AU3015400A - Device for testing a cable fitted with a wiring accessory at one end - Google Patents
Device for testing a cable fitted with a wiring accessory at one end Download PDFInfo
- Publication number
- AU3015400A AU3015400A AU30154/00A AU3015400A AU3015400A AU 3015400 A AU3015400 A AU 3015400A AU 30154/00 A AU30154/00 A AU 30154/00A AU 3015400 A AU3015400 A AU 3015400A AU 3015400 A AU3015400 A AU 3015400A
- Authority
- AU
- Australia
- Prior art keywords
- test device
- hole
- retractable member
- wiring accessory
- electrical cable
- 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.)
- Abandoned
Links
- 238000012360 testing method Methods 0.000 title claims description 51
- 235000009917 Crataegus X brevipes Nutrition 0.000 claims 1
- 235000013204 Crataegus X haemacarpa Nutrition 0.000 claims 1
- 235000009685 Crataegus X maligna Nutrition 0.000 claims 1
- 235000009444 Crataegus X rubrocarnea Nutrition 0.000 claims 1
- 235000009486 Crataegus bullatus Nutrition 0.000 claims 1
- 235000017181 Crataegus chrysocarpa Nutrition 0.000 claims 1
- 235000009682 Crataegus limnophila Nutrition 0.000 claims 1
- 235000004423 Crataegus monogyna Nutrition 0.000 claims 1
- 240000000171 Crataegus monogyna Species 0.000 claims 1
- 235000002313 Crataegus paludosa Nutrition 0.000 claims 1
- 235000009840 Crataegus x incaedua Nutrition 0.000 claims 1
- 238000002788 crimping Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 4
- 239000003086 colorant Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000012345 traction test Methods 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/68—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
- G01R31/69—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board of terminals at the end of a cable or a wire harness; of plugs; of sockets, e.g. wall sockets or power sockets in appliances
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Description
r/UUIU II ZLWs/i Regulation 3.2(2)
AUSTRALIA
Patents Act 1990
ORIGINAL
COMPLETE SPECIFICATION STANDARD PATENT a.
a Application Number: Lodged: Invention Title: DEVICE FOR TESTING A CABLE FITTED WITH A WIRING ACCESSORY AT ONE END The following statement is a full description of this invention, including the best method of performing it known to us:- Device for testina a cable fitted with a wiring accessory at one end The present invention relates generally to wiring accessories which are usually fitted to one end of an electrical cable to facilitate insertion thereof into a connecting terminal to make the corresponding connection more reliable and more secure.
It relates more particularly, but not necessarily exclusively, to the situation in which a wiring accessory of the above kind, more usually referred to as a wiring terminal, has a metal part in the form of a sleeve which is designed to be crimped to the previously bared end of the conductive core of the electrical cable to be equipped and an insulating part in the form of a bush 15 which is attached to the metal part and is designed to fit over the insulative sheath of the electrical cable, to cover its end and thereby entirely to reconstitute the a necessary insulation at this location.
It is naturally important for the metal part to be 20 crimped sufficiently firmly, for example using a crimping o o tool, to guarantee effective fixing of the accessory to the electrical cable.
To comply with the applicable standards, it is oo.* Snecessary to be able to test the fixing.
25 Testing is naturally performed on a sampling basis and at present is carried out in the factory or even in a laboratory using a special traction test machine.
Such testing is therefore inevitably carried out at a different time to on-site use of the corresponding crimping tool, and is also inevitably somewhat costly.
A general object of the present invention is to provide a test device enabling testing to be carried out without delay, on site and at the lowest possible cost.
The invention provides a device for testing an electrical cable fitted with a wiring accessory at one end, the device including at least one hole into which the end of the electrical cable opposite that carrying the wiring accessory can be inserted and on which encroaches laterally at least one retractable member forming an abutment for the wiring accessory adapted to yield on application of a given traction force.
For example, in a preferred embodiment of the invention, the retractable member extends at least partway around the perimeter of the hole, and more preferably extends all around the perimeter of the hole, in which case it forms an eyelet, and is joined to the lateral wall of the hole by at least one divisible *attachment.
All that the operator wishing to confirm on site 15 that their crimping tool is working correctly has to do is to insert an electrical cable equipped with a wiring accessory into the hole of the test device until the wiring accessory abuts against the retractable member encroaching on the hole and to pull on the electrical cable with sufficient force: if the wiring accessory is detached from the electrical cable, the crimping of its metallic part to the conductive core of the cable is clearly defective; on the other hand, if it is the 2 retractable member of the test device which yields, so 25 allowing the electrical cable to pass freely through the test device, the crimping is satisfactory.
In practice the test device according to the invention can advantageously take the form of a plate through which the transverse hole(s) pass(es) completely and which can be simply and economically made from a synthetic material.
Given its low cost, and unlike the traction test machines usually employed, the test device according to the invention is therefore a consumable product which can be discarded after use.
Nevertheless, in order to be able to use it several times, the test device according to the invention preferably includes a plurality of single-use holes.
In this case the holes preferably all have the same diameter and all correspond to the same traction force.
