AU2003200667A1 - Cable gland for electrical apparatus - Google Patents
Cable gland for electrical apparatus Download PDFInfo
- Publication number
- AU2003200667A1 AU2003200667A1 AU2003200667A AU2003200667A AU2003200667A1 AU 2003200667 A1 AU2003200667 A1 AU 2003200667A1 AU 2003200667 A AU2003200667 A AU 2003200667A AU 2003200667 A AU2003200667 A AU 2003200667A AU 2003200667 A1 AU2003200667 A1 AU 2003200667A1
- Authority
- AU
- Australia
- Prior art keywords
- nipple
- gland
- electrical apparatus
- cable
- cable gland
- 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
Classifications
-
- 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
- H02G15/00—Cable fittings
- H02G15/02—Cable terminations
- H02G15/04—Cable-end sealings
-
- 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
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
- F16L41/082—Non-disconnectible joints, e.g. soldered, adhesive or caulked joints
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Patch Boards (AREA)
- Installation Of Indoor Wiring (AREA)
Description
P/00/011 Regulation 3.2
AUSTRALIA
Patents Act 1990
ORIGINAL
COMPLETE SPECIFICATION STANDARD PATENT Invention Title: "CABLE GLAND FOR ELECTRICAL
APPARATUS"
The following statement is a full description of this invention, including the best method of performing it known to us: -2- BACKGROUND OF THE INVENTION THIS invention relates to cable glands for electrical apparatus.
Generally, electrical apparatus such as electrical distribution boards include unthreaded entries or knockout holes for allowing electrical cables to enter the apparatus. These entries typically are designed to receive cable glands for anchoring electrical cables to the apparatus.
Conventional cable glands connectable to electrical distribution boards normally include a gland body which is connectable to an electrical cable and a nipple extending from the gland body for connecting the cable gland to a gland plate on the electrical distribution board. The gland nipple carries an external thread and is connected to the gland plate by inserting the nipple through a knockout hole in the gland plate and engaging a lock nut with the external thread so as to lock the gland nipple to the gland plate.
The space available for manipulating a spanner or the like within the electrical distribution board tends to be limited, especially when the density of cables entering the board is relatively high, and this makes it difficult to fasten the lock nuts to the gland nipples.
-3- It is an object of the present invention to provide an alternative cable gland which is relatively easy to install.
SUMMARY OF THE INVENTION According to a first aspect of the invention there is provided a cable gland for electrical apparatus including: a gland body defining a bore for receiving an electrical cable; and a deformable nipple extending from the gland body, the nipple being designed to enter an opening leading to or into an electrical apparatus and to engage a deformer within or adjacent the electrical apparatus so as to be deformed into an anchor with at least one lateral formation that prevents subsequent withdrawal of the nipple from the opening.
Typically, the electrical apparatus is an electrical distribution board and the opening is a knockout hole in a gland plate on the electrical distribution board.
In one embodiment of the invention, the at least one lateral formation comprises an outwardly extending lip at the free end of the nipple.
In another embodiment, the at least one lateral formation comprises an annular rib along the length of the nipple.
Typically, the gland body defines a shoulder adjacent the nipple which is -4designed to butt against the gland plate when the at least one lateral formation is formed, thereby to prevent rotation of the gland body relative to the distribution board.
The deformable nipple may be formed integrally with the gland body.
Preferably, the cable gland is formed from a deformable metal or metal alloy.
According to a second aspect of the invention there is provided a cable gland for electrical apparatus including: a gland body defining a bore for receiving an electrical cable; and a deformed gland nipple which extends through an opening leading to or into an electrical apparatus and which forms an anchor with at least one lateral formation that prevents withdrawal of the nipple from the opening, In accordance with a third aspect of the invention there is provided a method of anchoring a cable gland for electrical apparatus including the steps of: inserting a deformable nipple on a cable gland body through an opening leading to or into an electrical apparatus; and deforming the nipple within or adjacent the electrical apparatus into an anchor including at least one lateral formation that prevents withdrawal of the nipple from the opening.
