WO2006060907A1 - Electrical equipment lockout device - Google Patents
Electrical equipment lockout device Download PDFInfo
- Publication number
- WO2006060907A1 WO2006060907A1 PCT/CA2005/001852 CA2005001852W WO2006060907A1 WO 2006060907 A1 WO2006060907 A1 WO 2006060907A1 CA 2005001852 W CA2005001852 W CA 2005001852W WO 2006060907 A1 WO2006060907 A1 WO 2006060907A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cable
- container
- tether
- lock assembly
- opening
- Prior art date
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
- H01R13/44—Means for preventing access to live contacts
- H01R13/447—Shutter or cover plate
-
- 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
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
- H01R13/6397—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap with means for preventing unauthorised use
Definitions
- the present invention relates to the field of security devices.
- it relates to a device for preventing the unauthorized use of an appliance or other piece of electrical equipment.
- a commonly occurring requirement is to prevent the unauthorized use of an item of electrical equipment of the type having power cable terminated in a plug that can be plugged into a mains power supply.
- an appliance such as a computer game device, a personal computer, or an entertainment device, from being used by children or other family members at particular times, or at all.
- a device according to the invention can be compact, conveniently made and comparatively inexpensive as well as secure. Accordingly, it represents a useful contribution to the choices available to consumers, especially domestic consumers.
- an electrical equipment lockout device including: a container assembly having a plurality of parts movable relative to each other to define closed and open conditions of the container; and a lock assembly operable by a user to lock the parts together in relative positions corresponding to the closed condition, wherein in the closed condition of the container the parts define an internal space having a cable opening to the exterior of the container, so that a power plug of an item of electrical equipment can be held captive in the internal space with a cable terminated in the plug passing through the cable opening to the exterior of the container.
- the plurality of parts includes a first part and a second part with the second part being rotatable between positions corresponding to the open and closed conditions about a rotation axis defined in the first part; and the rotation axis passes through the internal space.
- the rotation axis passes through the first opening.
- the internal volume may be included in a cavity defined within the first part, said cavity having an opening to the exterior of the first part that includes the cable opening and that when container is in the closed condition is partially closed by said second part leaving open the cable opening.
- the second part is captive in said cavity of the first part.
- said cavity has at least one surface that is an inwardly facing partial surface of revolution centered on the axis of rotation and wherein said second part bears against said at least one surface. That is, in effect, the interior of the cavity acts as a bearing to constrain movement of the second part to rotation about the rotation axis in the first part.
- said first part is preferably an assembly including two components that are fixedly secured to each other and that jointly define said internal cavity.
- the two components may be permanently secured to each other.
- the first and second parts may be made by injection moulding in suitable plastics materials, with the first part having two parts that are ultrasonically welded together with the second part positioned to be held in the cavity thus formed. If the assembly is made of cast or machine metal the joining of the aforesaid parts may be made using a threaded junction of male thread on one part and female thread on the other part that is secured in place by thread adhesive or by means of a mechanical depression that prevents the threaded joint from moving by upsetting the junction of the meshing threads.
- the lock assembly preferably includes a key-operated lock assembly secured to said first part and adapted in a locked condition to position and hold a cam to prevent rotation of said second part relative to said first part.
- the lock assembly may conveniently be positioned approximately on the said rotation axis.
- the direction of key insertion into the locking means may be parallel to said rotation axis.
- a tether is attached to the device to allow the device to be secured to the cable when not in use. Even more preferably, the tether has a locking mechanism that uses the same key as the locking mechanism for the device.
- Figure 1 is a perspective view of a lockout device according to the invention, shown in an "open" condition ready for use;
- Figure 2 is a further perspective view of the device as shown in Figure 1 , with a plug and power cable positioned in the device;
- Figure 3 is a perspective view of the device shown in Figure 1, now in a "closed” condition
- Figure 4 is a further perspective view of the device shown in Figure 1, in a "closed” condition
- Figure 5 is an exploded view of the device shown in Figure 1 ;
- Figure 6 is a cross-sectional view of the device shown in Figure 1 , taken at the station "AA";
- Figure 7 is a cross-sectional view of the device as shown in Figure 6, taken at the station "BB";
- Figure 8 is a perspective view of the device with an attached tether.