In this case, the operator has a set of different test devices, for example of modular form, with hole(s) of different diameters, and which correspond to different traction forces, being distinguished from each other by the use of different colors, for example.
However, as an alternative to this, the one and the same test device according to the invention can include a plurality of holes of different diameters and corresponding to different traction forces.
15 In all cases, the test device according to the invention has the advantage that it is particularly easy to handle because of its shape and its small size.
The features and advantages of the invention will emerge from the following description which is given by 20 way of example and with reference to the accompanying drawings, in which: Figure 1 is a perspective view of part of an electrical cable which the test device according to the invention is more particularly designed to test, S 25 Figure 2 is an elevation view of the test device to a different scale, Figure 3 is a view of the device in cross section taken along the line III-III in Figure 2, Figure 4 is a view of the device in longitudinal section taken along the line IV-IV in Figure 2, Figure 5 shows the detail V from Figure 2 to a larger scale, Figures 6 and 7 show the respective details VI and VII from Figures 3 and 4 to a larger scale, and Figure 8 is a view in cross section which is analogous to that of Figure 3 and shows how the test device according to the invention is used.
As shown in the figures, the overall aim is to test an electrical cable 10 which is fitted with a wiring accessory 11 at one end.
As shown here, for example, the wiring accessory 11 is a wiring terminal.
It therefore has a metal part 12 in the form of a sleeve which is crimped to the previously bared end of the conductive core 13 of the electrical cable 10 and an insulative part 14 in the general form of a bush which fits over the insulative sheath 15 of the electrical oo cable 10 to cover its end.
A wiring accessory 11 of this kind is well known in the art and is not in itself relevant to the present o invention. For this reason it is not described in more detail here.
The electrical cable 10 fitted with the wiring accessory 11 in this way is tested, in accordance with the invention, using a test device 18 including at least one hole 19 into which can be inserted the end of the ooee electrical cable 10 opposite that carrying the wiring accessory 11 and on which encroaches, laterally, as described in more detail later, at least one retractable o o 25 member 20 forming an abutment for the wiring accessory 11 and adapted to yield at a given traction force F.
In practice the hole 19 has a circular contour.
Let D denote its diameter.
The diameter D is greater than the outside diameter D1 of the insulative part 14 of the wiring accessory 11.
It is therefore necessarily greater than the outside diameter D'1 of the insulative sheath 15 of the electrical cable The embodiment of the test device 18 according to the invention shown here takes the general form of a globally rectangular contour plate through which a transverse hole 19 passes completely in the direction of its thickness.
In practice, this embodiment of the test device 18 according to the invention includes a plurality of holes 19 of the same diameter D and all corresponding to the same traction force F.
To be more precise, in this embodiment, all the holes 19 in the test device 18 according to the invention have the same diameter D and they all correspond to the same traction force F.
:..The holes 19 are arranged in a row, for example, as shown here, with a regular pitch P.
There are five holes 19 in the embodiment shown and the row of holes extends substantially parallel to the greatest dimension of the test device 18, substantially halfway between its longitudinal edges.
oeoa Because all the holes 19 are identical, only the retractable member 20 encroaching on one of them is described in more detail below.
In the embodiment shown, that retractable member ee extends around at least part of the perimeter of the hole 19 on which it encroaches and is connected to the lateral wall of the hole 19 by at least one divisible attachment S 25 22.
As in the embodiment shown, the retractable member is preferably an eyelet which extends all around the perimeter of the hole 19 and only one such retractable member 20 then encroaches on the hole 19.
In practice the eyelet forming the retractable member 20 has a circular contour, like the hole 19, and is coaxial with the hole 19.
Let D' denote its inside diameter.
That diameter D' is between the diameter D'1 of the insulative sheath 15 of the electrical cable 10 and the diameter D1 of the insulative part 14 of the wiring accessory 11.
In practice, the eyelet forming the retractable member 20 is at a distance from the lateral wall of the hole 19 and two divisible attachments 22 in diametrally opposed positions detachably connect it to that lateral wall.
Each of the divisible attachments 22 extends transversely, to be more precise radially, relative to the hole 19.
In the embodiment shown, the hole 19 is surrounded by a guide tube 23 on one side at least and is continuous with the inside surface of the guide tube 23.
As shown here, the guide tube 23 is provided on both sides of the hole 19, for example.
As in the embodiment shown, the test device 18 according to the invention preferably has a reinforced .portion 24 which can be gripped between the jaws 25 of a [.vise 26 or any other holding device of that kind, as symbolized in chain-dotted outline in Figure 8.
As shown here, for example, the reinforced portion 24 of the test device 18 is simply a thicker portion of the device.
"In contrast, the remaining portion of the test device 18 forms a thinner portion 27 of reduced volume.
In the embodiment shown, the reduced volume portion 27 is offset transversely relative to the reinforced portion 24 and is reinforced by a peripheral rim 28 whose edge surface is level with the corresponding surface of the reinforced portion 24.
In practice the holes 19 are at the boundary between the reinforced portion 24 and the reduced volume portion 27 and the guide tubes 23 on one side of the holes 19 are entirely within the overall volume delimited by the rim 28 of the reduced volume portion 27, from which they project on the other side.
