GB2193390A

GB2193390A - Screened electrical connector assemblies

Info

Publication number: GB2193390A
Application number: GB8618496A
Authority: GB
Inventors: John Michael Faller
Original assignee: Allied Corp
Current assignee: Allied Corp
Priority date: 1986-07-29
Filing date: 1986-07-29
Publication date: 1988-02-03
Anticipated expiration: 2006-07-29
Also published as: GB2193390B; DE3781344T2; EP0255358B1; DE3781344D1; GB8618496D0; EP0255358A3; EP0255358A2

Abstract

A screwed electrical connector assembly has a first surface mounted multi contact connector (1) which receives a second plug-in connector (2) the connector (2) being retained in position by circlips on studs (13, 14) which screw into the heads of mounting screws (9 & 10) for the first connector, the studs (13 & 14) passing through a screening back shell (7) which is thus retained in engagement with the mounting surface (3) by nuts (21, 22). <IMAGE>

Description

GB2193390A 1 SPECIFICATION Fig 4 illustrates on even larger scale a

threaded stud of the type used in the as Screened electrical connector assemblies sembly of Fig 1.

Referring to Fig 1, the screened assembly The invention relates to a screened electrical 70 comprises a first surface-mountable multi-con connector assembly and relates especially but tact connector element denoted by reference not exclusively to an enclosure for a connec- 1 and a further plug-in element denoted by tor of a multi-core cable to an electrical equip- reference 2. The connector elements 1 and 2 ment case. are of known form, typically each comprising Sub-minature multi-contact electrical connec- 75 two linearly arranged rows of contacts, one tors are well known for making interconnec- row being staggered in relation to the other.

tions between items of communication, con- Such contacts are, typically, either nine, fif trol or computer systems via multi-core teen, twenty-five, thirty-seven or fifty in num cables. Typically, an interconnection may corn- ber. Contacts of one of the elements therefore prise a cable carrying at each end a plug-in 80 provide pins and those on the other provide connector which is insertable into a socket or receptacles for the respective pins. Connec receptacle attached to an outer surface of a tions to the contacts of element 1 on the respective equipment case. 11 is, therefore, de- mounting surface 3 may be made either by sirable to provide for such connector assem- solder connections to the contacts or by insu blies to have electro magnetic interference and 85 lation displacement connections (I.D.C.). Simi contamination proof shells and the present in- larly, the separate conductor cores 6 from an vention seeks to provide a simple secure and incoming cable 5 (only six of which are readily mountable assembly. shown) are connected to respective contacts According to the present invention there is of element 2 by soldering or I.D.C. The as provided a screened electrical connector assembly further comprises a shell having a sembly comprising a first surface-mountable main body part 7 and a recessed cover part connector element having a plurality of con- 23 formed of conducting material, typically tacts cooperable for connection with respec- aluminium alloy, produced in two parts by in tive contacts of a second connector element vestment casting and through an aperture of when in assembled relationship therewith to 95 which the cable 5 passes via a cable screen provide electrical connection with respective trap 8. The first surface mountable connector conductors of a multi-core cable said as- element 1 is mounted to the mounting surfacei sembly having an enclosing shell formed of 3 by means of a screw having a hexagonal electromagnetic inductive screening material head 9 and a further screw having a hexago- and the assembly having common means for 100 nal head 10. The heads of screws 9 and 10 separately retaining the second connector ele- engage flanges 11 and 12 respectively for se ment in an assembled position and for retain- cure surface mounting and the heads 9 and ing said shell in enclosing relationship to a 10 are provided with threaded bores in their mounting surface. upper ends for receiving screw-threaded ends Preferably, the said common means includes 105 of respective mounting studs 13 and 14 the a common screw or stud carrying respective form of which is more clearly illustrated on an means engaging the second element and the enlarged scale in Fig 4.

shell. Referring to Fig 4, it is to be seen that the By designing the shell to have screw or stud 13 has a relatively short threaded portion stud spacings identical to such spacings of 110 15 at the left hand end, followed by two an the first and second connector elements, the nular grooves 16 and 17 for receiving small first connector element, the second connector circlips 18 and 19 respectively (Fig 1). The element and the shell may each be precisely other end of the rod is threaded at 20 for position as required in relation to a mounting finally receiving a suitable threaded nut 21 surface without additional space requirements 115 which is one of two fastening nuts 21 and 22 for further fastening or positioning means for as shown in Fig 1 for retaining the shell 7 in the shell. position. The right hand end also carries an In order that the invention may be more hexagonal hole to receive'an Alien key for cfearly understood and readily carried into ef- tightening.

