DE10305291A1 - A method for mechanically or manually operating a linear movement for doors or lifts has an electrically selected magnetic clutch - Google Patents

Abstract

The clutch members are separated by a spring (24) which is depressed to drive a gear (7), by an electromagnetic actuator (22), and a drive gear (12) engaging a toothed bar (13) having end stops (10) and damping gear (8) as a switch (3) disengages the clutch.

Description

The invention relates to travel unit for optional Automatic or manual operation with a control to any and safe procedures of load-dependent Goals, extracts, Drawers, etc. where the drive and control are electrical, can be carried out pneumatically, hydraulically or mechanically.

• – Es ist nur ein elektrischer Betrieb möglich.
• – Ein behindertengerechter Betrieb ist nicht oder nur sehr bedingt möglich.
• – Keine Drehmomentenanpassung bei unterschiedlicher Last, da die Drehmomentbegrenzungseinrichtung nur bei Überschreitung des maximalen Drehmomentes schaltet.

From the EP 1 125525 A1 Although an electromotive driven device is preferably known for pulling out drawers and / or tall cabinets, this pull-out device has at least the following disadvantages:

• - Only electrical operation is possible.
• - Disabled access is not possible or only possible to a very limited extent.
• - No torque adjustment at different loads, since the torque limiting device only switches when the maximum torque is exceeded.

The invention is therefore based on the object of creating a traversing device which can be used in a more versatile, comfortable, safe and disabled-friendly manner. Versatile uses include:
... in addition to electrical operation, pneumatic, hydraulic, mechanical operation or a combination of these is also possible.

Can be used more comfortably:
... the actuation switches actuation elements can be attached to an ergonomically favorable location regardless of position.
... that the operation can also be remote-controlled, for example radio-controlled and / or voice-controlled, so that direct contact with the controls is no longer necessary.
... that any intermediate positions can be easily realized. This makes handling much easier, especially for older and / or physically disabled people.

Safer:
... that when using a remote control at least for switching the drive ON and / or OFF it is no longer necessary to have direct contact with the travel device.
... that the torque that can be transmitted between the drive and the output is load-dependent, which automatically limits the extension and retraction force to a low, permissible value and thus prevents injuries and / or damage during the process, and therefore also with the appropriate design childproof operation is possible.

Of course, the traversing device alternatively operated by hand become.

• – Verringerung der Unfall- und Verletzungsgefahr durch selbsttätige, lastabhängige Drehmomentbegrenzung und Abtriebsunterbrechung.
• – Selbsttätige Unterbrechung der Ein- oder Ausfahrbewegung bei Überlast.
• – Jederzeitige Fahrtunterbrechung durch Schalterbetätigung oder Aufbringung einer Überlast.
• – Berührungsloser Betrieb durch Fernsteuerung insbesondere bei Verwendung einer Sprachsteuerung.
• – Leichtanlauf in mindestens einer Endlage, die bei entsprechender konstruktiver Auslegung zusätzlich als Endlagen- und Gräuschdämpfung dienen kann.
• – Einfachere und bequemere Zugänglichkeit des Lagerraumes.
• – Die Betätigungsschalter Betätigungselemente können an beliebiger, ergonomisch günstiger Position angebracht werden.
• – Die Abtriebseinheit kann neben einem elektrischen Antrieb und Steuerung auch mit einem entsprechenden pneumatischen, hydraulischen, mechanischen Antrieb und Steuerung oder einer Kombination hiervon betrieben werden.
• – Zugriffschutz insbesondere für Kinder durch Anbringung der Betätigungselemente an geeigneter Stelle.
• – Wahlweise Automatik- oder Handbetrieb.

This object is achieved with the features of the claim 1 solved. The claims 2 to 9 form the invention in an advantageous manner. Advantageous embodiments of the invention include at least the following features:

• - Reduction of the risk of accidents and injuries through automatic, load-dependent torque limitation and output interruption.
• - Automatic interruption of the entry or exit movement in the event of an overload.
• - Travel interrupted at any time by operating the switch or applying an overload.
• - Non-contact operation by remote control, especially when using voice control.
• - Easy start in at least one end position, which can also serve as end position and noise damping with a corresponding design.
• - Easier and more convenient access to the storage room.
• - The actuating switch actuating elements can be attached at any ergonomically favorable position.
• - In addition to an electric drive and control, the output unit can also be operated with a corresponding pneumatic, hydraulic, mechanical drive and control, or a combination thereof.
• - Access protection especially for children by attaching the actuating elements at a suitable location.
• - Choice of automatic or manual operation.

