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EP0254157A2 - Accouplement rotatif pour un appareil électrique - Google Patents

Accouplement rotatif pour un appareil électrique Download PDF

Info

Publication number
EP0254157A2
EP0254157A2 EP87109981A EP87109981A EP0254157A2 EP 0254157 A2 EP0254157 A2 EP 0254157A2 EP 87109981 A EP87109981 A EP 87109981A EP 87109981 A EP87109981 A EP 87109981A EP 0254157 A2 EP0254157 A2 EP 0254157A2
Authority
EP
European Patent Office
Prior art keywords
rotary coupling
insulating plate
coupling according
housing
pot
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
EP87109981A
Other languages
German (de)
English (en)
Other versions
EP0254157B1 (fr
EP0254157A3 (en
Inventor
Josef Mych
Wilfried Rolf
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
Priority to AT87109981T priority Critical patent/ATE81231T1/de
Publication of EP0254157A2 publication Critical patent/EP0254157A2/fr
Publication of EP0254157A3 publication Critical patent/EP0254157A3/de
Application granted granted Critical
Publication of EP0254157B1 publication Critical patent/EP0254157B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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 an electrical device with two concentrically arranged, cylindrical contact pieces for receiving two sliding contacts, which are connected to the conductors of the multi-conductor cable, an insulating plate being provided between the sliding contacts.
  • the invention has for its object to design the rotary coupling with the associated contact pins and sliding contacts such that a force effect between the sliding contacts and the contact pins, which could lead to a reduction in the effective contact area, is avoided.
  • This object is achieved by a rotary coupling with the features of the main claim.
  • the insulating plate is advantageously also self-supporting and for this purpose is arranged at a slight radial distance from the cylindrical inner wall of the housing, so that it serves as a floating bearing. It is particularly advantageous that the rotary flange of the rotary coupling is received in a pot-like, cylindrical housing and that the insulating plate is arranged in the pot-like housing.
  • the diameter of the insulating plate can be only slightly smaller than the inside diameter of the pot-like housing, which consists of two housing sections.
  • the one housing section of the pot-like housing is slightly smaller in diameter than the outer diameter of the insulating plate and serves as a bearing seat for the Insulating plate.
  • the insulating plate can therefore not be adjusted in the axial direction when installed and it is ensured that the sliding contacts remain on the contact pieces.
  • two passage openings are provided in the bottom of the pot-like housing, through which the cables are guided.
  • the sliding contacts are largely prevented from rotating.
  • the frictional forces are absorbed by abutments in the insulating plate, in which the sliding contacts or metal bars connected to them are guided.
  • the insulating plate itself is secured against turning by means of abutments that come into contact with the housing and prevents the sliding contacts, which lie against a cover part or are inserted into a radial slot of the insulating plate, from rotating.
  • the insulating plate can be supported against the inner wall of the pot-like housing in the event of excessive stress on the rotary coupling or when the cable is subjected to high radial loads and acts as a second Bearing of the rotary coupling.
  • the rotary movement of the rotary coupling relative to the pot-like housing and relative to the sliding contacts and the insulating plate is not impaired.
  • these forces do not affect the sliding contacts and the cables connected to them, so that the cables cannot be damaged and contact surfaces between sliding contacts and contact pieces are preserved.
  • the sliding contacts and the insulating plate can be relatively quickly and easily on the contact pieces mount and then attach the pot-like housing to the rotary flange.
  • a simple assembly of the preassembled module in the device is ensured in that the pot-like housing is equipped with corresponding diametrically opposite locking elements which can be connected to corresponding abutments which are provided in the device.
  • the simplified assembly of the pot-like housing with the rotary coupling further reduces the cost of the entire device.
  • the housing 2 denotes the rear part of a housing of an electrical device, not shown, for example a round styler or curling iron.
  • the housing 2 has a cylindrical wall 4, which is provided with an annular groove 6 into which, for example, two locking elements 8 of a pot-like housing 10 can be snapped into place.
  • the pot-like housing consists of a one-piece, cylindrical wall 12 with a flat bottom 14 and an opening 16 opposite this for receiving a rotary coupling 18.
  • annular groove 22 In the area of the end edge 20 of the pot-like housing 10 there is an annular groove 22, into which an annular rotary flange 24 of a multi-conductor cable 26 is rotatably received.
  • the rotary flange 24 is inelastic and is firmly connected to the multi-conductor cable or vulcanized to it.
  • the multi-conductor cable 26 can be formed, for example, from rubber or from a plastic encapsulation with at least two conductor cables 28 and 30.
  • the conductor cables 28 and 30 are connected to a plug, not shown in the drawing, for connection to a power network.
  • the conductor cable 28 is connected to a first contact piece 32, onto which an insulating bush 34 is pushed.
  • the two contact pieces 32, 36 and the insulating bush are fastened or vulcanized into the rubber-like part of the multi-conductor cable 26 by means of a cylindrical holder 37.
  • a flange 39 connected to the holder 37 bears against the end face 41 of the multi-conductor cable 26.