fect, the same will be further described by 120 The cover part 23 of the shell which is way of example with reference to the accom- denoted by reference 23 and shown in part panying drawing of which: cut-away form in Fig 1, is to be seen Fig 1 illustrates on an enlarged scale a edgewise in Fig. 3 wherein four screw holes partly cut-away view of a screened electrical 24 are also indicated and a thickened area 25 connector assembly 125 fits snugly within the inner peripheral surface Fig 2 illustrates an end view looking inwards 26 of the shell part 7.

on the shell of the assembly of Fig 1 in the Referring briefly to Fig 2, this illustrates an direction of the arrow end view of the main shell part 7 taken from Fig 3 illustrates an edge view of the partly mounting surface 3 wherein the surface cut-away cover of the assembly of Fig 1 and 130mounted periphery 27, apertures 28 and 29 2 GB2193390A 2 for the mounting studs 13 and 14 and solid material and the assembly having common and/or broken outlines are shown at 30, means for separately retaining the second these have optional cable inlet positions which connector in an assembled position and for can be occupied by one, two or three screenretaining said shell in enclosing relationship to traps as required. 70 a mounting surface.

In order to put the assembly together, the 2. A connector assembly as claimed in

Claims

incoming screened cable 5 is assembled into Claim (1) wherein said common

means com its screentrap 8 and mounted in the shell 7 prises a screw or stud carrying respective with sufficient lengths of conductors 6 inside means engaging the second element and the the shell to permit connection in known man- 75 shell.

ner to the contacts of connector element
2.
3. A connector assembly as claimed in The element 2 has studs 13 and 14 assem- Claim (2) wherein said screw or stud co-oper- bled to its mounted flanges by means of the ates with further means fixing the first element respective circlips such as 18 and 29. With to said surface.

the surface mountable connector element 1 80
4. A connector assembly as claimed in fixed in position on the surface 3 by its re- Claim (3) said further means comprising a spective mounting screws 9 and 10, the secscrew means, the head of which is threaded ond connector element 2 is plugged into 1 to receive said threaded stud of the common and the studs 13 and 14 are screwed into the means.

respective threaded apertures of heads 9 and 85
5. A connector assembly as claimed in 10, thus firmly positioning 2 in relation to 1. claim 2, 3 or 4, said screw or stud having Rotation of the studs 13 and 14 is readily locating means for locating it on the second achieved by means of minature Allen key en- element.

agement with the hexagonal hole 31 as indi-
6. A connector assembly as claimed in cated in Fig 4. The shell part 7 has its re- 90 Claim (5) said locating means comprising an cessed cover part 23 attached by means of nular groove and circlips positioned therein.

self-tapping screws through apertures 24 and
7. A connector assembly as claimed in is then introduced over studs 13 and 14 Claim 2, 3, 4, 5 or 6, the outer end of said passing through holes 28 and 29 before final screw or stud being provided with means for screwing down by means of fastening nuts 21 95 receiving a key for tightening during assembly.

and 22
8. A connector assembly as claimed in any It is therefore, seen that the fastening preceeding claim comprising a closed end means comprising the respective studs 13 and adapted for receiving a multi core cable and 14 and the circlips 18, 19 and nuts 21 and an open end adapted to receive said second 22 when attached to screws 9 and 10, proelement and to abut on said surface to com vide for separate positioning and retainment of plete the enclosure thereof.

the connector element 2 and the shell 7. This
9. A screened electrical assembly substan means that given standard spacings for the tially as described herein with reference to studs 13 and 14 and corresponding apera- Figures 1-4 of the accompanying drawing.

tures of the mounting flanges of connector Published 1988 at The Patent Office, State House, 66/71 High Holborn, elements 1 and 2 different shapes and sizes London WC 1 R 4TP. Further copies may be obtained from of the elements may be mounted in a com- The Patent Office, Sales Branch, St Mary Cray, Orpington, Kent BR5 3RD.

mon housing or shell. A typical alternative Printed by Burgess & Son (Abingdon) Ltd. Con. 1/87.

shape will be imposed for example, if the ele- ment 2 is replaced by a filter connector.

In certain applications the first surface mounted conductor element may be mounted on a surface part which is recessed behind the surface against which the enclosing shell is mounted. In that case the lengths of studs such as 13 and 14 may be longer in order still to afford common means for separately retaining the second connector elements and.the shelf in their assigned positions.

CLAIMS 1. A screened electrical connector assembly comprising a first surface- mountable connector element having a plurality of contacts coopera- ble with respective contacts of a second connector element when in assembled relationship therewith to provide electrical connection with respective conductors of a multicore cable said assembly having an enclosing shell formed of electromagnetic inductive screening