US3203271A - Rocking device for a time-delay relay - Google Patents

Rocking device for a time-delay relay Download PDF

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Publication number
US3203271A
US3203271A US301369A US30136963A US3203271A US 3203271 A US3203271 A US 3203271A US 301369 A US301369 A US 301369A US 30136963 A US30136963 A US 30136963A US 3203271 A US3203271 A US 3203271A
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US
United States
Prior art keywords
arm
rocker
time
push
support
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
US301369A
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English (en)
Inventor
Faffart Andre Georges
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.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique SA
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 La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Application granted granted Critical
Publication of US3203271A publication Critical patent/US3203271A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F1/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
    • H01H43/24—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a non-rotatable moving part
    • H01H43/28—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a non-rotatable moving part the actuation being produced by a part, the speed of which is controlled by fluid-pressure means, e.g. by piston and cylinder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/86—Means for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts
    • H01H50/88—Mechanical means, e.g. dash-pot
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H7/00—Devices for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts
    • H01H7/02—Devices for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts with fluid timing means
    • 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
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20582—Levers

Definitions

  • the present invention relates to a rocking device for a time-delay relay, constituted by an actuating device such as an electro-magnct and an electric switch which alternatively breaks or makes contacts a certain time after the actuating system begins to operate.
  • the invention is particularly but not exclusively applied to an apparatus provided with a pneumatic time lag of the type described in the US. patent application 152,224 of November 14, 1961, now Patent No. 3,153,- 706 by the same applicant.-
  • the device in accordance with the invention is essentially characterized by the fact that it comprises, in combination:
  • An actuating unit and a time-delay unit mounted side by side so that their push-rods move in parallel directions;
  • a rocking device constituted by a rocking lever, the two extremities of which are capable of coming respectively into cont-act with the two push-rods above-mentioned;
  • a pivotal shaft for the said rocking lever of which one of the extremities forming a pivot pin is adapted to be supported in a fixed bearing, while the other extremity is carried by a rotating support capable of pivoting about a second shaft parallel to the rocking lever of the rocker device;
  • the pivotal shaft of the rocker-arm of the rocking device comprises a screw head and a threaded portion fitted into a corresponding threaded portion of the rotating support, an abutment member being provided on the said shafit in order to bring the rocker for mounting on 3,203,271 Patented Aug. 31, 1965 arm closer to or to move it away from the rotating support by tightening-up or slackening-off the screw, and in consequence to fix together the two members by means of corresponding recesses and projections with which they are respectively provided or, on the contrary, to separate the said members from each other.
  • V is adapted to receive it is cut-out in the form of a V.
  • the part forming the rotating support is a moulded piece in the torm of a stirrup, the pivot pins of which rest in open hooks.
  • the elastic means which urges the rotating supportrocking device assembly against the push-rods of the actuating and time-delay units is a compression spring.
  • FIG. 1 is a view in elevation with partial cross-section of a device according to the invention permitting the cycle of operation of a time delay relay to be reversed;
  • FIG. 2 is a rear view with partial crosssection of this device, the rocking device proper being shown in the position in which it is free to pivot on its rotating support;
  • FIG. 3 is a transverse section made along the line III-4H of FIG. 2, the rocking device being shown in the position in which it cannot pivot on its rotating support;
  • FIG. 4 is a transverse section made along the line IVIV of FIG. 2, the rocking device being in this case shown in the position in which it is free to pivot on its rotating support;
  • FIG. 5 is a view in elevation with partial cross-section, showing the rotating support of the device.
  • the reference 1 indicates the baseplate which serves for fixing the whole unit, and on which are mounted side by side two units designated by the general references 2 and 3.
  • One of the units, the unit 2 in the drawings, is an actuating unit such for example as an electromagnet of any known type which, by the efle'ct of the operation order which is receives, pushes a push-rod 4 towards the base of the device.
  • the other unit 3 is a time-delay device of any particular known type, such for example as a pneumatic time-lag which is provided with a push-rod 5 arranged parallel to the rod 4 of the actuating unit, and which is capable of returning elastically and slowly to its initial position after having been moved.
  • the device proper for the operation of the time-delay relay comprises essentially:
  • a rocking device constituted by a rocker-arm 6 which is adapted to pivot on a shaft 7, and the two extremi-ties 6 6,; can respectively come into contact with the push-rod 4 of the actuating unit 2 and with a small transfer rod 5,, acting on the push-rod 5 of the timedelay unit 3.
