EP2530234B1 - Drive device for adjusting sunscreens - Google Patents
Drive device for adjusting sunscreens Download PDFInfo
- Publication number
- EP2530234B1 EP2530234B1 EP11004394.0A EP11004394A EP2530234B1 EP 2530234 B1 EP2530234 B1 EP 2530234B1 EP 11004394 A EP11004394 A EP 11004394A EP 2530234 B1 EP2530234 B1 EP 2530234B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chain
- drive device
- drive gear
- gear wheel
- escape
- 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.)
- Not-in-force
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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
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
- E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
- E06B9/32—Operating, guiding, or securing devices therefor
- E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
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- 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
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
- E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
- E06B9/32—Operating, guiding, or securing devices therefor
- E06B9/326—Details of cords, e.g. buckles, drawing knobs
- E06B2009/3265—Emergency release to prevent strangulation or excessive load
Definitions
- the present invention relates to a drive device for adjusting sunshade systems with a manually operated chain, which is formed in an endless loop and is in engagement with a drive gear.
- Simple solutions provide that the chain, which is usually designed as a ball chain, inserted into the transmission and fixed on the housing cover of the transmission.
- the chain is thus firmly anchored in the transmission and can not be solved even under load.
- the housing cover itself is connected via a fixed clamp with the rail.
- the object of the present invention is to provide a drive device in which the endless loop detaches from an unintentional catching above a limit force of the drive device to safely avoid the risk of injury.
- this object is achieved in that the chain is guided over at least one guide element that is formed as a bevel gear, wherein laterally next to the guide element an evasive element is provided which escapes when exceeding a certain lateral force generated by the chain and a release of Chain caused by the drive device.
- a solution according to claim 2 is provided, that the drive gear itself is formed as a bevel gear and forms the guide element.
- This solution is characterized by a minimal design overhead, since only the evasive under a certain force evasive element must be provided in addition, while the additional cost of a bevel gear designed as a drive gear, especially in plastic versions are practically negligible.
- an alternative solution according to claim 1 is provided, wherein two guide elements are provided, between which the drive gear is arranged, wherein the guide elements hold the chain from below against the drive gear in engagement.
- the lateral forces that cause the evasion element, not by the drive gear itself but the guide elements are constructed, which are then designed as bevel gears accordingly.
- the advantage is that the drive gear and the rest of the drive mechanism are not burdened with the high impact forces that can occur when caught in the endless loop.
- the guide elements are mounted on a bearing block which is supported on at least one spring element, the one Builds support force in the direction of the drive gear.
- bearing block is divided into two pressure pieces which are spring-mounted independently of each other and each supported a guide element independently of the other.
- This embodiment ensures that in a one-sided stress on the chain, as occurs during normal adjustment of the sunshade system, only one guide element escapes, even if an inappropriate high force application occurs.
- the separate storage of the two guide rollers can thus avoid early unwanted disengagement of the chain.
- a first solution provides that the evading element is provided with a closure in its chain holding position, which opens above a certain release force.
- a closure may for example be designed as a latching device, wherein in the case of separate pressure pieces each is latched to the evading element.
- the evading element is supported by a spring in its chain holding position, wherein the spring force counteracts the side force generated by the at least one bevel gear on the chain.
- the release force can be adjusted according to the spring force.
- An evasive evasive element is preferably combined with an embodiment in which the drive gear itself is formed as a bevel gear and guide element.
- a clearance is provided, which is separated by the evasion of the engagement of the chain with the drive gear and / or the at least one formed as a bevel gear guide element.
- the evading element is preferably pivotally mounted, but it may also be provided a lateral guide.
- the evading element is also formed as a bevel gear and arranged coaxially to the drive gear end to end to this, wherein the deflection movement of this further bevel gear a gap between the two bevel gears releases so that the chain can slip down out of engagement.
- the drive gear has corresponding receptacles for the balls, which ensure the positive engagement and allow lateral sliding out when dodge the evasion element.
- a drive device 10 is shown, as it is typically provided on the front side of the upper rails of sun protection systems, such as roller blinds or blinds.
- the embodiment shown drives, via a shaft 12, a catch-up or turning device of the sunshade system, which is not described in more detail, and is formed with a bevel wheel at its end facing a safety device 14.
- This bevel gear is provided with a spur toothing 18, whose shape is chosen so that balls 20 of a ball chain 22 are held positively in engagement.
- the end face of the bevel gear is located in the immediate vicinity of a wall designed as evasive element or is located only at a slight distance from this evasive element, so that the balls 20 are held without play between the teeth 18 and the evading element 24.
