EP0001793A1 - Accouplement de lignes, électrique rotatif sans fin uni- ou multipolaire - Google Patents

Accouplement de lignes, électrique rotatif sans fin uni- ou multipolaire Download PDF

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Publication number
EP0001793A1
EP0001793A1 EP78101192A EP78101192A EP0001793A1 EP 0001793 A1 EP0001793 A1 EP 0001793A1 EP 78101192 A EP78101192 A EP 78101192A EP 78101192 A EP78101192 A EP 78101192A EP 0001793 A1 EP0001793 A1 EP 0001793A1
Authority
EP
European Patent Office
Prior art keywords
contact
housing
pole
disks
coupling according
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
EP78101192A
Other languages
German (de)
English (en)
Other versions
EP0001793B1 (fr
Inventor
Rudolf Heyde
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.)
Hugo Kern und Liebers & Co Platinen- und Federnfabrik
Hugo Kern und Liebers & Co Platinen- und Federnfabrik GmbH
Kern & Liebers
Original Assignee
Hugo Kern und Liebers & Co Platinen- und Federnfabrik
Hugo Kern und Liebers & Co Platinen- und Federnfabrik GmbH
Kern & Liebers
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 Hugo Kern und Liebers & Co Platinen- und Federnfabrik, Hugo Kern und Liebers & Co Platinen- und Federnfabrik GmbH, Kern & Liebers filed Critical Hugo Kern und Liebers & Co Platinen- und Federnfabrik
Publication of EP0001793A1 publication Critical patent/EP0001793A1/fr
Application granted granted Critical
Publication of EP0001793B1 publication Critical patent/EP0001793B1/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 an endlessly rotatable, single or multi-pole electrical line coupling with parallel to a radial plane eno, mutually rotatable, ring-shaped contact threads, each of which is connected to a current conductor, each contact pole having at least one axially fixed first ring-shaped contact disk and at least one has two ring-shaped contact washers, on which spring parts act to generate the axial contact pressure, and furthermore the contact washers have radially projecting connecting lugs which project radially outward at one contact layer and a radial opening of an insulating housing enforce and protrude radially inward in the other contact disks and penetrate a radial breakthrough of an insulating hollow shaft which is rotatably mounted about its axis in the housing.
  • Such a rotatable electrical line coupling is known from DE-PS 1 104 583.
  • one of the contact disks of each contact pole is designed as a plate spring to generate the contact pressure.
  • Balls are provided between the contact disks, which ensure easy rotation of the contact disks and convey the electrical contact. In order to obtain a low electrical contact resistance on the contact surfaces, a high contact pressure is required. The balls used mean that despite this high contact pressure, the rotating coupling can run smoothly. Conversely, the balls used increase the electrical transition resistance again.
  • ball bearings are also necessary for the smooth-running mounting of the shaft in the housing. In this way, the cable coupling becomes structurally complex and has only small contact surfaces for the electrical transition at the contacts.
  • a rotatable electrical line coupling is known in which a contact pole is formed by annular contact disks.
  • the other contact pole is formed by a centrally arranged ball joint. Accordingly, this line coupling can only be implemented with two poles. A multi-pole version is not possible.
  • the invention has for its object to provide an endlessly rotatable electrical line coupling which is simple and cheap to manufacture and assemble, has a low electrical transition resistance with easy rotatability and can also be produced in a multi-pole version.
  • the line coupling according to the invention is extremely simple.
  • the contact p ole consist of ringusionnfömigen sliding contacts which can be prepared as a simple stamped parts.
  • the second contact disk of each pole is bent up helically and generates the contact pressure itself. No additional spring elements are therefore required to generate the contact pressure. This alone lowers the costs for production and assembly.
  • the axially abutting contact disks which do not require any additional spring elements, enable small radial external dimensions of the cable coupling and, in particular, small axial dimensions. These small axial dimensions, even with a multi-pole design, are essential for the installation of the coupling and also mean a considerable saving in the expensive plastic material which must be used for the insulating housing in accordance with the safety regulations.
  • the radially separated and helically bent second contact disks produce a relatively low contact pressure. Since the resilient second contact washers are only in contact with the first contact washers along the ring bead, the result of this low spring pressure is: only a slight frictional resistance of the coupling during rotation, so that it is easy to operate without additional aids.
