US3034081A - Electric connection between fixed and rotatable parts - Google Patents

Electric connection between fixed and rotatable parts Download PDF

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Publication number
US3034081A
US3034081A US667859A US66785957A US3034081A US 3034081 A US3034081 A US 3034081A US 667859 A US667859 A US 667859A US 66785957 A US66785957 A US 66785957A US 3034081 A US3034081 A US 3034081A
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US
United States
Prior art keywords
rotatable
conductor
conductors
fixed
strip
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.)
Expired - Lifetime
Application number
US667859A
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English (en)
Inventor
Boerdijk Arie Hendrik
Holst Johannes Martinus
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.)
US Philips Corp
North American Philips Co Inc
Original Assignee
US Philips Corp
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 US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3034081A publication Critical patent/US3034081A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H02K13/003—Structural associations of slip-rings
    • 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
    • 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

  • Such connections are known and usually consist of a brush provided in the stationary part and a rotatable part moving against this brush.
  • This known connection is employed especially with electric motors and generators. They have the disadvantage that sparks may be struck between the rotatable part and the brush, so that fluctuations in the intensity of the electric current may occur.
  • current intensity and/or voltage diflerences are employed for the conversion of air oscillations into, for example, magnetic or mechanical records or conversely, it is important to establish a very satisfactory electric contact between any relatively rotatable parts, since otherwise troublesome interference voltages occur.
  • One example of such an apparatus is a device for converting air oscillations into magnetic records or converse 1y, while the recording heads or the reproducing heads respectively perform a rotary movement.
  • the recording or the reproducing of air oscillations with the aid of, for example, a microphone or a loudspeaker or the conversion of electric oscillations into magnetic records or of a record into a different kind of record require an electric connection between the rotating heads and a stationary part of the device, this connection being required to fulfill high demands.
  • the known brush connection gives rise to troublesome irregularities during the conversion.
  • this has the advantage that the wire or strip does not move locally both with respect to one annular conductor and to the other annular conductor.
  • the rotatable guide members also consist of approximately annular conductors arranged in alignment side by side and, moreover rotatable about their common axis.
  • the approximately annular conductors are shaped in the form of circular discs.
  • the FIGURE shows the discs 1 and 2 in a coaxial position side by side.
  • the disc 1 is rotatable about the associated shaft 3 and the disc 2 is stationary.
  • the discs 4 and 5 are also arranged in alignment side by side and rotatable about their common shaft 6.
  • the shaft 6 is journaled so as to be revolvable about the common shaft of the discs 1 and 2.
  • the shaft 6 is preferably at the same distance from the disc 1 and the disc 2, While it crosses the shaft 3 at right angles.
  • the diameter of the discs 4 and 5 is approximately equal to the distance between the discs 1 and 2.
  • the diameter of the discs 1 and 2 is approximately equal to the distance between the discs 4 and 5.
  • An electrically conductive wire 7 is guided from the disc 1 via the disc 4 to the disc 2 and from there via the disc 5 again to the disc 1.
  • the shaft 6 is journaled by means of an arm 8 on a shaft 9, which is in line with the shaft 3. If the disc 1 rotates with a speedof, for example, 2x in the direction of the arrow 10, the arm will revolve with the discs 4 and 5 about the shaft 9 with a speed x. Consequently, the wire 7 will roll clear from all discs, so that the wire is not dragged along one of the discs. Thus a satisfactory electrical contact between the discs 1 and 2 is obtained by means of the wire 7.
  • the approximately annular conductors of the above embodiment, shaped in the form of the discs 1 and 2 may have a polygonal, for example a hexagonal form in order to increase the contact pressure.
  • the external corners of a star-shaped conductor should be considered together as an approximately annular conductor.
  • the external profile of these conductors may be chosen, with respect to the shape of the section of the endless conductor, so that the electrical contact is self-cleaning during operation, for example by providing a V-groove with a sharp apex or by providing contact springs or points, along which the endless conductors rub each time.
  • Apparatus for conducting electric current between a fixed conductor and a rotatable driven conductor comprising a rotatable driven conductor, a fixed conductor and means to electrically connect said conductors; said means characterized by a continuous conducting strip driven by said rotatable conductor, a first rotatable guide member driven by said strip and guiding said strip from said rotatable conductor to said fixed conductor, a second rotatable guide member driven by said strip and guiding said strip from said fixed conductor to said rotatable conductor and rotatable means intermediate said fixed and rotatable conductor and coaxial therewith supporting said first and second guide members for orbital movement about said conductors,
  • An electric connector comprising coaxial fixed and rotatable conductors in spaced parallel relation, a pair of rotatable disc shaped guide members, a shaft rotatably mounting said guide members, a shaft pivotally mounted intermediate and coaxial with said conductors, means joining both said shafts for mounting said first-mentioned shaft for orbital movement about said conductors, an electrically conductive endless strip being guided from one of the conductors substantially around one of the guide members to the other conductor, and then substantially around the other guide member and back to said one conductor.
  • An electric connector comprising fixed and rotatable conductors which are spaced coaxially relative to one another, a pair of guide members, means for mounting said guide members for rotation about a common axis displaced laterally from the axis of said conductors, means for supporting said first mentioned means for revolution about the common axis of said conductors, an electrically conductive endless strip being guided from one of the conductors substantially around one of the guide members to the other conductor, and then substantially around the other guide member and back to said one conductor.
  • Apparatus for conducting electric current between a fixed conductor and a rotatable driven conductor comprising a rotatable driven conductor, a fixed conductor coaxial therewith and means to electrically connect said conductors; said means characterized by a continuous conducting strip driven by said rotatable conductor, a first rotatable guide member driven by said strip and guiding said strip from said rotatable conductor to said fixed conductor, a second rotatable guide member driven by said strip and guiding said strip from said fixed conductor to said rotatable conductor, and means supporting said first and second guide members for circular orbital movement about the common axis of said conductors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Friction Gearing (AREA)
  • Brushes (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Transmission Devices (AREA)
US667859A 1956-07-21 1957-06-25 Electric connection between fixed and rotatable parts Expired - Lifetime US3034081A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL353075X 1956-07-21

