EP1833066A1 - A spring-force clamp connector, a low-voltage switching device, a system comprising low-voltage switching devices, and a method for electrically connecting low-voltage switching devices to each other - Google Patents

A spring-force clamp connector, a low-voltage switching device, a system comprising low-voltage switching devices, and a method for electrically connecting low-voltage switching devices to each other Download PDF

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Publication number
EP1833066A1
EP1833066A1 EP06004567A EP06004567A EP1833066A1 EP 1833066 A1 EP1833066 A1 EP 1833066A1 EP 06004567 A EP06004567 A EP 06004567A EP 06004567 A EP06004567 A EP 06004567A EP 1833066 A1 EP1833066 A1 EP 1833066A1
Authority
EP
European Patent Office
Prior art keywords
low
voltage switching
spring
switching device
holder
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.)
Withdrawn
Application number
EP06004567A
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German (de)
French (fr)
Inventor
Frank Rümpler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP06004567A priority Critical patent/EP1833066A1/en
Publication of EP1833066A1 publication Critical patent/EP1833066A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5844—Electric connections to or between contacts; Terminals making use of wire-gripping clips or springs
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48455—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar insertion of a wire only possible by pressing on the spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/2458—Electrical interconnections between terminal blocks

Definitions

  • the invention relates to spring-force clamp connectors, to low-voltage switching devices and to methods for electrically connecting low-voltage switching devices to each other.
  • EP 1 026 782 A1 discloses a connection block for switching devices which can be used to provide a link between sockets on two adjacent appliances.
  • the connection assembly comprises two items of electrical apparatus placed side by side, with sockets formed in adjacent positions on the same sides of the items.
  • a connector plug with an insulating body and terminal pins is engaged in the tool opening of a spring-force clamp connector.
  • connection block comprising the first electrical conductor would effectively block the opening of the second electrical conductor, hereby making the simultaneous connection of the clamp to two different electrical conductors more difficult.
  • the leaf spring comprising at its respective upper part a cut-out region having a side which is adapted to clamp an electrical conductor that is pressed through said cut-out region between said side and a counterpart wall of said holder, comprises a cut-out region, and that said leaf spring is further adapted to clamp a further electrical conductor that is pressed through said cut-out-region between said leaf spring and said counterpart wall
  • the spring-force clamp connector can be used to clamp two electrical conductors, one of which is being brought to the spring-force clamp connector from above, the other being brought to the spring-force clamp connector from below.
  • a second objective of the invention is to bring out a low-voltage switching device that can be connected electrically to another low-voltage switching device or to a link module while enabling connecting to a further electrical conductor.
  • This objective can be achieved with a low-voltage switching device according to claim 7, namely, by providing in the low-voltage switching device a plurality of spring-force clamp connectors according to any of claims 1 to 6 connected to switch contacts of said low-voltage switching device.
  • a third objective of the invention is to bring out a new method for electrically connecting low-voltage switching devices to each other.
  • This method can be achieved as set out in claim 10, namely by pushing a first low-voltage switching device according to any one of claims 7 to 9 to a second low-voltage switching device according to claim 9 so deep that the spring-force clamp connectors of the first low-voltage switching device clamp the plurality of male connectors that are connected to switch contacts of said second low-voltage switching device.
  • the cut-out-region in the holder is located next to said counterpart wall, it may be easier for the leaf spring to clamp the further electrical conductor. If the cut-out-region of the holder is located at a respective lower part of said holder, the upper part of the leaf spring can be better used for clamping the electrical conductor.
  • the cut-out-region of the holder is preferably centrally located in the holder, since in this manner the edges of the cut-out region may be used to improve the mechanical or electrical contact between the spring-force clamp connector and the electrical conductor.
  • a low-voltage switching device comprises a housing comprising a plurality of openings in a respective lower part of said housing and leading to a spring-force clamp connector