  • a rotating support designated by the general reference 8 (see more particularly lF-IG. 5), in which is mounted the extremity 7 A of the shafit 7 of the rocking device.
  • the support 8 is provide with two conical studs 9 9 which are pivo-tally mounted in bearings 10 10 of a supporting member .10 which is fixed to the base 1 and which will be dealt with in more detail later.
  • the pivotal axis XX of the rotating support 8 is parallel to the rocker-arm 6 of the rocking device;
  • one of the two above-mentioned members for example the rocker-arm 6, is provided with two conical studs 12 12 intended to be engaged in corresponding recesses 13 13 formed in the other member, in this case the pivoting support 8.
  • the assembly comprising the support 8 and the rockerarm 6 can only pivot about the axis XX it being noted that a spring 14, respectively supported on the fixed support and on a shoulder of the pivotal support 8, urges the assembly in the direction of the arrow F (FIG. 3) and causes the extremities 6 and 6 of the rockerarm 6 to be applied against the push-rods 4 and 5 On the other hand, if by screwing the portion 7 A of the shaft 7 into the tapped portion 8 the rocking device is moved farther away from the pivotal support 8, the rocker-arm 6, as shown in FIGS. 2 and 4, is then free to pivot about its shaft 7 in the directions F or F (FIG. 1).
  • the free extremity 7 of the shaft 7 is of conical shape and is located opposite a recess 15 of V-shape, cut-out in a shoulder 10 of the fixed supporting member 10.
  • time-delay switch 3 changes over its contacts a certain time after the excitation of the electro-magnet and in consequence after the closure of its armature, or on the other hand the switch changes over its contacts a certain time after the de-excitation of the electro-magnet and thus after the opening of its armature.
  • the first method of operation is obtained by fixing the rocking device 6 to its pivotal support 8.
  • the whole assembly occupies the position shown in FIG. 3, that is to say, under the action of the spring 14, the extremity 6 of the rocker-arm 6 acts through the intermediary of the rod 5 to maintain the push-rod 5 of the time-delay unit 3 in the pushed-in position, which means that the latter is ready to operate.
  • the push-rod 4 is also in the depressed position.
  • the second form of operation referred to above is obtained, on the contrary, by separating the rocking device 6 from its pivotal support 8.
  • the pushrod 5 of the time-delay unit 2 is held in the depressed position by the extremity 6 of the rocker-arm 6, the other extremity 6 of which has previously been pushed back in the direction of the arrow F (FIG. 1) by the push-rod 4 of the actuating unit 2, the electro-magnet of which is then excited.
  • the member 8 forming the pivotal support is preferably but not necessarily constituted by a part moulded to the shape of a stirrup, the pivot pins 9 9 of which rest in open hooks 10 10 the spring 14 being held in position on the fixed support 10 by a movable arm 16 provided with a boss and two hooked portions which automatically hold it in position, by means of which the assembly of the parts can be taken apart and re-assembled without the use of any tool.
  • the extremity 7 of the shaft 7 may be cylindrical and may be applied in a simple round bore.
  • the arrangement in the form of a punch in a V-shaped recess is preferable in that when the rocking device is separated from its rotating support, that is to say when there is a reversal of the movements of the two parts, this arrangement permits a slight additional travel.
  • the electro-magnet drives its actuating rod with force
  • the punch lifts slightly from its V-shaped seating which prevents any harmful stress on the time-delay system.
  • any other delay means with mechanical action could also be utilized, such as for example a clockwork delay device.
  • a device for the operation of a time-delay relay having an operating push-rod actuated by a driving unit having an actuating push-rod comprising in combination:
  • An actuating unit and a time-delay unit mounted side by side on a base, the operating push-rods of said actuating unit and said time-delay unit working in parallel directions;
  • a rocking device constituted by a rocker-arm pivotally mounted on a central shaft;
  • a pivotal support articulated on an axis parallel to. said rocker-arm and on which is fixed the extremity of the pivotal shaft of said rocker-arm;
  • a fixed bearing intended to serve as a support for the free extremity of said pivotal shaft of the rockerarrn, said free extremity forming a pivot pin;
  • the pivotal shaft of the rocker-arm of said rocking device comprises a threaded portion adapted to engage in a corresponding tapped portion of the pivoted support; an abutment member for retaining said rocker-arm on said pivotal shaft; recesses and corresponding projections are provided respectively on said rocker-arm and said pivotal support, whereby the rocker-arm is brought closer to said pivotal support by screwing or unscrewing the threaded portion of the pivotal shaft of the rocker-arm in the tapped portion of the pivotal support, said recesses and projections are operative to fix or release the rocker-arm with respect to said pivotal support.
  • pivotal support is a piece in the form of a stirrup the pivot pins of which rest on open hooks rigidly fixed on the base which receives the time-delay unit and the actuating unit.
  • An electro-niagnet and a time-delay relay mounted side by side on a base, the operating push-rods of said electro-magnet and said relay being adapted to Work in parallel directions;
  • a rocking device constituted by a rocker-arm
  • a pivotal shaft for said rocker-arm comprising a threaded portion engaging in a corresponding tapped portion of the pivoted support; an abutment bearing against said rocker-arm;
  • a fixed bearing in the form of a V intended to serve as a support for the free extremity of conical form of said pivotal shaft of the rocker-arm;
  • Said recesses and projections being adapted to fit one into the other and to fix together said rocker-arm and said pivoted support, or vice-versa;

