US3833778A - Bellows-type time delay device for retarded switch - Google Patents

Bellows-type time delay device for retarded switch Download PDF

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Publication number
US3833778A
US3833778A US00313104A US31310472A US3833778A US 3833778 A US3833778 A US 3833778A US 00313104 A US00313104 A US 00313104A US 31310472 A US31310472 A US 31310472A US 3833778 A US3833778 A US 3833778A
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United States
Prior art keywords
holder
bellows
contacts
contact
contactor
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Expired - Lifetime
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US00313104A
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English (en)
Inventor
G Faffari
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Telemecanique SA
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La Telemecanique Electrique SA
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    • 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
    • H01H43/285—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 adjusting the time interval by means of an adjustable orifice, e.g. needle valve
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/32—Latching movable parts mechanically

Definitions

  • This timing device comprises a movable contact-holder pivotally mounted on two pivots [30]
  • Foreign Application Priority Data disposed on the internal surface of the shell of the de- D c 8 1971 France 71 44021 vice, on either side of the bellows, the shape of the e holder, ring or fork, being such that it surrounds at least partially the bellows when the latter is in exi" 53 5; panded configuration: as a result, the dimension of the [58] Fie'ld R 83 C 83 device, parallel to the direction of displacement of ghe 335/59 60 61; 337/320 bellows, 1S reduced.
  • the device further comprises a flexibly mounted [5 R f n Cited mechanical coupling component which enables UNITED STATES PATENTS dove-tail coupling with the mobile unit of an eventual 1,867,7ll 7/1932 Raney 200/83 C relay. 3,229,054 1/1966 Finnegan et al. 200 33 R 4 Claims, 4 Drawing Figures 7 av 25; Z24
  • the invention relates to a timing device for electric contacts whose closing or opening can be delayed.
  • Such devices are in particular applicable to the removable blocks which comprise auxiliary contacts, and are capable of being fixed on to a contactor or a relay by means of a coupling component which allows the transmission of movement between said contactor and the relevant components contained in the blocks.
  • timing devices containing the above units are known, but these are generally positioned either between the coupling component and the bellows of the timing unit or next to the latter.
  • the result is an increase in the transversal or longitudinal dimensions, which were only small when the contactors were themselves large; the reduction of the size of the latter has nevertheless complicated the construction of known timing devices inasmuch as it is no longer possible to give the contact parts the necessary travel and the pivoting of the mobile parts becomes faulty due to the short length of or the small space between the pivoting components of the moving parts.
  • the present invention therefore proposes to supply a timing device for a removable block of small-sized auxiliary contacts whose construction and mounting is very simple while enabling wide movements and satisfactory guiding.
  • this result is achieved due to the fact that the contacts are positioned on a pivotal component whose bearings are positioned on either side of the bellows and in the immediate vicinity thereof.
  • the pivotal component takes the form of a ring through which the bellows is inserted and on which the mobile contacts are fixed at the ends of a dimaeter.
  • FIGS. 1 and 2 show an elevation view of a contact timing device when the contactor with which it is associated is de-excited;
  • FIG. 3 shows a partial view from below
  • FIG. 4 shows an elevation view of a contact timing device when the contactor with which it is associated is excited.
  • a timed auxiliary contact block which is fixed on the shell 14 of a contactor or a relay, and receives its movement from thelatter, bymeans of a coupling comprising, on the one hand, a dovetail 11 which forms part of the timing device, and on the other hand, a claw 12 which forms part of the mobile part 13 of the contactor.
  • the chronometer unit situated at the top of the shell 1 consists of a bellows 2 tending to dilate in the direction of the arrow F under the action of an internal spring 32, one end of which is attached to a hollow element 101, integer with the shell I, and the other end tends to force downwards the lower end of the bellow 2, by means of a valve 59 integer .with a rod 60 located inside the bellow and sliding in the hollow part of hollow element '101 (which provides a guide for the valve displacement) and with a driving plate, outside the bellow.
  • a passage or air duct 58 couples the interior of bellows 2 to a circular groove in the lower part of a disc 57, said groove being formed for example in the course of the lamination of the latter; disc 57 is placed on top of shell 1, and is integer therewith.
  • On the upper surface of disc 57 is applied the bottom of a hollow rotary knob, having a slot 56 opening into said groove, and a further slot 55 in the upper portion of the knob 3, a filter 61 being inserted in the hollow section of the knob.
  • valve 59 Upon forcing upwards the driving plate 24, against the spring 32, the valve 59 comes into the open position and the bellows becomes compressed, as shown in FIG. 2, the air being driven out rapidly, escaping through valve 59.
  • spring 32 controls the closing of valve 59, whereby the lower part of the bellows is pushed downwards; however, the downward movement of the bellow is slow, due to both the laminating of the incoming air and the length of the passage way, the air being fed to the bellow only through the labyrinth built up by the slot 55, the filter 61, the slot 55, the laminated groove (not referenced) and the duct 58.
  • knob 3 settles the position of slot 56 in regard of the groove, thereby controlling the laminating of the incoming air and affording control of the necessary time for the bellow to resume the expanded shape under action of spring 32.