  • the low-voltage switching device can be connected to an existing wiring, or it may become easier to connect the low-voltage switching device to another low-voltage switching device, especially if the low-voltage switching device comprises a housing and a plurality of male connectors connected to switch contacts of said low-voltage switching device, the male connectors sticking out of said housing.
  • Figure 3 shows a spring-force clamp connector 20 comprising a leaf spring 28 and a holder 29.
  • the leaf spring 28 comprises at its respective upper part a cut-out region 26 having a side 25 which is adapted to clamp an electrical conductor that is pressed through said cut-out region 26 between the side 25 and a counterpart wall 33 of the holder 29.
  • the cut-out region may be lined with the further sides 31, 32 formed by the leaf spring 28.
  • the leaf spring 28 has preferably a shape comprising a loop but other shapes are possible as well.
  • the holder 29 comprises a cut-out region 27, and that said leaf spring 28 is further adapted to clamp a further electrical conductor that is pressed through said cut-out-region 27 between the leaf spring and the counterpart wall 33. If the leaf spring 28 has a shape forming a loop, the clamping may be carried out by clamping the further electrical conductor between the loop and the counterpart wall 33.
  • the cut-out-region 27 may be located next to said counterpart wall 33, preferably so that clearance d enables an electrical conductor having a required width to enter the space between the leaf spring 28 and the counterpart wall 33, turn the leaf spring 28 slightly to side 28 and thus cause the clamping of the electrical conductor between the leaf spring 28 and the counterpart wall 33.
  • the cut-out-region 27 is preferably located at a respective lower part of said holder 29.
  • the cut-out-region 27 may be located centrally in said holder 29, so that the side walls 41, 42 (not shown) of the cut-out region 27 may provide supplementary support for the electrical conductor that enters into the cut-out-region 27.
  • the counterpart wall 33 preferably consists of metal; the simplest construction can be obtained if the whole spring-force clamp connector 20 consists of metal.
  • the spring-force clamp connector can in a particular advantageous manner be obtained by modifying a Cage Clamp® (Registered Trade Mark of WAGO Kunststofftechnik GmbH & Co. KG) by adding the cut-out region to the bottom of the holder of the leaf spring.
  • Figure 1 illustrates a system comprising three low-voltage switching devices 11, 12, 14 to which a fourth low-voltage switching device 13 is about to be connected.
  • Figure 2 illustrates the same system after the fourth low-voltage switching device 13 has been connected.
  • a low-voltage switching device is a device that can be used to switch currents in voltages up to 1000 Volts, and also devices that can be used to connect two low-voltage switching devices to each other or to the current supply.
  • Each low-voltage switching device 11, 12, 13, 14 comprises a plurality of spring-force clamp connectors 20 according to any of the preceding claims connected to corresponding switch contacts, and optionally to control inputs too.
  • the low-voltage switching device 11, 12, 13, 14 may further comprise a housing 10 comprising a plurality of openings 40 in a respective lower part of said housing 10 and leading to a corresponding spring-force clamp connector 20.
  • the low-voltage switching devices 11, 12, 13, 14 may be connected to each other by means of link modules that comprise male conductors at both of their respective ends. Alternatively, the low-voltage switching devices 11, 12, 13, 14 may be connected to each other if in the housing 10 of at least one of the low-voltage switching devices 12, 14 there is a plurality of male connectors 17 provided that are connected to responsive switch contacts of said low-voltage switching device 12, 14, so that the male connectors 17 stick out of said housing 10.
  • the electrical connection between a first low-voltage switching device 13 and a second low-voltage switching device 12, 14 can thus be carried out by said spring-force clamp connectors 20 and said male connectors 17, by pushing a first low-voltage switching device 13 to a second low-voltage switching device 12 for so long that the spring-force clamp connectors 20 of the first low-voltage switching device 13 clamp the plurality of male connectors 17 connected to responsive switch contacts of said second low-voltage switching device 12.
  • the low-voltage switching devices 12, 13 partly overlap each other.
  • the first low-voltage switching device 13 is preferably pushed downwards, or towards a switchgear cabinet wall, if a wall mounting is desired. In this manner, the wiring in the switchgear cabinet can be prepared in advance, the male connectors sticking out of the wall, so that the low-voltage switching devices may be just plugged into the male connectors.

