EP0524152B1 - Automatische Abstellvorrichtung mit Schaltmuffe für elektrischen Motor - Google Patents

Automatische Abstellvorrichtung mit Schaltmuffe für elektrischen Motor Download PDF

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Publication number
EP0524152B1
EP0524152B1 EP92810533A EP92810533A EP0524152B1 EP 0524152 B1 EP0524152 B1 EP 0524152B1 EP 92810533 A EP92810533 A EP 92810533A EP 92810533 A EP92810533 A EP 92810533A EP 0524152 B1 EP0524152 B1 EP 0524152B1
Authority
EP
European Patent Office
Prior art keywords
lead screw
switch
sliding yoke
rocker arm
arm
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
EP92810533A
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English (en)
French (fr)
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EP0524152A1 (de
Inventor
Saegusa Kazuo
Itoh Kazuo
Uchida Hiroshi
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.)
Somfy SA
Original Assignee
Somfy 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 Somfy SA filed Critical Somfy SA
Publication of EP0524152A1 publication Critical patent/EP0524152A1/de
Application granted granted Critical
Publication of EP0524152B1 publication Critical patent/EP0524152B1/de
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
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/14—Operating parts, e.g. turn knob
    • H01H19/18—Operating parts, e.g. turn knob 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
    • H01H19/186—Operating parts, e.g. turn knob 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 with travelling nuts