  • the contact between the contact disks of each contact pole takes place in a circular line along the entire ring bead. This gives a large contact area which, even with the relatively weak contact pressure, leads to a very low electrical transition resistance of the contacts.
  • the smooth operation or coupling and the low contact pressure make additional bearings for the rotation of the shaft in the housing superfluous.
  • the grinding contact disks can even take over the bearing for the mutual penetration.
  • an axially fixed first contact disk and a second contact disk pressing against this are used for each contact pole, one of which is supported on an inner radial shoulder of the housing and the other on an outer radial shoulder of the shaft.
  • the housing can be divided into individual axial housing parts which are axially displaceable on the shaft. By axially pushing these housing parts together during assembly, the second contact disks of all poles are pressed together to generate the contact pressure.
  • two first contact disks are used for a contact pole, which are held at an axial distance from one another and are conductively connected to one another.
  • a second helically bent contact disk is inserted between these two first grain contact disks.
  • the housing and the shaft only serve to hold the contact disks for mutual rotation and to isolate the contacts. Since the resilient second contact disk protrudes in both axial directions on the interconnected first contact disks, an axial fixing or support on the dim housing on the surface is not necessary.
  • This embodiment allows a particularly simple manufacture and assembly of the line coupling.
  • a separate, simply constructed individual housing is made for each individual contact, into which the contact composed of the outer contact disks and the resilient contact disk arranged therebetween is snapped into place.
  • These individual housings containing a single contact pole can be axially joined together as independent components in the desired number to form a multipole rotary coupling. This means a considerable rationalization in production, since only one single-pole component has to be manufactured for a whole program of multi-pole couplings.
  • the interior of the shaft is divided into one or more insulating partition walls into axial subspaces, into each of which at most one connecting lug protrudes.
  • the partitions can protrude from the housing in the axial direction so that they can be used as drivers for the rotation of the shaft within the housing.
  • the housing can, for. B. be fixed against rotation by means of radially projecting tabs.
  • the housing In the first embodiment shown in FIGS. 1 to 7, the housing, generally designated 1o, consists of a cylindrical jacket 12, which extends in the axial direction by one that extends in the radial direction. Lid 14 is complete.
  • the housing is made of an insulating material, preferably plastic.
  • the cover is fixed to the jacket 12 by means of a snap-in tongue and groove connection 16.
  • a shaft 18 In the interior of the housing 10 a shaft 18 is rotatably mounted about the axis 20 of the arrangement.
  • the shaft 18 has a cylindrical axial cavity 22, which is divided into two subspaces 25 and 27 by a continuous partition wall 24 running in the axial direction.
  • the shaft 18 forms two radial shoulders 26 and 28 pointing in opposite directions. Opposite the shoulder 26, a radial shoulder 3o of the housing is formed by the cover 14, while opposite the shoulder 28 a radial shoulder 32 of the housing is formed by the jacket 12. Between the paragraphs 26 and 3o on the one hand and 28 and 32 on the other hand two radial annular contact disks 34 and 36 are enclosed. Each of the first contact disks 34 has a radially outwardly projecting connecting lug 38, while every second contact disk 36 has a radially inwardly projecting lug 4o. The connection lugs are shown as solder lugs, but clamping or screw connections can also be provided. Each first contact disk 34 also has an annular bead 12 projecting from the second contact disk 36.
  • Each contact plate 36 is one along Slit 44 cut open and bent in the unloaded state in the manner shown in FIG. 7 helically.
  • the second contact disks 36 are pressed into a flat shape, which results in the required axial contact pressure between the contact disks.
  • the ring bead 42 results in a linear contact of low friction with the pressed into a flat shape of the second contact plate 36 of each pair of contact plates.
  • Each soldering lug 38 is guided to the outside through a radial opening 46 in the housing shell 12, so that the poles (not shown) of an electrical line end can be connected to the soldering lugs 38.
  • the two poles 48 of the other electrical line end are introduced in the axial direction into the two subspaces 26 and 28 of the shaft interior and are connected to the soldering lugs 4o of the two contact disks 36 projecting inwards through openings 47 in the shaft 18.
