US2994227A - Relay for stepwise movement of a toothed member - Google Patents

Relay for stepwise movement of a toothed member Download PDF

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Publication number
US2994227A
US2994227A US792894A US79289459A US2994227A US 2994227 A US2994227 A US 2994227A US 792894 A US792894 A US 792894A US 79289459 A US79289459 A US 79289459A US 2994227 A US2994227 A US 2994227A
Authority
US
United States
Prior art keywords
relay
rod
pawl wheel
limb
armature
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
US792894A
Other languages
English (en)
Inventor
Lips Theodoor Maria Albert
Verhoeff Jacob
Vervest Wilhelmus Lambertus
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 US2994227A publication Critical patent/US2994227A/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
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H02K7/065—Electromechanical oscillators; Vibrating magnetic drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H31/00—Other gearings with freewheeling members or other intermittently driving members
    • F16H31/003—Step-by-step mechanisms for rotary motion
    • F16H31/005—Step-by-step mechanisms for rotary motion with pawls driven by a reciprocating or oscillating transmission member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/02—Multi-position wiper switches
    • H01H67/04—Multi-position wiper switches having wipers movable only in one direction for purpose of selection
    • H01H67/06—Rotary switches, i.e. having angularly movable wipers
    • 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
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
    • Y10T74/1553—Lever actuator
    • Y10T74/1555—Rotary driven element
    • 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
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1558—Grip units and features
    • 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
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1558—Grip units and features
    • Y10T74/1565—Gripper releasing devices
    • 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
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1558—Grip units and features
    • Y10T74/1577—Gripper mountings, 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
    • Y10T74/2133—Pawls and ratchets