- the evading element 24 is supported by springs 26 on a housing 28 whose force is supported depending on the game on the bevel gear 16 or on a stop. This makes it possible to manually transmit corresponding operating forces via the ball chain 22 to the bevel gear and via the drive shaft 12 to the adjusting device of the sun protection system.
- the formation of the drive gear 16 as a bevel gear ensures that acting on the balls 20 an axial force in the direction of the evading element 24. If this force exceeds the force of the springs 26, the evading element 24 deviates into a free space 30, so that the balls come out of engagement with the toothing 18. Due to the resulting space between the toothing 18 and the evading element 24 (see Fig. 2 ), the chain may slip outwards and downwards, and there is no danger that a person caught in the ball chain, which is formed as an endless loop, may strangulate.
- a further embodiment of a drive device 110 is shown, in which the drive gear 116 is formed as a cylindrical gear with a corresponding to the balls 120 of the ball chain 122 teeth.
- the driving forces are transmitted again correspondingly via a drive shaft 112 to the adjustment mechanism of the sun protection system.
- the ball chain 120 is not placed from above on the teeth 118 of the drive gear 116, but is pressed by means of a bearing block 140 and two guide elements 142, between which the drive gear 116, from below against this.
- the bearing block 140 consists of two pressure pieces 144, 146, which are U-shaped (see Fig. 4 ) and on each of which by means of a respective cylindrical pin 148 a guide element 142 is rotatably mounted.
- the guide elements are designed as bevel gears (see Fig.
- each pressure piece 144, 146 is pressed by a compression spring 150, 152 in the direction of the drive gear 116, so that the ball chain 122 in an arc through the plant guided and positively pressed from below against the teeth 118 of the drive gear 116.
- a deflecting element 124 is pivotably mounted in a housing 128 (see FIG Fig. 4 ).
- a closure or latching point 152 (see Fig. 5 and Fig. 7 ) is provided, which is formed so wide that they can engage with two pressure pieces (144, 146).
- the interior of the housing 128 is divided into two chambers, wherein in the left chamber, the functional elements are included, while the right chamber forms a space 130 so that the pivotally mounted evasive element 124 can swivel laterally when overloaded and the ball chain 120th is released down. Since the free space 130 is part of the housing, there is no risk of incorrect installation, since the necessary space for evasion space is kept within the housing and can not be blocked by too close system in a corner or a soffit.
- FIG. 7 shows by way of example the operation of the ball chain at the rear part, in Fig. 7 in the sense of the representation the right side.
- the rear pressure member 144 is moved downward, wherein the spring 150 is compressed. Since the front part of the ball chain 122 is still not loaded, presses there provided Spring 150, the front pressure piece 146 upwards, so that the latching point 152 is released only in the region of the rear pressure piece 144, but still blocked in the region of the front pressure piece 146.
- the evading member 124 thus securely holds the ball chain 122 in engagement with the drive gear 116.
- FIGS. 8 and 9 An incorrect operation of the gear is in FIGS. 8 and 9 shown.
- Such a case occurs when simultaneously pulled at the front and rear of the ball chain 122 with so much force that both plungers 144, 146 lower simultaneously.
- This load case can also occur, for example, when a person has caught in the endless loop of the ball chain 122 and can no longer control his movement in a fall.
- the locking device 152 By simultaneously lowering both pressure pieces 144, 146, the locking device 152 is completely dissolved, so that the evading element 124, as in Fig. 9 shown, can pivot laterally, whereby the ball chain 122 evades laterally in the free space 130 as a result of the bevel gear-like design of the guide elements 142 and is released from engagement with the drive device.
- the ball chain 122 is abruptly force-free and there is no danger that a person can injure, for example, has manipulated and has caught in the loop of the ball chain 122.
- the evading element is formed as a coaxial bevel gear to the drive gear formed as a bevel gear.
- the evading element is then mounted in accordance with axially resilient, so that in case of too high a load on the ball chain, the two bevel gears can axially move away from each other, so that between them a gap is released, through which the ball chain can slip out of the drive device.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Description
Die vorliegende Erfindung betrifft eine Antriebsvorrichtung zum Verstellen von Sonnenschutzanlagen mit einer manuell zu betätigenden Kette, die in einer Endlosschlaufe ausgebildet ist und in Eingriff mit einem Antriebszahnrad steht.The present invention relates to a drive device for adjusting sunshade systems with a manually operated chain, which is formed in an endless loop and is in engagement with a drive gear.