  • the partition 24 protrudes in the axial direction from the open end of the shaft 18 and the housing 1o and can thus serve as a driver for the shaft 18 for rotation about the axis 2o.
  • the housing jacket 12 has radially projecting tabs 50, which on the other hand enable the housing to be fixed with respect to any device parts.
  • the embodiment shown in FIGS. 8 and 9 has three poles.
  • the housing is divided along a radial plane, so that it has two jacket parts 12'a and 12'b which are axially displaceably mounted on shaft 18, with shaft 18 'in this embodiment having three mutually offset by 120 ° Tranwande 24 'at one axial end radial shoulder 26 'sits, which is formed by a cover 14' for the housing.
  • the two axially inner radial shoulders 3o 'and 32' are formed by the casing parts 12'a and 12'b, while the radial shoulder 28 'opposite the radial shoulder 32' is formed by a second end cover 54 having a central opening 52 ''is formed.
  • the end cover 54 'sits with a press fit on the shaft 18' and is pressed on after the assembly of the parts in such a way that a mutual rotation of the parts with little friction is still possible while overcoming the spring forces.
  • the opposite end faces of the two jacket parts 12'a and 12'b form further radial shoulders 56 'and 58' in this embodiment.
  • Another pair of contact disks 34 'and 36' is inserted between them in such a way that their radially protruding soldering lugs 38 'and 4o' protrude through suitable openings 46 'and 47' in the housing jacket part 12'a and in the shaft 18 '.
  • the contact disks 36 ' are cut open and bent helically to generate the axial contact pressure.
  • a further first contact disk 34 ' can be arranged opposite the first contact disk 34' between the resilient second contact disk 36 'and the radial shoulder 58'.
  • This further contact disk 34 ' serves primarily to friction the second contact disk 36 'on the plastic of the housing shell 12'b to prevent.
  • the first two contact disks 34' can also be conductively connected to one another so that they both contribute to the contact.
  • solder lug 4o' projects to each of which a pole 48 'of the line axially inserted into the shaft is connected.
  • the poles of the line to be rotatably connected therewith are connected to the soldering lugs 38 ′ which are led through the housing openings to the outside.
  • a multi-pole Leitur coupling is composed of individual separate single-pole coupling components, one of which is shown in Figures 1o to 16.
  • two first contact disks 34 ′′ are provided, which are connected to one another by a web 66 ′′ and are held at an axial distance.
  • the two contact disks 34 "can be produced together with the web 66" and the outwardly protruding soldering lug 38 "as a one-piece stamped part. It is then only necessary to bend the web 66" U-shaped to the two contact disks 34 "in to bring the desired location.
  • a second contact disk 36 " which is shown in FIGS. 12 and 13, is placed between the two first contact disks 34".
  • the second contact disk 36 " can match the second contact disk shown in FIGS. 6 and 7.
  • the two helically bent contact disks can be soldered or welded to one another, but it is also possible to produce a contact disk 36 "with two screw turns as one piece.
  • the housing 10 consists of a cylindrical jacket part 12 ", the inside diameter of which essentially corresponds to the outside diameter of the first contact disks 34". At one axial end, the cylindrical jacket part 12 ′′ has an inner collar 68 ′′, which covers the contact disk 34 ′′ in an insulating manner.
  • Three axial projections 70 ′′ vcr protrude from this collar 68 ′′, which are designed in the form of a segment of a circle and offset at an angle to one another on a circle with a somewhat smaller diameter than the casing part 12 ′′. These projections 70 ′′ can be inserted into the axially other end of the cylindrical jacket 12 ′′ of a subsequent housing 10 ′′. In this way, a plurality of housings 10 ′′ can be plugged together coaxially, the projections 70 ′′ of one housing each being the second of the first contact disks 34 '' of the subsequent housing 10 ''.
  • the cylindrical jacket part 12 has a radially projecting receptacle 72" which extends over the entire axial length of the jacket part 12 “and which receives the web 66" when the contact pole composed of the contact disks 34 "and 36" is inserted.
  • the line coupling shown in FIGS. 15 and 16 forms a single-pole component.
  • a number of such components can be joined axially to one another in order to obtain a line coupling with the desired number of poles.
  • a shaft is inserted into the assembled components which penetrates all contact poles and has a number of axial partition walls corresponding to the intended number of poles.
  • the shaft 18 "holds the assembled housing 10" together in the axial direction, e.g. B. by a radial projection at one and a snap ring at its other axial end.
  • the U-shaped web 66 can also be led out of the housing as a connecting lug, so that a separate connecting lug 38" can be omitted.

