WO1997034352A1 - A power take-off adapter for a track - Google Patents

A power take-off adapter for a track Download PDF

Info

Publication number
WO1997034352A1
WO1997034352A1 PCT/FI1997/000167 FI9700167W WO9734352A1 WO 1997034352 A1 WO1997034352 A1 WO 1997034352A1 FI 9700167 W FI9700167 W FI 9700167W WO 9734352 A1 WO9734352 A1 WO 9734352A1
Authority
WO
WIPO (PCT)
Prior art keywords
adapter
track
power take
selecting switch
contact
Prior art date
Application number
PCT/FI1997/000167
Other languages
French (fr)
Inventor
Risto Jaakkola
Original Assignee
Nordic Aluminium Oyj.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nordic Aluminium Oyj. filed Critical Nordic Aluminium Oyj.
Priority to DE19781635T priority Critical patent/DE19781635T1/en
Priority to GB9819060A priority patent/GB2325352B/en
Priority to AU19284/97A priority patent/AU1928497A/en
Publication of WO1997034352A1 publication Critical patent/WO1997034352A1/en

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
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/14—Rails or bus-bars constructed so that the counterparts can be connected thereto at any point along their length
    • H01R25/142—Their counterparts

Definitions

  • the invention relates to a power take-off adapter for a track comprising a longitudinal connection slot and longitudinal current conductors, the power take-off adapter having a box-like frame that comprises: a protruding switching member to be arranged in the connection slot of the conductor track; a first and a second axle member provided with locking and contact fingers for connecting the power take-off adapter arranged in the connection slot of the track mechanically to the track and electrically to the current conductors of the track; a switching means that is switched from a first position to a second position and from the second position to the first position to move the first and second axle member and thereby the locking fingers to a connecting position in which they protrude from the switching member and, respectively, to a retracted disconnecting position.
  • a drawback of the prior art is, for example, the complexity of the constructions, which raises the production costs.
  • the constructional complexity is, for example, due to the fact that in previously known power take-off adapters, after attaching the power take-off adapter, it has been selected mechanically which phase conductor the power take-off adapter is connected to, i.e. which contact finger moves to a connecting position and which remain in a disconnecting position. Due to the mechanical constructions, the number of components has increased, which has raised the production costs.
  • a further drawback is, for example, that when more lighting equipment is installed in a system or when the positions of the lighting devices are changed, some phase of the track system may be loaded too heavily while the other phases are loaded too lightly.
  • the object of the invention is to provide a power take-off adapter for a track, eliminating the drawbacks of the prior art. This is achieved with the power take-off adapter provided by the invention.
  • the power take-off adapter of the invention is characterized in that a rotary movement of the switching means is arranged to move all the contact fingers so that they come into contact with the current conductors of the track; and that the power take-off adapter is provided with a separate selecting switch, by which the power take ⁇ off adapter is electrically connected to the desired phase conductor or electrically disconnected from the phase conductor, so that the power take-off adapter can be attached to the track and detached from the track by a single movement of the switching means, while the phase selected by the selecting switch remains unchanged.
  • the phase conductor to be connected can be selected or changed before the power take-off adapter is attached to the track or after is has been attached to the track.
  • the primary advantage of the invention is that it simplifies the construction of the power take-off adapter and reduces the production costs as compared with the earlier solutions. The number of different components is minimised. Also, no spiral springs or other spring arrangements made of steel wire, which are difficult to handle in the assembly, are needed in the power take-off adapter.
  • a further advantage is that the power take-off adapter can be attached and detached by a single movement of a lever, and the phase selected will not change even though the power take-off adapter is attached to or detached from the track. During the selection of the phase, the power take ⁇ off adapter can be either attached to or detached from the track.
  • contact pressure is transmitted in the invention from a contact to the selecting switch, whereby the contact pressure of the free phase contacts can be low.
  • fig. 1 shows a general perspective view of a power take-off adapter of the invention attached to a track
  • fig. 2 shows a general perspective view of the power take-off adapter according to the invention
  • figs. 3 to 7 show views and sectional views of the power take-off adapter according to fig. 2 seen from different directions
  • figs. 8 to 10 show perspective sectional views of the power take-off adapter according to fig. 2.
