US3440582A - Step-by-step switch - Google Patents

Step-by-step switch Download PDF

Info

Publication number
US3440582A
US3440582A US579397A US3440582DA US3440582A US 3440582 A US3440582 A US 3440582A US 579397 A US579397 A US 579397A US 3440582D A US3440582D A US 3440582DA US 3440582 A US3440582 A US 3440582A
Authority
US
United States
Prior art keywords
armature
switch
movement
plunger
locking
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
US579397A
Other languages
English (en)
Inventor
Wolfram Gerspach
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3440582A publication Critical patent/US3440582A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/18—Armature is rotatable through an unlimited number of revolutions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/08—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet
    • H01H51/082—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet using rotating ratchet mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/08—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet
    • H01H51/082—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet using rotating ratchet mechanism
    • H01H51/084—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet using rotating ratchet mechanism with axial ratchet elements

Definitions

  • a magnetically operated Stepping switch wherein the switching member comprises a turnable spring-biased solenoid core arranged for both rotary and axial movement.
  • the core has a radial pin alternately engagebale with opposed cam teeth to effect its rotary movement as it is axially reciprocated by energization and deenergization of the solenoid.
  • Magnetic blocking members normally block the core against axial movement, and are shifted to unblock the core by the flux of the solenoid.
  • This invention relates to step-by-step switches based on the plunger armature principle, in which the switch drive utilises the tractive power of a plunger armature in a magnet coil through which current passes, and in which the switch movement is effected by means of a pin which is firmly inserted radially in the extended plunger armature and the axial movement of the plunger armature is limited by two crown ratchet wheels, the common axis of which is constituted by the plunger armature.
  • the pin is pulled out of the button of the tooth of the first ratchet wheel by the traction of the plunger armature and comes to bear against the opposite tooth flank of the second ratchet wheel, on which it slides away in a rotary movement. After collapse of the magnetic field the pin drops back into the next tooth bottom of the rest ratchet wheel and thereby performs a complete switching step which is equivalent to an angular movement corresponding to the tooth pitch.
  • An object of the present invention is to achieve the effect that mechanical accelerations due to external forces on the step-by-step switch in any direction cannot give rise to a movement step. On termination of the action of such an acceleration the conditon of the switch which previously existed remains in effect.
  • this is achieved by a blocking device, through the fact that additional magnetic locking means are disposed in the magnetic flux path of the plunger armature magnet, in such a manner that on the commencement of the build-up of the magnetic field for the plunger armature they are drawn out of the path of movement of the plunger armature or out of the path of movement of locking elements joined to the plunger armature before, 0n the further build-up of the magnetic field, the plunger armature itself is attracted.
  • step-by-step switch If the step-by-step switch according to the invention is not energized magnetically but simply accelerated mechanically, as by external forces with a component in the axial direction, the plunger armature is held locked against axial movement and thus cannot advance the stepby-step switch.
  • FIGURE 1 illustrates the construction of a step-bystep switch in the position of rest
  • FIGURE 2 illustrates the switch with armature attracted
  • FIGURE 3 illustrates two toothed end face parts which are disposed opposite but offset in relation to one another.
  • the opposite toothing is not shown as a pair of teeth;
  • FIGURE 4 illustrates the switch in a view from above.
  • a step-by-step switch consists of an iron magnet shell 1, a coil 2, a plunger armature 3, a cross-pin 4, and two end face crown toothings or gear wheels 5 and 6.
  • an improved armature blocking means which is automatically releasable, comprising slide bolts in the form of locking magnet pieces 7 and 8 with restoring springs 9 and 10, and a locking pot or cup 11 with a restoring spring 12.
  • the stepping switch further comprises contact springs 13 and 14 which are movable with the plunger 3, and a stationary supply contact pin 15, with a stationary separate output contact pin 16 for each step.
  • FIGURE 2 this attracted condition of the step-bystep switch is illustrated.
  • the plunger armature drops back into its position of rest under the action of the restoring spring 12.
  • the cross-pin thus passes from position 18 (FIGURE 3) of the crown toothing 5 to position 19 of the crown toothing 6.
  • the plunger armature has thus performed the second half of the rotary step by sliding on the tooth flank.
  • the two locking magnet pieces 7 and 8 are brought again into the starting position by the action of the springs '9 and 10.
  • the step-by-step switch can be moved on one step at a time.
  • the contact springs 13 and 14 have simply to be constructed with a larger spring path than the free axial movement play of the plunger armature 3 in relation to the locking magnet pieces 7 and 8.
  • This free movement play or lost motion of the plunger armature 3 can for example be'seen in FIGURE 1 as the distance between the bottom edge of the locking pot 11 and the locking magnet pieces 7 and 8.
  • the mechanical locking between the locking magnet pieces and the locking pot may be constructed differently from the construction described above. It is however essential that through the build-up of the magnetic field for the plunger armature the mechanical locking should be released.
  • a shock and acceleration resistant electrically-operated electric stepping switch comprising, in combination:
  • armature drive means comprising opposed sets of cam teeth alternately engageable by said cross pin as the armature is moved between said first and second positions, for efiecting a stepped rotary move- (a) a cup aifixed to the armature and movable axially therewith,
  • the blocking means further includes flux-conducting slide bearings carrying said magnet pieces and connected to the magnetic circuit for the magnet coil.
  • said magnet pieces comprise slide bolts movable in radial direction with respect to said armature.
  • said springs having an inherent path of spring movement which is greater than said lost motion movement of the armature, and being so constituted that they normally remain in contact with said fixed contacts at all times that the armature remains blocked or in its first position.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Push-Button Switches (AREA)
US579397A 1965-09-16 1966-09-14 Step-by-step switch Expired - Lifetime US3440582A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE30108A DE1246096B (de) 1965-09-16 1965-09-16 Schrittschalter nach dem Tauchankerprinzip