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Electromagnets (AREA)
  • Valve Device For Special Equipments (AREA)
  • Basic Packing Technique (AREA)
US301369A 1962-08-28 1963-08-12 Rocking device for a time-delay relay Expired - Lifetime US3203271A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR908009A FR1339634A (fr) 1962-08-28 1962-08-28 Dispositif d'inversion du fonctionnement d'un relais temporisateur

Publications (1)

Publication Number Publication Date
US3203271A true US3203271A (en) 1965-08-31

Family

ID=8785873

Family Applications (1)

Application Number Title Priority Date Filing Date
US301369A Expired - Lifetime US3203271A (en) 1962-08-28 1963-08-12 Rocking device for a time-delay relay

Country Status (13)

Country Link
US (1) US3203271A (tr)
AT (1) AT242221B (tr)
BE (1) BE635257A (tr)
CH (1) CH405468A (tr)
DE (1) DE1231338B (tr)
DK (1) DK107628C (tr)
ES (1) ES291192A1 (tr)
FI (1) FI41669B (tr)
FR (1) FR1339634A (tr)
GB (1) GB1012544A (tr)
LU (1) LU44102A1 (tr)
NL (2) NL297214A (tr)
SE (1) SE302796B (tr)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
LU44102A1 (tr) 1964-01-22
NL297214A (tr)
NL122698C (tr)
BE635257A (tr)
GB1012544A (en) 1965-12-08
FR1339634A (fr) 1963-10-11
DE1231338B (de) 1966-12-29
AT242221B (de) 1965-09-10
ES291192A1 (es) 1964-01-01
DK107628C (da) 1967-06-19
SE302796B (tr) 1968-08-05
FI41669B (tr) 1969-09-30
CH405468A (fr) 1966-01-15

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