Einfache Lösungen sehen vor, dass die Kette, die meist als Kugelkette ausgebildet ist, in das Getriebe eingelegt und über den Gehäusedeckel des Getriebes fixiert wird. Die Kette ist somit fest im Getriebe verankert und kann sich auch unter Last nicht lösen. Der Gehäusedeckel selbst ist über eine feste Klemmung mit der Schiene verbunden.Simple solutions provide that the chain, which is usually designed as a ball chain, inserted into the transmission and fixed on the housing cover of the transmission. The chain is thus firmly anchored in the transmission and can not be solved even under load. The housing cover itself is connected via a fixed clamp with the rail.
Augrund der Ausbildung als Endlosschlaufe, die unlösbar mit dem Gehäuse verankert ist, kann es vorkommen, dass sich Personen, beispielsweise Kinder unbeabsichtigt mit dem Kopf oder anderen Gliedmaßen in der Schlaufe verfangen und dadurch erheblich verletzen können.Due to the training as an endless loop, which is anchored inextricably with the housing, it may happen that people, such as children inadvertently get caught in the head or other limbs in the loop and thereby seriously injured.
Aus der
Eine weitere Lösung ist aus der
Die Aufgabe der vorliegenden Erfindung besteht darin, eine Antriebsvorrichtung zu schaffen, bei welcher die Endlosschlaufe sich bei einem unbeabsichtigten Verfangen oberhalb einer Grenzkraft von der Antriebsvorrichtung löst, um die Gefahr von Verletzungen sicher zu vermeiden.The object of the present invention is to provide a drive device in which the endless loop detaches from an unintentional catching above a limit force of the drive device to safely avoid the risk of injury.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass die Kette über wenigstens ein Führungselement geführt ist, dass als Kegelrad ausgebildet ist, wobei seitlich neben dem Führungselement ein Ausweichelement vorgesehen ist, das bei Überschreiten einer bestimmten seitlichen, durch die Kette erzeugten Kraft ausweicht und eine Freigabe der Kette von der Antriebsvorrichtung bewirkt.According to the invention this object is achieved in that the chain is guided over at least one guide element that is formed as a bevel gear, wherein laterally next to the guide element an evasive element is provided which escapes when exceeding a certain lateral force generated by the chain and a release of Chain caused by the drive device.
Der Vorteil dieser Lösung besteht darin, dass die Getriebe- teile selbst sich nicht von dem Gehäuse lösen sondern lediglich die Kette aus dem Eingriff mit dem Antriebszahnrad ausrückt. Dadurch wird die Wiederherstellung der Antriebsvorrichtung nach einem Auslösen vereinfacht, da lediglich die Kette unter Betätigung des Ausweichelements wieder in das System eingelegt werden muss.The advantage of this solution is that the gear parts themselves do not come loose from the housing, but instead only the chain disengages from the drive gear. As a result, the restoration of the drive device is simplified after triggering, since only the chain must be re-inserted into the system under actuation of the evading element.
Bei einer ersten Ausführungsform ist eine Lösung nach Anspruch 2 vorgesehen, dass das Antriebszahnrad selbst als Kegelrad ausgebildet ist und das Führungselement bildet. Diese Lösung zeichnet sich durch einen minimalen konstruktiven Mehraufwand aus, da lediglich das unter einer bestimmten Kraft ausweichende Ausweichelement zusätzlich vorgesehen sein muss, während die Mehrkosten für ein als Kegelrad ausgebildetes Antriebszahnrad insbesondere bei Kunststoffausführungen praktisch vernachlässigbar sind.In a first embodiment, a solution according to claim 2 is provided, that the drive gear itself is formed as a bevel gear and forms the guide element. This solution is characterized by a minimal design overhead, since only the evasive under a certain force evasive element must be provided in addition, while the additional cost of a bevel gear designed as a drive gear, especially in plastic versions are practically negligible.
Bei einer zweiten Ausführungsform ist eine alternative Lösung nach Anspruch 1 vorgesehen, wobei zwei Führungselemente vorgesehen sind, zwischen denen das Antriebszahnrad angeordnet ist, wobei die Führungselemente die Kette von unten gegen das Antriebszahnrad in Eingriff halten.In a second embodiment, an alternative solution according to claim 1 is provided, wherein two guide elements are provided, between which the drive gear is arranged, wherein the guide elements hold the chain from below against the drive gear in engagement.
Bei dieser Ausführungsform der Erfindung werden die seitlichen Kräfte, die das Ausweichelement auslösen, nicht durch das Antriebszahnrad selbst sondern die Führungselemente aufgebaut, die dann entsprechend als Kegelräder ausgebildet sind. Der Vorteil ist, dass das Antriebszahnrad und der übrige Antriebsmechanismus nicht mit den hohen Stoßkräften belastet werden, die bei einem Verfangen in der Endlosschlaufe auftreten können.In this embodiment of the invention, the lateral forces that cause the evasion element, not by the drive gear itself but the guide elements are constructed, which are then designed as bevel gears accordingly. The advantage is that the drive gear and the rest of the drive mechanism are not burdened with the high impact forces that can occur when caught in the endless loop.