Abstract

A spring-force clamp connector (20) comprises a leaf spring (28) and a holder (29), the leaf spring (28) comprising at its respective upper part a cut-out region (26) having a side (25) which is adapted to clamp an electrical conductor that is pressed through said cut-out region (26) between said side (25) and a counterpart wall (33) of said holder (29). The holder (29) comprises a cut-out region (27) and the leaf spring (28) is adapted to clamp a further electrical conductor (17) that is pressed through said cut-out-region (27) between said leaf spring (28) and said counterpart wall (33). Independent claims for a low-voltage switching device and for a method for electrically connecting low-voltage switching devices.

Description

    Field of the invention
  • The invention relates to spring-force clamp connectors, to low-voltage switching devices and to methods for electrically connecting low-voltage switching devices to each other.
    • Background art
  • EP 1 026 782 A1 discloses a connection block for switching devices which can be used to provide a link between sockets on two adjacent appliances. The connection assembly comprises two items of electrical apparatus placed side by side, with sockets formed in adjacent positions on the same sides of the items. A connector plug with an insulating body and terminal pins is engaged in the tool opening of a spring-force clamp connector.
  • This kind of solution makes it more difficult to connect a second electrical conductor to the connection socket when one electrical conductor has already been connected to the same spring-force clamp connector, since the first electrical conductor would jam the tool opening and thus prevent the clamp from clamping the second electrical conductor. Furthermore, the connection block comprising the first electrical conductor would effectively block the opening of the second electrical conductor, hereby making the simultaneous connection of the clamp to two different electrical conductors more difficult.
    • Summary of the invention
  • It is a first objective of the invention to bring out a spring-force clamp connector by using which it is easier to have a simultaneous connection to both a first and a second electrical conductor. This objective can be met with a spring-force clamp connector as set out in claim 1.
  • If the holder of a spring-force clamp connector that comprises a leaf spring and a holder, the leaf spring comprising at its respective upper part a cut-out region having a side which is adapted to clamp an electrical conductor that is pressed through said cut-out region between said side and a counterpart wall of said holder, comprises a cut-out region, and that said leaf spring is further adapted to clamp a further electrical conductor that is pressed through said cut-out-region between said leaf spring and said counterpart wall, the spring-force clamp connector can be used to clamp two electrical conductors, one of which is being brought to the spring-force clamp connector from above, the other being brought to the spring-force clamp connector from below.
  • A second objective of the invention is to bring out a low-voltage switching device that can be connected electrically to another low-voltage switching device or to a link module while enabling connecting to a further electrical conductor. This objective can be achieved with a low-voltage switching device according to claim 7, namely, by providing in the low-voltage switching device a plurality of spring-force clamp connectors according to any of claims 1 to 6 connected to switch contacts of said low-voltage switching device.
  • A third objective of the invention is to bring out a new method for electrically connecting low-voltage switching devices to each other. This method can be achieved as set out in claim 10, namely by pushing a first low-voltage switching device according to any one of claims 7 to 9 to a second low-voltage switching device according to claim 9 so deep that the spring-force clamp connectors of the first low-voltage switching device clamp the plurality of male connectors that are connected to switch contacts of said second low-voltage switching device.
  • Dependent claims describe various advantageous aspects of the invention.
    • Advantages of the invention
  • If the cut-out-region in the holder is located next to said counterpart wall, it may be easier for the leaf spring to clamp the further electrical conductor. If the cut-out-region of the holder is located at a respective lower part of said holder, the upper part of the leaf spring can be better used for clamping the electrical conductor.
  • The cut-out-region of the holder is preferably centrally located in the holder, since in this manner the edges of the cut-out region may be used to improve the mechanical or electrical contact between the spring-force clamp connector and the electrical conductor.
  • If a low-voltage switching device comprises a housing comprising a plurality of openings in a respective lower part of said housing and leading to a spring-force clamp connector, the low-voltage switching device can be connected to an existing wiring, or it may become easier to connect the low-voltage switching device to another low-voltage switching device, especially if the low-voltage switching device comprises a housing and a plurality of male connectors connected to switch contacts of said low-voltage switching device, the male connectors sticking out of said housing.
