US3721782A - Triggering device for switchgear - Google Patents

Triggering device for switchgear Download PDF

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Publication number
US3721782A
US3721782A US00244385A US3721782DA US3721782A US 3721782 A US3721782 A US 3721782A US 00244385 A US00244385 A US 00244385A US 3721782D A US3721782D A US 3721782DA US 3721782 A US3721782 A US 3721782A
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US
United States
Prior art keywords
component part
unit
control unit
accordance
component
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
US00244385A
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English (en)
Inventor
M Roumagnac
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 US3721782A publication Critical patent/US3721782A/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
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H01H21/24—Operating parts, e.g. handle biased to return to normal position upon removal of operating force
    • H01H21/28—Operating parts, e.g. handle biased to return to normal position upon removal of operating force 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
    • H01H21/285—Operating parts, e.g. handle biased to return to normal position upon removal of operating force 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 having an operating arm actuated by the movement of the body and mounted on an axis converting its rotating movement into a rectilinear switch activating movement
    • 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

  • the invention relates to a triggering device for switchgear of the type used to control the travel of moving parts in machinery; in particular, the device covered by the invention relates to a triggering device comprising an adjustable transmission unit positioned between a unit controlling the instrument, worked by the moving part to be controlled, and the contact which does the switching so that the latter is optionally done in one of two or in two opposite directions of movement of the moving part.
  • Instruments are already known the construction of which makes it possible to select the modes of operation just mentioned, by means of a set of interchangeable cams or else by making use of a shaft fitted with cams which are brought into operation by axial movement of the shaft.
  • the aim of the invention is to provide a triggering device for switchgear wherein the control unit worked by a moving part is an oscillating shaft cooperating with an adjustable transmission unit connected to the contact, and wherein the adjustable transmission unit is accessible from the outside without dismantling to enable it to assume several easily recognizable positions, at the same time keeping the dimensions the same as those of non-adjustable devices.
  • the transmission unit includes at least two separate component parts, the first of which cooperates with the control unit and the second of which communicates with the outside, that the two component parts are connected to each other by a coupling which allows the first component part to move towards the contact without taking the second with it, while the second component part enables the respective positions of the cooperating portions of the control unit and the first component part to be altered without producing any movement of the latter towards the contact, a braking unit being interposed between the control unit and the second component part to brake the latter when the control unit is not in the at rest" position.
  • the two component parts are positioned coaxially one inside the other and are subjected to the effect of a common sprung unit which applies the second component part against a fixed portion of the instrument box, and the first component part against a portion of the control unit.
  • FIG. 1 a perspective view of the switchgear
  • FIG. 2 a view from above of an instrument, slightly modified to show the access to the selector wheel and the position of the section planes,
  • FIG. 5 a view from above of two of the component parts making up the unit which transmits the movement
  • FIG. 7 a section along XX of a second variant.
  • the switchgear as a whole which can be seen in FIG. 1, takes the form of a main body 1 on which a head 4 is fixed which, for manufacturing reasons, is made removable by means of screws 23, see FIG. 2.
  • a portion of a control unit 2 protrudes from this head; this may be a cylindrical shaft, and on it is fixed a control lever 3 which moves in a plane when it is subjected to the effect of a moving part which moves in said plane, in two opposite directions.
  • the mode of switching can be altered, i.e., the contact can be worked in one of the two directions, or in both the directions just mentioned.
  • FIG. 2 also shows the main component parts which have just been described, from a slightly different angle, which shows the use of reference marks 21 and 22 which, when they coincide, unmistakably indicate the direction of movement of the moving part which controls the switching in a given mode of operation.
  • FIG. 2 shows, e.g., that the contact is set for both directions of movement of the moving part.
  • control unit 2 takes the general form of a shaft articulated in the head 4 and which can oscillate on either side of a median position.
  • the push-button 12 of the contact to be triggered is in the main body 1.
  • the transmission unit is the one which has to make the connection between the shaft 2 and the contact, at the same time allowing the mode of operation to be selected.
