GB2091498A - A device for holding cables - Google Patents

A device for holding cables Download PDF

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Publication number
GB2091498A
GB2091498A GB8137998A GB8137998A GB2091498A GB 2091498 A GB2091498 A GB 2091498A GB 8137998 A GB8137998 A GB 8137998A GB 8137998 A GB8137998 A GB 8137998A GB 2091498 A GB2091498 A GB 2091498A
Authority
GB
United Kingdom
Prior art keywords
pressure part
extension piece
cable
spiral
assembly nipple
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.)
Granted
Application number
GB8137998A
Other versions
GB2091498B (en
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.)
Lapp KG U I
U I Lapp KG
Original Assignee
Lapp KG U I
U I Lapp KG
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 Lapp KG U I, U I Lapp KG filed Critical Lapp KG U I
Publication of GB2091498A publication Critical patent/GB2091498A/en
Application granted granted Critical
Publication of GB2091498B publication Critical patent/GB2091498B/en
Expired legal-status Critical Current

Links

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
    • H01R13/59—Threaded ferrule or bolt operating in a direction parallel to the cable or wire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • F16L5/06—Sealing by means of a swivel nut compressing a ring or sleeve
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
    • H02G3/0616—Joints for connecting tubing to casing
    • H02G3/0625—Joints for connecting tubing to casing with means for preventing disengagement of conductors
    • H02G3/0658—Joints for connecting tubing to casing with means for preventing disengagement of conductors with means constricting the conductor-insulation

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Insulating Bodies (AREA)
  • Supports For Pipes And Cables (AREA)

Abstract

The device has two component parts, namely a hollow cylindrical assembly nipple (18) for leading a cable (14) or the like through an orifice (12) and a pressure part (20) which can be attached to the assembly nipple (18) and by means of which the cable is fixed axially in this pressure part. To ensure that the cable cannot be bent or kinked harmfully the rear end of the pressure part (20) has a hollow and flexible extension piece (46), preferably a spiral, which extends in the axial direction of the pressure part and through which the cable emerging from the pressure part is threaded. <IMAGE>