  • the insulating bush 34 is somewhat longer than the second contact piece 36.
  • the end part 43 of the insulating bush 34 forms a cylindrical seat 40 for receiving an insulating plate 42.
  • the insulating plate 42 consists of a circular plate 44 with a concentrically arranged bore 46 so that the plate 44 can be pushed onto the seat 40.
  • U-shaped cover part 48 which is open in the direction of the interior of the housing 2 and also in the direction of the inner surface 50 of the pot-like housing 10.
  • the cover part 48 shields the first contact piece 32 from the second contact part 36 and the metal webs 56, 66 from one another.
  • the circular plate 44 has on its annular end edge two diametrically opposed abutments or noses 45 which can be inserted into recesses (not shown) provided in the pot-like housing 10. This measure prevented the insulating plate from rotating with the contact pieces 32, 36 when the multi-conductor cable 26 was rotated.
  • the plate 44 is provided with a radially extending slot 52 which extends to the outer wall 54 of the U-shaped cover part 48 and which serves to receive a metal web 56 which is fixedly connected to a cylindrical sliding contact 58.
  • the slot width is advantageously chosen somewhat larger than the thickness of the metal web 56 so that it has a certain freedom of movement in the slot 52.
  • the sliding contact 58 is continuously slotted so that it can be adapted to the outer diameter of the contact piece 36.
  • the metal web 56 is guided along the outer wall 54 of the cover part 48 and shielded from the first contact piece 32 and a second sliding contact.
  • the metal web 56 can be dimensioned relatively strong for greater power transmission and is connected via an electrical cable 60 to an electrical unit provided in the housing 2.
  • the sliding contact 62 On the free end 38 of the first contact piece 32 behind the plate 44 and inside the cover part 48 there is the second sliding contact 62, to which a cable 64 is connected, which is also connected to the electrical unit.
  • the sliding contact 62 consists of a cylindrical sleeve 63 which is pushed onto one end 38.
  • the cylindrical sleeve 63 is slotted so that it can be adapted to the diameter of the end 38.
  • a metal web 66 is fixedly arranged on the sliding contact 62 and is fixedly connected to a cable 64.
  • the surface of the metal web 56 is supported, depending on the direction of rotation of the multi-conductor cable 26, against one or the other end edge of the slot, so that the sliding contact 58 also rotates is largely prevented when the contact pins 32, 36 rotate.
  • the side walls of the metal web 66 also lie against the inside of the cover part 48, so that the metal web 66 is only rotated a little.
  • the insulating plate 42 is prevented from rotating in the pot-like housing 10 by the lugs 45 provided on the insulating plate, which are introduced into recesses provided in a housing 10. This gives the sliding contacts 58, 62 a security against turning without having to be firmly connected to the insulating plate 42.
  • the cables 60 and 64 are guided through two through openings 70 provided in the bottom 14 of the housing for electrical consumption.
  • two diametrically opposed locking elements 8 are arranged, which are firmly connected at the end to the wall of the pot-like housing 10.
  • the locking elements 8 are parallel to each other by two ver Running slots are formed, which extend to the end face of the bottom 14 so that they can spring back when inserted into the housing 2 to snap into the annular groove 6.
  • the rotary coupling with the multi-conductor cable 26, the associated sliding contacts 58, 62 and the insulating plate 42 can be installed very easily.
  • the second sliding contact 58 is first pushed axially onto the second contact piece 36 and then the insulating plate 42 onto the seat 40. Then the first sliding contact 62 is surrounded on the end 38 of the first contact piece 48.
  • the pot-like housing 10 can be snapped onto the rotary flange 24 by means of its annular groove 22.
  • the preassembled module can only be inserted into the interior of the housing 2 until the two latching elements 8 snap into the annular groove 6.
  • the multi-conductor cable 26 can now be rotated and tilted relative to the housing without forces occurring between the two sliding contacts 58, 62 and the contact pieces 32, 36, which could reduce the effective contact surface.
  • damage to the connection points of the cables 60, 64 with the metal webs 56, 66 is eliminated and, at the same time, the sliding contacts 58, 62 are prevented from lifting off from the contact pieces 32, 36, since they are not firmly attached to the insulating plate 42 or the housing 2 are connected.
  • the sliding contacts 58, 62 can thus easily follow the tilting movement of the multi-conductor cable and the contact pieces 32, 36.
  • the plate 44 of the insulating plate 42 bears against an end face 72 of the housing section 74, which is formed in that the first housing section has a diameter which is slightly smaller than the outer diameter of the plate 44, while the second housing section 76 has a diameter which is slightly larger than the outer diameter of the plate 44.
  • the ring surface 78 of the insulating plate 42 bears against the inner wall of the second housing section 76. As a result, a second bearing and a good support of the multi-conductor cable 26 in the pot-like housing 10 are obtained.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
EP87109981A 1986-07-19 1987-07-10 Accouplement rotatif pour un appareil électrique Expired - Lifetime EP0254157B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87109981T ATE81231T1 (de) 1986-07-19 1987-07-10 Drehkupplung fuer ein elektrisches geraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3624474 1986-07-19
DE3624474A DE3624474C2 (de) 1986-07-19 1986-07-19 Drehkupplung für ein elektrisches Gerät

