GB2154811A - A connection arrangement for an electrically screened sleeve - Google Patents

A connection arrangement for an electrically screened sleeve Download PDF

Info

Publication number
GB2154811A
GB2154811A GB08504359A GB8504359A GB2154811A GB 2154811 A GB2154811 A GB 2154811A GB 08504359 A GB08504359 A GB 08504359A GB 8504359 A GB8504359 A GB 8504359A GB 2154811 A GB2154811 A GB 2154811A
Authority
GB
United Kingdom
Prior art keywords
sleeve
conductive members
electrically
wall
conductive
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
GB08504359A
Other versions
GB8504359D0 (en
GB2154811B (en
Inventor
Sidney Harold Martin
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.)
Fujitsu Services Ltd
Original Assignee
Fujitsu Services 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 Fujitsu Services Ltd filed Critical Fujitsu Services Ltd
Publication of GB8504359D0 publication Critical patent/GB8504359D0/en
Publication of GB2154811A publication Critical patent/GB2154811A/en
Application granted granted Critical
Publication of GB2154811B publication Critical patent/GB2154811B/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/64Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581Shield structure
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • Y10T29/49169Assembling electrical component directly to terminal or elongated conductor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • Y10T29/49174Assembling terminal to elongated conductor

Description

1 GB 2 154811 A 1
SPECIFICATION
A connection arrangement for an electrically screened sleeve BACKGROUND OF THE INVENTION
This invention relates to a connection arrangement for an electrically screened sleeve.
Such sleeves are utilised to carry electrical cables which are required for the interconnection of separate units of electronic equipment forming, for example, a computer installation. In order to maintain continuity of the screening,the screening layer of each sleeve must be connected by the connection arrangement to the conductive casing of each unit.
As a sleeve may carry many electrical cables, it is not uncommon for such sleeves to be of large diameter. It will be realised in this instance that the sleeve will be difficult to bend or form thus producing problems when the connection must be made in a restricted space.
The object of the present invention is to provide a connection arrangement which over- 90 comes this problem.
SUMMARIES OF THE INVENTION According to a first aspect of the invention, there is provided a connection arrangement including; a screened sleeve having a wall comprising an outer electrically insulating layer and an inner electrically conductive screening layer; electrically conductive mem- bers secured to open flaps formed in the wall so that electrical connections are produced between the conductive members and the inner layer, the conductive members forming a frame bounding an aperture left in the wall by the open flaps; and a connection plate of conductive material having an aperture therein arranged to receive the frame; the arrangement being such as to enable electrical cables housed within the sleeve to be passed through the apertures in the wall of the sleeve and the connection plate when the frame is positioned in the connection plate.
According to a second aspect of the invention there is provided a method of connecting an electrically screened sleeve for housing electrical cables to a unit of electrical equipment, the sleeve having a wall comprising an outer electrically insulating layer and an inner electrically conductive screening layer, the method including the steps of; cutting through the wall of the sleeve to produce flaps therein; extending the flaps outside the sleeve to define an aperture in the wall of the sleeve; securing electrically conductive mem- bers to the extended flaps so that electrical connection is made between the flaps and the conductive members, the conductive members forming a frame bounding the aperture; and mating the frame formed by the conductive members with an aperture in a conductive connection plate included in the unit of electrical equipment.
According to a third aspect of the invention there is provided an electrically screened sleeve for housing electrical cables, the sleeve having a wall comprising an outer electrically insulating layer and an inner electrically conductive screening layer, the sleeve including electrically conductive members secured to open flaps formed in the wall, so that electrical connections are produced between the conductive members and the inner layer, the conductive members forming a frame bounding an aperture left in the wall by the open flaps, the arrangement being adapted to mate with a connection plate of conductive material having an aperture therein arranged to receive the frame formed by the conductive members.
BRIEF DESCRIPTION OF THE DRAWINGS
One embodiment of the invention will now be described, by way of example, with refer ence to the accompanying drawings, in which:
Figure 1 is a schematic perspective view of a connection arrangement for an electrically screened sleeve.
Figure 2 shows the formation of flaps in the wall of the screened sleeve.
Figure 3 shows a connection plate forming part of the arrangement.
Figure 4 shows a detail of the connection arrangement of the invention, and Figure 5 is a perspective view of a further detail of the connection arrangement of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to Figure 1 of the drawings, electrical cables 1, e.g. for the transmission of data signals, and/or other signals, are housed in a flexible sleeve 2 which is intended to provide protection, i.e. screening, against electrical signal interference. The sleeve comprises a laminate construction including an inner conductive screening layer and an electrically insulating outer layer. Since the sleeve 2 may be required to be fitted after installa- tion of the electrical cables, it is split along the longitudinal direction thereof, and provided with a longitudinal fastener 3. The fastener 3 comprises a continuous beaded portion 4 along one longitudinal edge of the sleeve, and a continuous recess or groove 5 along the other longitudinal edge of the sleeve. An alternative form of the fastener comprises a hook and loop jointing system known under the Registered Trade Name Vel cro. With such an arrangement the electrical cables are thus housed in a flexible tubular sleeve 2, after wrapping the cables with the sleeve and then interlocking the bead 4 and groove 5.
