GB2427079A - Junctions of electrically screened conduits of a screened cable assembly - Google Patents
Junctions of electrically screened conduits of a screened cable assembly Download PDFInfo
- Publication number
- GB2427079A GB2427079A GB0511710A GB0511710A GB2427079A GB 2427079 A GB2427079 A GB 2427079A GB 0511710 A GB0511710 A GB 0511710A GB 0511710 A GB0511710 A GB 0511710A GB 2427079 A GB2427079 A GB 2427079A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transition
- coupler
- locating formations
- bore
- transitions
- 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
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
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6591—Specific features or arrangements of connection of shield to conductive members
- H01R13/65912—Specific features or arrangements of connection of shield to conductive members for shielded multiconductor cable
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-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
- H01R4/58—Electrically-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
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
- H01R4/646—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail for cables or flexible cylindrical bodies
-
- 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
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
- H02G3/0481—Tubings, i.e. having a closed section with a circular cross-section
-
- 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
Abstract
Junctions or transitions 10,12 which may be in the form of a T-junction tubular arrangement 14 have open ends 16,18 to connect electrically screened conduits (not shown) together, or to allow themselves to be connected to each other. The transitions 10,12 have an index formed inside and adjacent to one of the open ends 16,18 in the form of a series of circumferentially spaced recesses 24 which interconnect with teeth 32 formed on the outer circumference at the ends of a coupler 28, which itself is formed of two parts 30. The coupler 28 allows two of the transitions 10,12 to be connected together, the teeth 32 and recesses 24 preventing relative rotation between the two transition parts 10,12.
Description
and relating to The present invention relates to an electrical harness
transition which can be positively indexed to another like or similar transition Presently, to couple adjacent transitions in a screened cable assembly, a first transition is simply connected to one end of a short length of conduit, and then a second transition is connected to the other end of the conduit. The relative orientations of the two transitions are set, by locking the conduit into position using a locking or termination device Since the transitions are not positively indexed, vibration of the cable assembly causes the relative positioning of the transitions to alter, or even the coupling to work loose. This type of coupling also makes it more troublesome to feed cabling through the transitions, and the use of conduit also requires a matching length of screening material to provide continuity.
The present invention seeks to provide a solution to all these problems.
According to the present invention, there is provided an electrical harness transition for a screened electrical cable assembly, the transition comprising a transition body having a main through-bore and a branch bore communicating with the main through-bore, and means for positively indexing the transition body relative to an adjacent like or similar transition body, so that, when indexed, the two transition bodies are held stationary or substantially stationary relative to each other.
Preferable and/or optional features of the present invention are set forth in claims 2 to 7, inclusive.
The invention will now be more particularly described, by way of example only, with reference to the accompanying drawings, in which Figure 1 shows electrical harness transitions, in accordance with the invention, and an exploded view of a coupler for coupling and indexing the transitions, and Figure 2 shows the two transitions coupled together and positively indexed by the coupler shown in Figure 1.
Referring to the drawings, there is shown two electrical harness transitions 10 and 12 for a screened electrical cable assembly. The transitions 10 and 12 each comprise a forked transition body 14 and screen traps 16 at two ends. Each transition body 14 is hollow and has a main through-bore 18 and a branch bore 20. The branch bore 20 is open at one end and communicates with the main through-bore 18 at the other end.
A screw thread 22 is formed on an exterior surface of each transition body 12 at each end thereof A plurality of circumferentially spaced recesses 24 are formed in a surface of the main-through bore 1 8 and the branch bore 20, at or adjacent to the respective openings 26.
A coupler 28 is also provided as part of the transitions 10 and 12. The coupler 28 has a two part body 30 and includes circumferentially spaced, preferably anti- rotational, teeth 32 formed at each end of the body 30. The teeth 32 of the coupler 28 and the recesses 24 of the transitions bodies 14 are complementarily shaped.
The coupler 28 also includes an internally threaded locking nut 34 at each end of the body 30. Each nut 34 has a radially inwardly projecting flange or lip 36 which engages a respective annular recess 38 formed in the exterior surface of the body of the coupler 28.
The transitions 10, 12 and coupler 28 are formed of material which permits electrical continuity to be maintained. In the present case, the transitions 10, 12 and coupler 28 are formed from moulded plastics material which can be plated with an electrically conductive material.
In use, first and second transitions 10, 12 are located on electrical cabling of a screened assembly, and the two part body 30 of the coupler 28 is assembled interposed between two adjacent ends of the transitions 10, 12. The teeth 32 at one end of the coupler 28 are interdigitated with the corresponding recesses 24 in the bore of the first transition 10, and the locking nut 34 of the coupler 28 is threadingly engaged, typically by hand, with the exterior screw-thread 22 on the first transition 10. This locates the coupler 28 in place and clamps the two part body 30 together.
The first and second transitions 10, 12 are then positioned in their required relative orientations, and the other end of the coupler 28 is then located in the adjacent end of the second transition 12 so that the corresponding teeth 32 and recesses 24 also interdigitate. The remaining locking nut 34 is then threadingly engaged with the exterior screw-thread 22 on the second transition 12 to retain the first and second transitions 10, 12 in their predetermined indexed positions.
Screening material and conduits (not shown) can then be attached to the free ends of the transitions 10, 12 via the screen traps 16.