Publications (1)

Publication Number Publication Date
US3440582A true US3440582A (en) 1969-04-22

Family

ID=7074292

Family Applications (1)

Application Number Title Priority Date Filing Date
US579397A Expired - Lifetime US3440582A (en) 1965-09-16 1966-09-14 Step-by-step switch

Country Status (4)

Country Link
US (1) US3440582A (de)
CH (1) CH460915A (de)
DE (1) DE1246096B (de)
GB (1) GB1127810A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3671900A (en) * 1969-08-25 1972-06-20 Philips Corp Rotary actuator and indicator
US3873951A (en) * 1973-10-29 1975-03-25 William S Blake Electrical safety device
US3956606A (en) * 1974-04-25 1976-05-11 Material Control, Inc. Cable operated safety stop switch

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3145278A (en) * 1960-07-01 1964-08-18 Jennings Radio Mfg Corp Combined linear and rotary actuator means for switch
US3236970A (en) * 1963-09-03 1966-02-22 Cons Electronics Ind Rotary stepper switch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3145278A (en) * 1960-07-01 1964-08-18 Jennings Radio Mfg Corp Combined linear and rotary actuator means for switch
US3236970A (en) * 1963-09-03 1966-02-22 Cons Electronics Ind Rotary stepper switch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3671900A (en) * 1969-08-25 1972-06-20 Philips Corp Rotary actuator and indicator
US3873951A (en) * 1973-10-29 1975-03-25 William S Blake Electrical safety device
US3956606A (en) * 1974-04-25 1976-05-11 Material Control, Inc. Cable operated safety stop switch

Also Published As

Publication number Publication date
DE1246096B (de) 1967-08-03
CH460915A (de) 1968-08-15
GB1127810A (en) 1968-09-18

Similar Documents

Publication Publication Date Title
US3419739A (en) Electromechanical actuator
GB1464821A (en) Control rod drive mechanism for a nuclear reactor
US2864018A (en) Impulse motor
US3440582A (en) Step-by-step switch
GB1095263A (en) Electro-magnetic ratchet
US3233135A (en) Motor with a displaceable rotor
US4609899A (en) Polarized electromagnet having three states and a control circuit for said electromagnet
US2376557A (en) Impulse generator
DE718353C (de) Unterbrecher zur Steuerung des Erregerstromes fuer magnetelektrische Maschinen
US2617949A (en) Magnetically operated device
US3748508A (en) Motor constructions including a sliding stop member
US1954809A (en) Electromagnetic brake
US3112068A (en) Electromagnetically operated counter
US2570518A (en) Oscillating step motor
US3559012A (en) Step motion producing apparatus
DE853307C (de) Kleinmotor mit Bremsanker, der einen Teil des magnetischen Kreises bildet
DE1086784B (de) Schalterantrieb mittels eines periodisch erregten Elektromagneten
RU2659798C1 (ru) Шаговый двигатель
US1488774A (en) Electromagnetic step-by-step mechanism
US2809249A (en) Switch members
GB534768A (en) Improvements in and relating to magnetically operated devices
US3501657A (en) Synchronous a.c. motor with a permanent magnet rotor and directional control therefor
US3139549A (en) High speed stepping apparatus
US3760208A (en) Electromagnetic stepping motor
US1483876A (en) Electromagnetic step-by-step switch with magnetic brake