    • List of drawings
  • In the following, advantageous embodiments of the invention are discussed in more detail with reference to Figures 1 to 3 in the accompanying drawings, of which:
    • Figure 1 illustrates a system comprising three low-voltage switching devices to which a fourth low-voltage switching device is about to be connected;
    • Figure 2 illustrates the same system after the fourth low-voltage switching device has been connected; and
    • Figure 3 shows a spring-force clamp connector according to the first objective of the invention.
  • Same reference numerals refer to similar structural elements throughout the Figures.
    • Detailed description
  • Figure 3 shows a spring-force clamp connector 20 comprising a leaf spring 28 and a holder 29. The leaf spring 28 comprises at its respective upper part a cut-out region 26 having a side 25 which is adapted to clamp an electrical conductor that is pressed through said cut-out region 26 between the side 25 and a counterpart wall 33 of the holder 29. The cut-out region may be lined with the further sides 31, 32 formed by the leaf spring 28. The leaf spring 28 has preferably a shape comprising a loop but other shapes are possible as well.
  • The holder 29 comprises a cut-out region 27, and that said leaf spring 28 is further adapted to clamp a further electrical conductor that is pressed through said cut-out-region 27 between the leaf spring and the counterpart wall 33. If the leaf spring 28 has a shape forming a loop, the clamping may be carried out by clamping the further electrical conductor between the loop and the counterpart wall 33.
  • The cut-out-region 27 may be located next to said counterpart wall 33, preferably so that clearance d enables an electrical conductor having a required width to enter the space between the leaf spring 28 and the counterpart wall 33, turn the leaf spring 28 slightly to side 28 and thus cause the clamping of the electrical conductor between the leaf spring 28 and the counterpart wall 33.
  • The cut-out-region 27 is preferably located at a respective lower part of said holder 29.
  • In particular, the cut-out-region 27 may be located centrally in said holder 29, so that the side walls 41, 42 (not shown) of the cut-out region 27 may provide supplementary support for the electrical conductor that enters into the cut-out-region 27.
  • The counterpart wall 33 preferably consists of metal; the simplest construction can be obtained if the whole spring-force clamp connector 20 consists of metal.
  • The spring-force clamp connector can in a particular advantageous manner be obtained by modifying a Cage Clamp® (Registered Trade Mark of WAGO Kontakttechnik GmbH & Co. KG) by adding the cut-out region to the bottom of the holder of the leaf spring.
  • Figure 1 illustrates a system comprising three low- voltage switching devices 11, 12, 14 to which a fourth low-voltage switching device 13 is about to be connected. Figure 2 illustrates the same system after the fourth low-voltage switching device 13 has been connected.
  • A low-voltage switching device is a device that can be used to switch currents in voltages up to 1000 Volts, and also devices that can be used to connect two low-voltage switching devices to each other or to the current supply.
  • Each low- voltage switching device 11, 12, 13, 14 comprises a plurality of spring-force clamp connectors 20 according to any of the preceding claims connected to corresponding switch contacts, and optionally to control inputs too.
  • The low- voltage switching device 11, 12, 13, 14 may further comprise a housing 10 comprising a plurality of openings 40 in a respective lower part of said housing 10 and leading to a corresponding spring-force clamp connector 20.
  • The low- voltage switching devices 11, 12, 13, 14 may be connected to each other by means of link modules that comprise male conductors at both of their respective ends. Alternatively, the low- voltage switching devices 11, 12, 13, 14 may be connected to each other if in the housing 10 of at least one of the low- voltage switching devices 12, 14 there is a plurality of male connectors 17 provided that are connected to responsive switch contacts of said low- voltage switching device 12, 14, so that the male connectors 17 stick out of said housing 10.
  • The electrical connection between a first low-voltage switching device 13 and a second low- voltage switching device 12, 14 can thus be carried out by said spring-force clamp connectors 20 and said male connectors 17, by pushing a first low-voltage switching device 13 to a second low-voltage switching device 12 for so long that the spring-force clamp connectors 20 of the first low-voltage switching device 13 clamp the plurality of male connectors 17 connected to responsive switch contacts of said second low-voltage switching device 12. Finally, the low- voltage switching devices 12, 13 partly overlap each other.
  • The first low-voltage switching device 13 is preferably pushed downwards, or towards a switchgear cabinet wall, if a wall mounting is desired. In this manner, the wiring in the switchgear cabinet can be prepared in advance, the male connectors sticking out of the wall, so that the low-voltage switching devices may be just plugged into the male connectors.

