EP0131105A1 - Accouplement rotatif pour un câble à plusieurs conducteurs - Google Patents

Accouplement rotatif pour un câble à plusieurs conducteurs Download PDF

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Publication number
EP0131105A1
EP0131105A1 EP84105174A EP84105174A EP0131105A1 EP 0131105 A1 EP0131105 A1 EP 0131105A1 EP 84105174 A EP84105174 A EP 84105174A EP 84105174 A EP84105174 A EP 84105174A EP 0131105 A1 EP0131105 A1 EP 0131105A1
Authority
EP
European Patent Office
Prior art keywords
coupling sleeve
rotary coupling
coupling according
contact springs
connecting piece
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
EP84105174A
Other languages
German (de)
English (en)
Other versions
EP0131105B1 (fr
Inventor
Gerhard Meisel
Rudolf Hahn
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.)
Braun GmbH
Original Assignee
Braun 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 Braun GmbH filed Critical Braun GmbH
Publication of EP0131105A1 publication Critical patent/EP0131105A1/fr
Application granted granted Critical
Publication of EP0131105B1 publication Critical patent/EP0131105B1/fr
Expired 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
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/64—Devices for uninterrupted current collection

Definitions

  • the invention relates to a rotary coupling for multi-conductor cables according to the preamble of the main claim.
  • Such couplings are known in various designs. They are generally used in electrical devices that are in use - e.g. due to frequent gripping - are exposed to constant or frequent twisting, which would lead to a twisting of the connecting cable without such a rotating coupling.
  • the invention overcomes the disadvantages described by a new rotary coupling, which is designed according to the characterizing part of the main claim and which simultaneously optimizes the electrical contacting and the mechanical rotary bearing completely independently of it, and in addition by the releasable plug locking of the rotating part an unproblematic assembly and interchangeability of the Connection cable is guaranteed.
  • the rotary coupling according to the invention has a coupling sleeve 10 which is generally fixed in the housing of the electrical device to be connected or, in a special embodiment, can also be part of the device housing.
  • this coupling sleeve 10 are the two contact springs 5 and 12, which are preferably those in Figure 4 have an approximately equilateral triangular shape, firmly used.
  • the connector 15 inserted concentrically into the coupling sleeve 10 carries two correspondingly arranged slip rings 6 and 7, against which the contact springs 5 and 12 bear in an electrically conductive manner.
  • the kink protection sleeve 1 and the connecting cable 2 guided therein form with the connecting piece 15 an endlessly rotatable structural unit in the coupling sleeve 10.
  • the connector 15 is designed as a rotationally symmetrical body and carries the two slip rings 6 and 7 on cylindrical sections 15.1 and 15.2 of different circumference.
  • the two cylindrical sections mentioned are connected to one another by a conical section 15.3, which facilitates the self-centering insertion of the network-side connector 15 into the device-side coupling sleeve 10 during assembly.
  • the connector 15 is mounted at its two outer ends with large sliding surfaces in the coupling sleeve, with the inner end portion 18 in a recess 10.1 formed in the bottom 10.2 of the coupling sleeve 10, where it is surrounded by an annular bead 16, and with the Guide section 4 on the circumferential edge 11 of the coupling sleeve 10 surrounding this.
  • the coupling sleeve 10 and the connector 15 have in the region of their outer bearing formed by the guide section 4 and the edge 11 molded or molded locking elements which lock the connector 15 to the coupling sleeve 10 coaxially but axially immovable.
  • the coupling sleeve 10 carries for this purpose as a locking element on the outside of its edge 11 circumferential nose 11.1 and the connector 15 a molded, this nose 11.1 overlapping fastening ring 3. It has proven to be useful to the Be To form fastening ring 3 so that it engages over the circumferential locking lug 11.1 only at individual sections 17 and that it is radially elastically deflectable or stretchable at these sections 17.
  • the later disassembly can be made easier by the fact that the fastening ring 3 in the area of the sections 17 has recesses 17.1 on its outside for the insertion of unlocking means - for example a simple lever tool.
  • the - as already mentioned - preferably approximately triangular contact springs 5 and 12, the corners of which are expediently adapted to the inner rounding of the coupling sleeve 10, each have a connecting tab 13 and 14, which are parallel to the coupling axis through corresponding recesses in the bottom 10.1 of the coupling sleeve 10 extend and to which the device-side electrical conductor connections can be connected - for example soldered on.
  • the connecting lugs 13 and 14 preferably start from one of the three rounded corners of the contact springs, while the contact springs are divided at one of the other two rounded corners, so that their free ends opposite each other at this division can spring together and the contact springs can be elastic overall are deformable.
  • the contact springs can be deflected radially in the region of their legs lying between the rounded corners, since they are supported on the coupling sleeve 10 only with the rounded corners and the legs run straight and freely through the interior of the coupling sleeve.
  • the inner radius of the contact springs can initially be dimensioned somewhat smaller than the outer radius of the slip rings, and when the connector with the slip rings is inserted axially into the coupling sleeve with the contact springs, each of the three contact spring legs is pressed radially outward in the form of a curve, the resulting elastic restoring force thereby being one even contact pressure against the slip rings and thus produces good electrical contact with the slip rings, evenly distributed over the three legs.
  • the contact springs 5 and 12 on the cable feed edges of their legs 19, 20 and 21 have outwardly bent sliding tabs 22, 23 and 24, which axially insert the connector 15 into the coupling sleeve and the associated radial expansion facilitate the contact springs in that the slip rings 5 and 12 first place on the slopes of these sliding tabs and slide on them into the contact springs.
  • the axial centering achieved during assembly by the triangular shape of the contact springs 5 and 12 can be further improved in that the two equilateral triangular contact springs are arranged rotated relative to one another by an angle of 60 °. This arrangement also ensures that the connecting lug 14 of the contact spring 5 can be guided past the contact spring 12 at a sufficient safety distance.
  • a particular advantage of the present invention has been found to be that a rotary coupling which is reliable under all practical conditions can be realized, which has exceptionally small external dimensions and nevertheless allows the transmission of relatively high electrical powers. Furthermore, the particularly smooth and wear-resistant rotary bearing of the coupling according to the invention should be emphasized.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP84105174A 1983-05-18 1984-05-08 Accouplement rotatif pour un câble à plusieurs conducteurs Expired EP0131105B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3318057 1983-05-18
DE3318057A DE3318057A1 (de) 1983-05-18 1983-05-18 Drehkupplung fuer mehrleiterkabel