Publications (1)

Publication Number Publication Date
US3034081A true US3034081A (en) 1962-05-08

Family

ID=19785115

Family Applications (1)

Application Number Title Priority Date Filing Date
US667859A Expired - Lifetime US3034081A (en) 1956-07-21 1957-06-25 Electric connection between fixed and rotatable parts

Country Status (8)

Country Link
US (1) US3034081A (forum.php)
JP (1) JPS346160B1 (forum.php)
BE (1) BE559383A (forum.php)
CH (1) CH353075A (forum.php)
DE (1) DE1099029B (forum.php)
FR (1) FR1179193A (forum.php)
GB (1) GB838123A (forum.php)
NL (2) NL209182A (forum.php)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1148601A3 (de) * 2000-04-19 2002-03-27 HARTMANN & KÖNIG, STROMZUFÜHRUNGS-GMBH & CO. KG Vorrichtung zur Übertragung von elektrischem Strom von einem feststehenden Anschluss auf einen drehbaren Ring

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2276983A (en) * 1939-09-30 1942-03-17 Bbc Brown Boveri & Cie Electric current transmission mechanism
US2364325A (en) * 1942-12-30 1944-12-05 Staude Variable speed transmission
US2364323A (en) * 1942-06-25 1944-12-05 Staude Variable speed transmission
US2467758A (en) * 1944-09-22 1949-04-19 Rca Corp Movable circuit closure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE724429C (de) * 1939-10-06 1942-08-29 Bbc Brown Boveri & Cie Einrichtung zur UEbertragung elektrischer Stroeme

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2276983A (en) * 1939-09-30 1942-03-17 Bbc Brown Boveri & Cie Electric current transmission mechanism
US2364323A (en) * 1942-06-25 1944-12-05 Staude Variable speed transmission
US2364325A (en) * 1942-12-30 1944-12-05 Staude Variable speed transmission
US2467758A (en) * 1944-09-22 1949-04-19 Rca Corp Movable circuit closure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1148601A3 (de) * 2000-04-19 2002-03-27 HARTMANN & KÖNIG, STROMZUFÜHRUNGS-GMBH & CO. KG Vorrichtung zur Übertragung von elektrischem Strom von einem feststehenden Anschluss auf einen drehbaren Ring

Also Published As

Publication number Publication date
NL91375C (forum.php) 1958-08-15
NL209182A (forum.php)
FR1179193A (fr) 1959-05-21
BE559383A (forum.php) 1958-01-20
JPS346160B1 (forum.php) 1959-07-16
DE1099029B (de) 1961-02-09
CH353075A (de) 1961-03-31
GB838123A (en) 1960-06-22

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