Description

SPECIFICATION A device for holding cables, leads, hoses and similar articles The invention relates to a device for holding cables, leads, hoses and similar articles, with a hollow cylindrical assembly nipple to be threaded by a cable or the like, and with a pressure part for attachment to the assembly nipple to cause the cable or the like to be fixed by radial pressure in the assembly nipple.
A number of devices of this kind are known.
They serve, for example, for leading electrical cables or the like out of housings and fixing cables to the housings in order to relieve tension.
Conveniently, such devices also have a gasket which provides a liquid-tight seal around the cable or the like in the assembly nipple.
The relief of tension provided by such devices often means that a cable is kinked at the rear end of the pressure part, when cables are being laid or during the handling of appliances on which electrical leads are held by means of such devices.
A main object of the invention is to improve the construction of such devices, so that cables or the like are no longer kinked at the outlet point of the devices.
According to the invention there is provided a device for holding cables, leads, hoses or similar articles, comprising a hollow cylindrical assembly nipple to be threaded by a cable or the like, and a pressure part for attachment to the assembly nipple to cause the cable or the like to be fixed by radial pressure in the assembly nipple, the pressure part having at its rear end a hollow flexible extension piece which extends axially of the pressure part and whose length is a multiple of the length of the pressure part.
The extension piece may be non-detachably attached on to the rear end of the pressure part, for example, it may be slipped on to the pressure part and fastened thereto by engagement means.
The extension piece can be designed in various ways. For example, it can be tubular and made of material which is sufficiently stiff for the tube as a whole to bend under tensile stress on a cable or the like and thereby prevents the cable from kinking.
The tubular extension piece may be of relatively hard material, provided that slits which are opposite one another in pairs, are made in its shell, pairs of slits adjacent to one another having to be arranged offset by 900 to one another, and the slits associated with one another must be made to end at a relatively short distance from the axis of the extension piece.
In a preferred embodiment of the invention, the extension piece is in the form of a spiral. This can be a metal spiral which has one of its ends embedded into a plastic pressure part, which can be carried out in the injection mould during the injection-moulding of the pressure part.
It is especially advantageous that the spiralshaped extension piece should be a plastic moulding. The front end of this moulding can be fastened in a part, especially in the set screw of a cable screw-connection, for which purpose, after insertion into the respective part of the cable screw-connection, the front end must either be expanded thermally within this part or be provided with longitudinal slits, so that it is compressed radially for insertion into the part receiving it and, in its final inserted position, can spring open again and, in so doing, engage, for example, behind a chamfered face.
From the production angle it is advantageous that the pressure part and the spiral-shaped extension piece be formed as an integral plastic moulding.
The free end piece of the spiral-shaped extension piece is advantageously designed as a closed, especially cylindrical, ring, the inside diameter of which is slightly greater than the diameter of the cable or similar article to be led through the device.
An embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings in which:~ Fig. 1 is a longitudinal view partly in section of a device according to the invention which is installed in an orifice of a wall, Fig. 2 is a side view, illustrated partially in a longitudinal section, of an assembly nipple of the device of Figure 1, Fig. 3 is an end of view of the assembly nipple, seen in the direction of the arrow A of Figure 2, Fig. 4 is a side view, illustrated partially in a longitudinal section, of a pressure part of the device combined with an extension piece, and Fig. 5 is an end view of the pressure part, seen in the direction of the arrow B of Figure 4.
In Figure 1, 10 designates a housing wall whici is penetrated by a cylindrical orifice 12 through which an electrical cable 14 is led for installation purposes. The cable has to be fixed in relation to the housing wall 10. The device according to the invention, designated as a whole by 16, serves for this purpose and comprises two main components, an assembly nipple 18 and a pressure part 20.
The assembly nipple 18 is made of a tough anc elastic plastic, especially poiyamide (for example.
nylon VI) and has, on its side located on the left in Figure 1, an outer connecting thread 22 and an outer hexagonal supporting collar 24 which is necessary for assembly in the housing wall 1 0. Ar external thread 26 adjoins the supporting collar 24, and a cap-like set screw 28 of the pressure part 20 is screwed on to the thread 26.
As is shown in Figures 2 and 3, several clamping tongues 30 are integrally moulded coaxially at the right end face of the assembly nipple 18 and, extend up to the external thread 26, and are separated from one another by obliquely extending slits 32, Figure 3. The clamping tongues 30 and slits 32 alternate with each other and together form a bracing collar 34 in which a hollow cylindrical annular gasket 36 is inserted coaxially.
As Figure 2 shows, the assembly nipple 18 is undercut at 38, at the starting point of its clamping tongues 30. The annular gasket 36 engages positively in the undercut 38. As a result of this and by means of the clamping tongues 34, the annular gasket 36 is retained non-detachably in the assembly nipple.
Figures 4 and 5 show the set screw 28 in the form of a cap or a cap nut having a hexagonal collar 40 which assists assembly and an internal thread 42, by means of which the set screw is screwed on to the external thread 26 of the assembly nipple. The inner side of the set screw 28 facing away from the hexagonal collar 40 is made curved, or in the form of a truncated cone as illustrated, and interacts with the free ends of the clamping tongues 30, as will be described below.
Advantageously there is on the inner side of the set screw 28 a grooving or serration 44 which preferably extends obliquely to the axis of the set screw and which interacts with the ends of the clamping tongues 30 and prevents rotation between the assembly nipple 18 and the set screw 28.
As Figures 1 and 4 show, the set screw 28 has at its rear end a hollow flexible extension piece 46 which receives the cable within it. By means of this extension piece, the length of which is a multiple, for example four to five times the length of the set screw 28, kinking of the electrical cable or similar article led out from the rear end of the set screw is prevented.
In the embodiment illustrated, this extension piece is injection-moulded with the set screw 28 as an integral plastic moulding and is spiralshaped. At the free end this extension piece is formed as a closed, hollow, cylindrical ring 48.
The spiral-shaped extension piece tapers conically towards its rear end.
As shown in Figure 1, in the assembled state the supporting collar 24 of the assembly nipple 18 bears against the housing wall 10, and the assembly nipple is fixed in the wall by means of a lock nut 50 screwed on to the connecting thread 22.
When the set screw 28 is screwed onto the external thread 26 of the assembly nipple, the two parts 1 6, 1 8 are connected to one another in such a way that the clamping tongues 30 are supported on the sloping or curved inner side of the set screw forming a support bearing 52 and, when this set screw is attached, are gradually moved in the form of a fan towards the centre of the device.
As a result, the bracing collar 34 formed by the ends of the clamping tongues is applied peripherally against the cable 14 introduced into the device, and a relief of tension in the cable is achieved. At the same time, the hollow cylindrical gasket 36 which is attached on the inside nondetachably, is pressed against the cable and provides the desired seal around the cable.
Because of the fan-shaped arrangement of the clamping tongues 30 which partially overlap one another, there arises in the region of the grooving or serration 44 a frictional or positive abutment into which the individual clamping-tongue segments of the toothing engage. Thus, in the state shown in Figure 1 , the bracing collar 34 provides not only relief of tension, but also a protection against rotation of the set screw 28.
Sealing means can also be provided between the supporting collar 24 and the housing wall 10, in order to enable the device to be installed in the wall in a liquid-tight manner. This can be effected in various ways, for example, the face of the supporting collar resting against the wall 10 may have a sealing profile, or an annular gasket can be introduced between these parts.
The device according to the invention can have other constructions, in particular as regards the design of the assembly nipple and of the pressure part. The device described is characterised by special assembly and sealing properties which result from the combination of the set screw and the preferably spiral-shaped extension piece, with a result that the device according to the invention allows kink-free leading of cables or similar articles through orifices, while at the same time, the cable is relieved of tension and sealed into the orifice through which it passes.

Claims (11)

1. A device for holding cables, leads, hoses or similar articles, comprising a hollow cylindrical assembly nipple to be threaded by a cable or the like, and a pressure part for attachment to the assembly nipple to cause the cable or the like to be fixed by radial pressure in the assembly nipple, the pressure part having at its rear end a hollow flexible extension piece which extends axially of the pressure part and whose length is a multiple of the length of the pressure part.
2. A device according to Claim 1 , wherein the extension piece is connected, non-detachably, to the rear end of the pressure part.
3. A device according to Claim 2, wherein the extension piece is slipped on to the pressure part.
4. A device according to Claim 2, wherein the extension piece is fastened non-detachably, on the pressure part by engagement means.
5. A device according to any one of the preceding Claims, wherein the extension piece is in the form of a spiral.
6. A device according to Claim 5, wherein one end piece of the extension piece is a metal spiral, the pressure part is of plastic, and the metal spiral is embedded into the plastic pressure part
7. A device according to Claim 5, wherein the sprial-shaped extension piece is formed by a plastic moulding the front end of which is fastened on to a screw thread on the assembly nipple.
8. A device according to Claim 5, wherein the pressure part and spiral-shaped extension piece are formed as an integral plastic moulding.
9. A device according to Claim 8, wherein the free end of the spiral-shaped extension piece is designed as a closed ring.
10. A device according to Claim 9, wherein the free end of the extension piece is cylindrical.
11. A device for holding cables, leads, hoses or similar articles, substantially as herein described with reference to the accompanying drawings.
GB8137998A 1981-01-20 1981-12-16 A device for holding cables Expired GB2091498B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813101558 DE3101558C2 (en) 1981-01-20 1981-01-20 Device for holding cables, lines, hoses or similar objects

Publications (2)

Publication Number Publication Date
GB2091498A true GB2091498A (en) 1982-07-28
GB2091498B GB2091498B (en) 1985-01-30

Family

ID=6122913

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8137998A Expired GB2091498B (en) 1981-01-20 1981-12-16 A device for holding cables

Country Status (4)

Country Link
JP (1) JPS57140984A (en)
DE (1) DE3101558C2 (en)
FR (1) FR2498287B1 (en)
GB (1) GB2091498B (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116781A (en) * 1982-03-09 1983-09-28 Tore Georg Palmaer Cable support
GB2165663A (en) * 1984-10-16 1986-04-16 British Telecomm Bend limiter
EP0182575A2 (en) * 1984-11-12 1986-05-28 Raychem Limited Electrical insulator
US4874331A (en) * 1988-05-09 1989-10-17 Whittaker Corporation Strain relief and connector - cable assembly bearing the same
US5397243A (en) * 1993-09-03 1995-03-14 Macmurdo, Sr.; Michael Electrical cord protection wrap and plug cover
US5823817A (en) * 1996-10-24 1998-10-20 Hamilton Beach/Proctor-Silex, Inc. Cord guard
EP0920085A1 (en) * 1997-11-29 1999-06-02 Alcatel Element with one-sided electrical connector and manufacturing method
EP2493040A1 (en) 2011-02-28 2012-08-29 GEWISS S.p.A. Cable gland
US20130133774A1 (en) * 2011-11-30 2013-05-30 Tekni-Plex, Inc. Anti-kinking device for garden or water hose
US20130133772A1 (en) * 2011-11-30 2013-05-30 Tekni-Plex, Inc. Anti-kinking device for garden or water hose
US20140361531A1 (en) * 2013-06-10 2014-12-11 Delavan Inc Tube strain relievers
US20150115597A1 (en) * 2013-10-29 2015-04-30 Swan Products Llc Flexible hose guard
WO2018153661A1 (en) * 2017-02-22 2018-08-30 Wabco Europe Bvba Plug coupling with strain relief for a connecting cable
US10107431B2 (en) 2013-10-29 2018-10-23 Swan Products, Llc Flexible hose guard

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60194710A (en) * 1984-03-15 1985-10-03 鎌田　嘉作 Long article fastening jig
DE3412116C2 (en) * 1984-03-31 1994-01-20 Lapp U I Gmbh & Co Kg Bending protection that can be retrofitted to a pressure screw of cable, line and hose screw connections
DE3903354C1 (en) * 1989-02-04 1990-02-01 Anton Hummel Gmbh Metallwarenfabrik, 7808 Waldkirch, De
US5143409A (en) * 1989-08-30 1992-09-01 Titeflex Corporation Stress relief device
DE19610000A1 (en) * 1996-03-14 1997-09-18 Hans Votteler Safety device for connection and connection points of high pressure hoses
USD406428S (en) 1997-07-02 1999-03-02 Hamilton Beach/Proctor-Silex, Inc. Cord guard
DE202004010663U1 (en) * 2004-07-07 2005-11-17 Reiku Gmbh Metal nut with cable bending protection for screening onto outer thread of cable bushing is inserted into plastics housing and positively in it secured without turning facility
DE202007013313U1 (en) 2007-09-21 2007-11-29 Truplast Kunststofftechnik Gmbh Kink protection for a line
CN102794590A (en) * 2012-09-11 2012-11-28 溧阳市超强链条制造有限公司 Special protection ring for connection lead wire connector of electric welding machine
DE102016120040B4 (en) 2016-10-20 2024-02-29 Delfingen Fr-Anteuil S.A. Acorn nut arrangement and cable gland
JP6424358B2 (en) * 2016-11-21 2018-11-21 株式会社サンメディカル技術研究所 Cable protector
CN107120478A (en) * 2017-05-25 2017-09-01 国网山东省电力公司青岛供电公司 A kind of cable fixture
CN107591756A (en) * 2017-09-27 2018-01-16 句容市大唐电气有限公司 One kind carries bell-mouthed wall bushing