Definitions

  • the subject of the present invention is an automatic stopping device for an electric motor after a certain number of revolutions, comprising a shaft driven in rotation by the motor and having on its periphery a helical profile linearly driving a walkman slidingly mounted on a guide bar. parallel to the axis of said shaft and actuating a switch at a determined point in its travel on said helical profile.
  • Such a device is particularly intended to control the automatic shutdown of blinds, shutters or doors driven by a geared motor.
  • the helical profile consists of a steel wire wound helically around the shaft and fixed at its ends on two cams integral with the shaft.
  • the helical wire passes through an arm of the player which is thus driven along the propeller.
  • the guide bar of the player is fixed by embedding at one of its ends and the actuation of the switch is done by lateral movement of the player by one of the cams of the shaft, the movement of the player being authorized by bending of its guide bar.
  • the adjustment of this device is relatively long and delicate.
  • the adjustment method is different and a priori the user does not know the upstream / downstream situation of these positions. It is therefore led, in the first place, to carry out some tests to locate these positions.
  • the user In the case where the initial stop positions are upstream of the desired stop positions, the user must, firstly activate the electric motor until it stops automatically at this initial stop position, then cause the propeller and the cam to rotate so as to ensure the closing of the switch, the restarting of the engine and the movement of the windable food controlled by the engine, the propeller having to be driven manually until the rollable element is in the desired position.
  • the object of the present invention is to provide an automatic stop device allowing rapid, precise and unequivocal adjustment.
  • the automatic stop device is characterized in that said shaft consists of a lead screw and that the player has a profiled part engaged in the lead screw and that the guide bar of the player is mounted on a rocker allowing to move the player away from the mother screw and comprises a spring acting axially on the player so as to instantly bring the player into the position in which it actuates said switch when it is spaced from the mother screw.
  • the switch can be actuated, either by the axial displacement of the player, or by its lateral displacement by a cam secured to the mother screw, the presence of a rocker favoring this second solution.
  • the mother screw is disengageable and the axis of the rocker is provided with a radial lever successively ensuring the disengagement of the mother screw and a precise initial positioning determined thereof during of the shaft drive by means of a bistable pusher.
  • the same axis can be used to actuate a shunt switch short-circuiting the stop switch and thus allowing the supply of the motor in the position away from the rocker. All these functions are fulfilled by a simple and compact construction device.
  • Figure 1 is a sectional view along I-I of Figure 2 of an automatic stop device with two lead screws and two players, in an intermediate position of these players.
  • Figure 2 is a sectional view along II-II of Figure 1.
  • FIG. 3 represents the same device with one of the portable devices at the end of the race according to a section III-III of FIG. 4.
  • FIG. 4 is a sectional view along IV-IV of FIG. 3.
  • FIG. 5 represents the same device with one of the portable players in the initial position in a V-V section of FIG. 6.
  • FIG. 6 is a sectional view along VI-VI of FIG. 5.
  • Figure 7 is a sectional view along VII-VII of Figure 5 showing the flip-flops actuating the rockers.
  • FIG. 8 represents the electrical diagram for controlling the motor.
  • the device shown comprises a frame 1 in the form of a cradle on which are mounted the various mobile elements of the stop device as well as the switches and the control means.
  • the device comprises two lead screws 2 and 3 mounted coaxially and freely on a common axis 4 and pushed towards each of the ends of this axis by a common helical spring 5 disposed between the lead screws.
  • the end of the mother screw 2 opposite the spring 5 is provided with a toothed crown 6 meshing, under the thrust of the spring 5, with the internal toothing of a crown 7 fixed on the axis 4.
  • the thread of the screw mother 2 is extended behind by a part of diameter growing in a spiral constituting a cam 8. This cam 8 ends behind with a stop 9. Between the crown 6 and the stop 9, the body of the mother screw 2 has a part in the shape of a heart cam 10.
  • the lead screw 3 has a spiral cam 12, a stop 13, a heart cam 14 and a toothed ring 15 meshing, under the thrust of the spring 5, with the internal toothing of a toothed ring 16 fixed on the axis 4 and provided with an external toothing 17 meshing with the output gear of the reduction gear associated with the motor to be controlled.
  • an axis 18 (FIG. 2) on which is mounted a rocker 19 integral in rotation, with a certain angular play, with the axis 18.
  • This rocker 19 is provided with two transverse arms 20 and 21 supporting a cylindrical guide bar 22 on which is freely mounted a circular player 23 provided with an edge 24 engaged in the thread of the lead screw 2.
  • the guide bar 22 is surrounded by a helical spring 25 compressed between the player 23 and the arm 21.
