WO2004070885A1 - Dispositif de raccordement par serrage servant a raccorder une cosse annulaire et appareil electrique associe - Google Patents

Dispositif de raccordement par serrage servant a raccorder une cosse annulaire et appareil electrique associe Download PDF

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Publication number
WO2004070885A1
WO2004070885A1 PCT/EP2004/000570 EP2004000570W WO2004070885A1 WO 2004070885 A1 WO2004070885 A1 WO 2004070885A1 EP 2004000570 W EP2004000570 W EP 2004000570W WO 2004070885 A1 WO2004070885 A1 WO 2004070885A1
Authority
WO
WIPO (PCT)
Prior art keywords
clamping screw
terminal device
housing
clamping
screw
Prior art date
Application number
PCT/EP2004/000570
Other languages
German (de)
English (en)
Inventor
Willy Sabisch
Original Assignee
Siemens Aktiegesellschaft
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 Aktiegesellschaft filed Critical Siemens Aktiegesellschaft
Priority to JP2006501592A priority Critical patent/JP2006516800A/ja
Priority to EP04704564A priority patent/EP1590860A1/fr
Publication of WO2004070885A1 publication Critical patent/WO2004070885A1/fr

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
    • 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
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/34—Conductive members located under head of screw
    • 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
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/301—Clamped connections, spring connections utilising a screw or nut clamping member having means for preventing complete unscrewing of screw or nut
    • 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
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/305—Clamped connections, spring connections utilising a screw or nut clamping member having means for facilitating engagement of conductive member or for holding it in position