  • This transmission unit is in fact made up of three cylindrical bodies 11, 13 and 7 encased in one another. Of these component parts, the first presses the top of its flange 15 against a flattened portion of the shaft, by means of a spring 14 which pushes back a return unit 13 an intermediate portion 18 of which acts on the bottom part of said flange.
  • the spring 14 tends to push back the last component part 7 which takes the form of a bowl fitted with a wheel 5 part of which communicates with the outside by means of an opening 19 in the head 4.
  • this wheel bears a reference mark 21 which works in conjunction with a reference mark 22 on the head 4.
  • the component part 7 is articulated in a housing in the main body 1 and bears on the top surface 20.
  • FIGS. 3, 4 and 5 where the first component part 11 and its flange 15 can be seen.
  • the latter is, in fact, obtained from a ring with part of its circumference cut away, which gives its top surface a compass of 180.
  • This flange is housed in a clearance made in the top part of the return unit so as only to leave a top portion 16 the compass of which is such that any relative angular movement of the two component parts 13 and 11 is prevented.
  • FIG. 3 clearly shows that the top surface of the flange 15 is on the same level as the top surface of the portion 16. It can therefore be said that these two surfaces bear simultaneously on the flattened portion of the shaft 2, which is limited by two edges 8 and 6 forming two symmetrical cams.
  • FIG. 5 shows in dots and dashes the respective positions that may be assumed by said edges when the transmission unit as a whole is in one of four possible positions, positions 8, 8' and 6, 6' corresponding to the mode of operation shown in FIGS. 3 and 4.
  • openings 19 extend down to the base 20 on which the head 4 is fixed.
  • the marking of the modes of operation is provided by making the reference marks 21 and 22 coincide, while the position can be securely held by means of a ratchet mechanism such as the one made up of the ball 33, the spring 32 and several housings such as 30 shown in FIG. 7.
  • This automatic locking which is one of the advantages of the device, can be strengthened by suitable treatment of the bearing surface of the wheel 5 or that 20 of the body.
  • this can be complemented by mechanical locking of the type represented in FIG. 7 by the ball 34 and the cavity 31. This latter device simultaneously ratches and locks.
  • auxiliary rotary unit 26 which comprises a screwdriver slot 27 and a conic toothed wheel 25 engaging with a second toothed wheel 24 borne by the component part 11.
  • This auxiliary unit is accessible through an opening 40 in the head 4.
  • This component part 26, provided with a suitable opening, could just as well be positioned on the same side as the shaft part 2 bearing the control lever 3.
  • Triggering device for switchgear wherein the control unit worked by a moving part is an oscillating shaft cooperating with an adjustable transmission unit connected to the contact and wherein the adjustable transmission unit is accessible from outside so that switching is done optionally in one of two or in the two opposite directions of movement of the moving part, characterized in that the transmission unit comprises at least two component parts 11, 7 of which the first ll cooperates with the control unit 2 and of which the second 7 communicates with the outside through an opening 19, 40 in the instrument, the two component parts being connected to each other by a coupling 10, 9 allowing the first component part to move towards the contact 12 without taking the second with it, while the second component part 7 allows the respective positions of the cooperating parts 8, 6, 15 of the control unit and the first component part to be altered without causing the latter to move towards the contact 12, a unit (14 or 32 respectively being interposed between the control unit and the second component part to brake the latter when the control unit is not in the at rest position.
  • Device in accordance with claim 2 characterized in that the fixed portion of the box is represented by the surface 20 of the main body 1 containing the contact 12 on which a removable head 4 is mounted, comprising the control 2, transmission 11, 13, 7 and braking 14, 32, 33 units.
  • the head 4 comprises three openings 19 extending down to the fixing surface 20 and has a bearing surface 41 which limits the axial movement of the second component part 7 and provides a seal.
  • braking unit is a spring 32 positioned between two balls 34, 33 respectively cooperating with cavities 31, 30 in the control unit 2 and the second component part 7.

Landscapes

  • Mechanisms For Operating Contacts (AREA)
  • Mechanical Control Devices (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanical Operated Clutches (AREA)
  • Switches With Compound Operations (AREA)
US00244385A 1971-04-21 1972-04-17 Triggering device for switchgear Expired - Lifetime US3721782A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7114119A FR2134814A5 (it) 1971-04-21 1971-04-21

Publications (1)

Publication Number Publication Date
US3721782A true US3721782A (en) 1973-03-20

Family

ID=9075667

Family Applications (1)

Application Number Title Priority Date Filing Date
US00244385A Expired - Lifetime US3721782A (en) 1971-04-21 1972-04-17 Triggering device for switchgear

Country Status (19)

