Classifications

• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
  • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
  • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
  • E06B9/88—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for limiting unrolling
• • 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
  • H01H19/183—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 adapted for operation by the simultaneous action of two cam plates, rotating at different speeds

Definitions

• the present invention relates to an automatic stop device for driving a sun protection element, concealment or closure. It relates in particular to a device according to the preamble of claim 1.
• the end of stroke detection can be done for example by means of a sensor which may consist of a simple switch opening the supply circuit of the actuator when the element abuts against it.
• This detection can also be done by an electronic or mechanical device detecting a resistant mechanical torque when the element comes to the end of its travel against a mechanical stop, and then controlling the opening of the electrical supply circuit of the actuator.
• Patent FR 2 688 022 discloses an automatic stop device comprising two revolution counting mechanisms constituted by coaxial counting wheels driven by pinions and each associated with a notched cam cooperating with a cutting finger integral with a common cutting lever, returned to a position in which the cutting fingers are in contact with the notched cams. When the notches are aligned, the cutting fingers penetrate into them and the cutting lever actuates a switch opening the supply circuit of a motor.
• the device further comprises two reset mechanisms respectively associated with the two counting mechanisms. They mainly comprise means for disengaging the counting wheels and a lever making it possible to reset the counting wheels to zero by acting by hammers on cams integral with the latter.
• the counting wheels, the cut-off lever and the reset lever of each counting mechanism are pivoted in a common cradle articulated with respect to a fixed frame having profiled parts intended to cooperate with the cut-off levers and the levers of reset when moving the cradles.
• the automatic shutdown devices described in applications FR 2 479 548, FR 2 756 320, EP 1 172 515 and WO 99/26262 have substantially the same architecture as the device previously described.
• the different counting wheels of the same counting mechanism are arranged in a row on the same axis, associated with notched cams and mesh with pinions.
• an electric motor control device comprising two mechanisms for interrupting the supply current.
• This device has complicated zero-setting mechanisms.
• the structure complicated by the numerous parts of these mechanisms means that parts of the mechanisms have to be unscrewed in order to reset them and, on the other hand, vibrations due to operation can cause these parts to be unscrewed and modify the set positions.
• the object of the invention is to provide an automatic stop device overcoming these drawbacks and improving the existing devices.
• the invention proposes to provide a device for automatic shutdown of small dimensions in the direction of its length and whose architecture of the zeroing mechanism is simple and ensures the reliability of the device.
• the automatic stop device according to the invention is characterized by the characterizing part of claim 1.
• Figure 1 is a sectional view of a first embodiment of the automatic stop device 1 according to the invention.
• Figure 2 is a sectional view along the plane II-II of Figure 1 of this first embodiment of the automatic stop device.
• FIGS 3 to 6 are schematic views of this first embodiment of the automatic stop device shown in different operating phases.
• Figure 7 is a schematic view of a variant of this first embodiment.
• Figure 8 is a sectional view of another variant of this first embodiment.
• Figure 9 is a schematic view of a second embodiment of the automatic stop device.
• the device represented in FIGS. 1 and 2 comprises a frame 1 in which a shaft 2 comprising a pinion 3 is mounted in pivot connection.
• the shaft 2 is intended to be driven by the drive motor of a sun protection element, occultation or closing, via a reducer.
• On this frame 1 are also mounted in pivot connection with the latter around the axis of the shaft 2, a zeroing lever 4 and a cut-off lever 5 can be tilted manually.
• Two intermediate wheels 6a and 6b having a different number of teeth and meshing with the pinion 3, are mounted symmetrically with respect to the axis of the shaft 2 and in pivot connection on the frame 1.
• counting wheels 7a and 7b having a different number of teeth and meshing with the intermediate wheels 6a and 6b.
• the numbers of teeth of the wheels 6a, 6b, 7a and 7b are chosen so that the wheel 7a is not driven at the same speed as the wheel 7b.
• Each counting wheel 7a and 7b is flanked, on one side of a notched cam 8a, 8b consisting of a smooth wheel having a notch 9a, 9b on its circumference, and on the other side of a heart cam 10a , 10b.
• the cutting lever 5 is movable around the axis of the shaft 2. It is provided with two cutting fingers 11a and 11b integral with the latter and cooperating respectively with the notched cams 8a and 8b.