  • a track is indicated generally by reference number 1.
  • the track 1 can be made, for example, from an aluminium profile.
  • Reference number 2 indicates a longitudinal connection slot of the track.
  • Reference number 3 indicates longitudinal current conductors, i.e. a neutral conductor and phase conductors, of the track.
  • Reference number 4 in the figures indicates a box-line frame of the power take-off adapter.
  • the box-like frame 4 of the power take-off adapter comprises a protruding switching member 5 to be arranged in the connection slot of the track 1.
  • the power take-off adapter further comprises a first and a second axle member 6,7.
  • the axle members appear clearly e.g. from fig. 6.
  • the axle members 6,7 are provided with locking fingers 8 and contact fingers 9.
  • the function of the locking fingers 8 is to connect the power take-off adapter mechanically to the track, whereas the function of the contact fingers 9 is to connect the power take-off adapter electrically to the current conductors 3 of the track.
  • the axle members 6,7 are controlled by a switching means 10.
  • the switching means 10 When the switching means 10 is switched from a first position to a second position, both axle members 6,7 rotate about their longitudinal axis, whereby the locking fingers 8 and contact fingers 9 arranged in the axle members 6,7 move from a retracted disconnecting position to a protruding connecting position.
  • the switching means 10 when the switching means 10 is switched from the second position to the first position, the locking fingers 8 and the contact fingers 9 move from the protruding connecting position to the retracted disconnecting position.
  • a simultaneous rotary movement of the axle members 6,7 is effected, for example, by means of suitable gear transmission as shown in the example illustrated in the figures.
  • Such a mechanical power trans ⁇ mission arrangement is commonly known in connection with power take-off adapters, so it will not be discussed in greater detail herein. With regard to the power transmission arrangement, reference is here made e.g. to Finnish Patent 92,635 mentioned above.
  • a rotary movement of the switching means 10 is arranged to move all the contact fingers 9 such that they come into contact with the current conductors of the track.
  • the power take-off adapter is also provided with a selecting switch 11 , by which the power take-off adapter can be electrically connected to the desired phase conductor or electrically disconnected from the phase conductor.
  • the power take-off adapter is mechanically connected to the track by a movement of the switching element 10 from a first position to a second position; in other words, the contact fingers come into contact with the neutral and phase conductors 3.
  • the movement of the switching means 10 can be, for example, a movement of about 90°, indicated in figs. 7 and 9 by an arrow. It is clear that when the switching means
  • the selecting switch 11 is switched, the locking means 8 move to a protruding position.
  • the electric connection is provided by a separate selecting switch 11.
  • the phase selected by the selecting switch 11 will not change even though the power take-off adapter is detached from the track 1 or attached to the track 1. This is significant when the load is to be divided evenly between the different phases.
  • the power take-off adapter can be detached from the track simply by switching the switching means 10 from the second position to the first position, whereby both the locking fingers 8 and the contact fingers 9 move to the retracted position.
  • the selecting switch 11 can thus here be held in the previously selected position, so that the phase will not change in connection with later reconnection.
  • the selecting switch 11 can be preferably arranged on the side of the box-like frame 4 so that it can be operated from both sides of the frame or from one side only.
  • the selecting switch can naturally also be designed so that it can be operated from the side of the frame that is facing downward when the power take-off adapter is attached to the track.
  • the selecting switch can also be designed so that it can be operated from every side of the frame.
  • the electric connection of the power take-off adapter according to the invention is, in principle, quite conventional, i.e. the contact fingers are connected in the desired manner to the phase and the neutral.
  • Protective grounding is provided by a contact 13 that is arranged to be in contact with a protective ground conductor arranged at the bottom of the connection slot 2 of the track 1.
  • the power take-off adapter of the invention or any of its details need not necessarily be exactly as shown in the figures but that other solutions are also possible.
  • the selecting switch for example, need not necessarily be a sliding clutch as shown in the figures. Another type of switch known per se can also be used as the selecting switch, if it is considered necessary.
  • the selecting switch can also be placed in any part of the frame whatsoever.
  • the shape of the power take-off adapter is not in any way restricted to the shape illustrated in the figures, but the box-like frame can be shaped quite freely according to the need.