  • the arm 20 of the rocker has, approximately in the extension of the bar 22, a longitudinal arm 26 cooperating with a switch 27 and on which a spring acts 28 now, on the one hand, the player 23 engaged with the mother screw 2 and, on the other hand, the switch 27 actuated. This switch is closed when activated ( Figure 8).
  • a radial arm 29 On the axis 18 of the rocker is also fixed, with an angular clearance, a radial arm 29 having on the one hand a bevel 29a and on the other hand a notch 29b.
  • the arm 29 is positioned on the axis 18 so that when it is rotated in the direction of the mother screw 2, its bevel 29a abuts against the edge 30 of the mother screw by acting on it like a cam pushing the mother screw 2 to the right by compressing the spring 5 and disengaging the mother screw from the crown 7.
  • the arm 29 comes, by its notch 29b to actuate the heart cam 10 and to position this heart cam in a known manner, for example like the reset hammer of a chronograph.
  • the other lead screw 3 cooperates with identical means designated by the same references accompanied by the sign ′. These means are mounted head to tail relative to the first means, with the exception of the rocker 19 ′ and its arms, the spring 28 ′ and the switch 27 ′ which are located opposite the corresponding elements of the first means.
  • a cam 31 ′ fixed to the end of the axis 18 ′ of the rocker, a cam intended for actuate a switch 32 ′ which short-circuit the switch 31 ′ in the actuated position.
  • the axis 18 of the first means is provided with a cam identical to the cam 31 ′, but not visible in the drawing and actuating a shunt switch 32 shown in phantom because not visible in the section.
  • the axes 18 and 18 ′ drive the rockers by a sector-shaped profile with a certain angular play.
  • the arms 29 and 29 ′ are driven in the same way with a small angular play.
  • the role of these games will become clear when describing the operation of the device.
  • the pinion 33 meshes with a rack 34 of a pusher 35 mounted in a housing at the end of the frame 1.
  • This pusher 35 compresses a spring 36 and it laterally has a heart-shaped groove 37 in which the end is engaged bent by a wire spring 38.
  • This well-known arrangement in itself provides two stable positions for the pusher 35, or a depressed position, as shown for the pusher 35 and a non-depressed position, as shown for the corresponding pusher 35 ′.
  • the pushers 35 and 35 ′ therefore make it possible to maintain the two corresponding axes 18 and 18 ′ in two determined positions. We will therefore understand the need for angular play in the drive of the rockers and release arms.
  • the electrical circuit supplying the motor is shown in FIG. 8.
  • the motor M is a direct current motor supplied by a 12V current source via a change-over switch not shown.
  • the switches 27 and 27 ′ are shown in the actuated position and the switches 32 and 32 ′ in the unactuated position. The positions correspond to intermediate positions of the portable players 23 and 23 ′.
  • the switches 27 and 32 are connected in series with a diode D1 and a relay R1, while the switches 27 ′ and 32 ′ are connected in parallel, in series with a diode D3 and a relay R2.
  • the diodes D1, D3 are antiparallel. Between the winding terminals of each of the relays R1, R2 are mounted, in antiparallel manner, freewheeling diodes D2 and D4.
  • Relays R1 and R2 are provided with a change-over contact r1, respectively r2 represented at rest and whose common points c are respectively connected to each of the motor terminals M.
  • a diode D6 is connected allowing the passage of the current in the motor when contact r1 is in the rest position as shown in the drawing.
  • a diode D5 is connected in parallel to contact r2.
  • the players 23 and 23 ' are in any position, for example the position shown in Figure 1.
  • the two players are each driven by their lead screw in opposite directions.
  • players move in the direction of their cam 8 and 8 ′.
  • the first player which mounts on its cam, for example the player 23, drives the rocker 19 which can tilt freely on its axis 18 due to the angular play provided for this purpose.
  • the arm 26 ceases to actuate the contact 27 which opens causing the engine to stop ( Figures 3 and 4).
  • the two pushers 35 and 35 ′ are pushed into their second position.
  • the two rockers 19 and 19 ′ are thus spaced from the mother screws and the players 23 and 23 ′ are instantly brought back to their initial position by their springs 25 and 25 ′, that is to say in abutment against the stops 9 and 13 as shown in Figure 5 for the player 23 and the pusher 35.
  • the depression of the pusher 35 also has the effect, after a certain stroke, determined by the play of the arm 29 on the axis 18, to cause the arm 29 which successively disengages the mother screw 2 and angularly position this mother screw by its heart cam 10. The same goes for the mother screw 3. Simultaneously, the shunt contacts 32 and 32 ′ are closed allowing the supply of the motor.
  • a reverse voltage is then applied to the motor to drive it in the other direction and the adjustment of the other stopping point is carried out in the same way by means of the pusher 35 '.
  • the limit switches could be actuated in a direction parallel to the axis of the lead screws.
  • the cams 8 and 8 ' are not necessary.
  • the means for bistable positioning of the rockers constituted by the pushers 35 and 35 ', could be eliminated and the rockers kept apart by other means.
  • the actuation cams of portable music players could have another shape.
  • the device could comprise a single lead screw and a single walkman.