The first and second transitions 10, 12 can be easily separated from each other, for example, for repair and maintenance, by releasing one or both locking nuts 34 of the coupler28.
It will be understood that the teeth of the coupler can be provided on the or each transition, and the corresponding recesses can be provided on the coupler; or a combination of teeth and recesses can be provided on the transitions and coupler.
Furthermore, if the transitions and/or coupler are directionally specific, then teeth can be provided at one end of the coupler for engagement with recesses on one transition, and recesses can be provided at the other end of the coupler for engagement with teeth on a second transition.
The coupler can have a one part body, instead of a two part body.
Other means for positively indexing the two transition bodies are also envisaged.
For example, instead of providing an independent coupler, teeth can he formed on one transition For positive engagement with recesses formed on the other transition. in this case, to hold the two transitions together once indexed and engaged, an internally threaded locking nut is provided on one transition for screw-threaded engagement with the exterior screwthread provided on the other transition.
Although it is suggested that teeth and recesses are used as the means for positively indexing the two transition bodies, any suitable locating formations could he utilised. For example, first locating formations, as an alternative to teeth, can be pegs or non-continuous ribs or flanges; and second locating formations, as an alternative to recesses, can be slots, gaps or openings.
Furthermore, the recesses described above preferably allow axial entry of the teeth. The teeth, as shown in Figure I, are thus formed in circumferentially spaced relationship on a surface of the coupler so as to project radially outwards while permitting axial engagement. However, the teeth could in effect be castellations/teeth projecting axially from one end of the coupler or, in the case of the above described modification, projecting axially from one end of the adjacent transition.
Although recesses are suggested, provision of the recess inherently forms teeth to the sides of the recesses. Consequently, upon engagement of the transition body and coupler or adjacent transition body, respective sets of teeth interdigitate as they are received in respective recesses.
It is thus possible to provide electrical harness transitions for a screened electrical cable assembly which can be positively indexed to remain stationary or substantially stationary relative to each other. The positive indexing can be achieved either with direct engagement of the two transitions, or via indirect engagement by use of a coupler.
The embodiments described above are given by way of examples only, and other modifications will he apparent to persons skilled in the art without departing from the scope of the invention, as defined by the appended claims.
Claims (8)
- Claims 1. An electrical harness transition for a screened electrical cableassembly, the transition comprising a transition body having a main through-bore and a branch bore communicating with the main through-bore and means for positively indexing the transition body relative to an adjacent like or similar transition body, so that, when indexed, the two transition bodies are held stationary or substantially stationary relative to each other.
- 2. A transition as claimed in claim 1, wherein the positive indexing means includes a plurality of first locating formations formed at or adjacent to an opening of the main through-bore and/or the branch bore, and a coupler having a plurality of second locating formations, complementarily shaped for interdigitation with the first locating formations, the in use coupler coupling together and positively indexing via the first and second locating formations the two said transition 1 5 bodies.
- 3. A transition as claimed in claim 2, wherein the first locating formations are recesses, and the second locating formations are teeth, or vice versa or a combination thereof
- 4. A transition as claimed in claim 2 or claim 3, wherein the coupler includes a locking nut for screw-threaded engagement with a mating screw- thread formed on an exterior surface of the transition body.
- 5. A transition as claimed in any one of claims 2 to 4, wherein the coupler has a one part or two part body.
- 6. A transition as claimed in claim 1, wherein the positive indexing means includes a plurality of first locating formations formed at or adjacent to an opening of the main through-bore and/or the branch bore and which are complementarily shaped to be engagable with second locating formations formed at or adjacent to an opening of a like or similar transition.
- 7. A transition as claimed in claim 6, wherein the first locating formations are recesses, and the second locating formations are teeth, or vice versa, or a combination thereof
- 8. An electrical harness transition for a screened electrical cabJe assembly, substantially as hereinbefore described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0511710A GB2427079B (en) | 2005-06-09 | 2005-06-09 | Improvements in and relating to electrical harness transitions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0511710A GB2427079B (en) | 2005-06-09 | 2005-06-09 | Improvements in and relating to electrical harness transitions |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0511710D0 GB0511710D0 (en) | 2005-07-13 |
| GB2427079A true GB2427079A (en) | 2006-12-13 |
| GB2427079B GB2427079B (en) | 2010-10-20 |
Family
ID=34835343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0511710A Expired - Fee Related GB2427079B (en) | 2005-06-09 | 2005-06-09 | Improvements in and relating to electrical harness transitions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2427079B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107437776A (en) * | 2017-10-07 | 2017-12-05 | 江苏捷通管业科技有限公司 | A kind of cross power cross connecting pipe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2070345A (en) * | 1980-02-21 | 1981-09-03 | Superflexit Sa | Dividing box for electrical transmission systems |
| GB2267183A (en) * | 1992-05-12 | 1993-11-24 | B & H Ltd | Cable ducting |
-
2005
- 2005-06-09 GB GB0511710A patent/GB2427079B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2070345A (en) * | 1980-02-21 | 1981-09-03 | Superflexit Sa | Dividing box for electrical transmission systems |
| GB2267183A (en) * | 1992-05-12 | 1993-11-24 | B & H Ltd | Cable ducting |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2427079B (en) | 2010-10-20 |
| GB0511710D0 (en) | 2005-07-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20150609 |