Landscapes

  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Slide Switches (AREA)

Abstract

The invention relates to a power take-off adapter for a track (1) comprising a connection slot (2) and current conductors (3), the power take-off adapter having a box-like frame (4) that comprises: a protruding switching member (5); a first and a second axle member provided with locking and contact fingers for connecting th e power take-off adapter mechanically to the track (1) and electrically to the current conductors (3) of the track; a switching means (10) that is switched from a first position to a second position and from the second position to the first position to move the locking fingers to a connecting position in which they protrude from the switching member (5) and, respectively, to a retracted disconnecting position. To provide a simple construction, a rotary movement of the switching means (10) is arranged to move all the contact fingers so that they come into contact with the current conductors (3) of the track. The power take-off adapter is provided with a separate selecting switch (11), by which the power take-off adapter is electrically connected to the desired phase conductor (3) or electrically disconnected from the phase conductor (3).

Description

A POWER TAKE-OFF ADAPTER FOR A TRACK
The invention relates to a power take-off adapter for a track comprising a longitudinal connection slot and longitudinal current conductors, the power take-off adapter having a box-like frame that comprises: a protruding switching member to be arranged in the connection slot of the conductor track; a first and a second axle member provided with locking and contact fingers for connecting the power take-off adapter arranged in the connection slot of the track mechanically to the track and electrically to the current conductors of the track; a switching means that is switched from a first position to a second position and from the second position to the first position to move the first and second axle member and thereby the locking fingers to a connecting position in which they protrude from the switching member and, respectively, to a retracted disconnecting position.
Track systems of this type are today used commonly in various rooms for connecting lighting equipment, appliances and the like to a power source by means of a power take-off adapter. Various types of both power take¬ off adapters and tracks have been developed. As examples of the prior art are mentioned the solutions of Finnish Patents 84,305 and 92,635.
A drawback of the prior art is, for example, the complexity of the constructions, which raises the production costs. The constructional complexity is, for example, due to the fact that in previously known power take-off adapters, after attaching the power take-off adapter, it has been selected mechanically which phase conductor the power take-off adapter is connected to, i.e. which contact finger moves to a connecting position and which remain in a disconnecting position. Due to the mechanical constructions, the number of components has increased, which has raised the production costs. A further drawback is, for example, that when more lighting equipment is installed in a system or when the positions of the lighting devices are changed, some phase of the track system may be loaded too heavily while the other phases are loaded too lightly. The object of the invention is to provide a power take-off adapter for a track, eliminating the drawbacks of the prior art. This is achieved with the power take-off adapter provided by the invention. The power take-off adapter of the invention is characterized in that a rotary movement of the switching means is arranged to move all the contact fingers so that they come into contact with the current conductors of the track; and that the power take-off adapter is provided with a separate selecting switch, by which the power take¬ off adapter is electrically connected to the desired phase conductor or electrically disconnected from the phase conductor, so that the power take-off adapter can be attached to the track and detached from the track by a single movement of the switching means, while the phase selected by the selecting switch remains unchanged. The phase conductor to be connected can be selected or changed before the power take-off adapter is attached to the track or after is has been attached to the track. The primary advantage of the invention is that it simplifies the construction of the power take-off adapter and reduces the production costs as compared with the earlier solutions. The number of different components is minimised. Also, no spiral springs or other spring arrangements made of steel wire, which are difficult to handle in the assembly, are needed in the power take-off adapter. A further advantage is that the power take-off adapter can be attached and detached by a single movement of a lever, and the phase selected will not change even though the power take-off adapter is attached to or detached from the track. During the selection of the phase, the power take¬ off adapter can be either attached to or detached from the track. Yet another advantage is that contact pressure is transmitted in the invention from a contact to the selecting switch, whereby the contact pressure of the free phase contacts can be low.
In the following the invention will be described in greater detail by means of a preferred embodiment illustrated in the attached drawing, in which fig. 1 shows a general perspective view of a power take-off adapter of the invention attached to a track, fig. 2 shows a general perspective view of the power take-off adapter according to the invention, figs. 3 to 7 show views and sectional views of the power take-off adapter according to fig. 2 seen from different directions, and figs. 8 to 10 show perspective sectional views of the power take-off adapter according to fig. 2.
