US3602673A - Locking mechanism especially for the control of electrical disconnection apparatuses - Google Patents

Locking mechanism especially for the control of electrical disconnection apparatuses Download PDF

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Publication number
US3602673A
US3602673A US29582A US3602673DA US3602673A US 3602673 A US3602673 A US 3602673A US 29582 A US29582 A US 29582A US 3602673D A US3602673D A US 3602673DA US 3602673 A US3602673 A US 3602673A
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US
United States
Prior art keywords
shaft
control piece
lever
window
guide
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
US29582A
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English (en)
Inventor
Jean Morin
Gerard Desperrier
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.)
Societe dAppareillage Electrique SAPAREL SA
Original Assignee
Societe dAppareillage Electrique SAPAREL 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 Societe dAppareillage Electrique SAPAREL SA filed Critical Societe dAppareillage Electrique SAPAREL SA
Application granted granted Critical
Publication of US3602673A publication Critical patent/US3602673A/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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/58—Manual reset mechanisms which may be also used for manual release actuated by push-button, pull-knob, or slide

Definitions

  • a mobile unit carries a movable switch at one end and longitudinally spaced, transverse shafts to one side thereof.
  • One shaft is spring biased to the upper end of a vertical guide slot while the other shaft rides on a push button, spring biased, sliding control piece.
  • a spring biased locking plate carrying a window cooperates with a spring biased, oscillating lever to receive a stop during switch closing position while a projection on the same oscillating lever locks up the sliding control piece. Tilting of the spring biased locking plate releases the switch contacts and the sliding control piece.
  • This invention relates to an interlock mechanism which can be used especially for controlling electrical cutoff apparatuses and which does not entail these inconveniences.
  • a mobile unit equipped with at least one contact piece capable of cooperating with a fixed contact piece and two lugs, the first of which can slide on a fixed slide-bar and tends to be held at one end of that bar due to the action of a spring when the contacts are in the open position, and whose second lug cooperates, without being connected to it, with a catch of a sliding control piece.
  • a lever oscillates around a fixed axis of said lever and is subjected to the action of a spring tending to engage a projection in the window of the control piece and a stop of said lever in a window of a locking plate oscillating around a fixed axis.
  • the members are arranged in such a way that when one lowers the control piece, its catch will, on the one hand, be supported on the second lug of the mobile unit so as to lower the latter essentially parallel to itself until its first lug essentially reaches the other end of the slide-bar.
  • the oscillating lever tips due to the fact that its projection can engage in the window of the control piece and its stop in the window of the locking plate, which inclines due to the action of a spring so as to lock said stop in said window.
  • a shoulder of said lever is then placed above the first lug of the mobile unit so as to keep it at the bottom of the slide-bar, which locks said mobile unit, since, when one allows the control piece to rise, the mobile unit turns around its first lug at the bottom of the slide-bar. Further, the second lug escapes the catch of the control piece. The mobile unit then is able to rotate under the action of its associated spring until its contact piece is applied upon the fixed contact piece.
  • FIGS. 1-6 represent by way of example one possible version of a locking mechanism according to the invention.
  • FIG. 1 is a schematic cross section view along axis AA in FIG. 2, and schematically represents the various elements of the lock and the operating members in the "released" state.
  • FIG. 2 is a schematic, partial side view of the device according to FIG. 1.
  • FIG. 3 is a similar view to that of FIG. 1, showing the respective position of the various elements at the end of the first arming phase.
  • FIG. 4 is a similar view, showing the position of the elements at the end of the second arming phase, corresponding to the locking of the assembly in the interlocked" state.
  • FIG. 5 shows the displacements of the contact-carrier unit during the automatic operation of the mechanism.
  • FIG. 6 shows the position of the elements at the beginning of the voluntary and manual release of the mechanism.
  • An oscillating lever 1 for example, made of molded material, can pivot around an axis 2 between two cheeks 3 and 4 and tends to move in the counterclockwise direction due to the ac-- tion of a spring 5.
  • contact-carriers symbolized by the lines 6 and 7 are joined to each other by means of two transverse shafts 8 and 9.
  • Shaft 9 is guided and can slide in two guides 10 and 11 which are made in the cheeks; two springs 12 and 13, attached, for example, to respective cheeks 3 and 4,,
  • axis 9 is below a catch 14 of a control member 15 which itself is moved upward in the figure by a recovery spring 16.
  • the mechanism involves a locking plate 17, pivoting around an axis 18 and which tends to move against a stop 20 by the action of a compression spring 1Q.
  • Shaft 8 then is fixed and serves as axis of rotation for the contact-carrier unit.
  • Operating member 15 continues its rising movement, and the contact-carrier unit pivots around shaft 8, and it arrives at the moment when shaft 9 abruptly escapes from catch 14, thusbringing about the rapid closing of the mobile contacts 26 upon the fixed contacts 27, something which is accomplishedindependently of operating member 15.