Definitions

  • the invention relates to a connection terminal device for an electrical device, in particular for connecting an electrical conductor closed by a ring cable lug, with a connection piece fixed in place on a housing, the connection piece being provided with a threaded bore which is provided with a captive clamping screw for producing a Klem contacting an electrical conductor interacts.
  • the invention further relates to an electrical device equipped with such a connection device.
  • Screw terminals are widely used as terminal devices in electrical connection technology for contacting electrical conductors on electrical devices.
  • a cable lug In order to avoid unraveling of the conductor end when using a flexible conductor, in particular a stranded wire, and thus to ensure a good and fail-safe contact between the conductor and the device, it is common to first terminate the conductor end with a so-called cable lug. The cable lug is then in turn clamp-contacted in the connection terminal device of the device.
  • a common form of a cable lug is a so-called ring cable lug. This carries at its free end a ring-shaped end piece with a screw opening. This end piece is screwed to the connection clamping device by placing it under the clamping screw in the manner of a washer.
  • a ring cable lug is advantageous insofar as an accidental loss of contact between the conductor and the clamping device is practically excluded, even when the clamping screw is loose, as a result of the end piece surrounding the clamping screw in a ring-like manner.
  • the clamping screw In order to be able to clamp a ring cable lug on the connection clamping device, the clamping screw must necessarily be completely unscrewed from the corresponding threaded bore of the connection piece. In a conventional connection clamping device, however, the clamping screw is only held on the threaded bore. After unscrewing the clamping screw, it is loose.
  • the connection of the ring cable lug is connected with a comparatively complex handling.
  • connection terminal device Simple handling of the connection terminal device is particularly desirable when the connection terminal device is difficult to access due to the limited space available in a device. Under these circumstances, there is usually also an increased risk that the clamping screw will fall when unscrewed and sometimes remain unreachable and unreachable.
  • connection clamping devices are known in which the clamping screw is held captively in its open position, ie in the state in which it is completely unscrewed from the threaded bore of the connection piece.
  • these solutions are only comparatively complex to implement. As a result, they are correspondingly expensive.
  • a connection clamping device is known, in which an elastic part is provided which holds the clamping screw in its open position, the clamping screw overcoming an elastic force from the open position in the closed position is movable.
  • a holding element rotatably holding the clamping screw is provided here, which is fastened in at least two positions, ie the opening position of the clamping screw and its closed position.
  • an L-shaped washer is provided, which on the one hand rotatably holds the clamping screw and on the other hand is slidably guided on a housing. By moving the washer within the housing, the clamping screw attached to it is in its open position the closed position can be moved.
  • the clamping screw attached to it in its open position the closed position can be moved.
  • connection clamping device known from DE 695 13 571 T2 (German translation of EP 688 063 B1)
  • the clamping screw has an external thread both in its shaft area and in its head area.
  • the thread of the screw shaft corresponds in a known manner to the threaded bore of the connector, while the thread of the screw head corresponds to the internal thread of a housing bore.
  • the threaded bore of the connection piece and the housing bore are oriented to one another in such a way that when the clamping screw is unscrewed, the external thread attached to the screw head engages in the thread of the housing bore before the clamping screw is completely unscrewed from the threaded bore of the connection piece.
  • the open position of the clamping screw i.e.
  • the double thread guide of the last-mentioned known solution is again comparatively complex, especially since the two internal threads of the threaded bore on the one hand and the housing bore on the other hand must be positioned very precisely to one another in order to avoid an unfavorable material tension.
  • the handling of the known device is comparatively complicated, especially since the clamping screw has to be driven all the way between its closed position and its open position by means of a screw movement that is comparatively complex in terms of handling.
  • the invention is based on the object of specifying a connecting terminal device which is particularly suitable for connecting a ring cable lug, which is of particularly simple construction and enables simple handling with regard to connecting and disconnecting an electrical conductor.
  • the clamping screw comprises an elongated, cylindrical guide head which is guided in a housing bore without play, in particular in a form-fitting manner, and is displaceable in the axial direction of the clamping screw.
  • the cylindrical guide head which lies in the housing bore which is necessarily coaxially arranged for the threaded bore of the connecting piece, ensures that the clamp screw is always centered with respect to the threaded bore, regardless of the position of the clamping screw.
  • the term elongated is understood to mean that the axial height of the guide head corresponds at least approximately to its diameter, but preferably exceeds it significantly, so that tilting of the clamping screw in the threaded bore or the housing bore is practically impossible. Due to the play-free mounting of the clamping screw in the housing bore, loss protection of the clamping screw is achieved in a particularly simple manner.
  • the guide head on the one hand and the housing bore on the other hand are preferably dimensioned such that the clamping screw can only be displaced within the housing bore by overcoming an actuating pressure to be applied by means of an actuating tool.
  • the guide head forms a frictional connection with the housing bore, the holding force of which is sufficient to prevent the clamping screw from automatically slipping under the effect of gravity or vibrations.
  • the frictional engagement is so weak that simple displacement of the clamping screw by means of an actuating tool, for example a screwdriver, is possible.
  • a stop is preferably provided which prevents the clamping screw from being displaced beyond its open position.
  • This stop can be realized both by a projection of the clamping screw and by a shape of the housing that engages in the housing bore.
  • Such a clamping element is usually provided anyway with a clamping screw.
  • the free end of the shaft of the clamping screw is preferably provided with a threadless insertion piece.
  • the housing expediently has a positioning contour for a ring cable lug.