In order to connect one or more of the 2 GB 2154811 A 2 cables to a unit of electrical equipment (not shown), it is necessary to gain access to the interior of the sleeve. In gaining such access it is important that the radio frequency interfer5 ence shielding should not be impaired.
For this purpose, the sleeve is provided with a connection arrangement 6, which defines a rectangular opening 7, located on the opposite side of the sleeve to the fastener 3, through which the cables can pass into the equipment.
As illustrated in Figure 2, this opening 7 is formed by effecting a series of through-cuts or slits in the wall of the sleeve 2. The slits are formed through both the conductive and the insulating layers of the sleeve and include a first slit 8 extending lengthwise of the central line of the sleeve and, at the ends of the first slit 8, slits 9A, 913 and 10A,10B respectively, each angularly disposed to the length of the first slit 8. Each of these slits 9A,913; 1 OA, 1 OB extends from the associated end of the central slit 8 to terminate at a predetermined point 11 for the associated line end.
These termination points 11 lie at the corners of a rectangle 12 that defines the size of the desired opening. The consequence of the for mation of the five slits is to provide four tapered flaps 13,14,15 and 16 of which the flaps 13,15 extend lengthwise of the sleeve 2 95 and the flaps 14,16 extend transversely to the length of the sleeve 2.
The connection arrangement 6 includes four elongate conductive members 17,18,19 and 20 forming a rectangular frame around the opening 7. Each member has a channel of Ushaped cross-section which is firmly crimped about the associated flap 13-16 as is shown in Figure 4.
As will be particularly seen from Figure 4 the material of each of the flaps 13,14,15 and 16 is folded about a length of wire, or rod 21 in such manner that its free edge overlies the remainder of the flap. The flap and rod 21 are entered into the associated Ushaped channel of member 17, 18,19 or 20, which is then crimped to provide a firm mechanical grip with the folded flap and also electrical connection between the inner layer and the U-shaped member. For reasons to be discussed hereinafter the length of each of the longer metal elongate members 17,19 is greater than the overall length of the flap associated therewith.
The connection arrangement 6 also includes an electrically conductive connection plate 22 (Figure 3) having a central opening 23. The plate 22 may be an integrally formed part of of the unit of equipment or may be a separate part attachable to the unit. The opening 23 is slightly greater in size than the opening 7 provided in the sleeve 2. The longer sides of the opening 23 terminate as elongate upstanding flanges 24,25 whose height is sub- stantially equal to the depth of the elongate members 17,19.
Referring now to Figure 5, this shows one of the two shorter members 18, 20 which form the rectangular frame. This member includes a rectangular base portion 27, having a length which is slightly shorter than the length of the shortest sides 23A of the rectangular opening 23 of the connection plate 22. An upstanding portion 28 extends from a first longer edge 29 of the base portion 27, this upstanding portion 28 having lugs 30,31 at each end, which extend towards the other longer edge 32 of the base portion. The lower edges 30A,31 A of the lugs 30 and 31 re- spectively are spaced from the upper surface of the base portion 27 so as to define slots 34 adapted to receive the plate 22 in the vicinity of the shorter edge 23A of the opening 23. A raised projection 35 is provided on the base portion 27 so that on engagement of the plate 22 in the abovementioned slots 34, the plate 22 is firmly held in place and electrical connection established.
The upstanding portion 28 is provided with an extension 36 which together with the portion 28, forms the U-shaped channel of the member 18 or 20.
To install the connection arrangement on the sleeve, the flaps 13,14,15 and 16 in the sleeve are deformed upwardly away from the opening. The two members 18,20 are then fitted to the shorter end flaps 14,16 by crimping the flaps in the U-channels formed by the extensions 36 and the upstanding portions 28, after having folded the end flaps over the associated rods 21 such that the screening material of the sleeve is exposed and is thus in electrical contact with the members 18,20. The members 17,19 are then attached to the associated longer flaps 13,15 by gripping them in place after having folded the flaps over the rods.
The members 17,18,19,20 thus form a rectangular frame which is then engaged with the aperture 23 on the connection plate 22. Conveniently the longer U- shaped members 17,19 are first entered through the opening 23 of the plate 22 and positioned so that they abut the upstanding flanges 24,25 of the plate 22.
Following this, the two members 18,20 are secured in position by engagement of the slots 34, with the associated plate ends 23A. In order firmly to secure the members 17,19 in place, a series of U-shaped spring clips 38 are engaged over the flanges 24,25 and the adjacent members 17,19.
It can be seen that the connection arrangement thus provides a continuous electrical connection between the inner conductive layer of the sleeve 2 and the connection plate 22, thus ensuring that there is no leakage of electrical interference at the point where the sleeve connects with the plate. It can also be seen that the connection arrangement allows 3. 0 GB 2 154 81 1A 3 connection to be made to the electrical equipment (not shown) through the side wall of the sleeve, thus avoiding the need to bend the sleeve to allow it to enter the equipment.