Claims (12)

  1. A spring-force clamp connector (20) comprising a leaf spring (28) and a holder (29), the leaf spring (28) comprising at its respective upper part a cut-out region (26) having a side (25) which is adapted to clamp an electrical conductor that is pressed through said cut-out region (26) between said side (25) and a counterpart wall (33) of said holder (29), characterized in that: said holder (29) comprises a cut-out region (27), and that said leaf spring (28) is further adapted to clamp a further electrical conductor (17) that is pressed through said cut-out-region (27) between said leaf spring (28) and said counterpart wall (33).
  2. A spring-force clamp connector (20) according to claim 1, wherein: said cut-out-region (27) of said holder (29) is located next to said counterpart wall (33).
  3. A spring-force clamp connector (20) according to claim 2, wherein: said cut-out-region (27) of the holder (29) is located at a respective lower part of said holder (29).
  4. A spring-force clamp connector (20) according to claim 2 or 3, wherein: said cut-out-region (27) of said holder (29) is located centrally in said holder (29).
  5. A spring-force clamp connector (20) according to any one of the preceding claims, wherein: said counterpart wall (33) consists of metal.
  6. A spring-force clamp connector (20) according to any one of the preceding claims, wherein: said leaf spring (28) has a shape forming a loop, and wherein: said leaf spring (28) is further adapted to clamp a further electrical conductor (17) that is pressed through said cut-out-region (27) of the holder (29) between said loop and said counterpart wall (33) of said holder (29).
  7. A low-voltage switching device (11, 12, 13, 14), comprising: a housing (10); and a plurality of spring-force clamp connectors (20) according to any of the preceding claims, the spring-force clamp connectors (20) being in said housing (10) and electrically connected to switch contacts of said low-voltage switching device (11, 12, 13).
  8. A low-voltage switching device (11, 12, 13, 14) according to claim 7, wherein: said housing (10) comprises a plurality of openings (40) in a respective lower part of said housing (10), each of said openings (40) leading to a spring-force clamp connector (20).
  9. A low-voltage switching device (12, 14) according to claim 7 or 8, further comprising: a plurality of male connectors (17) connected to switch contacts of said low-voltage switching device (12, 14), the male connectors (17) sticking out of said housing (10).
  10. A system comprising low-voltage switching devices (11, 12, 13, 14) wherein: the electrical connection between a first low-voltage switching device (13) according to any one of claims 7 to 9 and a second low-voltage switching device (12, 14) according to claim 9 is carried out by said spring-force clamp connectors (20) and said male connectors (17), and wherein said low-voltage switching devices (12, 13, 14) are placed to partly overlap with each other.
  11. A method for electrically connecting low-voltage switching devices (11, 12, 13, 14) to each other, comprising the step of:
    pushing a first low-voltage switching device (32) according to any one of claims 7 to 9 to a second low-voltage switching device (12) according to claim 9 for so long that the spring-force clamp connectors (20) of the first low-voltage switching device (13) clamp the plurality of male connectors (17) connected to switch contacts of said second low-voltage switching device (12).
  12. A method according to claim 11, wherein: said pushing is performed downwards, or towards a switchgear cabinet wall.
EP06004567A 2006-03-07 2006-03-07 A spring-force clamp connector, a low-voltage switching device, a system comprising low-voltage switching devices, and a method for electrically connecting low-voltage switching devices to each other Withdrawn EP1833066A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06004567A EP1833066A1 (en) 2006-03-07 2006-03-07 A spring-force clamp connector, a low-voltage switching device, a system comprising low-voltage switching devices, and a method for electrically connecting low-voltage switching devices to each other