Definitions

  • the invention relates to a relay intended for moving stepwise a toothed part, this relay comprising a metal core, a coil surrounding this core, an L-shaped yoke secured to the core and an armature secured to the yoke so as to be rotatable and consisting of two limbs, secured to each other approximately at right angles, of which one armature limb extending approximately parallel to the core is loaded by a spring, which may be adjustable.
  • the invention consists in that, with such a known relay, the other armature limb has rigidly secured to it one end of a rod made of thin, resilient material whereas the other end of the resilient rod is movable in all directions to a limited extent relative to the limb, this rod causing the member to move.
  • the advantage of the relay according to the invention consists in that the mass of the rod moving the member is small, so that this rod is capable of performing the bilaterally required movements rapidly and without high acceleration forces. Moreover the construction may be compact.
  • the resilient rod is supported near its free end during the operational stroke, whereas it is freely resilient throughout its length during the return stroke. It is therefore not necessary to fix the position of the toothed member during the return stroke.
  • the armature limb has, at the end remote from the point of rotation, a plate which is at right angles to the limb and which has a recess in the form of a trapezium which is preferably rectangular on one side and of which the longer side, which is the base, is at right angles to the side edges of the limb, whereas the free end of the resilient rod projects through the recess and lies, when the relay is out of operation, in a cavity provided at the point where the oblique side and the side opposite the base coincide.
  • This embodiment of the invention is particularly suitable in the case in which the toothed member to be moved is parallel to the longitudinal directon of the relay.
  • the armature limb is provided on the side of the point of rotation, with a U-shaped plate, of which one side is secured to the armature limb and of which the bridge is at right angles to the armature limb, whereas the other side has a cavity, which lies at the point of intersection between a boundary of the limb at right angles to the side edges and an oblique part, the end of the resilient rod lying in the cavity and projecting beyond the limb, when the relay is out of operation.
  • a stop which is secured rigidly to the relay and which holds the rod in the cavity, when the armature is completely operative. Since the rod is held, the toothed member driven by the rod is also held, so that a possible small motion of the member produced by inertia is avoided.
  • FIG. 1 is a side view of a step relay with a pawl wheel to be moved stepwise, and extending parallel to the direction of length of the relay.
  • FIG. 2 is a side elevation of the arrangement shown in FIG. 1.
  • FIG. 3 is a side elevation of one of the upper plates of the armature limb, on an enlarged scale.
  • FIG. 4 is a side elevation of part of a step relay with a pawl wheel to be moved stepwise, the pawl wheel being at right angles to the longitudinal direction of the relay.
  • FIG. 5 is a plan view of the relay shown in FIG. 4.
  • FIG. 6 shows, on an enlarged scale, the upper plate of FIG. 4.
  • reference numeral 1 designates a coil comprising a core 2.
  • an L-shaped yoke 3 which is provided with a threaded end 4 to secure the relay.
  • An armature 5, which has two limbs 6 and 7, is pivotally secured to the yoke 3.
  • the limb 6 is loaded by a spring 8, so that this limb is urged against the yoke 3.
  • This spring 8 may be adjustable in known manner, for example by means of a nut.
  • FIG. 1 and 2 show a pawl wheel 9 with teeth 12, which wheel is secured to a shaft 11 by means of a shoulder 10.
  • the pawl wheel 9 extends parallel to the longitudinal direction of the relay and is to be moved stepwise in the direction of the arrow (FIG. 2) by periodical energization of the relay.
  • the end of the limb 7, remote from the pivot point, is provided with a plate 13, which has a recess 14 shaped in the form of a trapezium with two right angles the longer side of the trapezium, i.e. the base, being at right angles to the side edges of the limb.
  • the resilient rod 16 is secured to the limb 7, this rod 16 extends through the recessed plate 13.
  • the rod 16 lies in a cavity 17, when the relay is out of operation, this cavity being provided at the point Where the oblique side and the short side of the trapezium opposite the base coincide.
  • the arrangement of the pawl wheel 9 relative to the rod 16 is such that, when the relay is not energized, the end of the rod lies just outside the circumference of the pawl wheel 9, whereas, when the relay is energized, the resilient rod is urged against one of the radial flat tooth surfaces, the movement being performed approximately along the tangent to the pitch circle.
  • the pawl wheel 9 is turned by one tooth.
  • a stop 18 urges the rod 16 rigidly into the cavity 17 at the end of the operational stroke, so that the pawl wheel 9 is held in place and a further (spontaneous) rotation is not possible.
  • the relay When the relay is deenergn'zed the armature returns into the initial position under the action of the spring 8; the rod, however, which lags slightly owing to inertia is capable of sliding along the oblique tooth surface of the tooth 12, since this rod is now clear of the cavity 17, until it is clear of the oblique tooth surface.
  • the mass of the rod 16 is very small; during the forward movement, while the pawl wheel is turned, the rod is supported near its free end and an adequate force can be exerted on the pawl wheel.
  • the vertical width of the aperture 14 allows the plate 13 to assume inoperative position without engaging the rod and the longitudinal length of the aperture 14 allows the rod to slip past a pawl tooth without engaging the plate 13. Once the rod is free of the pawl wheel 9 the trapezium aperture quickly directs the rod into recess 17 of the aperture 14.
  • FIGS. 4, 5 and 6 show the pawl wheel 9 at right angles to the longitudinal direction of the relay.
  • the limb 7 of the armature 5 is provided with a U-shaped plate 19, which is rigidly secured to the limb 7, and of which one limb 20 has a cavity 21, which lies at the point of intersection of the limb boundary and an oblique surface.
  • the free end of the spring 16 lies in this cavity, when the relay is out of operation.
  • a relay moving a pawl wheel in a stepwise manner comprising a metal core, a coil surrounding said core, an L-shaped yoke secured to said core, an armature, means pivotally fixing said armataure to said yoke, said armature including two legs located substantially at right angles to one another, spring means biasing one of said legs in a 4 direction toward said core, a thin resilient rod secured at one end to the other of said legs, and means containing the other end of said rod whereby the latter may be moved in all directions to a limited extent, the other end of said rod being adapted to selectively engage one of the teeth of said pawl wheel.
  • a relay moving a pawl wheel in a stepwise manner comprising a metal core, a coil surrounding said core, an L-shaped yoke secured to said core, an armature, means pivotally fixing said armature to said yoke, said armature including two legs located substantially at right angles to one another, spring means biasing one of said legs in a direction toward said core, a thin resilient rod secured at one end to the other of said legs, and a plate secured at the other end of the rod and located substantially perpendicular to said rod, said plate having a trapezoidal opening therein, a recess in said opening, the free end of said rod projecting through said opening and being positioned in said recess when said relay is in the inoperative condition and selectively engaging one of the teeth of said pawl wheel in the operative condition thereof.
  • a relay moving a pawl wheel in a stepwise manner comprising a metal core, a coil surrounding said core, an L-shaped yoke secured to said core, an armature, means pivotally fixing said armature to said yoke, said armature including two legs located substantially at right angles to one another, spring means biasing one of said legs in a direction toward said core, a thin resilient rod secured at one end to the other of said legs, and a U-shaped plate having one leg secured to the other end of said rod and the bight portion extending substantially perpendicularly to said rod, said other leg having a recess therein, the free end of said rod being adapted to selectively engage one of the teeth of said pawl wheel in the operative condition thereof and being positioned in said recess when said relay is in the inoperative condition.
  • a relay as claimed in claim 1 further comprising a stop rigidly secured to said relay which holds said rod when said armature is completely lifted.
  • a relay as claimed in claim 1 wherein the direction of movement of said rod extends approximately along the tangent to the pitch circle of said pawl wheel, and when the relay is in rest position said rod lies spaced from the outer circumference of said pawl wheel.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnets (AREA)
  • Breakers (AREA)
US792894A 1958-02-13 1959-02-12 Relay for stepwise movement of a toothed member Expired - Lifetime US2994227A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL224901 1958-02-13