Claims (13)

1. A connection arrangement including; a screened sleeve having a wall comprising an outer electrically insulating layer and an inner electrically conductive screening layer; electrically conductive members secured to open flaps formed in the wall so that electrical connections are produced between the conductive members and the inner layer, the conductive members forming a frame bounding an aperture left in the wall by the open flaps; and a connection plate of conductive material having an aperture therein arranged to receive the frame; the arrangement being such as to enable electrical cables housed within the sleeve to be passed through the apertures in the wall of the sleeve and the connection plate when the frame is positioned in the connection plate.
2. An arrangement as claimed in Claim 1, 90 in which each electrically conductive member includes a U-shaped part crimped onto a portion of the flap folded over a rod.
3. An arrangement as claimed in Claim 1 or 2, in which the frame is rectangular in shape and in which at least one of the conductive members is formed so as to clip onto an edge of the aperture in the connection plate.
4. An arrangement as claimed in Claim 3, in which at least one of the conductive members abuts a turned-over portion at the edge of the aperture in the connection plate and including U-shaped spring clips securing the conductive member to the turned-over por- tion.
5. An arrangement as claimed in Claim 4, in which an extended portion on at least one of the conductive members abuts a lug formed on an adjacent conductive member, and including further U-shaped spring clips securing the conductive members to one another.
6. A method of connecting an electrically screened sleeve for housing electrical cables to a unit of electrical equipment, the sleeve having a wall comprising an outer electrically insulating layer and an inner electrically conductive screening layer, the method including the steps of cutting through the wall of the sleeve to produce flaps therein; extending the flaps outside the sleeve to define an aperture in the wall of the sleeve; securing electrically conductive members to the extended flaps so that electrical connection is made between the flaps and the conductive members, the conductive members forming a frame bounding the aperture; and mating the frame formed by the conductive members with an aperture in a conductive connection plate included in the unit of electrical equipment.
7. A method as claimed in Claim 6, including the step of securing the conductive members to the connection plate.
8. An electrically screened sleeve for hous- ing electrical cables, the sleeve having a wall comprising an outer electrically insulating layer and an inner electrically conductive screening layer, the sleeve including electrically conductive members secured to open flaps formed in the wall, so that electrical connections are produced between the conductive members and the inner layer, the conductive members forming a frame bounding an aperture left in the wall by the open flaps, the arrangement being adapted to mate with a connection plate of conductive material having an aperture therein arranged to receive the frame formed by the conductive members.
9. An electrically screened sleeve as claimed in Claim 8, in which each electrically conductive member includes a U-shaped part crimped onto a portion of the flap folded over a rod.
10. An electrically screened sleeve as claimed in Claim 8 or 9, including a longitudi nal fastener.
11. A connection arrangement constructed substantially as hereinbefore described with reference to the accompanying drawing.
12. A method of connecting an electrically screened sleeve for housing electrical cables to a unit of electrical equipment as hereinbe fore described with reference to the accom panying drawing.
13. An electrically screened sleeve con structed substantially as hereinbefore de scribed with reference to the accompanying drawing.
Printed in the United Kingdom for Her Majesty's Stationery Office, Dd 8818935, 1985, 4235. Published at The Patent Office, 25 Southampton Buildings, London. WC2A lAY. from which copies may be obtained.
GB08504359A 1984-02-21 1985-02-20 A connection arrangement for an electrically screened sleeve Expired GB2154811B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB848404479A GB8404479D0 (en) 1984-02-21 1984-02-21 Electrical connection arrangement