- Figure 9 is a cross-section of the locking end of the tether.
- FIG 1 shows a lockout device 10 according to the invention, hi Figurel, device 10 is shown in an "open” condition, and can be seen to have a body 15 with an internal volume 11 into which can be placed a mains power plug 12 and part of a cable 13 that is terminated in the plug 12.
- Figure 2 shows plug 12 and cable 13 placed in the volume 11 of device 10, device 10 still being in open condition.
- An opening 14 in body 15 of device 10 allows placement of the plug 12 and cable 13 in volume 11 in the position shown.
- Figure 3 shows device 10 now in "closed” condition, with the plug 12 and cable 13 in the same positions as in Figure 2. Opening 14 has been closed by a member 16, save for one portion of opening 14 that remains open and acts as a cable opening 17. Cable 13 extends outward though cable opening 17.
- Member 16 is captively held in body 15 of device 10 and is rotatable relative to body 15 about a rotation axis 18 defined in body 15 between the position shown in Figures 1 and 2 and the position shown in Figure 3.
- a key-operable lock mechanism 19 is secured within body 15 and when in a locked condition can hold member 16 in the position shown in Figure 3, as described further below.
- rotation axis 18 passes through cable opening 17, with cable 13 extending substantially along axis 18.
- FIG. 5 to 7 show the internal arrangement of device 10.
- Body 15 is formed by permanently securing together two components, namely a shell 20 and base 21. Opening 14, including cable opening 17, is formed in shell 20.
- Shell 20 defines an internal cavity 22 and also has an opening 23 and an annular end face 24.
- Internal surface 25 of shell 20 is circular in cross-section (save for the presence of opening 14), centered on rotation axis 18.
- Base 21 has an annular end face 26 and an outer wall 27.
- a tubular formation 28 extends inward from wall 27 in an axial direction, i.e. along rotation axis 18.
- Radial strengthening ribs 55 extend between tubular formation 28 and wall 27.
- cutaways 50 are formed in wall 27 with a web 51 therebetween. Web 51 has a hole 52 therethrough to allow for the attachment of identification tags (not shown) or the like.
- the primary use for hole 52 is the attachment of a tether 70 as shown in Figure 8.
- the tether 70 can be used to attach the device 10 to the cable 13 to prevent the device from being lost or misplaced while not in use.
- tether 70 has a locking mechanism 72 that is used to permanently secure the device 10 to the cable 13.
- the locking mechanism 72 can be operable to removably secure the device 10 to the cable 13 in situations where permanent securing is undesirable, such as with a power tool at a job site. In such a case, it may be preferable to have the locking mechanism 72 on the tether 70 use the same key as the lock mechanism 19 on the device 10.
- the tether 70 should be made of a suitable resilient material, such as a braided steel cable.
- the tether 70 has locking mechanism 72 attached a short distance from the end 78 of the tether 70.
- the end 78 of the tether 70 has a plug 76 which is inserted into a slot 74 in locking mechanism 72 after tether 70 is wrapped around cable 13 (not shown).
- the plug 76 is then held in place by spring clips 77 or a similar mechanism.
- the resulting enclosed area 80 should be of sufficient size to allow cable 13 to move freely within the area 80, while remaining small enough to prevent passage of the plug 12 (not shown).
- a similar locking mechanism can be used to attach tether 70 to the device 10 through hole 52 as shown in Figure 8, with the result that tether 70 has a locking mechanism 72 at both ends.
- tether 70 can be integrally formed as part of the device 10 during assembly, such that tether 70 only requires a locking mechanism at one end.