  • the contact unit comprises a working contact-holder 4 carrying contacts 6 and 7, and stationary contacting studs, and 51.
  • the contact holder shown in the drawings consists of a ring, which rocks around pivots 5 and 5' (shown FIG. 3); the ring is positioned around the bellows, pivots 5 and 5' being mounted on the inside of shell 1 as shown FIG. 3. The reason for this arrangement will be explained elsewhere.
  • FIG. 1 The whole device in FIG. 1 is shown in the at rest or off state, i.e., the contactor is de-energized, the bellows is expanded and the contact-holder 4 is in its inoperative position. In this position, the contact 7. is applied against the conducting stud 50, and the contact 6 is separated from stud 51.
  • the dovetail 1 1 forms part of a mobile control slide 10 in the shape of a T whose arms are shown at 15 and 16.
  • This slide is suspended by two articulations l8 and 17 which also form part of two levers l9 and 20 respectively. These levers are themselves pivoted in the shell 1 by the fulcrums 21 and 22 respectively.
  • control slide 10 is flexibly mounted and the dovetail 11 has two degrees of freedom which enable it easily to align itself with the claw 12 at the time of coupling.
  • This coupling is achieved by a relative movement of the two shells l and 14, which is perpendicular to the'plane of the figure.
  • a lock 27 pivoted on the shell through a pivot 28 and biased by a spring 26, has a lip 30 designed to cooperate with a rim 8 integral with the contact-holder. In the position shown in FIG. 1, this look is inactive and its end 29 is resting on the plate 24 of the valve.
  • An operating push-button 33 projecting from the shell near the adjusting knob 3 is extended near the bottom by a stop 35 which projects slightly from the lower face; a return spring 34 tends to apply lightly a portion of this stop against the bottom of the arm 16 of the control slide 10.
  • FIG. 3 shows the different levers and mobile parts in different vertical planes.
  • FIG. 1 shows the pivots or articulations 17, 18, 21, 22 and 28 in different planes, these are in reality positioned substantially in the same plane, which corresponds to that in FIG. 3.
  • This ring is pivoted by two bearings 5, 5 whichare diametrically opposite each other and consequently provide excellent guiding for the contact-holder 4.
  • the contacts carried by the ring, shown at 6 and 7 are also placed at the ends of a diameter of the ring, which ensures good equilibration of the contact-holder and gives the contacts a large travel for a specific rotation.
  • the contact-holder 4 could merely take the form of a fork the ends of which would carry pivots the essential feature being that the bellows traverses the contactholder, the latter being pivotally mounted on two bearings or pivots integer with the shell, located on either side of thebellows, the virtual axis joining the pivots crossing said bellows, at least when the latter is expanded position, this feature enabling achieving the desired compactness of the assembly.
  • the mobile slide is drawn in the direction of the arrow F as shown in FIG. 2.
  • This position corresponds to the active position of the contact-holder.
  • the control slide immediately goes back to its position in FIG. 1, but the bottom part of the bellows driven by the valve 59 takes some time to resume its at rest" state; in its downward travel, it strikes the arm 29 of the lock thus releasing the contact-holder under the action of the spring. Contacts 6 and 7 are thus commuted with some delay.
  • the push-button 33 makes it possible to simulate the working of the contactor. Since, moreover, it is not connected in the direction of the arrow F with the control slide, its manipulation cannot put the coupling 12 and 11 out of alignment. I
  • the push-rod 42 comprising the coupling dovetail l 1 is guided vertically with play in translation and has two bosses 40 and 41; the first of these bosses serves to set the contact-holder and the second serves to set the time-switch, when the contactor is de-excited.
  • the bellows expands and as in the previous case causes the unlocking of the lock 27 thus releasing the contactholder.
  • the same contact-holder 4 as the one used and described in the previous example is applied here with the same advantages for the sake of clarity, only those features are shown in FIG. 4, which differ from those of the embodiment shown in FIG. 1. It is to be understood that, although not shown in FIG. 4, the valve 59, the stationary contacting studs 50, the rotary knob 3, may be embodied as shown in FIG. 1.
  • Timing device for delaying the breaking and/or the closing of auxiliary contacts, capable of being removably coupled to a relay or contactor having a movable part, and comprising:
  • a movable contact holder carrying at least one contact, said holder being capable of taking any one of two positions, respectively corresponding to the breaking and the closing of said contacts;
  • locking means securing said holder in the position where the contacts areclosed, against the action of a spring which tends to place said holder in the position where the contacts are off or vice-versa;
  • said contact-holder (4) is pivotally .mounted on pivots in said shell, disposed on either side of said bellows, said holder having such a shape that it surrounds at least partially the bellows.
  • a timing device comprising two stationary contacts and two contacts on said con-' tact-holder, wherein said holder is ring-shaped, said contacts (6, 7) on said holder being disposed at the retransmission means (10, 19, 20) is coupled to said bellows and to said holder only along one direction (that of arrow F), thereby having a transverse liberty for facilitating the coupling with the movable part (12) of the contactor or relay.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Push-Button Switches (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Switches With Compound Operations (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Switch Cases, Indication, And Locking (AREA)
US00313104A 1971-12-08 1972-12-07 Bellows-type time delay device for retarded switch Expired - Lifetime US3833778A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7144021A FR2162271B1 (da) 1971-12-08 1971-12-08

