeben.
In FIG 6
ist die Aufsicht auf das Formteil nach Figur 3 dargestellt.
In FIG 7
ist ein Installationsgehäuse mit Formteil in Seitenansicht wiedergegeben.
The invention will now be explained in more detail with reference to exemplary embodiments shown roughly schematically in the drawing:
In FIG. 1
an installation housing is broken off and partially broken open and illustrated cut in the area of the molded part.
In FIG. 2
is the top view of the housing shown in Figure 1.
In FIG. 3
is a molded part shown from its side facing the interior of the housing.
In FIG. 4
the molded part according to FIG. 3 is shown from its opposite side, that is to say from the outward-facing end face.
5
is the side view of the molded part shown in Figures 3 and 4.
6
the supervision of the molded part according to FIG. 3 is shown.
In FIG. 7
is an installation housing with molded part shown in side view.

Das Installationsgehäuse 1 nach Figur 1 wird von einem Deckel 2 abgeschlossen. Zwischen den Seitenwänden ist ein Formteil 3 eingesetzt, das eine Klemmlippe 4 zum Verklemmen einer Leitung 5 an Gegenklemmbereiche 6 bildet. Das Formteil 3 weist im Ausführungsbeispiel eine Spannebene auf, in der gegenüberliegende Greiflaschen 7 der Wände durch diese hintergreifende Arme 8 des Formteils verspannt werden. Man vgl. Figur 2. Durch Führungsmittel 9 an Formteil 3 und Wänden des Installationsgehäuses, man vgl. auch die Figuren 3 und 6, wird das Formteil 3 gegen Verkippen gesichert.The installation housing 1 according to FIG. 1 is closed by a cover 2. A molded part 3 is inserted between the side walls and forms a clamping lip 4 for clamping a line 5 to counter-clamping areas 6. In the exemplary embodiment, the molded part 3 has a clamping plane in which opposite gripping tabs 7 of the walls are clamped by the arms 8 of the molded part engaging behind them. One cf. Figure 2. By guide means 9 on molded part 3 and walls of the installation housing, cf. Figures 3 and 6, the molded part 3 is secured against tilting.

An einer von außen zugänglichen Seite des Formteils 3 sind Greifkanten 10, im Ausführungsbeispiel treppenförmig nach Figur 1, ausgebildet. Durch eine Ausnehmung 11, bzw. eine Abstützrippe 12 kann das Formteil 3 mit einem Werkzeug nach Art eines Schraubendrehers 13 hintergriffen und ausgehoben bzw. unter Auflage an Gehäusekanten ausgehebelt werden.On one side of the molded part 3 that is accessible from the outside, gripping edges 10, in the exemplary embodiment stepped according to FIG. 1, are formed. Through a recess 11 or a support rib 12, the molded part 3 can be gripped behind with a tool in the manner of a screwdriver 13 and lifted out or levered out under support on housing edges.

Die hintergreifenden Arme 8 des Formteils 3 sind im Ausführungsbeispiel in besonders einfacher Weise für eine Verbindung nach Art von Nut und Feder ausgeführt, wobei die Seitenwände des Gehäuses, bzw. der Deckel des Gehäuses, U-förmige Greiflaschen 7 bilden.The engaging arms 8 of the molded part 3 are designed in a particularly simple manner in the exemplary embodiment for a tongue-and-groove connection, the side walls of the housing, or the cover of the housing, forming U-shaped gripping tabs 7.

Die Führungsmittel 9 am Formteil 3 sind jeweils als federnde Arme mit Schnapphaken 14 nach Figuren 3 und 4 vorteilhaft so ausgeführt, daß sie hinter eine Noppe im Führungsmittel in der Wand verrasten können. Das Formteil 3 ist dann gegen Abziehen gesichert; es ist jedoch lösbar, wenn die Federkraft überwunden wird.The guide means 9 on the molded part 3 are each advantageously designed as resilient arms with snap hooks 14 according to FIGS. 3 and 4 in such a way that they can lock behind a knob in the guide means in the wall. The molded part 3 is then secured against being pulled off; however, it is releasable if the spring force is overcome.

Das Formteil 3 sitzt im Ausführungsbeispiel nach Figur 1 vor einem Klemmkörper 15 mit Klemmen zum Anschließen von Leitern. Zweckmäßigerweise werden schraubenlose Klemmen verwendet, die mittels Öffnungsgliedern 16 geöffnet werden können.In the exemplary embodiment according to FIG. 1, the molded part 3 is seated in front of a clamp body 15 with clamps for connecting conductors. Screwless clamps which can be opened by means of opening members 16 are expediently used.