Landscapes

  • Adjustable Resistors (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
EP78101192A 1977-10-29 1978-10-21 Accouplement de lignes, électrique rotatif sans fin uni- ou multipolaire Expired EP0001793B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2748667 1977-10-29
DE2748667A DE2748667C2 (de) 1977-10-29 1977-10-29 Endlos drehbare, ein- oder mehrpolige elektrische Leitungskupplung

Publications (2)

Publication Number Publication Date
EP0001793A1 true EP0001793A1 (fr) 1979-05-16
EP0001793B1 EP0001793B1 (fr) 1981-10-14

Family

ID=6022632

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78101192A Expired EP0001793B1 (fr) 1977-10-29 1978-10-21 Accouplement de lignes, électrique rotatif sans fin uni- ou multipolaire

Country Status (3)

Country Link
EP (1) EP0001793B1 (fr)
DE (1) DE2748667C2 (fr)
IT (1) IT1106233B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170063A (en) * 1984-12-24 1986-07-23 Int Gulf Venture Sa Electrical connections allowing relative movement
FR2690570A1 (fr) * 1992-04-27 1993-10-29 Malvy Michel Dispositif de connexion servant à assurer des liaisons électriques entre deux mécanismes adjacents animés d'un mouvement relatif de rotation autour d'un axe commun.
WO1996031926A1 (fr) * 1995-04-03 1996-10-10 Peter Wiesner Accouplement rotatif electrique pour luminaires
EP0967696A2 (fr) * 1998-06-24 1999-12-29 Jasun Engineering Limited Dispositif de bague collectrice

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4417775A (en) * 1980-11-26 1983-11-29 Honda Giken Kogyo Kabushiki Kaisha Electrical connector device
DE3113444C2 (de) * 1981-04-03 1984-05-03 Ehlebracht GmbH, 4904 Enger Ein- oder mehrpolige elektrische Verbindung,insbesondere für Kabeltrommeln

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR485520A (fr) * 1917-05-19 1918-01-16 Otto Kessler Prise de courant à rotation libre
US1596557A (en) * 1921-12-01 1926-08-17 Aermotor Co Electric-current collector
US1975964A (en) * 1931-04-17 1934-10-09 Willard H Mayhew Electrical swivel connecter
DE631864C (de) * 1933-07-03 1936-06-27 Hjalmar Asklund Drehbares Verbindungsstueck zur Verhinderung des Verdrillens elektrischer Leitungen
US2098304A (en) * 1935-09-23 1937-11-09 Louis G Nakich Swivel connecter
US2138631A (en) * 1936-03-23 1938-11-29 George C Guckes Cord take-up device for lamps and the like
CH257852A (de) * 1947-05-31 1948-10-31 Martin Hans Vorrichtung zur drehbaren Verbindung von elektrischen Leitungen.
US2832940A (en) * 1955-07-05 1958-04-29 Otto P Furpahs Swivel joint coupler for electric cords
FR2157179A5 (fr) * 1971-10-20 1973-06-01 Egic

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR485520A (fr) * 1917-05-19 1918-01-16 Otto Kessler Prise de courant à rotation libre
US1596557A (en) * 1921-12-01 1926-08-17 Aermotor Co Electric-current collector
US1975964A (en) * 1931-04-17 1934-10-09 Willard H Mayhew Electrical swivel connecter
DE631864C (de) * 1933-07-03 1936-06-27 Hjalmar Asklund Drehbares Verbindungsstueck zur Verhinderung des Verdrillens elektrischer Leitungen
US2098304A (en) * 1935-09-23 1937-11-09 Louis G Nakich Swivel connecter
US2138631A (en) * 1936-03-23 1938-11-29 George C Guckes Cord take-up device for lamps and the like
CH257852A (de) * 1947-05-31 1948-10-31 Martin Hans Vorrichtung zur drehbaren Verbindung von elektrischen Leitungen.
US2832940A (en) * 1955-07-05 1958-04-29 Otto P Furpahs Swivel joint coupler for electric cords
FR2157179A5 (fr) * 1971-10-20 1973-06-01 Egic

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170063A (en) * 1984-12-24 1986-07-23 Int Gulf Venture Sa Electrical connections allowing relative movement
FR2690570A1 (fr) * 1992-04-27 1993-10-29 Malvy Michel Dispositif de connexion servant à assurer des liaisons électriques entre deux mécanismes adjacents animés d'un mouvement relatif de rotation autour d'un axe commun.
WO1996031926A1 (fr) * 1995-04-03 1996-10-10 Peter Wiesner Accouplement rotatif electrique pour luminaires
EP0967696A2 (fr) * 1998-06-24 1999-12-29 Jasun Engineering Limited Dispositif de bague collectrice
EP0967696A3 (fr) * 1998-06-24 2000-04-12 Jasun Engineering Limited Dispositif de bague collectrice

Also Published As

Publication number Publication date
EP0001793B1 (fr) 1981-10-14
DE2748667B1 (de) 1979-03-15
IT7851682A0 (it) 1978-10-27
IT1106233B (it) 1985-11-11
DE2748667C2 (de) 1981-01-22

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