Publications (1)

Publication Number Publication Date
US2994227A true US2994227A (en) 1961-08-01

Family

ID=19751122

Family Applications (1)

Application Number Title Priority Date Filing Date
US792894A Expired - Lifetime US2994227A (en) 1958-02-13 1959-02-12 Relay for stepwise movement of a toothed member

Country Status (6)

Country Link
US (1) US2994227A (de)
BE (1) BE575643A (de)
CH (1) CH367895A (de)
FR (1) FR1225030A (de)
GB (1) GB913814A (de)
NL (2) NL224901A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3095751A (en) * 1960-08-05 1963-07-02 George W Rapp High ratio double action stepper unit
US3175408A (en) * 1962-10-09 1965-03-30 Wallace B Martin Ratchet drive mechanism
US3469462A (en) * 1966-10-17 1969-09-30 Straumann Inst Ag Pawl and ratchet mechanism driven by vibratory means
US3472087A (en) * 1967-03-23 1969-10-14 Klaus Johannes Ylinen Reversible stepping mechanisms

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3126038A1 (de) * 1981-07-02 1983-01-20 Philips Patentverwaltung Gmbh, 2000 Hamburg Vorrichtung zum drehen einer in einem evakuierten glasrohr eingeschlossenen sonnenschutzlamelle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1047810A (en) * 1910-08-02 1912-12-17 Frank Hope-Jones Electric time indicator and alarm.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1047810A (en) * 1910-08-02 1912-12-17 Frank Hope-Jones Electric time indicator and alarm.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3095751A (en) * 1960-08-05 1963-07-02 George W Rapp High ratio double action stepper unit
US3175408A (en) * 1962-10-09 1965-03-30 Wallace B Martin Ratchet drive mechanism
US3469462A (en) * 1966-10-17 1969-09-30 Straumann Inst Ag Pawl and ratchet mechanism driven by vibratory means
US3472087A (en) * 1967-03-23 1969-10-14 Klaus Johannes Ylinen Reversible stepping mechanisms

Also Published As

Publication number Publication date
GB913814A (en) 1962-12-28
FR1225030A (fr) 1960-06-28
NL224901A (de)
CH367895A (de) 1963-03-15
NL104315C (de)
BE575643A (fr) 1959-08-12

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