US3394601A - Switchgear apparatus - Google Patents

Switchgear apparatus Download PDF

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Publication number
US3394601A
US3394601A US543585A US54358566A US3394601A US 3394601 A US3394601 A US 3394601A US 543585 A US543585 A US 543585A US 54358566 A US54358566 A US 54358566A US 3394601 A US3394601 A US 3394601A
Authority
US
United States
Prior art keywords
gear
shaft
cam
gears
teeth
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
US543585A
Other languages
English (en)
Inventor
Waldenburger Hermann
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of US3394601A publication Critical patent/US3394601A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G15/00—Mechanical devices for initiating a movement automatically due to a specific cause
    • G05G15/04—Mechanical devices for initiating a movement automatically due to a specific cause due to distance or angle travelled by a member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/14—Operating parts, e.g. turn knob
    • H01H19/18—Operating parts, e.g. turn knob adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
    • H01H19/183—Operating parts, e.g. turn knob adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift adapted for operation by the simultaneous action of two cam plates, rotating at different speeds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/60—Angularly-movable actuating part carrying no contacts
    • H01H19/63—Contacts actuated by axial cams
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18288—Cam and lever
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable

Definitions

  • a planetary gearing comprising two equisized gears with different numbers of teeth, of which the one is stationary, and the other one is rotatably pivoted, and in which the driving is effected via a rotating intermediate gear.
  • the invention is based on the idea of converting such a planetary gearing in such a way, and of providing it with additional means, that a high reduction and a rapid contact actuation will become achievable in a simple manner.
  • the present invention is characterized by the fact that on a shaft, which is actuated by the driving system, two gears have their surfaces placed closely together. Each of these gears has a different number of teeth, and each is connected via an intermediate gear mounted on a stationary shaft. One of said gears being seated firmly on the shaft, while the other one is seated on the same shaft in an axially displaceable and tiltable manner.
  • the inner surface of one gear has a semi-circular groove, while the inner surface of the other gear has a cam guided in said semicircular groove of the other gear, and actuating means are provided on the outside surface of the non-stationary gear for actuating the contacts.
  • FIGS. 1 and 2 of the accompanying drawing both the construction and the mode of operation of an exemplified embodiment of the inventive type of switchgear apparatus will now be explained with reference to FIGS. 1 and 2 of the accompanying drawing, in which:
  • FIG. 1 shows the apparatus in an exploded view
  • FIGS. 2a to 20 show the various phases of movement during the actuation of the contacts.
  • the reference numeral 1 indicates a shaft which is operated via a Worm gear 2 and a pinion gear 3 by the driving system.
  • a gear 4 is mounted with the aid of set screws 5.
  • the center boss 9 of gear 6 is provided with an enlarged bore and is slotted in one direction thus allowing it to be tilted.
  • the inner surface of the gear 4 is provided with a cam 13, and the inner surface of the gear 6 is provided with a semicircular groove 14. Moreover, on the outer surface of gear 6, and at differently large diameters, there are arranged the earns 15 and 16 serving to actuate the terminating contacts 17 and 18.
  • the cam 16 meets against the contact 18. This is performed at the circumferential speed as given by the number of revolutions of the shaft 1, and not at the very low difference in speed of the gears 4 and 6, resulting in contact 18 being rapidly and reliably switched, and the driving system coming to a standstill.
  • gearing of equal diameter but with different numbers of teeth are utilized in planetary gearings.
  • the gear 4 comprises seventy teeth
  • the gear 6 sixty-eight teeth
  • the intermediate gear 12 comprises twenty-four teeth.
  • the actuation of the contact is effected at the circumferential of gear 6 whose number of rotations is about 10 times higher than its differential movement.
  • the invention is in no way restricted merely to the actuation of terminating or end contacts, but may be analogously applied to all cases where, in spite of a high reduction, a rapid control and actuation of contacts is supposed to be made possible.
  • Switch gear apparatus for actuation of contacts comprising:
  • said stationary gear having a cam on its inner surface, and said axially displace'able and tiltable gear having on its adjacent inner surface a coincident groove into which said cam is periodically engaged;
  • actuating means arranged on the outer surface of said axially displaceable and tiltable gear
  • said cam is caused to periodically disengage from said coincident groove resulting in the axial displacement and tilting of said displaceable and tiltable gear, and said means actuates said contacts.
  • Apparatus according to claim 2 including a collar which is pressed onto said driving shaft against a shoulder located adjacent said boss.
  • Apparatus according to claim 3 further including a spring, one .end of said spring being retained by said collar and the other end of said spring surrounding said boss, such that said spring urges the inner surfaces of said pair together.
  • actuating means is a pair of diametrically located cam surfaces, that during the axial displacement and tilting of said displaceable and tiltable gear, one of said cam surfaces is caused to activate one of said contacts, and that on further rotation of said drive shaft, the other of said cam surf-aces actuates the other of said contacts.
  • Apparatus according to claim 1 further including a holder for mounting said drive shaft and for mounting the shaft of said intermediate gear.
  • a worm gear being positioned to engage said pinion gear to cause rotation of said pair of gears.
  • Apparatus according to claim 7 further including a plurality of set screws located in said stationary gear for fixing the position of said stationary gear on said driving shaft.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Gear Transmission (AREA)
  • Retarders (AREA)
  • Transmission Devices (AREA)
US543585A 1965-04-23 1966-04-19 Switchgear apparatus Expired - Lifetime US3394601A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST023726 1965-04-23

Publications (1)

Publication Number Publication Date
US3394601A true US3394601A (en) 1968-07-30

Family

ID=7459843

Family Applications (1)

Application Number Title Priority Date Filing Date
US543585A Expired - Lifetime US3394601A (en) 1965-04-23 1966-04-19 Switchgear apparatus

Country Status (6)

Country Link
US (1) US3394601A (enrdf_load_html_response)
CH (1) CH452657A (enrdf_load_html_response)
DE (1) DE1472417A1 (enrdf_load_html_response)
FR (1) FR1477109A (enrdf_load_html_response)
GB (1) GB1078388A (enrdf_load_html_response)
SE (1) SE302532B (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4511085A (en) * 1981-04-08 1985-04-16 Perrot-Regnerbau Gmbh & Co. Swivel drive for fan-jet sprinkler

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111105940B (zh) * 2018-10-29 2021-11-16 平高集团有限公司 一种电动弹簧机构及接地开关
EP4099354B1 (en) 2021-06-01 2025-04-16 ABB Schweiz AG Electrical switch

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2528344A (en) * 1948-07-17 1950-10-31 Union Bag & Paper Corp Adjustable cam mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2528344A (en) * 1948-07-17 1950-10-31 Union Bag & Paper Corp Adjustable cam mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4511085A (en) * 1981-04-08 1985-04-16 Perrot-Regnerbau Gmbh & Co. Swivel drive for fan-jet sprinkler

Also Published As

Publication number Publication date
FR1477109A (fr) 1967-04-14
CH452657A (de) 1968-03-15
GB1078388A (en) 1967-08-09
SE302532B (enrdf_load_html_response) 1968-07-22
DE1472417A1 (de) 1969-01-23

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