Publications (1)

Publication Number Publication Date
US3833778A true US3833778A (en) 1974-09-03

Family

ID=9087128

Family Applications (1)

Application Number Title Priority Date Filing Date
US00313104A Expired - Lifetime US3833778A (en) 1971-12-08 1972-12-07 Bellows-type time delay device for retarded switch

Country Status (13)

Country Link
US (1) US3833778A (da)
AT (1) AT317345B (da)
BE (1) BE792156A (da)
BR (1) BR7208703D0 (da)
CA (1) CA970010A (da)
CH (1) CH583965A5 (da)
DE (1) DE2260270C3 (da)
DK (1) DK143672C (da)
ES (1) ES409405A1 (da)
FR (1) FR2162271B1 (da)
GB (1) GB1405605A (da)
IT (1) IT971712B (da)
NL (1) NL7216516A (da)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2914720A1 (de) * 1978-04-12 1979-10-18 Allen Bradley Co Zeitverzoegert arbeitender schalterbetaetigungsmechanismus
US20120090971A1 (en) * 2009-03-25 2012-04-19 Logicor Limited Timing device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2915311A1 (de) * 1979-04-14 1980-10-23 Kloeckner Moeller Elektrizit Hilfsschalteranordnung mit verzoegerungsvorrichtung fuer niederspannungsschaltgeraete
FR2568717B1 (fr) * 1984-08-03 1988-08-05 Telemecanique Electrique Dispositif de temporisation a contacts a fonctionnement decale

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1867711A (en) * 1932-01-02 1932-07-19 Estel C Raney Defroster
US3229054A (en) * 1963-10-28 1966-01-11 Gen Electric Time delay switch
US3268675A (en) * 1964-10-19 1966-08-23 Furnas Electric Co Actuator for bellows type time delay switch
US3585321A (en) * 1969-05-23 1971-06-15 Arrow Hart Inc Pneumatic time delay switch with improved auxiliary manual switch actuator means

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE395781C (de) * 1922-08-24 1924-05-23 Paul Meyer Akt Ges Dr Elektrischer UEberstromschalter mit vom Strom unabhaengiger Zeitausloesung
FR1603941A (da) * 1968-12-31 1971-06-14

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1867711A (en) * 1932-01-02 1932-07-19 Estel C Raney Defroster
US3229054A (en) * 1963-10-28 1966-01-11 Gen Electric Time delay switch
US3268675A (en) * 1964-10-19 1966-08-23 Furnas Electric Co Actuator for bellows type time delay switch
US3585321A (en) * 1969-05-23 1971-06-15 Arrow Hart Inc Pneumatic time delay switch with improved auxiliary manual switch actuator means

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2914720A1 (de) * 1978-04-12 1979-10-18 Allen Bradley Co Zeitverzoegert arbeitender schalterbetaetigungsmechanismus
FR2423048A1 (fr) * 1978-04-12 1979-11-09 Allen Bradley Co Mecanisme d'interrupteur temporise
US4181829A (en) * 1978-04-12 1980-01-01 Allen-Bradley Company Time delay switch actuating mechanism
US20120090971A1 (en) * 2009-03-25 2012-04-19 Logicor Limited Timing device

Also Published As

Publication number Publication date
DK143672B (da) 1981-09-21
CA970010A (en) 1975-06-24
DE2260270B2 (de) 1977-12-22
DK143672C (da) 1982-03-01
NL7216516A (da) 1973-06-13
BR7208703D0 (pt) 1973-09-25
FR2162271A1 (da) 1973-07-20
AT317345B (de) 1974-08-26
DE2260270A1 (de) 1973-08-02
DE2260270C3 (de) 1978-09-07
CH583965A5 (da) 1977-01-14
ES409405A1 (es) 1975-12-16
BE792156A (fr) 1973-03-16
FR2162271B1 (da) 1974-06-07
IT971712B (it) 1974-05-10
GB1405605A (en) 1975-09-10

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