Publications (2)

Publication Number Publication Date
EP0131105A1 true EP0131105A1 (fr) 1985-01-16
EP0131105B1 EP0131105B1 (fr) 1986-08-27

Family

ID=6199277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105174A Expired EP0131105B1 (fr) 1983-05-18 1984-05-08 Accouplement rotatif pour un câble à plusieurs conducteurs

Country Status (2)

Country Link
EP (1) EP0131105B1 (fr)
DE (2) DE3318057A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2410844A (en) * 2004-02-03 2005-08-10 Ahoku Electronic Company Swivel electrical connector

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1050644A (fr) * 1900-01-01
CH335537A (fr) * 1956-03-10 1959-01-15 Comp Generale Electricite Dispositif à contacts glissants électriques
DE2630450A1 (de) * 1975-07-18 1977-02-03 Faco Sa Anschlussteil fuer elektrogeraete
DE2813139A1 (de) * 1978-03-25 1979-09-27 Rowenta Werke Gmbh Drehbare elektrische leitungskupplung
DE2836410A1 (de) * 1978-08-19 1980-03-20 Braun Ag Drehkupplung fuer elektrische handgeraete

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234495A (en) * 1963-02-08 1966-02-08 Space Technology And Res Corp Rotary electric coupling
DE7140600U (de) * 1971-10-27 1975-12-04 Heyde R Elektrische Leitungskupplung
CA1013444A (en) * 1974-03-15 1977-07-05 Henry J. Walter Swivelling electrical connection
DE2507965A1 (de) * 1975-02-25 1976-09-02 Euras Elekt Forsch & Prod Drehbare elektrische leitungskupplung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1050644A (fr) * 1900-01-01
CH335537A (fr) * 1956-03-10 1959-01-15 Comp Generale Electricite Dispositif à contacts glissants électriques
DE2630450A1 (de) * 1975-07-18 1977-02-03 Faco Sa Anschlussteil fuer elektrogeraete
DE2813139A1 (de) * 1978-03-25 1979-09-27 Rowenta Werke Gmbh Drehbare elektrische leitungskupplung
DE2836410A1 (de) * 1978-08-19 1980-03-20 Braun Ag Drehkupplung fuer elektrische handgeraete

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2410844A (en) * 2004-02-03 2005-08-10 Ahoku Electronic Company Swivel electrical connector

Also Published As

Publication number Publication date
DE3460550D1 (en) 1986-10-02
EP0131105B1 (fr) 1986-08-27
DE3318057A1 (de) 1984-11-22

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