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US2971178A (en) * 1956-02-13 1961-02-07 Welex Inc Flexible connector for conductor core cable
DE1820360U (en) * 1957-06-19 1960-10-27 Hoerder Huettenunion Ag INSERTABLE AND FOLDABLE STUGE WITH I-SHAPED CROSS SECTION FOR VEHICLES, IN PARTICULAR FOR RAIL VEHICLES.
US3054848A (en) * 1958-04-08 1962-09-18 Halliburton Co Logging tool coupling apparatus
DE1820380U (en) * 1960-06-24 1960-10-27 Miele & Cie CABLE STRAIN RELIEF.
CH449095A (en) * 1967-02-10 1967-12-31 Alfred Grossauer Elektrotechn Cable gland
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JPS599209Y2 (en) * 1974-06-27 1984-03-23 日本電産コパル株式会社 Programmed electric shutter exposure compensation mechanism
DE2500388C3 (en) * 1975-01-07 1981-08-27 Hans 5463 Unkel Simon Strain relief cable clamp with a large clamping area
DD137869A1 (en) * 1978-07-13 1979-09-26 Dietmar Kaufmann DEVICE FOR CABLE TRAIN AND BENDING RELIEF FOR LINE CONNECTIONS
DE2918705C2 (en) * 1979-05-09 1982-11-25 Wolf-Geräte GmbH, 5240 Betzdorf Cable holder for hanging a power cable on the handle of an electric lawn mower
DE3018119C2 (en) * 1980-05-12 1983-04-14 Simon, Hans, 5463 Unkel Cable entry with strain relief for housings of electrical machines and devices

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116781A (en) * 1982-03-09 1983-09-28 Tore Georg Palmaer Cable support
GB2165663A (en) * 1984-10-16 1986-04-16 British Telecomm Bend limiter
EP0182575A2 (en) * 1984-11-12 1986-05-28 Raychem Limited Electrical insulator
EP0182575A3 (en) * 1984-11-12 1988-01-20 Raychem Limited Electrical insulator
US4827081A (en) * 1984-11-12 1989-05-02 Raychem Limited Helical insulator containing at least one optical fiber
US4874331A (en) * 1988-05-09 1989-10-17 Whittaker Corporation Strain relief and connector - cable assembly bearing the same
US5397243A (en) * 1993-09-03 1995-03-14 Macmurdo, Sr.; Michael Electrical cord protection wrap and plug cover
US5823817A (en) * 1996-10-24 1998-10-20 Hamilton Beach/Proctor-Silex, Inc. Cord guard
EP0920085A1 (en) * 1997-11-29 1999-06-02 Alcatel Element with one-sided electrical connector and manufacturing method
ITMI20110290A1 (en) * 2011-02-28 2012-08-29 Gewiss Spa CABLE PRESS DEVICE
EP2493040A1 (en) 2011-02-28 2012-08-29 GEWISS S.p.A. Cable gland
US20130133774A1 (en) * 2011-11-30 2013-05-30 Tekni-Plex, Inc. Anti-kinking device for garden or water hose
US20130133772A1 (en) * 2011-11-30 2013-05-30 Tekni-Plex, Inc. Anti-kinking device for garden or water hose
US9261222B2 (en) * 2011-11-30 2016-02-16 Swan Holdings, Llc Anti-kinking device for garden or water hose
US20140361531A1 (en) * 2013-06-10 2014-12-11 Delavan Inc Tube strain relievers
US9989187B2 (en) * 2013-06-10 2018-06-05 Delavan Inc. Tube strain relievers
US20150115597A1 (en) * 2013-10-29 2015-04-30 Swan Products Llc Flexible hose guard
US10107431B2 (en) 2013-10-29 2018-10-23 Swan Products, Llc Flexible hose guard
WO2018153661A1 (en) * 2017-02-22 2018-08-30 Wabco Europe Bvba Plug coupling with strain relief for a connecting cable
CN110199449A (en) * 2017-02-22 2019-09-03 威伯科欧洲有限责任公司 Plug connector with the pulling force removable part for connection cables
US10727624B2 (en) * 2017-02-22 2020-07-28 Wabco Europe Bvba Plug coupling with strain relief for a connecting cable
CN110199449B (en) * 2017-02-22 2022-07-26 威伯科欧洲有限责任公司 Plug connector with pull relief for connecting cables

Also Published As

Publication number Publication date
FR2498287A1 (en) 1982-07-23
FR2498287B1 (en) 1986-11-14
GB2091498B (en) 1985-01-30
DE3101558A1 (en) 1982-09-16
JPS57140984A (en) 1982-08-31
DE3101558C2 (en) 1983-12-01

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 19991216