In the figures, a track is indicated generally by reference number 1.
The track 1 can be made, for example, from an aluminium profile. Reference number 2 indicates a longitudinal connection slot of the track. Reference number 3 indicates longitudinal current conductors, i.e. a neutral conductor and phase conductors, of the track.
Reference number 4 in the figures indicates a box-line frame of the power take-off adapter. The box-like frame 4 of the power take-off adapter comprises a protruding switching member 5 to be arranged in the connection slot of the track 1.
The power take-off adapter further comprises a first and a second axle member 6,7. The axle members appear clearly e.g. from fig. 6. The axle members 6,7 are provided with locking fingers 8 and contact fingers 9. The function of the locking fingers 8 is to connect the power take-off adapter mechanically to the track, whereas the function of the contact fingers 9 is to connect the power take-off adapter electrically to the current conductors 3 of the track.
The axle members 6,7 are controlled by a switching means 10. When the switching means 10 is switched from a first position to a second position, both axle members 6,7 rotate about their longitudinal axis, whereby the locking fingers 8 and contact fingers 9 arranged in the axle members 6,7 move from a retracted disconnecting position to a protruding connecting position. Correspondingly, when the switching means 10 is switched from the second position to the first position, the locking fingers 8 and the contact fingers 9 move from the protruding connecting position to the retracted disconnecting position. A simultaneous rotary movement of the axle members 6,7 is effected, for example, by means of suitable gear transmission as shown in the example illustrated in the figures. Such a mechanical power trans¬ mission arrangement is commonly known in connection with power take-off adapters, so it will not be discussed in greater detail herein. With regard to the power transmission arrangement, reference is here made e.g. to Finnish Patent 92,635 mentioned above.
It is an essential idea of the invention that a rotary movement of the switching means 10 is arranged to move all the contact fingers 9 such that they come into contact with the current conductors of the track. The power take-off adapter is also provided with a selecting switch 11 , by which the power take-off adapter can be electrically connected to the desired phase conductor or electrically disconnected from the phase conductor.
The idea of the invention is thus that the power take-off adapter is mechanically connected to the track by a movement of the switching element 10 from a first position to a second position; in other words, the contact fingers come into contact with the neutral and phase conductors 3. The movement of the switching means 10 can be, for example, a movement of about 90°, indicated in figs. 7 and 9 by an arrow. It is clear that when the switching means
10 is switched, the locking means 8 move to a protruding position. The electric connection is provided by a separate selecting switch 11. The selecting switch
11 can be, for example, a sliding clutch that is arranged to control contact strips 12 that effect the electric connection. It should be noted that the phase selected by the selecting switch 11 will not change even though the power take-off adapter is detached from the track 1 or attached to the track 1. This is significant when the load is to be divided evenly between the different phases. The power take-off adapter can be detached from the track simply by switching the switching means 10 from the second position to the first position, whereby both the locking fingers 8 and the contact fingers 9 move to the retracted position. The selecting switch 11 can thus here be held in the previously selected position, so that the phase will not change in connection with later reconnection. The selecting switch 11 can be preferably arranged on the side of the box-like frame 4 so that it can be operated from both sides of the frame or from one side only. The selecting switch can naturally also be designed so that it can be operated from the side of the frame that is facing downward when the power take-off adapter is attached to the track. The selecting switch can also be designed so that it can be operated from every side of the frame.
The electric connection of the power take-off adapter according to the invention is, in principle, quite conventional, i.e. the contact fingers are connected in the desired manner to the phase and the neutral. Protective grounding is provided by a contact 13 that is arranged to be in contact with a protective ground conductor arranged at the bottom of the connection slot 2 of the track 1.
The above embodiment is in no way intended to restrict the invention, but the invention can be varied quite freely within the scope of the claims. It is thus obvious that the power take-off adapter of the invention or any of its details need not necessarily be exactly as shown in the figures but that other solutions are also possible. The selecting switch, for example, need not necessarily be a sliding clutch as shown in the figures. Another type of switch known per se can also be used as the selecting switch, if it is considered necessary. The selecting switch can also be placed in any part of the frame whatsoever. Further, the shape of the power take-off adapter is not in any way restricted to the shape illustrated in the figures, but the box-like frame can be shaped quite freely according to the need.