Country Link
US (1) US3721782A (it)
AT (1) AT318747B (it)
AU (1) AU468208B2 (it)
BE (1) BE781963A (it)
BR (1) BR7202377D0 (it)
CA (1) CA970014A (it)
CH (1) CH557084A (it)
CS (1) CS168586B2 (it)
DK (1) DK139739C (it)
ES (1) ES401971A1 (it)
FR (1) FR2134814A5 (it)
GB (1) GB1391991A (it)
IT (1) IT953690B (it)
NL (1) NL7205373A (it)
NO (1) NO135803C (it)
PL (1) PL71176B1 (it)
SE (1) SE380369B (it)
SU (1) SU464143A3 (it)
TR (1) TR17095A (it)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054293A1 (en) * 1980-12-15 1982-06-23 Omron Tateisi Electronics Co. Switch assembly
US4847453A (en) * 1987-11-03 1989-07-11 Square D Company Limit switch with actuator
US9552935B2 (en) 2013-10-04 2017-01-24 Schneider Electric Industries Sas Limit switch

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1042507B (it) * 1975-09-12 1980-01-30 Cge Spa Dispositivo di azionamento per un apparecchio di commutazione in particolare un interruttore di fine corsa
JPS5824887B2 (ja) * 1978-03-31 1983-05-24 オムロン株式会社 リミツトスイツチ
FR2519438B1 (fr) * 1982-01-07 1985-10-04 Crouzet Sa Dispositif d'actionnement a commande rotative
GB2135517A (en) * 1983-02-15 1984-08-30 Crabtree Electrical Ind Ltd Operating mechanism for limit switches
DE19902910C2 (de) * 1999-01-26 2002-10-24 Euchner Gmbh & Co Vorrichtung zum Schalten einer elektrischen Verbindung, insbesondere Schwenkhebelschalter
FR3010826B1 (fr) 2013-09-19 2017-04-21 Schneider Electric Ind Sas Interrupteur de position
CN108400031B (zh) * 2017-02-06 2021-12-21 霍尼韦尔国际公司 限位开关复位键
JP6866862B2 (ja) * 2018-03-14 2021-04-28 オムロン株式会社 リミットスイッチ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3252345A (en) * 1963-08-02 1966-05-24 Robertshaw Controls Co Actuating mechanism and parts therefor or the like
US3512422A (en) * 1968-05-31 1970-05-19 Alkon Products Corp Rotary actuator
US3546954A (en) * 1966-07-22 1970-12-15 Buchanan Electrical Prod Corp Device for actuating a limit control element

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3252345A (en) * 1963-08-02 1966-05-24 Robertshaw Controls Co Actuating mechanism and parts therefor or the like
US3546954A (en) * 1966-07-22 1970-12-15 Buchanan Electrical Prod Corp Device for actuating a limit control element
US3512422A (en) * 1968-05-31 1970-05-19 Alkon Products Corp Rotary actuator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054293A1 (en) * 1980-12-15 1982-06-23 Omron Tateisi Electronics Co. Switch assembly
US4510355A (en) * 1980-12-15 1985-04-09 Omron Tateisi Electronics Co. Rotary shaft - push button switch anchor assembly
US4847453A (en) * 1987-11-03 1989-07-11 Square D Company Limit switch with actuator
US9552935B2 (en) 2013-10-04 2017-01-24 Schneider Electric Industries Sas Limit switch

Also Published As

Publication number Publication date
DK139739C (da) 1979-09-17
DE2218795B2 (de) 1977-01-13
BE781963A (fr) 1972-07-31
AU4133272A (en) 1973-10-25
ES401971A1 (es) 1975-03-01
AT318747B (de) 1974-11-11
SU464143A3 (ru) 1975-03-15
GB1391991A (en) 1975-04-23
CH557084A (fr) 1974-12-13
BR7202377D0 (pt) 1973-06-14
DE2218795A1 (de) 1972-11-09
NO135803B (it) 1977-02-21
FR2134814A5 (it) 1972-12-08
IT953690B (it) 1973-08-10
AU468208B2 (en) 1973-10-25
NL7205373A (it) 1972-10-24
SE380369B (sv) 1975-11-03
CS168586B2 (it) 1976-06-29
NO135803C (it) 1977-06-08
TR17095A (tr) 1974-04-25
CA970014A (en) 1975-06-24
PL71176B1 (it) 1974-04-30
DK139739B (da) 1979-04-02

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