  • This positioning contour comprises at least one rear guide wall, on which the ring cable lug attaches in this way when it is inserted into the connecting terminal device. strikes that its screw opening overlaps with the threaded hole of the connector.
  • the positioning contour also has side walls which cause the screw opening of the ring cable lug to be laterally centered with respect to the threaded bore.
  • the housing of the connection terminal device is in this case, in particular, integral with the housing of the device.
  • connection terminal device makes it possible, in particular, to easily contact the device with electrical leads, even in tight spaces.
  • the integration of the connection terminal device according to the invention in the device makes it possible to manufacture the device particularly inexpensively.
  • FIG. 1 shows a terminal device 1, which is integrated in the housing 2 of an electrical device 3, which is only indicated.
  • the device 3 is, for example, an electrical circuit breaker.
  • the terminal device 1 comprises a plate-shaped or rod-shaped connector 4, which is provided with a threaded bore 5 and is fixed in place on the housing 2.
  • the threaded bore 5 corresponds to the shaft 6 of a clamping screw 7.
  • the clamping screw 7 further comprises a cylindrical, elongated guide head 8 which lies in a housing bore 9 without play.
  • the housing bore 9, the threaded bore 5 and the clamping screw 7 are aligned coaxially with respect to a common screw axis 10.
  • the housing bore 9 and the threaded bore 5 are axially spaced apart from one another and are separated from a housing opening which serves as an insertion slot 11 for an electrical conductor 12.
  • a threadless neck region 14 is formed between the guide head 8 and the part of the shaft 6 carrying an external thread 13.
  • the neck area 14 carries e.g. Clamping element 15 designed as a roof disk, washer or spring washer, which is rotatably but captively attached to the neck area 14.
  • the shaft 6 On the free end, the shaft 6 carries a threadless insertion piece 16.
  • the electrical conductor 12 comprises a preferably flexible power cable 17 consisting of several individual strands, which is terminated at the end with a ring cable lug 18.
  • the ring cable lug 18 is crimped to the power cable 17 with a crimp region 19 facing the power cable 17.
  • the ring cable lug 18 On the free end, the ring cable lug 18 carries a flat clamping web 20 into which a screw opening 21 is made.
  • the ring cable lug 18 gets its name that is common in the connection technology from the fact that the screw opening 21 has an annularly closed edge, and the shaft 6 one in assembled position through the screw opening 21 inserted clamping screw 7 is ring-like and thus captively surrounded by the material of the ring cable lug 17.
  • the clamping screw 7 is in an open position in which the shaft 6 is completely unscrewed from the threaded bore 5 and an axial distance is formed between the insertion piece 16 and the connecting piece 4, which corresponds at least to the simple, but preferably at least twice the material thickness of the clamping web 20.
  • the guide head 8 is completely retracted into the housing bore 9.
  • the clamping element 15 which projects beyond the guide head 8 in terms of its diameter lies against the end of the housing bore 9 facing the insertion slot 11.
  • the clamping element 15 thus serves as a stop which prevents the displacement path of the clamping screw 7 with respect to an axial movement directed away from the connecting piece 4 beyond the opening position shown in FIG. 1.
  • the clamping screw is held in its open position by the housing bore 9 by the formation of a light, non-destructive frictional engagement.
  • the guide head 8 and the housing bore 9 are in particular dimensioned such that the guide head 8 lies in the housing bore 9 without play.
  • FIGS. 2 to 4 show successive actuation steps when the conductor 12 is clamped on the connection terminal device 1.
  • the insertion of the ring cable lug 18 is facilitated by a positioning contour of the housing 2, which comprises at least one rear wall 24 of the insertion slot 11.
  • the rear wall 24 is arranged such that when the in the insertion direction 23 inserted clamping web 20 on the rear wall 24, the screw opening 21 is approximately centered, but at least is in register with the threaded bore 5.
  • the clamping screw 7 is now moved in the axial direction against the connection piece 4 by means of an actuating tool 25, in particular a screwdriver.
  • an actuating force F that overcomes the retaining force of the frictional engagement between the guide head 8 and the housing bore 9.
  • the restraining force, and thus the required actuating force F is chosen so large that a displacement of the clamping screw 7 relative to the housing bore 9 is only caused by targeted actuation, but not by gravitation or by vibrations of the device 3.
  • the clamping screw 7 is pushed so far against the connector 4 until, according to FIG. 3, the threaded part of the shaft 6 bears against the connector 4.
  • the insertion piece 16 of the shaft 6 is already immersed in the threaded bore 5.
  • the ring cable lug 18, and thus the conductor 12 is already captively attached to the connection terminal device 1, so that further manual support and positioning of the conductor 12 is not necessary. This makes it easier, in particular, to carry out the clamping process in confined spaces.
  • the clamping screw 7 is now finally screwed into the threaded bore 5 by means of the actuating tool 25.
  • FIG. 4 shows the terminal device 1 in the closed position of the clamping screw 7, in which the clamping screw 7 is screwed as far as possible into the threaded bore 5, and the ring cable lug 18 for establishing a good electrical contact in a stationary manner and under tension between the guide tion head 8 and the connector 4 is fixed.
  • the clamping element 15 underlaid on the guide head 8 serves to increase the clamping effect in a manner known per se.
  • the disconnection process of the conductor 12 from the connection terminal device 1 is shown in successive actuation steps. This takes place essentially in the reverse order of the connection process. 5, the clamping screw 7 is unscrewed from the threaded bore 5 by means of the actuating tool 25 until the external thread 13 of the shaft 6 according to FIG. 6 is no longer in engagement with the threaded bore 5. Especially since the unthreaded insertion piece 16 at the free end of the shaft 6 is still protruding into the threaded bore 5 at this point, the conductor 12 cannot be removed immediately. To release the conductor 12, the actuating tool 25 is therefore pushed under the clamping element 15 and the clamping screw 7 according to FIG. 7 is lifted from the connecting piece 4 by exerting the actuating force F until the clamping element 15 hits the edge 22 according to FIG. 7, and the clamping screw 7 thereby again is moved back to its open position.
  • the conductor 12 can then be removed from the connection terminal device 1.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Clamps And Clips (AREA)

Abstract

L'invention concerne un dispositif de raccordement par serrage (1), conçu de manière particulièrement simple, destiné à un appareil électrique (3), permettant de connecter facilement un conducteur électrique (12) terminé notamment par une cosse annulaire (18). Ce dispositif (1) comprend un élément de raccordement (4) fixé à demeure sur un boîtier (2) et pourvu d'un trou fileté (5) qui coopère avec une borne à vis (7), maintenue de façon imperdable, pour réaliser la mise en contact par serrage d'un conducteur électrique (12). La borne à la vis (7) présente une tête de guidage (8) cylindrique allongée qui est guidée, sans jeu, dans un trou de boîtier (9) et qui peut coulisser dans le sens axial.
PCT/EP2004/000570 2003-02-03 2004-01-23 Dispositif de raccordement par serrage servant a raccorder une cosse annulaire et appareil electrique associe WO2004070885A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2006501592A JP2006516800A (ja) 2003-02-03 2004-01-23 リングケーブルシュー及び関連する電気装置を接続する接続端子装置
EP04704564A EP1590860A1 (fr) 2003-02-03 2004-01-23 Dispositif de raccordement par serrage servant a raccorder une cosse annulaire et appareil electrique associe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10304248.2 2003-02-03
DE2003104248 DE10304248A1 (de) 2003-02-03 2003-02-03 Anschlussklemmvorrichtung zum Anschluss eines Ringkabelschuhs und zugehöriges elektrisches Gerät

Publications (1)

Publication Number Publication Date
WO2004070885A1 true WO2004070885A1 (fr) 2004-08-19

Family

ID=29796663

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/000570 WO2004070885A1 (fr) 2003-02-03 2004-01-23 Dispositif de raccordement par serrage servant a raccorder une cosse annulaire et appareil electrique associe

Country Status (5)

Country Link
EP (1) EP1590860A1 (fr)
JP (1) JP2006516800A (fr)
CN (1) CN1745501A (fr)
DE (1) DE10304248A1 (fr)
WO (1) WO2004070885A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100350675C (zh) * 2005-05-31 2007-11-21 时珺 自举式接线端子
JP2008523087A (ja) * 2004-12-07 2008-07-03 アボット・ラボラトリーズ バニロイド受容体サブタイプ１（ｖｒ１）を抑制するチエノピリジル化合物およびこの使用

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004002779U1 (de) * 2004-02-21 2005-06-30 Wieland Electric Gmbh Klemmenblock
DE102007039709A1 (de) 2007-08-22 2009-02-26 Abb Ag Installationsschaltgerät mit einer Anschlussklemmenanordnung
DE102008010352A1 (de) * 2008-02-13 2009-08-20 Newfrey Llc, Newark Halteanordnung für Kabelschuhe
JP5502212B1 (ja) * 2013-01-22 2014-05-28 中国電力株式会社 端子台および切り離し器具
JP6826948B2 (ja) * 2017-05-22 2021-02-10 ヒロセ電機株式会社 端子着脱装置
JP7327097B2 (ja) * 2019-11-14 2023-08-16 住友電装株式会社 配線部材

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2250212A1 (fr) * 1973-10-31 1975-05-30 Siemens Ag
US4478478A (en) * 1979-08-03 1984-10-23 Legrand S.A. Electrical apparatus with retaining means for a terminal screw
FR2563947A1 (fr) * 1984-05-02 1985-11-08 Alsthom Cgee Agencement de raccordement par borne protegee pour appareillage electrique
DE4134004A1 (de) * 1990-10-16 1992-04-23 Telemecanique Electrique Anschlussklemme mit unverlierbarer schraube und klemmleiste mit derartigen klemmen
EP0681342A1 (fr) * 1994-05-05 1995-11-08 The Whitaker Corporation Assemblage de connecteur avec douille de contact à vis
DE29621267U1 (de) * 1996-12-06 1997-04-03 Siemens AG, 80333 München Einrichtung mit Schraubklemme
ES2122901A1 (es) * 1996-06-03 1998-12-16 Power Controls Iberica Sl Dispositivo de desplazamiento guiado de tornillos de bornes de conexion para aparellaje electrico.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2725519B2 (ja) * 1991-10-01 1998-03-11 三菱電機株式会社 端子台
FR2721142B1 (fr) * 1994-06-13 1996-07-19 Schneider Electric Sa Appareil électrique muni d'une borne à vis.
JP3156540B2 (ja) * 1995-04-11 2001-04-16 富士電機株式会社 電気機器の端子装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2250212A1 (fr) * 1973-10-31 1975-05-30 Siemens Ag
US4478478A (en) * 1979-08-03 1984-10-23 Legrand S.A. Electrical apparatus with retaining means for a terminal screw
FR2563947A1 (fr) * 1984-05-02 1985-11-08 Alsthom Cgee Agencement de raccordement par borne protegee pour appareillage electrique
DE4134004A1 (de) * 1990-10-16 1992-04-23 Telemecanique Electrique Anschlussklemme mit unverlierbarer schraube und klemmleiste mit derartigen klemmen
EP0681342A1 (fr) * 1994-05-05 1995-11-08 The Whitaker Corporation Assemblage de connecteur avec douille de contact à vis
ES2122901A1 (es) * 1996-06-03 1998-12-16 Power Controls Iberica Sl Dispositivo de desplazamiento guiado de tornillos de bornes de conexion para aparellaje electrico.
DE29621267U1 (de) * 1996-12-06 1997-04-03 Siemens AG, 80333 München Einrichtung mit Schraubklemme

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008523087A (ja) * 2004-12-07 2008-07-03 アボット・ラボラトリーズ バニロイド受容体サブタイプ１（ｖｒ１）を抑制するチエノピリジル化合物およびこの使用
CN100350675C (zh) * 2005-05-31 2007-11-21 时珺 自举式接线端子

Also Published As

Publication number Publication date
CN1745501A (zh) 2006-03-08
DE10304248A1 (de) 2004-01-29
EP1590860A1 (fr) 2005-11-02
JP2006516800A (ja) 2006-07-06

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