Claims

1. A power take-off adapter for a track (1) comprising a longitudinal connection slot (2) and longitudinal current conductors (3), the power take-off adapter having a box-like frame (4) that comprises: a protruding switching member (5) to be arranged in the connection slot of the conductor track; a first and a second axle member (6,7) provided with locking and contact fingers (8,9) for connecting the power take-off adapter arranged in the connection slot (2) of the track mechanically to the track (1) and electrically to the current conductors (3) of the track; a switching means (10) that is switched from a first position to a second position and from the second position to the first position to move the first and second axle member (6,7) and thereby the locking fingers (8) to a connecting position in which they protrude from the switching member (5) and, respectively, to a retracted disconnecting position, c h a r a c t e r i z e d in that a rotary movement of the switching means (10) is arranged to move all the contact fingers (9) so that they come into contact with the current conductors (3) of the track (1); and that the power take-off adapter is provided with a separate selecting switch (11), by which the power take-off adapter is electrically connected to the desired phase conductor (3) or electrically disconnected from the phase conductor, so that the power take-off adapter can be attached to the track (1) and detached from the track (1) by a single movement of the switching means (10), while the phase selected by the selecting switch remains unchanged.
2. A power take-off adapter according to claim 1 , c h a r a c te r ¬ i z e d in that the desired phase can be selected or changed by the selecting switch (11 ) when the power take-off adapter is attached to the track (1) or detached from the track (1).
3. A power take-off adapter as claimed in claim 1 or 2, c h a r a c ¬ t e r i z e d in that the selecting switch (11) is a sliding clutch arranged to control contact strips (12) that effect the electric connection.
PCT/FI1997/000167 1996-03-13 1997-03-13 A power take-off adapter for a track WO1997034352A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19781635T DE19781635T1 (en) 1996-03-13 1997-03-13 Power take-off adapter for one rail
GB9819060A GB2325352B (en) 1996-03-13 1997-03-13 A power take-off adapter for a track
AU19284/97A AU1928497A (en) 1996-03-13 1997-03-13 A power take-off adapter for a track

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI961179 1996-03-13
FI961179A FI100370B (en) 1996-03-13 1996-03-13 Power outlet for a contact rail

Publications (1)

Publication Number Publication Date
WO1997034352A1 true WO1997034352A1 (en) 1997-09-18

Family

ID=8545649

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1997/000167 WO1997034352A1 (en) 1996-03-13 1997-03-13 A power take-off adapter for a track

Country Status (5)