Publications (3)

Publication Number Publication Date
EP0254157A2 true EP0254157A2 (fr) 1988-01-27
EP0254157A3 EP0254157A3 (en) 1988-09-07
EP0254157B1 EP0254157B1 (fr) 1992-09-30

Family

ID=6305560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109981A Expired - Lifetime EP0254157B1 (fr) 1986-07-19 1987-07-10 Accouplement rotatif pour un appareil électrique

Country Status (4)

Country Link
EP (1) EP0254157B1 (fr)
AT (1) ATE81231T1 (fr)
DE (1) DE3624474C2 (fr)
ES (1) ES2033745T3 (fr)

Cited By (2)

* 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
GB2554081A (en) * 2016-09-15 2018-03-28 Dyson Technology Ltd Hand held appliance

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9006054U1 (de) * 1990-05-29 1990-08-02 Alschibaja, Michael Th., Dr.med., 8000 München Kabelstecker
DE19912000A1 (de) 1999-03-17 2000-10-19 Ims Connector Systems Gmbh Steckverbinder
DE102008015453A1 (de) 2008-03-22 2009-09-24 Illinois Tool Works Inc., Glenview Drehkontaktverbinder für elektrische Kabel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1050644A (fr) * 1900-01-01
DE2511294B2 (de) * 1974-03-15 1978-03-16 Bristol-Myers Co., New York, N.Y. (V.St.A.) Drehkupplung
EP0124153A1 (fr) * 1983-03-31 1984-11-07 Koninklijke Philips Electronics N.V. Accouplement électrique rotatif

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2153418B2 (de) * 1971-10-27 1977-04-14 Endlos drehbare, elektrische leitungskupplung
US3937543A (en) * 1975-01-29 1976-02-10 Continental Hair Products, Inc. Electrical swivel contact assembly
DE2507965A1 (de) * 1975-02-25 1976-09-02 Euras Elekt Forsch & Prod Drehbare elektrische leitungskupplung
JPS5851393B2 (ja) * 1975-04-30 1983-11-16 松下電工株式会社 回転コネクタ−
DE2813139C2 (de) * 1978-03-25 1982-09-23 Rowenta-Werke Gmbh, 6050 Offenbach Drehbare Leitungsverbindung
DE2903105C2 (de) * 1979-01-27 1982-11-11 WIK Elektro-Hausgeräte-Vertriebsgesellschaft mbH & Co Produktionskommanditgesellschaft, 4300 Essen Frisiergerät zum Stylen, Aufwickeln und Trocknen von Haaren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1050644A (fr) * 1900-01-01
DE2511294B2 (de) * 1974-03-15 1978-03-16 Bristol-Myers Co., New York, N.Y. (V.St.A.) Drehkupplung
EP0124153A1 (fr) * 1983-03-31 1984-11-07 Koninklijke Philips Electronics N.V. Accouplement électrique rotatif

Cited By (4)

* 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
GB2554081A (en) * 2016-09-15 2018-03-28 Dyson Technology Ltd Hand held appliance
US10186822B2 (en) 2016-09-15 2019-01-22 Dyson Technology Limited Hand held appliance
GB2554081B (en) * 2016-09-15 2020-02-12 Dyson Technology Ltd Hand held appliance

Also Published As

Publication number Publication date
ES2033745T3 (es) 1993-04-01
EP0254157B1 (fr) 1992-09-30
EP0254157A3 (en) 1988-09-07
DE3624474C2 (de) 1994-06-16
DE3624474A1 (de) 1988-01-28
ATE81231T1 (de) 1992-10-15

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