1 shows a possible travel unit in the initial position with the clutch disengaged with easy start, end position damping and safety shutdown. It can be operated using a button or remote control.

This travel unit is described below with the help of 2 to 4 described.

2 shows a possible travel unit in the initial position with the clutch closed with the clutch engagement magnet retracted 22 ,

3 shows a partially extended travel unit.

4 shows the electrical circuit selected here for actuating the moving unit.

• – einem Vollauszug 1 (schematische Darstellung)
• – einem Lager- und Schutzgehäuse 19, 26
• – einem Antriebsteil bestehend aus elektr. Getriebemotor 14 und Übersetzungsgetriebe 21
• – einer Kupplung (permanentmagnetische Stirndrehkupplung) mit lastabhängiger Drehmomenteneinstellung (Drehmomentensteller) 23, 24 und 25
• – einer Kupplungseinrückeinheit 22 und 4
• – einem Abtriebsteil mit Leichtanlauf- und Endlagendämpfung 7, 8, 9, 10a, 10b, 11, 12 und 13
• – einem Lastabhängigen Hubgeber 15, 16, 17, 18, 20
• – einer elektrischen Steuerung mit Gehäuse

Such a travel unit essentially consists of:

• - a full extension 1 (schematic representation)
• - a bearing and protective housing 19 . 26
• - A drive part consisting of electr. gearmotor 14 and transmission gears 21
• - a coupling (permanent magnetic face rotating coupling) with load-dependent torque setting (torque adjuster) 23 . 24 and 25
• - a clutch engagement unit 22 and 4
• - An output part with easy start and end position damping 7 . 8th . 9 . 10a . 10b . 11 . 12 and 13
• - a load-dependent stroke encoder 15 . 16 . 17 . 18 . 20
• - an electrical control with housing

The circuit is designed so that no appreciable current flows in the idle state. In the in 1 Starting position shown, the permanent magnetic front rotary coupling is open in the rest position to allow automatic or manual operation of the extension.

Switch S2 is in this position closed and limit switch S1 opened at the same time. Below are the functional processes described for the automatic retraction and extension of the pull-out.

To extend, either the T1 button is pressed or the relay K1-S is closed using the remote control, which means that the relay is activated 1 the drive motor 14 energized via switch S2 and at the same time by means of R1 / C2 combination the assigned clutch engaging device 22 (which is designed here as an electromagnet) energized for a short time, thereby the connected coupling part 25 in the direction of the opposite coupling part 23 pressed and at the same time the release spring 24 curious; excited; a clutch disengaged due to overload is engaged again and the limit switch 3 open.

The drive speed is transmitted to the output side by means of a permanent magnetic face-turning coupling and by means of gear wheels 7 . 11 . 8th first on the rack 10a transferred whereupon the pull-out moves out at a low speed. After a defined stroke ZA, the drive speed is set using gear wheels 7 . 11 . 12 on the rack 13 transmitted without slippage and, due to the higher gear ratio, the extension speed increased until shortly before the end of the stroke. The remaining stroke ZE is in turn carried out at a much lower speed.

When the end position is reached Switch S2 open, Switch S1 closed and the drive motor is thus de-energized.

• – Endlagendämpfung durch Reduzierung der kinetischen Energien.
• – Geräuschdämpfung durch langsames Heranführen der Entlagenkontaktflächen.
• – Leichtanlauf aufgrund der geringen Übersetzung.

The speed reduction in the end positions allows the implementation of at least three functions:

• - End position damping by reducing the kinetic energies.
• - Noise reduction by slowly moving towards the rest contact surfaces.
• - Easy start due to the low gear ratio.

To retract, either the T2 button is pressed or the relay K1-S is opened using the remote control 1 and switch S1 reversed the motor, the pull-in again retracts at a low speed; In this position, too, any clutch disengaged due to overload is snapped in again beforehand.