Country Link
AU (1) AU1928497A (en)
DE (1) DE19781635T1 (en)
FI (1) FI100370B (en)
GB (1) GB2325352B (en)
WO (1) WO1997034352A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2908388A1 (en) * 2014-02-14 2015-08-19 Universal Electric Corporation Tool-less busway take-off device for electrical busway and method of installing
WO2016132362A1 (en) * 2015-02-17 2016-08-25 Chocolate Lighting Company Ltd Power contact assembly for a track lighting system
US9819183B2 (en) 2013-07-18 2017-11-14 Philips Lighting Holding B.V. Power distribution system
WO2023111401A1 (en) * 2021-12-16 2023-06-22 Propria Oy Adapter for contact rail, arrangement and method for connecting device to contact rail
EP4270682A1 (en) * 2022-04-29 2023-11-01 H4X e.U. Adapter for use in a rail light system, and lighting assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1571738A1 (en) * 2004-03-03 2005-09-07 Smart Di Martino Sandro Modular electric connection system
US10122161B2 (en) * 2015-06-17 2018-11-06 Busway Solutions, LLC Systems, methods, and apparatus useful for busway power distribution

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3718886A (en) * 1969-05-31 1973-02-27 Nokia Ab Finnish Cable Works O Connection plug for a current supply rail
GB2140983A (en) * 1983-04-28 1984-12-05 Profilux Srl A bi-polar adaptor for multi-polar armoured electric lines forming part of installations for the illumination of interiors
US4494808A (en) * 1981-12-17 1985-01-22 Harald Widell Electrical collector rail with connectable adapter
WO1994024731A1 (en) * 1993-04-16 1994-10-27 Nokia Alumiini Oy A power take-off adaptor for a conductor rail

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3718886A (en) * 1969-05-31 1973-02-27 Nokia Ab Finnish Cable Works O Connection plug for a current supply rail
US4494808A (en) * 1981-12-17 1985-01-22 Harald Widell Electrical collector rail with connectable adapter
GB2140983A (en) * 1983-04-28 1984-12-05 Profilux Srl A bi-polar adaptor for multi-polar armoured electric lines forming part of installations for the illumination of interiors
WO1994024731A1 (en) * 1993-04-16 1994-10-27 Nokia Alumiini Oy A power take-off adaptor for a conductor rail

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9819183B2 (en) 2013-07-18 2017-11-14 Philips Lighting Holding B.V. Power distribution system
EP2908388A1 (en) * 2014-02-14 2015-08-19 Universal Electric Corporation Tool-less busway take-off device for electrical busway and method of installing
US9379502B2 (en) 2014-02-14 2016-06-28 Universal Electric Corporation Tool-less busway take-off device for electrical busway and method of installing
WO2016132362A1 (en) * 2015-02-17 2016-08-25 Chocolate Lighting Company Ltd Power contact assembly for a track lighting system
US9989228B2 (en) 2015-02-17 2018-06-05 Chocolate Lighting Company Ltd Track lighting system
US10161609B2 (en) 2015-02-17 2018-12-25 Chocolate Lighting Company Ltd Track lighting system
US10845043B2 (en) 2015-02-17 2020-11-24 Chocolate Lighting Company Ltd Track lighting system
WO2023111401A1 (en) * 2021-12-16 2023-06-22 Propria Oy Adapter for contact rail, arrangement and method for connecting device to contact rail
EP4270682A1 (en) * 2022-04-29 2023-11-01 H4X e.U. Adapter for use in a rail light system, and lighting assembly
AT526097A3 (en) * 2022-04-29 2024-03-15 H4X Eu Adapter for use in a track lighting system and lighting arrangement

Also Published As

Publication number Publication date
FI100370B (en) 1997-11-14
FI961179A0 (en) 1996-03-13
GB2325352A (en) 1998-11-18
GB2325352B (en) 2000-05-17
AU1928497A (en) 1997-10-01
FI961179A (en) 1997-09-14
GB9819060D0 (en) 1998-10-28
DE19781635T1 (en) 1999-07-08

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