Claims (5)

  1. Wiring housing (1), which is closed by a cover (2) and is provided with a strain relief device at a cable entry opening, in particular of a building services system, wherein there is insertable between possibly inadequately connected walls a moulded component (3), which forms at least one clamping lip (4) for clamping a cable (5) against counter-clamping regions (6) and which at least in one clamping plane, in which opposing gripping lugs (7) of the walls are braced by arms (8) of the moulded component (3) which engage behind them, is prevented from tilting by guide means (9) on the moulded component (3) and on the walls.
  2. Wiring housing according to claim 1,
    characterized in that one side of the moulded component (3) which is accessible from the outside forms gripping edges (10) or gripping nubs.
  3. Wiring housing according to claim 1,
    characterized in that recesses (11) or supporting ribs (12) are formed, behind which screwdrivers (13) may engage for lifting out the moulded component (3).
  4. Wiring housing according to claim 1,
    characterized in that the arms (8) of the moulded component (3), which grip from behind, are designed for a connection in the style of a tongue and groove.
  5. Wiring housing according to claim 1,
    characterized in that the guide means (9) on the moulded component (3) each form a spring arm with snap-action hooks (14), which may latch behind a cam in the guide means of the wall.
EP91109526A 1991-06-11 1991-06-11 Rail mounted housing with strain relief Expired - Lifetime EP0517937B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP91109526A EP0517937B1 (en) 1991-06-11 1991-06-11 Rail mounted housing with strain relief
DE59103703T DE59103703D1 (en) 1991-06-11 1991-06-11 Installation housing with wire strain relief.
ES91109526T ES2064810T3 (en) 1991-06-11 1991-06-11 INSTALLATION BOX WITH CABLE COUNTERRACTION DEVICE.
AT91109526T ATE114879T1 (en) 1991-06-11 1991-06-11 INSTALLATION HOUSING WITH WIRE STRAIN RELIEF.
DK91109526.3T DK0517937T3 (en) 1991-06-11 1991-06-11 Installation housing with strain relief
PT100577A PT100577A (en) 1991-06-11 1992-06-09 BOX FOR ELECTRICAL INSTALLATIONS
US07/895,891 US5314352A (en) 1991-06-11 1992-06-09 Strain relief wiring housing assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91109526A EP0517937B1 (en) 1991-06-11 1991-06-11 Rail mounted housing with strain relief

Publications (2)

Publication Number Publication Date
EP0517937A1 EP0517937A1 (en) 1992-12-16
EP0517937B1 true EP0517937B1 (en) 1994-11-30

Family

ID=8206815

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91109526A Expired - Lifetime EP0517937B1 (en) 1991-06-11 1991-06-11 Rail mounted housing with strain relief

Country Status (7)

Country Link
US (1) US5314352A (en)
EP (1) EP0517937B1 (en)
AT (1) ATE114879T1 (en)
DE (1) DE59103703D1 (en)
DK (1) DK0517937T3 (en)
ES (1) ES2064810T3 (en)
PT (1) PT100577A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5744754A (en) * 1997-03-05 1998-04-28 Hubbell Incorporated Electrical receptacle incorporating integral electrical wire strain relief arrangement
JP3371842B2 (en) * 1999-02-23 2003-01-27 住友電装株式会社 Press-fit waterproof connector and method of manufacturing the same

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178129B (en) * 1961-02-16 1964-09-17 Siemens Ag Arrangement of a residual current circuit breaker with unprotected terminals in a closed housing
JPS5724032Y2 (en) * 1977-01-26 1982-05-25
DE3110144C2 (en) * 1981-03-16 1983-05-19 Minnesota Mining and Manufacturing Co., 55133 Saint Paul, Minn. Strain relief for electrical conductors in an electrical connector for non-stripped conductors
US4749370A (en) * 1982-09-02 1988-06-07 Amp Incorporated Cable clamp for an electrical connector
US4516822A (en) * 1984-02-27 1985-05-14 Amp Incorporated Round cable adaptor for modular plug
FR2575868B1 (en) * 1985-01-10 1987-04-17 Merlin Gerin TERMINAL COVERS FOR MODULAR ELECTRICAL APPARATUS
FR2580860B1 (en) * 1985-04-17 1987-05-22 Merlin Gerin TERMINAL COVER FOR LOW VOLTAGE ELECTRICAL APPARATUS WITH MODULAR INSULATING HOUSING
US4749369A (en) * 1987-03-13 1988-06-07 Wang Shun H Connector
US4816619A (en) * 1988-06-29 1989-03-28 Ncr Corporation Passive strain relief apparatus
DE3842058A1 (en) * 1988-12-14 1990-06-28 Asea Brown Boveri Electrical switching device having an electromagnetic switch drive
US5021610A (en) * 1990-01-04 1991-06-04 Square D Company Strain relief connection

Also Published As

Publication number Publication date
DE59103703D1 (en) 1995-01-12
ES2064810T3 (en) 1995-02-01
DK0517937T3 (en) 1995-05-15
ATE114879T1 (en) 1994-12-15
EP0517937A1 (en) 1992-12-16
US5314352A (en) 1994-05-24
PT100577A (en) 1994-05-31

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