In one arrangement, the deformation of the nipple locks the cable gland body to the electrical apparatus so as to prevent rotation of the gland body relative to the electrical apparatus.
BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail, by way of example only, with reference to the accompanying drawings in which: Figure 1 shows a cross-sectional view of a portion of a gland plate on an electrical distribution board with a cable gland body according to the present invention extending into the electrical distribution board; Figure 2 shows a cross-sectional view of the cable gland body of Figure 1 with the gland nipple deformed within the electrical distribution board; and Figure 3 shows a cross-sectional view similar to that of Figure 2 with the gland nipple deformed into another configuration within the electrical distribution board.
DESCRIPTION OF THE PREFERRED EMBODIMENTS In Figure 1 of the drawings a cable gland body 10 according to the present invention is shown with a nipple 12 extending through a gland plate 14 on an electrical distribution board, only a portion of which is illustrated. The gland body 10 defines a bore 16 for receiving an electrical cable (not shown) and -6carries an internal thread 18 which is sized to engage an external thread on a compression nut or a cone nut (not illustrated) forming part of the components for gripping the electrical cable.
The nipple 12 is formed integrally with the gland body 10 and projects from a shoulder 20 on the gland body, as shown. In this embodiment of the invention, the gland body and nipple are formed from a deformable metal or metal alloy.
To connect the gland body 10 to the gland plate 14, the nipple 12 is inserted through an opening 22 in the gland plate so that the shoulder 20 butts against the gland plate in the manner illustrated in Figure 1. The free end 24 of the nipple 12 is then deformed with a purpose made tool (not illustrated) into a bell mouth or split petal formation which defines a lateral projection or lip 26 extending outwardly from the nipple. The projection 26 is arranged to butt against the inside of the gland plate 14 so that the gland plate is sandwiched between the projection 26 and the shoulder 20, as shown in Figure 2, thereby to anchor the cable gland to the gland plate. In this condition, the gland body 10 is fixed to the electrical distribution board and a cable secured to the gland body passes through the bore 16 and into the electrical distribution board. Typically, the components for gripping the electrical cable are secured to the gland body 10 by means of a compression nut or a cone nut after connecting the gland body to the electrical distribution board.
Figure 3 of the accompanying drawings illustrates the cable gland body with the nipple 12 deformed into another configuration within the electrical distribution board. In this case, the nipple 12 has been deformed into an anchor including an annular rib 28 which projects outwardly to anchor the -7gland body 10 to the gland plate 14. Similarly to the Figure 2 configuration, the nipple 12 is buckled to form the rib 28 by a purpose made tool and a portion of the gland plate 14 is sandwiched between the rib 28 and the shoulder It will be appreciated that the shape and/or configuration of the lateral formations on the gland nipple 12 could vary and that the drawings merely illustrate two possible variations. It should also be appreciated that the gland body 10 is relatively easy to install even when a number of electrical cables enter the electrical distribution board adjacent one another.
Claims (19)
1. A cable gland for electrical apparatus including: a gland body defining a bore for receiving an electrical cable; and a deformable nipple extending from the gland body, the nipple being designed to enter an opening leading to or into an electrical apparatus and to engage a deformer within or adjacent the electrical apparatus so as to be deformed into an anchor with at least one lateral formation that prevents subsequent withdrawal of the nipple from the opening.
2. A cable gland according to claim 1, wherein the gland body defines a shoulder adjacent the nipple which is designed to bufftt against the electrical apparatus when the at least one lateral formation is formed, thereby to prevent rotation of the gland body relative to the electrical apparatus.
3. A cable gland according to either.claim 1 or claim 2, wherein the at least one lateral formation comprises an outwardly extending lip at the free end of the nipple.
4. A cable gland according to either claim 1 or claim 2, wherein the at least one lateral formation comprises an annular rib along the length of the nipple.
A cable gland according to any one of the preceding claims, wherein -9- the deformable nipple is formed integrally with the gland body.
6. A cable gland according to any one of the preceding claims, which is formed from a deformable metal or metal alloy.
7. A cable gland according to any one of the preceding claims, wherein the electrical apparatus is an electrical distribution board and the opening is a knockout hole in a gland plate on the electrical distribution board.
8. A cable gland for electrical apparatus including: a gland body defining a bore for receiving an electrical cable; and a deformed gland nipple which extends through an opening leading to or into an electrical apparatus and which includes an anchor with at least one lateral formation that prevents withdrawal of the nipple from the opening.
9. A cable gland according to claim 8, wherein the gland body defines a shoulder adjacent the nipple which together with the at least one lateral formation prevents the gland body from rotating relative to the electrical apparatus. A cable gland according to either claim 8 or claim 9, wherein the at least one lateral formation comprises an outwardly extending lip at the free end of the nipple.
10
11. A cable gland according to either claim 8 or claim 9, wherein the at least one lateral formation comprises an annular rib along the length of the nipple.
12. A cable gland according to any one of claims 8 to 11, wherein the deformed nipple is formed integrally with the gland body.
13. A cable gland according to any one of claims 8 to 12, wherein the electrical apparatus is an electrical distribution board and the opening is a knockout hole in a gland plate on the electrical distribution board.
14. A method of anchoring a cable gland for electrical apparatus including the steps of: inserting a deformable nipple on a cable gland body through an opening leading to or into an electrical apparatus; and deforming the nipple within or adjacent the electrical apparatus into an anchor including at least one lateral formation that prevents withdrawal of the nipple from the opening.
A method according to claim 14, wherein the at least one lateral formation comprises an outwardly extending lip at the free end of the nipple.
16. A method according to claim 14, wherein the at least one lateral formation comprises an annular rib along the length of the nipple. 11
17. A method according to any one of claims 14 to 16, wherein the nipple is deformed so as to prevent rotation of the cable gland body relative to the electrical apparatus.
18. A method according to any one of claims 14 to 17, wherein the electrical apparatus is an electrical distribution board and the opening is a knockout hole in a gland plate on the electrical distribution board.
19. A cable gland for electrical apparatus substantially as herein described with reference to either of the illustrated embodiments. A method of anchoring a cable gland for electrical apparatus substantially as herein described with reference to either of the illustrated embodiments. DATED this Twenty-fourth day of February 2003. PRATLEY INVESTMENTS (PROPRIETARY) LIMITED By its Patent Attorneys FISHER ADAMS KELLY
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA200202462 | 2002-03-27 | ||
| ZA2002/2462 | 2002-03-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2003200667A1 true AU2003200667A1 (en) | 2003-10-23 |
Family
ID=25589432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2003200667A Abandoned AU2003200667A1 (en) | 2002-03-27 | 2003-02-25 | Cable gland for electrical apparatus |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2003200667A1 (en) |
| GB (1) | GB2389245A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6639989B2 (en) * | 2015-05-29 | 2020-02-05 | ヨネ株式会社 | Jig for installing water faucet |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3518359A (en) * | 1968-03-28 | 1970-06-30 | Amp Inc | Heat-shrinkable sealing and strain-relief fittings for electrical cables |
| GB1294510A (en) * | 1970-06-08 | 1972-11-01 | Shrink Tube & Plastic Limiited | Sealing element |
| JPS53106662A (en) * | 1977-03-02 | 1978-09-16 | Toyota Motor Corp | Splicing method for tubular member and plate type member |
| GB1604444A (en) * | 1977-09-30 | 1981-12-09 | Raychem Ltd | Heatrecoverable articles |
| US4711472A (en) * | 1986-09-02 | 1987-12-08 | Hubbell Incorporated | Connector for non-metallic conduit |
| GB2316457B (en) * | 1996-08-20 | 2000-10-18 | Emhart Inc | Improved threaded blind nut assembly |
-
2003
- 2003-01-29 GB GB0302114A patent/GB2389245A/en not_active Withdrawn
- 2003-02-25 AU AU2003200667A patent/AU2003200667A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| GB2389245A (en) | 2003-12-03 |
| GB0302114D0 (en) | 2003-03-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK1 | Application lapsed section 142(2)(a) - no request for examination in relevant period |