- shell 20 and base 21 are preferably formed by injection moulding in plastics or die cast metal, including metals such as aluminum and zinc (although this is not to preclude other suitable possibilities). Shell 20 and base 21 are subsequently mated with their respective end faces 24 and 26 abutting each other and permanently joined together by ultrasonic welding or a suitable adhesive, or in the case of a metal assembly, by means of threaded junction of the two parts, for example. 10026] Before mating of shell 20 and base 21, member 16 is placed in cavity 22 of shell 20, via opening 23. After shell 20 and base 21 are joined, member 16 is captive within cavity 22.
- Member 16 has an external surface 29, that conforms in shape with, and at this stage lies closely adjacent to, internal surface 25 of shell 20, so that member 16 is rotatable within cavity 22 about rotation axis 18.
- Member 16 has an end wall 30 that is perpendicular to axis 18.
- Member 16 is captive within cavity 22 of shell 20 because opening 14 is so proportioned that member 16 cannot be withdrawn therethrough.
- a partial collar 31 having a surface 33 that is a sector of a cylinder is formed in shell 20 at the end opposite base 21.
- member 16 is shaped and proportioned to lie between partial collar 31 and wall 32 of shell 20 at the end.
- surface 33 acts as a bearing surface for member 16.
- Partial collar 31 partly defines a notch 34 that is part of opening 14 and that, when member 16 is rotated to its closed position, becomes the cable opening 17.
- Lock mechanism 19 is of known type, having an outer cylinder casing 40 and barrel 41 rotatable therein. By operation of tumblers (not shown) in and extending transversely across barrel 41, barrel 41 is prevented from rotating within cylinder casing 40 except when a correct key (not shown) is inserted into barrel 41.
- tumblers not shown
- a shaped driver end 42 is secured to and rotatable with barrel 41 and engages with a co-operating opening in a formation 43 integrally formed in member 16, so that when barrel 41 cannot rotate, member 16 cannot rotate. This condition corresponds to the closed condition of device
- opening 14 is closed (save for cable opening 17) by member 16.
- driver end 42 is preferably star shaped, in order to distribute the torque from lock mechanism 19 evenly into formation 43.
- device 10 Many variations can be made to device 10 without departing from the spirit or scope of the invention.
- the egg-like shape of device 10 could be altered.
- device 10 is such as to compactly surround plug 12 and cable 13 and is attractive in appearance and economical of materials.
- the device 10 could of course be made in a range of shapes and sizes to accommodate different plug designs and cable sizes.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002600295A CA2600295A1 (en) | 2004-12-08 | 2005-12-06 | Electrical equipment lockout device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2004907013 | 2004-12-08 | ||
AU2004907013A AU2004907013A0 (en) | 2004-12-08 | Electrical equipment lockout device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006060907A1 true WO2006060907A1 (en) | 2006-06-15 |
Family
ID=36577634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CA2005/001852 WO2006060907A1 (en) | 2004-12-08 | 2005-12-06 | Electrical equipment lockout device |
Country Status (2)
Country | Link |
---|---|
CA (1) | CA2600295A1 (en) |
WO (1) | WO2006060907A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2643787A (en) * | 1950-11-24 | 1953-06-30 | Benjamin W Rockman | Lockable container for electrical connectors |
US4679873A (en) * | 1986-09-08 | 1987-07-14 | Brackett Jr John R | Electrical plug lock |
US5277599A (en) * | 1992-10-23 | 1994-01-11 | Nilson Donald L | Lockable container for securing an electrical connector |
-
2005
- 2005-12-06 CA CA002600295A patent/CA2600295A1/en not_active Abandoned
- 2005-12-06 WO PCT/CA2005/001852 patent/WO2006060907A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2643787A (en) * | 1950-11-24 | 1953-06-30 | Benjamin W Rockman | Lockable container for electrical connectors |
US4679873A (en) * | 1986-09-08 | 1987-07-14 | Brackett Jr John R | Electrical plug lock |
US5277599A (en) * | 1992-10-23 | 1994-01-11 | Nilson Donald L | Lockable container for securing an electrical connector |
Also Published As
Publication number | Publication date |
---|---|
CA2600295A1 (en) | 2006-06-15 |
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