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06004567A EP1833066A1 (en) 2006-03-07 2006-03-07 A spring-force clamp connector, a low-voltage switching device, a system comprising low-voltage switching devices, and a method for electrically connecting low-voltage switching devices to each other

Publications (1)

Publication Number Publication Date
EP1833066A1 true EP1833066A1 (en) 2007-09-12

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EP06004567A Withdrawn EP1833066A1 (en) 2006-03-07 2006-03-07 A spring-force clamp connector, a low-voltage switching device, a system comprising low-voltage switching devices, and a method for electrically connecting low-voltage switching devices to each other

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012084407A1 (en) 2010-12-22 2012-06-28 Beckhoff Automation Gmbh Connection module and connection module system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7832646U1 (en) * 1978-11-03 1979-02-15 Hartmann & Braun Ag, 6000 Frankfurt Electrical connector
US4768981A (en) * 1985-04-16 1988-09-06 Wago Verwaltungsgesellschaft Mbh Connecting clamp for electrical conductors
EP1022808A2 (en) * 1999-01-22 2000-07-26 Wago Verwaltungsgesellschaft mbH Connecting terminal
EP1026782A1 (en) 1999-02-05 2000-08-09 Schneider Electric Industries SA Connection block for electrical devices
US6126494A (en) * 1997-11-29 2000-10-03 Karl Lumberg Gmbh & Co. Electrical connector for a printed-circuit board

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7832646U1 (en) * 1978-11-03 1979-02-15 Hartmann & Braun Ag, 6000 Frankfurt Electrical connector
US4768981A (en) * 1985-04-16 1988-09-06 Wago Verwaltungsgesellschaft Mbh Connecting clamp for electrical conductors
US6126494A (en) * 1997-11-29 2000-10-03 Karl Lumberg Gmbh & Co. Electrical connector for a printed-circuit board
EP1022808A2 (en) * 1999-01-22 2000-07-26 Wago Verwaltungsgesellschaft mbH Connecting terminal
EP1026782A1 (en) 1999-02-05 2000-08-09 Schneider Electric Industries SA Connection block for electrical devices

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"SCHRAUBENLOS UND MISCHBAR", ELEKTROTECHNIK, VOGEL VERLAG K.G. WURZBURG, DE, vol. 75, no. 12, 17 December 1993 (1993-12-17), pages 40 - 41, XP000424452, ISSN: 1431-9578 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012084407A1 (en) 2010-12-22 2012-06-28 Beckhoff Automation Gmbh Connection module and connection module system
CN103329357A (en) * 2010-12-22 2013-09-25 德商倍福自动化有限公司 Connection module and connection module system
US9209552B2 (en) 2010-12-22 2015-12-08 Beckhoff Automation Gmbh Connection module and connection module system
CN103329357B (en) * 2010-12-22 2016-05-25 德商倍福自动化有限公司 Link block and link block system

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