Publications (3)

Publication Number Publication Date
GB8504359D0 GB8504359D0 (en) 1985-03-20
GB2154811A true GB2154811A (en) 1985-09-11
GB2154811B GB2154811B (en) 1987-11-18

Family

ID=10556920

Family Applications (2)

Application Number Title Priority Date Filing Date
GB848404479A Pending GB8404479D0 (en) 1984-02-21 1984-02-21 Electrical connection arrangement
GB08504359A Expired GB2154811B (en) 1984-02-21 1985-02-20 A connection arrangement for an electrically screened sleeve

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB848404479A Pending GB8404479D0 (en) 1984-02-21 1984-02-21 Electrical connection arrangement

Country Status (5)

Country Link
US (1) US4619488A (en)
AU (1) AU572960B2 (en)
FR (1) FR2559965B1 (en)
GB (2) GB8404479D0 (en)
ZA (1) ZA85988B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0292596B1 (en) * 1987-05-27 1992-09-30 Siemens-Elema AB Method of electrically connecting conductors and electrodes of an implantable electrode lead
US6972367B2 (en) 2001-10-31 2005-12-06 Hellermanntyton Corporation Multi-channel raceway

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1256293B (en) * 1960-03-26 1967-12-14 Sueddeutsche Kabelwerke Zweign Method for connecting a branch cable with an aluminum sheathed main cable in a branch sleeve, in particular for house connections
US3120965A (en) * 1960-06-20 1964-02-11 Cons Mining & Smelting Co Tube connector
US3370122A (en) * 1963-05-30 1968-02-20 Ichikawa Mitsuji Conduit and ground wire connected by a metal strap
US3235651A (en) * 1963-06-17 1966-02-15 Marvin F Tepner Apparatus for making pressure bypass connections to plastic-sheathed cables
US4152538A (en) * 1977-10-19 1979-05-01 Western Electric Company, Incorporated Pressurized cable termination seal and methods of making
US4140870A (en) * 1978-01-23 1979-02-20 Illinois Tool Works Inc. Cable grounding system
CA1117199A (en) * 1979-07-03 1982-01-26 Lawrence G. Novotny Electrical connector
US4518819A (en) * 1981-07-30 1985-05-21 Raychem Corporation Clamp assembly for power cables
US4386814A (en) * 1981-08-17 1983-06-07 Amp Incorporated Kit for converting a panel opening to a shielded pin receptacle

Also Published As

Publication number Publication date
GB8404479D0 (en) 1984-03-28
GB8504359D0 (en) 1985-03-20
ZA85988B (en) 1985-09-25
AU3901185A (en) 1985-09-05
US4619488A (en) 1986-10-28
FR2559965A1 (en) 1985-08-23
FR2559965B1 (en) 1988-08-26
GB2154811B (en) 1987-11-18
AU572960B2 (en) 1988-05-19

Similar Documents

Publication Publication Date Title
CA2033743C (en) Ferrite suppressor case with retaining fingers
EP0442643B1 (en) Shielded connector
US4460239A (en) Connector terminal
US5951336A (en) Terminal fitting
AU565767B2 (en) Idc termination having means to adapt to various conductor sizes
US6814615B2 (en) Coaxial cable connector
US4929195A (en) Shield connector
EP1050932A2 (en) A shielding terminal and method for connecting a shielding terminal
US10910734B2 (en) Shielded cable with terminal
US5866843A (en) Wire shield structure
EP0734097B1 (en) A circuit member and an electrical connection box
GB1568345A (en) Lamp assemblies
US5782651A (en) Electrical connection box
EP0405630B1 (en) Method for forming a cutting contact element
CA1081336A (en) Connector for coupling a ground conductor to the shield of a shielded conductor
US4626058A (en) Connector box for coaxial cable
AU662951B2 (en) Cutting and clamping terminal element
US4619488A (en) Connection arrangement for an electrically screened sleeve
GB2276778A (en) Electrical connector
JPS61126782A (en) Connector for shielded flat cable
US5814769A (en) Ribbon cable with shielded connection
EP0899817B1 (en) Ground device and method of grounding a cable using same
GB2053585A (en) Electrical connector for flat cable
US5750923A (en) Electric shielding metal shell receptacle having movable binding strips
DE4123011A1 (en) CONNECTOR FOR COAXIAL CABLES

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee