EP1492199A1 - Dispositif de fixation ainsi que connecteur à vis muni d'un tel dispositif de fixation - Google Patents

Dispositif de fixation ainsi que connecteur à vis muni d'un tel dispositif de fixation Download PDF

Info

Publication number
EP1492199A1
EP1492199A1 EP03014290A EP03014290A EP1492199A1 EP 1492199 A1 EP1492199 A1 EP 1492199A1 EP 03014290 A EP03014290 A EP 03014290A EP 03014290 A EP03014290 A EP 03014290A EP 1492199 A1 EP1492199 A1 EP 1492199A1
Authority
EP
European Patent Office
Prior art keywords
trough
connector
connector body
tub
fixing device
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.)
Granted
Application number
EP03014290A
Other languages
German (de)
English (en)
Other versions
EP1492199B1 (fr
Inventor
Marion Renz
Christian Dipl.-Ing. Niklis (FH)
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.)
Arcus Elektrotechnik Alois Schiffmann GmbH
Original Assignee
Arcus Elektrotechnik Alois Schiffmann GmbH
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 Arcus Elektrotechnik Alois Schiffmann GmbH filed Critical Arcus Elektrotechnik Alois Schiffmann GmbH
Priority to EP03014290A priority Critical patent/EP1492199B1/fr
Publication of EP1492199A1 publication Critical patent/EP1492199A1/fr
Application granted granted Critical
Publication of EP1492199B1 publication Critical patent/EP1492199B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • H01R4/36—Conductive members located under tip 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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2404—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation
    • H01R4/2408—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation actuated by clamping screws
    • 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
    • H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
    • H01R4/5075—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw having an uneven wire receiving surface to improve the contact

Definitions

  • the invention relates to a fixing device for fixing and supporting conductor ends in a hollow connector body of a screw connector.
  • the invention further relates to a screw connector for cable conductors, with a hollow, elongated connector body for receiving conductor ends to be connected, with threaded bores for clamping screws which can be screwed into the connector body transversely to its longitudinal extent, and with a fixing device for the conductor ends in the connector body.
  • screw connectors and corresponding fixation devices are known per se and are commercially available.
  • the screw connectors usually have a cylindrical design, the threaded bores being arranged in the upper region of the connector body and receiving corresponding clamping screws. These clamping screws are located in the lower region of the connector body, fixing elements which are designed as individual cup-shaped ring edges.
  • These fixing elements are aligned coaxially with the axis of the threaded bores and the clamping screws to be used and have a pin on their opposite side in order to fix the cup-shaped fixing elements at the corresponding points in radial receiving bores in the connector body, for example by riveting or gluing.
  • fixation elements are used in such a screw connector in order to connect a conductor end in the correct position in the interior of the Fix connector body and support when the clamping screw is screwed radially into the connector body.
  • Practice has shown, however, that such fixation elements form good support for the cable conductor, but the cable conductors are not always adequately fixed and can yield laterally when the clamping screw is tightened. This can lead to improper clamping connections, with the result that the electrical function of the screw connector is inadequate and malfunctions may occur.
  • the invention is therefore based on the object of specifying a fixing device of the type mentioned, which can be produced and assembled in a particularly simple manner, so that screw connectors equipped therewith ensure perfect operation.
  • the solution according to the invention consists in designing a fixing device of the type mentioned at the outset in such a way that the fixing device is designed as an elongated, one-piece trough which has an arcuate outer circumference in cross section, can be inserted into the hollow connector body and has a profile on its inside for engagement with the respective Has conductor ends.
  • the task is solved in a satisfactory manner with the fixing device according to the invention. Since a one-piece fixation device is available, the effort involved in producing and assembling the fixation device can be considerably reduced.
  • the device according to the invention can have any length that corresponds to the length of the corresponding conductor receptacle in the screw connector. No special tool is required when assembling the fixing device, but it can simply be pushed in by hand. The effort for production and assembly is also independent of how many clamping screws the corresponding screw connector is equipped with.
  • the trough has a semi-cylindrical cross section and has a tooth bed on its inside as a profile.
  • the orientation of the trough is not important, since it then generally has a symmetrical configuration.
  • the inside of the trough has a series of teeth which are spaced apart substantially uniformly and which project radially inwards transversely to the longitudinal axis of the trough.
  • the fixation device according to the invention thus offers a large number of fixation elements which can function to fix a corresponding conductor end.
  • the profiled inside of the tub has a wedge-shaped profile in cross section, which widens away from the bottom of the tub.
  • This wedge-shaped profile advantageously ensures an adjustment and positioning of a corresponding conductor end. This means that a corresponding conductor end is automatically in the correct position for engagement with the corresponding clamping screws.
  • the profiling is in the form of axially symmetrical radial teeth which form an axially extending trough in the longitudinal direction of the trough.
  • the teeth have areas arranged in pairs, which project radially inward from the outer circumference of the tub. In this way, an optimal fixation effect for a wide variety of conductor shapes and conductor sizes is achieved with a minimal amount of material.
  • the receiving opening in a connector is then not unnecessarily blocked by teeth.
  • the profiling has rib-shaped projecting teeth which taper inwards in a wedge shape from the outer circumference in the radial direction.
  • the profiling forms a tooth bed with wedge-shaped cutting edges in order to penetrate into the outer insulation of a cable conductor and thereby fix the conductor end in the desired position, so that the conductor end cannot deflect either in the axial direction or in the circumferential direction.
  • the trough can consist of a metal part, for example of aluminum or a copper alloy. It is particularly advantageous if the trough consists of a high-temperature-resistant, electrically conductive or electrically insulating plastic material. It is particularly preferred if the tub consists of a polyamide with glass fiber reinforcement.
  • Such devices can be manufactured very precisely and easily by injection molding.
  • the trough is formed in the device according to the invention for penetrating the insulation of insulated cable conductors, in order to ensure the required exact positioning and support of the respective conductor end without the actual conductor being damaged in the cable.
  • the trough has an arcuate outer circumference in cross section, the curvature of which can be applied to the inner contour of a connector body. The positioning of the fixing device in a corresponding connector body is thus facilitated.
  • the trough has at least one radially outwardly projecting stop for fixing in a screw connector. An exact positioning of the fixing device in the screw connector can thus be achieved.
  • the tub consists of a material with a certain elasticity, such that the Resiliently give in to walls radially inward when subjected to pressure from outside. In this way, the insertion of the fixing device in a screw connector is facilitated, but at the same time it ensures that the fixing device is pushed into its fixing position.
  • the screw connector according to the invention is provided with a fixing device of the type described above.
  • the profiling in the fixing device is expediently formed at least in the areas that lie opposite the threaded bores for the clamping screws. This ensures optimal positioning, fixation and support of a corresponding conductor end.
  • the outer circumference of the trough in cross section follows the curvature of the receiving opening in the connector body and extends in the circumferential direction beyond the central plane of the receiving opening. This measure helps to achieve an exact positioning of the fixing device, in which the trough, due to the geometry, bears against the inner wall of the connector body.
  • the connector body has a radial recess in which a stop of the trough of the fixing device can be received.
  • the fixing device is thus fixed with a single stop both in the axial direction and in the circumferential direction.
  • the connector body has a radial through-hole which penetrates its opposite walls and forms the radial recess for the stop of the trough.
  • a through hole can be easily made and at the same time forms a viewing opening from the outside into the interior of the connector body in order to check the correct positioning of a conductor end in the connector body, as well as the recess for the abovementioned stop.
  • the through hole in the connector according to the invention is expediently formed in the central region of the connector body. This enables the position of two conductor ends to be checked, which are inserted into the connector body from opposite sides.
  • the trough can be detachably attached in the connector body.
  • the fixing device can thus be replaced if necessary.
  • the bottom of the trough of the fixing device is attached opposite the threaded bores. This results in a symmetrical arrangement in which the loads that occur can be absorbed evenly.
  • the connector according to the invention is expediently designed such that the threaded bores for the clamping screws are aligned with the axial plane of symmetry of the trough.
  • the trough has a wedge-shaped web in the radial plane of the axis of each threaded bore, which tapers in the radial direction towards the threaded bore.
  • FIG. 1 and 2 of the drawings schematically show a screw connector according to the invention for elongated cable conductors.
  • a connector body 32 with an essentially cylindrical design for receiving conductor ends to be connected.
  • the receptacle is formed by a cylinder bore, which is arranged eccentrically in the axial direction with respect to the longitudinal axis of the connector body 32, so that on one side, for example the upper side 38, a greater wall thickness is available in order to accommodate corresponding clamping screws 36 which are in corresponding threaded bores 34 are screwed into the connector body 32, which, according to FIG. 3, are formed in the upper side 38 of the connector body 32.
  • Below the respective clamping screw 36 is the receiving opening 40 for a conductor end, not shown.
  • a fixing device 10 is inserted into the screw connector 30, as is indicated schematically in FIGS. 1 to 3. This is explained in more detail below.
  • a bore 42 can be seen which serves as a viewing opening in order to check the positioning of conductor ends in the interior of the connector body before they are tightened with clamping screws.
  • a further bore 44 can be seen, which is expediently opposite the first bore 42 and in one Operation with this can be made.
  • This second bore 44 serves to receive a stop 26 of a fixing device 10, as will be explained below.
  • the clamping screws are designed as milling screws which are equipped with an inner edge for tightening the clamping screws 36.
  • Such milling screws are known per se and can cut through the insulation of conductor ends in order to then apply with their flat side a corresponding contact pressure to the actual conductor of a conductor end and to press it against the bottom of the connector body 32. This ensures reliable mechanical and electrical contacting in practice.
  • the structure of the fixing device is shown schematically in FIGS. 4 to 6.
  • the fixing device 10 is designed as an elongated one-piece trough 12 which has an arcuate outer circumference 20 in cross section.
  • Such a fixing device 10 can, as indicated in FIG. 3, be pushed into the hollow connector body 32 in the axial direction.
  • the tub 12 On its inside 14, the tub 12 has a profile 16 for engagement with a corresponding conductor end.
  • the tub 12 has a substantially semi-cylindrical cross-section and is provided on its inside 14 with a tooth bed as a profile 16, a row of teeth 18 being provided which are provided at substantially equal intervals in the longitudinal direction of the tub 12 and radially therefrom protrude inside. This can be seen most clearly in FIGS. 6 and 8.
  • the profiled inside 14 of the tub 12 has a wedge-shaped profile in cross section, which widens away from the bottom 24 of the tub 12 and thus delimits the receiving opening 40 in the connector body 32 on one side.
  • This wedge-shaped profile ensures proper positioning of a conductor end in relation to the respective clamping screws 36.
  • the profiling 16 is designed in the form of axially symmetrical radial teeth 18 which form an axially extending trough 22 in the longitudinal direction of the trough 12.
  • the fixing device 10 can thus regardless of their orientation in the connector body 32 and ensures good positioning of a conductor end.
  • the teeth 18, as shown in FIGS. 3, 4 and 7, are formed with regions arranged in pairs which protrude radially inwards from the outer circumference of the tub 12.
  • the teeth 18 need not be point-shaped, rather the profiling 16 can have rib-shaped projecting teeth 18 which taper in a wedge shape from the outer circumference in the radial direction, as is shown by the reference number 19 in FIGS. 6 and 6. 8 is indicated.
  • the tub 12 can be made of a metallic material such as e.g. Manufacture aluminum or a copper alloy.
  • the tub 12 can also consist of plastic, which can be electrically insulating or electrically conductive. It is important in this context that the tub 12 offers the necessary strength to reliably fix and support a conductor when it is contacted with a clamping screw.
  • the tub 12 consists of a high-temperature-resistant, electrically insulating plastic material, in particular of polyamide with glass fiber reinforcement.
  • a high-temperature-resistant, electrically insulating plastic material in particular of polyamide with glass fiber reinforcement.
  • Such materials are easy to form, for example by injection molding, can be produced with exact dimensions and are light in weight with good strength in operation.
  • the profiling 16 of the trough 12 is designed with its teeth to penetrate the insulation of insulated cable conductors and ensures proper fixation when the clamping screws in the connector body 32 are tightened.
  • the trough 12 has an arcuate outer circumference 20 in cross section, the curvature of which can be applied to the inner contour of the connector body 32.
  • the fixing device 10 lies with its outer circumference snugly against the inner circumference of the connector body 32 and forms a suitable abutment for the conductor end when the clamping screws 36 are tightened.
  • the tub 12 has on its outside a stop 26 projecting radially outwards. This serves to fix the fixing device 10 in a screw connector 30.
  • the stop 26 comes into engagement with the bore 44 on the underside of the connector body 32.
  • a single such stop 26 is sufficient to reliably fix the trough 12 in the connector body 32 both in the circumferential direction and in the axial direction.
  • the screw connector 30 is equipped with a continuous conductor receptacle, such a bore 44 on the underside of the connector body 32 is of course sufficient. If the connector body 32 is provided with a dividing wall, a separate fixing device 10 with a trough 12 will be used for each conductor receptacle that then arises , in which case a corresponding hole for each tub 12 is sufficient.
  • the trough can have a small, radially outwardly projecting web at one or both ends in the longitudinal direction, which is then supported on the respective front edge of the receiving opening of the connector body.
  • the trough 12 expediently consists of a material with a certain elasticity, such that the walls yield elastically radially inwards under a pressure load.
  • the fixing device 10 can be attached and fixed in a particularly reliable manner in the connector body 32. If, in fact, the tub 12 is pushed into the cylindrical interior of the connector body 32, the stop 26 projecting radially outward initially sits on the bottom surface of the connector body.
  • the tub 12 can be pushed in without difficulty until the stop 26 reaches the position of the bore 44 and penetrates into it.
  • the outer circumference 20 of the fixing device 10 thus comes into full engagement with the inner wall of the connector body 32.
  • the elastic material of the tub 12 supports the penetration of the stop 26 into the bore 44. At the same time, the tub 12 is biased in an elastic manner against the wall of the connector body 32. An unintentional loosening of the Fixing device 10 from the connector body 32 is thus reliably prevented.
  • the fixing device 10 has a number of symmetries.
  • the trough 12 can thus be inserted into the respective connector body 32 without taking into account an orientation.
  • the trough 12 is formed symmetrically with its profile both in the circumferential direction and in the axial direction. This results from the representations in FIGS. 3 and 7.
  • the respective teeth 18 of the profiling 16 expediently have uniform distances in the longitudinal direction or from a central plane of the tub 12, which passes through the tub 12 in the radial direction, as schematically shown in FIG Fig. 8 is indicated.

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  • Connector Housings Or Holding Contact Members (AREA)
EP03014290A 2003-06-25 2003-06-25 Dispositif de fixation ainsi que connecteur à vis muni d'un tel dispositif de fixation Expired - Fee Related EP1492199B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03014290A EP1492199B1 (fr) 2003-06-25 2003-06-25 Dispositif de fixation ainsi que connecteur à vis muni d'un tel dispositif de fixation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03014290A EP1492199B1 (fr) 2003-06-25 2003-06-25 Dispositif de fixation ainsi que connecteur à vis muni d'un tel dispositif de fixation

Publications (2)

Publication Number Publication Date
EP1492199A1 true EP1492199A1 (fr) 2004-12-29
EP1492199B1 EP1492199B1 (fr) 2007-05-02

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EP03014290A Expired - Fee Related EP1492199B1 (fr) 2003-06-25 2003-06-25 Dispositif de fixation ainsi que connecteur à vis muni d'un tel dispositif de fixation

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EP (1) EP1492199B1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007005193A2 (fr) * 2005-07-01 2007-01-11 Blazing Products, Inc. Connecteur electrique
ES2338833A1 (es) * 2007-03-29 2010-05-12 Ridelin, S.L. Conector electrico de apriete mecanico para conductores electricos.
US7806718B2 (en) 2006-10-23 2010-10-05 Blazing Products Inc. Electrical connectors and methods of connecting
FR2988527A1 (fr) * 2012-03-21 2013-09-27 Seifel Borne de connexion electrique comportant des moyens de guidage pour un conducteur electrique
US9035184B2 (en) 2011-11-03 2015-05-19 Blazing Products, Inc. Electrical connectors

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124409A (en) * 1964-03-10 electrical connector
US3836941A (en) * 1973-07-05 1974-09-17 Thomas & Betts Corp Electrical connector with resilient pressure pad
CH567338A5 (fr) * 1973-04-07 1975-09-30 Pfisterer Elektrotech Karl
US4103986A (en) * 1977-09-12 1978-08-01 Thomas & Betts Corporation Electrical terminal
US4269465A (en) * 1979-12-26 1981-05-26 Amp Incorporated Splice connector for aluminum wire
DE3942520A1 (de) * 1989-12-22 1991-06-27 Kleinhuis Hermann Gmbh Aus einem metallischen werkstoff bestehende anschlussklemme
WO2001091239A1 (fr) * 2000-05-25 2001-11-29 Tyco Electronics Raychem Gmbh Patte de fixation de cable

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124409A (en) * 1964-03-10 electrical connector
CH567338A5 (fr) * 1973-04-07 1975-09-30 Pfisterer Elektrotech Karl
US3836941A (en) * 1973-07-05 1974-09-17 Thomas & Betts Corp Electrical connector with resilient pressure pad
US4103986A (en) * 1977-09-12 1978-08-01 Thomas & Betts Corporation Electrical terminal
US4269465A (en) * 1979-12-26 1981-05-26 Amp Incorporated Splice connector for aluminum wire
DE3942520A1 (de) * 1989-12-22 1991-06-27 Kleinhuis Hermann Gmbh Aus einem metallischen werkstoff bestehende anschlussklemme
WO2001091239A1 (fr) * 2000-05-25 2001-11-29 Tyco Electronics Raychem Gmbh Patte de fixation de cable

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007005193A2 (fr) * 2005-07-01 2007-01-11 Blazing Products, Inc. Connecteur electrique
WO2007005193A3 (fr) * 2005-07-01 2007-03-29 Blazing Products Inc Connecteur electrique
US7335050B2 (en) 2005-07-01 2008-02-26 Blazing Products, Inc. Electrical connector for use in connecting wires
US7806718B2 (en) 2006-10-23 2010-10-05 Blazing Products Inc. Electrical connectors and methods of connecting
ES2338833A1 (es) * 2007-03-29 2010-05-12 Ridelin, S.L. Conector electrico de apriete mecanico para conductores electricos.
US9035184B2 (en) 2011-11-03 2015-05-19 Blazing Products, Inc. Electrical connectors
US9614297B2 (en) 2011-11-03 2017-04-04 Blazing Products, Inc. Electrical connectors
FR2988527A1 (fr) * 2012-03-21 2013-09-27 Seifel Borne de connexion electrique comportant des moyens de guidage pour un conducteur electrique

Also Published As

Publication number Publication date
EP1492199B1 (fr) 2007-05-02

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