Landscapes

  • Transmission Devices (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Lock And Its Accessories (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Switches With Compound Operations (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Centrifugal Separators (AREA)
  • Control Of Electric Motors In General (AREA)

Claims (8)

  1. Automatische Stoppvorrichtung für einen Elektromotor zum Stoppen dieses Motors nach einer bestimmten Anzahl von Umdrehungen, mit einer durch den Motor in Drehung versetzten Welle (2), die auf ihrem Umfang ein Schraubenprofil aufweist, welches ein Schieberad (23) linear antreibt, wobei dieses Schieberad verschiebbar auf einer zur Achse der erwähnten Welle parallelen Führungsstange (22) montiert ist und einen Schalter (27) an einem bestimmten Punkt seines Verschiebungswegs auf dem erwähnten Schraubenprofil betätigt, dadurch gekennzeichnet, dass die erwähnte Welle aus einer Leitspindel (2) besteht und dass das Schieberad (23) einen profilierten Teil (24) aufweist, welcher in die Leitspindel eingreift, und dass die Führungsstange (22) des Schieberades auf einer Wippe (19), welche das Schieberad von der Leitspindel zu entfernen erlaubt, montiert ist und eine Feder (25) aufweist, die axial auf das Schieberad derart wirkt, dass sie das Schieberad während seiner Entfernung von der Leitspindel momentan in diejenige Stellung bringt, in der es den erwähnten Schalter betätigt.
  2. Automatische Stoppvorrichtung nach Anspruch 1, in welcher die Leitspindel axial beweglich auf einer Achse (4) montiert ist und durch eine Feder (5) mit einem beweglichen Teil (7) gekuppelt gehalten wird, welches kinematisch mit dem Motor verbunden ist, dadurch gekennzeichnet, dass die Vorrichtung einen radialen Arm (29) aufweist, der fest an der Wippe angebracht ist und ein Profil (29a) derart aufweist, dass es, wenn die Wippe eine entfernte Stellung einnimmt, gegen die Leitspindel stösst und diese entkuppelt.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Leitspindel (2) einen herzförmigen Nocken (10) trägt, der auf der Bewegungsbahn des erwähnten radialen Arms (29) liegt und durch diesen Arm nach der Entkupplung der Leitspindel betätigt wird, um eine anfängliche genaue Winkelpositionierung der Leitspindel zu gewährleisten.
  4. Vorrichtung nach einem der Ansprüche 1, 2 oder 3, in welcher die Leitspindel an einem ihrer Enden einen Nocken (8) trägt, der die radiale Verschiebung des Schieberades und die Betätigung des Schalters (27) durch die Verschiebung des Schieberades bewirkt, dadurch gekennzeichnet, dass der erwähnte Nocken (8) aus einer spiralförmigen Verlängerung des Gewindes der Leitspindel besteht.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass sie einen zweiten Schalter (32), dessen Betätigung das Kurzschliessen des ersten Schalters bewirkt, ein Organ, welches diesen zweiten Schalter in einer entfernten Stellung der Wippe betätigt, und bistabile Betätigungsmittel (35) zur Betätigung der Wippe aufweist, welche dazu eingerichtet sind, in einer ersten Stellung das Schieberad in Eingriff mit der Leitspindel zu halten und in einer zweiten Stellung die Wippe entfernt und den zweiten Schalter betätigt zu halten.
  6. Vorrichtung nach der Gesamtheit der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Wippe (19) und der radiale Arm (29) koaxial mit einer Steuerachse (18) mit einem Winkelspiel derart verbunden ist, dass der radiale Arm nicht angetrieben wird, wenn sich die Wippe durch die Betätigung des erwähnten Nockens auf dem Schieberad in der entfernten Stellung befindet, und dass, wenn die erwähnte Steuerachse durch die erwähnten bistabilen Betätigungsmittel betätigt wird, um eine von der Leitspindel entfernte Stellung einzunehmen, sie sukkzessive das Entfernen des Schieberades von der Leitspindel, den Antrieb des radialen Armes und damit das Entkuppeln der Leitspindel, dann ihre Winkelpositionierung durch den herzförmigen Nocken und die Betätigung des zweiten Schalters bewirkt.
  7. Automatische Stoppvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass sie doppelt ausgebildet ist, derart, dass sie zwei Stopppunkte für zwei unterschiedliche Drehrichtungen des Motors gewährleistet und dass die beiden Leitspindeln (2, 3) koaxial angeordnet sind.
  8. Automatische Stoppvorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass einer der Schalter (27) und sein Umgehungsschalter (32) zwischen die Klemmen einer Gleichstrom-Speisequelle mit umkehrbarer Polarität und in Reihe mit einer ersten Diode (D1) und mit einem ersten Relais (R1) geschaltet sind, dass zwischen die Klemmen des ersten Relais eine erste Freilaufdiode (D2) geschaltet ist, dass der andere Schalter (27') und sein Umgehungsschalter (32') zwischen die Klemmen der Gleichstromquelle und in Reihe mit einer zweiten Diode (D3), die antiparallel zur ersten Diode (D1) liegt, und mit einem zweiten Relais (R2) geschaltet sind, dass zwischen die Klemmen des zweiten Relais eine zweite Freilaufdiode (D4) geschaltet ist, und dass jedes der Relais einen Wechselkontakt (r1, r2) aufweist, deren gemeinsame Punkte mit jeder der Klemmen des Motors (M) verbunden sind, wobei Dioden (D5, D6), die parallel zum Wechselkontakt liegen, den Durchgang des Stroms in Richtung auf die Quelle gewährleisten.
EP92810533A 1991-07-19 1992-07-14 Automatische Abstellvorrichtung mit Schaltmuffe für elektrischen Motor Expired - Lifetime EP0524152B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9109173 1991-07-19
FR9109173A FR2679376B1 (fr) 1991-07-19 1991-07-19 Dispositif d'arret automatique a baladeur pour moteur electrique.