  • the upward movement of the operating member 15 is stopped when its window 23 bumps against the projection 22 of oscillating lever 1, which causes the lockto be locked.
  • oscillating lever 1 In the locked position, oscillating lever 1 is subjected, on the one hand, to a force exerted by recovery springs 12, 13, throughv shaft 8, -upon shoulder 24 and which tends to bring of just a single one of them, for example, spring 5, with the other ones being initially adjusted), the resultant couple, to which oscillating lever 1 is subjected, may be reduced as much as one desires, so that a minor effort, exerted by spring 19, suffices for plate 17 to lock the assembly. It also suffices to exercise the very small force F upon this plate 17 (FIGS. 4 and 5) to unlock the lock.
  • This opposing force F may be exercised by any means, such as, for example, the action of a thermostatic leaf, a current.
  • the contact-carrier unit 6, 7 goes up practically parallel to itself over a short distance d, thus bringing about the establishment of a disconnect are between contacts 26, 27. Then the contact, carrier 6, 7, along its way, runs into fixed stop 20 which, for example, is made in one piece with the cheeks, thus constituting a point of rotation for the mobile unit.
  • the position of this stop 28 is such that, on the one hand, the displacement of the mobile contact 26 speeds up and has a great amplitude, although the points of application of the recovery forces move very little and, on the other hand, shaft 9, destined for the arming of the lock, resumes its place along the operating member 15.
  • operating member 15 is free, that is to say, it is not voluntarily held in the position where it was in FIG 4; in this case, during the release of the oscillating lever 1 by plate 17, the mobile contact-carrier unit 6, 7 and the operating member 15 moves simultaneously and shaft 9 directly resumes the position which it had according to FIG. 1, that is to say, under the catch 14.
  • the operating member 15 is voluntarily kept in the position in'which it was according to FIG. 4; in this case, during the release of oscillating lever l, the mobile unit 6, 7 moves along, while the operating lever 15 remains motionless in the position shown in FIG. 5 and axis 9 is above catch 14.
  • the latter is set in motion due to the action of the recovery spring 16 which is then strongly compressed, while springs 12, 13 were practically released, so that catch 14 can overcome the resistance offered to its passage by shaft 9 and can move into position above the latter. It is also possible to make catch 14 easily overcome during the upward movement of the operating member and to cause it to be fixed during its descent.
  • the lockingdevice according to the invention thus offers the following advantages:
  • the contact-carrier is not mechanically connected ina fixed fashion to the lock assembly and due to this fact it can move rapidly and independently of the other pieces constituting the mechanisms; the mobile contacts, at a certain moment, become independent of the operating member and then establish electrical circuits abruptly and independently of the operator; the pressure of the contacts is guaranteed by the recovery springs of the mobile units; the oscillating lever is subjected to an assembly of opposing couples; a r the resultant couple applied to the lever can easily be regulated at a relatively low value, and hence offers very great sensitivity for theunlocking of the lock; the movement of the contacts involves one translation and one rotation; the opening distance is very large whereas the other elements of the lock move, very little, hence fast contact openings speed; v I the response time of the lock is very short; the position of the operating member indicates the position of the contacts in the apparatus; I the operating member can successively be used for both locking and release of thelock.
  • the invention is by no means limited to those of its possible versions which have just been described'and represented here by way of example but it includes all variants responding to the definition to be found in the claim.
  • the lock according to the invention may of course be used in any automatic electrical apparatus as a circuit breaker or differential switch, regardless of what the number of poles may be.
  • an electrical disconnect switch and an interlock mechanism comprising: a fixed contact, a mobile unit including a movable contact and two longitudinally spaced transversely extending shafts fixed thereto, a fixed guide receiving one shaft, a first biasing spring for biasing said first shaft toward one end of said guide for maintaining said contacts open, a sliding control piece including a catch for operatively contacting said second shaft, and a window therein, a lever mounted for oscillation about a fixed axis and including a stop and a projection, a locking plate mounted for oscillation about a fixed axis and including a window therein, a second spring for biasing said lever projection into engagement with said window of said control piece and for biasing said lever stop into engagement with said window in said locking plate, whereby sliding said control piece in one direction causes said catch to contact said second shaft of said mobile unit to lower the latter essentially parallel to itself until said first shaft reaches the other end of said guide, said oscillating lever tipping when its projection engages the window of the control piece and its stop engage
  • said fixed guide comprises laterally spaced vertical slots
  • said control piece is mounted for reciprocation parallel to the longitudinal axis of said guide slots
  • said locking plate is mounted for oscillation about a fixed horizontal axis above said guide slots and on the side opposite said sliding control piece, and a fixed stop limits oscillation of said guide plate in a direction away from said oscillating lever.