After execution of the stroke ZE, the constant drive speed is again by means of gears 7 . 11 . 12 on the rack 13 transmitted without slip and the entry speed increased until just before the starting position. The remaining stroke ZA is in turn carried out at a much lower speed.

When the starting position is reached switch S1 is opened, Switch S2 closed and the drive motor is de-energized.

With this travel unit the Coupling uncoupled in the end positions, so the pull-out can also be done operated by hand this is important in the event of a power failure or overload shutdown.

This is also particularly advantageous Presence of a load-dependent, self-adjusting torque actuator as a safety and / or Protection unit.

Because the cargo holds of such excerpts, Drawers etc. freely accessible and are also used by children, the disabled or the elderly, are appropriate measures to avoid damage or accidents while the extension and retraction of such devices required; this torque adjuster allows a "child-safe operation" with the correct design simply by that during of extending and retracting only the required load-dependent torque to disposal stands and that when exceeded this predetermined torque an automatic interruption of the torque transmission between drive and output.

The almost constant drive torque of the geared motor is transmitted to the driven side by means of a permanent magnetic face-to-face coupling, the power transmission or torque transmission takes place by opposing magnetic poles with a load-dependent air gap XA on the drive and driven sides, see 2 and therefore the torque required in each case transfer.

A load is carried by means of a supporting beam 17 on the existing spring-bearing combinations 15 . 16 and on the drive-side coupling part 23 transmit and generate an additional, load-dependent travel XG between the two coupling parts 23 . 25 and thus a corresponding load-dependent change in the transmissible torque; with increasing load, the air gap XA is reduced by the load-dependent path XG, which increases the torque on the output side to the permissible value. When the load drops, the one with the support beam 17 connected drive-side coupling part 23 using a spring-bearing combination 15 . 16 Pulled upwards by the travel path XG and thus the air gap XA is increased accordingly while simultaneously reducing the torque on the output side.

With this automatic air gap adjustment is constantly generates a torque that meets the requirements.

If an overload occurs during extension or retraction, the drive and drive-side magnetic poles shift in such a way that the magnetic poles of the same name now face each other and repel each other. This repulsive force is caused by the existing force of the release spring 24 still reinforced, whereupon the output-side coupling part 25 is reset to the disengagement dimension XS and the clutch disengages and the pull-out stops.

After the hazard has been eliminated the travel unit either manually or automatically to the desired end position be driven.

The switches S1 and S2 are here positioned so that the shutdown of the drive as additional security happens at a suitable distance from the end positions, the The remaining distance is determined solely by the kinetic energy that is still present and / or the potential weight energy.

Claims (9)

Moving unit for either automatic or manual operation, whereby the actuation can be triggered by means of ergonomically arranged buttons, switches or remote control, characterized in that that a load sensor is available that automatically sets and limits the load-dependent traversing force and stops the traversing unit in the event of an overload; and that, using a special gear stage, easy starting from the end positions, end position damping and noise damping in the end positions are achieved. Travel unit for optionally automatic or manual operation according to claim 1, characterized in that Drive and control with electrically operated components. Travel unit for optionally automatic or manual operation according to claim 1, characterized in that Drive and control with pneumatically operated components. Travel unit for optionally automatic or manual operation according to claim 1, characterized in that Drive and control with hydraulically operated components. Travel unit for optionally automatic or manual operation according to claim 1, characterized in that Drive and control is done mechanically. Travel unit for optionally automatic or manual operation according to claim 1, characterized in that Drive and / or control in a combination of the claim 2 to 5 components mentioned. Travel unit for either automatic or manual operation according to one or more of the previous claims, characterized in that an automatic decoupling in the event of overload between drive and output and the coupling automatically into the End positions are done. Travel unit for either automatic or manual operation according to one or more of the previous claims, characterized in that an automatic decoupling in the event of overload between input and output and the coupling in any Position. Travel unit for either automatic or manual operation according to one or more of the previous claims, characterized in that the drive before reaching the end position is switched off and the travel unit the end positions due to residual kinetic energy and / or potential energy is reached.