• the cut-off lever has at one of these ends an arm 12 intended to actuate a switch 13 fixed on the frame 1.
• the zeroing lever is also movable around the axis of the shaft 2. It is provided with two arms having elastic strips 14a and 14b constituting hammers intended to act respectively on each of the heart cams 10a and 10b.
• the cut-off lever 5 is returned by an elastic means not shown in a position of contact of the fingers 11a and 11b with the notched cams 8a and 8b.
• the zeroing lever 4 is in turn recalled by an elastic means not shown in a position in which the counting wheels 7a and 7b mesh with the intermediate wheels 6a and 6b.
• FIG. 1 the cutting fingers 11a and 11b are shown engaged in the notches 9a and 9b of the notched cams.
• the mechanism is in a stopped position, the arm 12 of the cut-off lever 5 acting on the switch 13 which is connected in series with one of the motor windings and with a switch for controlling a first direction of rotation and which opens, when in this position, the motor supply circuit.
• the cut-out lever 5 is manually operated so as to move it, against the action of the return spring, from the position in which the cutting fingers are in contact with the notched wheels.
• the lever then comes into contact with two stops 15a and 15b produced symmetrically on the zeroing lever 4.
• This contact action has the consequence, as shown in FIG. 4, of tilting the zeroing lever 4 against the action of its return spring and of cause the counting wheels 7a and 7b to disengage from the intermediate wheels 6a and 6b.
• the counting wheels are then subjected only to the mechanical contact actions of the hammers 14a and 14b on the heart cams 10a and 10b. They are thus driven in rotation to the positions, shown in FIG. 5, in which the actions of the hammers on the heart cams have directions passing through the axis of the counting wheels.
• the cut-off lever 5 is then released. As shown in FIG. 6, the zeroing lever returns, under the effect of its return spring, to a position of meshing of the counting wheels with the intermediate wheels and the cut-off lever returns, under the effect of its return spring, in a position of contact of the cutting fingers with the notched wheels, in the notches.
• the arm 12 of the cut-off lever then acts, as shown in FIG. 1, on the switch 13.
• This particularly simple procedure for adjusting the stopping point of the sun protection element, concealment or closing is carried out after having brought the element, through the motor, into a position that we want to define as a breakpoint.
• FIG. 7 A variant of this first embodiment is shown in FIG. 7 and differs in that it has three counting wheels 7a, 7b and 7c associated with notched cams 8a, 8b and 8c and with heart cams 10a, 10b and 10c. These three counting wheels mesh respectively with three intermediate wheels 6a, 6b and 6c.
• the operation of this device is similar to the operation of the device described above.
• the three counting wheels 7a, 7b and 7c are distributed at 120 ° around the pinion 3.
• the cut-off lever 5 ' consequently includes three fingers 11a, 11b and 11e and the zeroing lever 4' has three arms 4a, 4b and 4c at 120 °.
• Another variant of this first embodiment is shown in FIG.
• a second embodiment of the device is shown in Figure 9, it differs from the previous embodiment in that the cut-off lever 20 and the reset lever 21 are hinged together and relative to the frame around a axis 22 offset from the drive pinion 3.
• the two levers have an arc shape.
• the cut-off lever 20 acts at one of its ends on a switch 13 and has at its other end cut-off pins 23 and 24 cooperating with notched cams 8a and 8b associated with counting wheels 7a and 7b and with heart cams 10a and 10b.
• the reset lever 21 carries the counting wheels and the hammers cooperating with the heart cams.
• the cut-off lever 20 is returned by elastic means to a position in which the cut-off pins 23 and 24 are in contact with the notched cams.
• the zeroing lever 21 is returned by elastic means to a position in which the counting wheels 7a and 7b mesh respectively with intermediate wheels 6a and 6b.

Landscapes

• Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
• Bipolar Transistors (AREA)
• Photovoltaic Devices (AREA)
• Charge And Discharge Circuits For Batteries Or The Like (AREA)
• Handcart (AREA)
• Exposure Control For Cameras (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=30011576

Family Applications (1)

Country Status (7)

Family Cites Families (9)

• 2002
  • 2002-07-29 FR FR0209616A patent/FR2842940B1/fr not_active Expired - Fee Related
• 2003
  • 2003-07-17 WO PCT/IB2003/003256 patent/WO2004013442A1/fr not_active Ceased
  • 2003-07-17 DE DE60332135T patent/DE60332135D1/de not_active Expired - Lifetime
  • 2003-07-17 EP EP03766555A patent/EP1549818B1/de not_active Expired - Lifetime
  • 2003-07-17 AU AU2003248240A patent/AU2003248240A1/en not_active Abandoned
  • 2003-07-17 AT AT03766555T patent/ATE464453T1/de not_active IP Right Cessation
  • 2003-07-17 ES ES03766555T patent/ES2239930T1/es active Pending

Non-Patent Citations (1)

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