Landscapes

  • Push-Button Switches (AREA)
  • Lock And Its Accessories (AREA)
  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
US29582A 1969-04-17 1970-04-17 Locking mechanism especially for the control of electrical disconnection apparatuses Expired - Lifetime US3602673A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR6912010A FR2036911B1 (xx) 1969-04-17 1969-04-17
US2958270A 1970-04-17 1970-04-17

Publications (1)

Publication Number Publication Date
US3602673A true US3602673A (en) 1971-08-31

Family

ID=26214965

Family Applications (1)

Application Number Title Priority Date Filing Date
US29582A Expired - Lifetime US3602673A (en) 1969-04-17 1970-04-17 Locking mechanism especially for the control of electrical disconnection apparatuses

Country Status (8)

Country Link
US (1) US3602673A (xx)
AT (1) AT297132B (xx)
BE (1) BE748694A (xx)
DE (1) DE2017596C3 (xx)
FR (1) FR2036911B1 (xx)
GB (1) GB1270772A (xx)
NL (1) NL7005544A (xx)
ZA (1) ZA702592B (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742162A (en) * 1971-10-27 1973-06-26 Westinghouse Electric Corp Self-contained door safety switch with manually disabled latch
US4691180A (en) * 1986-06-19 1987-09-01 Westinghouse Electric Corp. Circuit breaker with electrical disconnect means
CN107527759A (zh) * 2017-08-23 2017-12-29 许继集团有限公司 三工位开关‑断路器装置及其连锁装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2333804B1 (fr) * 2009-12-11 2012-08-22 Schneider Electric Industries SAS Dispositif de coupure à indicateur de soudure des contacts
FR2953986B1 (fr) * 2009-12-11 2012-05-18 Schneider Electric Ind Sas Dispositif de coupure a indicateur de soudure des contacts

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742162A (en) * 1971-10-27 1973-06-26 Westinghouse Electric Corp Self-contained door safety switch with manually disabled latch
US4691180A (en) * 1986-06-19 1987-09-01 Westinghouse Electric Corp. Circuit breaker with electrical disconnect means
AU588110B2 (en) * 1986-06-19 1989-09-07 Westinghouse Electric Corporation Circuit breaker with electrical disconnect means
CN107527759A (zh) * 2017-08-23 2017-12-29 许继集团有限公司 三工位开关‑断路器装置及其连锁装置
CN107527759B (zh) * 2017-08-23 2019-01-01 许继集团有限公司 三工位开关-断路器装置及其连锁装置

Also Published As

Publication number Publication date
FR2036911B1 (xx) 1976-04-16
DE2017596A1 (de) 1970-10-29
BE748694A (fr) 1970-10-09
GB1270772A (en) 1972-04-12
NL7005544A (xx) 1970-10-20
DE2017596B2 (de) 1977-07-21
AT297132B (de) 1972-03-10
DE2017596C3 (de) 1978-03-16
FR2036911A1 (xx) 1970-12-31
ZA702592B (en) 1971-02-24

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