Publications (2)

Publication Number Publication Date
EP0524152A1 EP0524152A1 (de) 1993-01-20
EP0524152B1 true EP0524152B1 (de) 1996-03-27

Family

ID=9415333

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Application Number Title Priority Date Filing Date
EP92810533A Expired - Lifetime EP0524152B1 (de) 1991-07-19 1992-07-14 Automatische Abstellvorrichtung mit Schaltmuffe für elektrischen Motor

Country Status (6)

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US (1) US5230416A (de)
EP (1) EP0524152B1 (de)
AT (1) ATE136154T1 (de)
DE (1) DE69209393T2 (de)
ES (1) ES2048720T3 (de)
FR (1) FR2679376B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5402984A (en) * 1994-01-18 1995-04-04 The United States Of America As Represented By The Secretary Of The Navy Jack mechanism having positive stop means for its crank handle
US7389806B2 (en) * 2005-02-24 2008-06-24 Lawrence Kates Motorized window shade system
US20070079516A1 (en) * 2005-10-07 2007-04-12 Eckstein Patrick J Device for marking a straight line
US20090308543A1 (en) * 2008-06-13 2009-12-17 Lawrence Kates Motorized window shade system and mount
CN107647891B (zh) * 2017-10-20 2023-08-29 北京派尔特医疗科技股份有限公司 一种电动腔镜吻合器
CN118173407B (zh) * 2024-05-14 2024-07-09 山西王家岭煤业有限公司 煤矿电路开关安全装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1081553B (de) * 1958-09-23 1960-05-12 Dittelbach & Kerzler Spindelendschalter mit eingebautem Vorkontakt
FR2076529A5 (de) * 1970-01-19 1971-10-15 Carpano & Pons
DE2714493C2 (de) * 1977-03-31 1978-11-09 Siemens Ag, 1000 Berlin Und 8000 Muenchen Endschalter fur eine über einen größeren Drehwinkelbereich angetriebene Welle
US4396813A (en) * 1981-12-03 1983-08-02 Westinghouse Electric Corp. Enclosed circuit interrupter of the drawout type having a position actuated drive clutch on the drive means
FR2599524B1 (fr) * 1986-05-28 1988-09-09 Somfy Dispositif d'arret automatique d'enroulement et de deroulement d'un element enroulable
FR2656463B1 (fr) * 1989-12-22 1992-04-17 Somfy Dispositif d'arret automatique pour moteur electrique apres un certain nombre de tours.

Also Published As

Publication number Publication date
EP0524152A1 (de) 1993-01-20
ES2048720T1 (es) 1994-04-01
DE69209393T2 (de) 1996-10-31
ATE136154T1 (de) 1996-04-15
ES2048720T3 (es) 1996-05-16
FR2679376A1 (fr) 1993-01-22
US5230416A (en) 1993-07-27
DE69209393D1 (de) 1996-05-02
FR2679376B1 (fr) 1993-11-12

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