In practice the guide tubes 23 are substantially the same length on each side of the holes 19.
When the end of the electrical cable 10 opposite that carrying the wiring accessory 11 is inserted into a hole 19, as shown in Figure 8, the insulative part 14, to be more precise the edge surface thereof, of this wiring accessory 11 abuts against the retractable member encroaching on the hole 19.
If sufficient traction force F is then applied to the electrical cable 10, as symbolized by an arrow in Figure 8, either the wiring accessory 11 is detached from the electrical cable 10, if the crimping is defective, or the retractable member 20 yields, if the crimping is satisfactory, being torn away from the lateral wall of the hole 19 at the divisible attachments 22 connecting it thereto.
In practice, the test device 18 according to the invention is part of a set of different test devices 18, the holes 19 of these test devices 18 being all identical in the same test device 18 but having different diameters D and corresponding to different traction forces F from one test device 18 to another. The test devices 18 are distinguished from each other by the use of different colors for example, or by any other means of differentiation, markings or otherwise.
Of course, the present invention is not limited to the embodiment described and shown but encompasses any variant execution and/or use.
Claims (14)
1. A device for testing an electrical cable fitted with a wiring accessory at one end, said device including at least one hole into which the end of said electrical cable opposite that carrying said wiring accessory can be inserted and on which encroaches laterally at least one retractable member forming an abutment for said wiring accessory adapted to yield on application of a given traction force.
2. A test device according to claim 1 wherein said retractable member extends at least partway around the perimeter of said hole and is joined to the lateral wall eeoc of said hole by at least one divisible attachment.
3. A test device according to claim 2 wherein said divisible attachment extends transversely relative to said hole.
4. A test device according to claim 2 or claim 3 wherein said retractable member is an eyelet which extends all around said perimeter of said hole.
5. A test device according to claim 4 wherein said eyelet forming said retractable member 'has a circular contour like said hole and is coaxial with said hole.
6. A test device according to claim 4 or claim wherein said eyelet forming said retractable member is at a distance from said lateral wall of said hole.
7. A test device according to any of claims 2 to 6 including two divisible attachments at diametrally opposite positions relative to each other.
8. A test device according to any of claims 1 to 7 wherein said hole is surrounded by a guide tube on at least one side.
9. A test device according to any of claims 1 to 8 in the form of a plate through which said hole passes completely in the transverse direction.
10. A test device according to any of claims 1 to 9 including a plurality of holes of the same diameter and all corresponding to the same traction force.
11. A test device according to claim 10 wherein all said holes have the same diameter and all correspond to the same traction force.
12. A test device according to any of claims 1 to 11 having a reinforced portion which can be gripped between the jaws of a vise.
13. A test device according to any of claims 1 to 12 forming part of a set of different test devices.
14. A test device substantially as hereinbefore described with reference to the accompanying drawings. too" DATED this 27th day of April, 2000 9 LEGRAND and LEGRAND SNC WATERMARK PATENT TRADEMARK ATTORNEYS 290 BURWOOD ROAD HAWTHORN VICTORIA 3122 9o r
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9905436A FR2793034B1 (en) | 1999-04-29 | 1999-04-29 | CABLE TESTING DEVICE HAVING A WIRING ACCESSORY AT ONE OF ITS END |
| FR9905436 | 1999-04-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU3015400A true AU3015400A (en) | 2000-11-02 |
Family
ID=9545018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU30154/00A Abandoned AU3015400A (en) | 1999-04-29 | 2000-04-27 | Device for testing a cable fitted with a wiring accessory at one end |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1048955A1 (en) |
| AU (1) | AU3015400A (en) |
| FR (1) | FR2793034B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104369133A (en) * | 2014-11-27 | 2015-02-25 | 惠州住成电装有限公司 | Wiring harness rubber plug test fixing fixture |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2411734A (en) * | 2004-03-06 | 2005-09-07 | Raymond John Vassie | Measuring resistance of a connection |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2567272B1 (en) * | 1984-07-03 | 1986-12-26 | Ouest Parisien Cablage | DEVICE FOR CONTROLLING THE RETENTION OF THE PLUGS OF AN ELECTRICAL CONNECTOR |
| US4835855A (en) * | 1987-06-29 | 1989-06-06 | Mts Systems Corporation | Method and apparatus for crimping |
-
1999
- 1999-04-29 FR FR9905436A patent/FR2793034B1/en not_active Expired - Fee Related
-
2000
- 2000-04-27 AU AU30154/00A patent/AU3015400A/en not_active Abandoned
- 2000-04-27 EP EP00401169A patent/EP1048955A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104369133A (en) * | 2014-11-27 | 2015-02-25 | 惠州住成电装有限公司 | Wiring harness rubber plug test fixing fixture |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2793034A1 (en) | 2000-11-03 |
| FR2793034B1 (en) | 2001-07-27 |
| EP1048955A1 (en) | 2000-11-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK1 | Application lapsed section 142(2)(a) - no request for examination in relevant period |