Besonders bevorzugt ist eine Ausführungsform, bei welcher die Führungselemente auf einem Lagerbock gelagert sind, der auf wenigstens einem Federelement abgestützt ist, das eine Stützkraft in Richtung des Antriebszahnrades aufbaut. Der Vorteil dieser Lösung ist, dass bei einem Einleiten von Kräften auch die Führungsrollen ausweichen können und damit das seitliche Herausgleiten der Kette aus dem Eingriff vereinfacht wird. Außerdem kann die Bewegung des Lagerbockes genutzt werden, um einen Verschluss des Ausweichelements zu entriegeln.Particularly preferred is an embodiment in which the guide elements are mounted on a bearing block which is supported on at least one spring element, the one Builds support force in the direction of the drive gear. The advantage of this solution is that when introducing forces and the guide rollers can escape and thus the lateral sliding out of the chain from the procedure is simplified. In addition, the movement of the bearing block can be used to unlock a closure of the evading element.
Besonders bevorzugt ist eine Weiterbildung dieser Ausführungsform, bei welcher der Lagerbock in zwei Druckstücke unterteilt ist, die unabhängig voneinander federnd gelagert sind und jeweils ein Führungselement unabhängig vom anderen abstützten.Particularly preferred is a development of this embodiment, in which the bearing block is divided into two pressure pieces which are spring-mounted independently of each other and each supported a guide element independently of the other.
Diese Ausführungsform stellt sicher, dass bei einer einseitigen Beanspruchung der Kette, wie sie beim normalen Verstellen der Sonnenschutzanlage auftritt, jeweils nur ein Führungselement ausweicht, selbst wenn eine unangebracht hohe Krafteinleitung erfolgt. Durch die separate Lagerung der beiden Führungsrollen lässt sich damit ein frühzeitiges unerwünschtes Ausrücken der Kette vermeiden.This embodiment ensures that in a one-sided stress on the chain, as occurs during normal adjustment of the sunshade system, only one guide element escapes, even if an inappropriate high force application occurs. The separate storage of the two guide rollers can thus avoid early unwanted disengagement of the chain.
Für die Verriegelung des Ausweichelements sind verschiedene Lösungen möglich. Eine erste Lösung sieht vor, dass das Ausweichelement mit einem Verschluss in seiner die Kette haltenden Stellung versehen ist, der sich oberhalb einer bestimmten Auslösekraft öffnet. Ein solcher Verschluss kann beispielsweise als Rastvorrichtung ausgebildet sein, wobei im Falle von getrennten Druckstücken jedes mit dem Ausweichelement verrastet ist. Damit wird die Verrastung des Ausweichelements erst dann aufgehoben, wenn beide Führungsrollen gleichzeitig ausweichen, wie dies bei einem unkontrollierten Verfangen in der Endlosschlaufe der Fall ist.For the locking of the evading element different solutions are possible. A first solution provides that the evading element is provided with a closure in its chain holding position, which opens above a certain release force. Such a closure may for example be designed as a latching device, wherein in the case of separate pressure pieces each is latched to the evading element. Thus, the locking of the evading element is only canceled when both guide rollers at the same time evade, as is the case with an uncontrolled catch in the endless loop.
Alternativ ist es möglich, dass das Ausweichelement mittels einer Feder in seiner die Kette haltenden Position abgestützt ist, wobei die Federkraft entgegengesetzt der durch das wenigstens eine Kegelrad auf die Kette erzeugten Seitenkraft wirkt. Bei dieser Lösung kann entsprechend der Federkraft die Auslösekraft eingestellt werden. Ein federnd ausweichendes Ausweichelement wird bevorzugt mit einer Ausführungsform kombiniert, bei welcher das Antriebszahnrad selbst als Kegelrad und Führungselement ausgebildet ist.Alternatively, it is possible that the evading element is supported by a spring in its chain holding position, wherein the spring force counteracts the side force generated by the at least one bevel gear on the chain. In this solution, the release force can be adjusted according to the spring force. An evasive evasive element is preferably combined with an embodiment in which the drive gear itself is formed as a bevel gear and guide element.
In einer weiteren bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass auf der Stirnseite des wenigstens einen Kegelrades zugewandten Seite ein Freiraum vorgesehen ist, der durch das Ausweichelement von dem Eingriff der Kette mit dem Antriebszahnrad und/oder dem wenigstens einen als Kegelrad ausgebildeten Führungselement abgetrennt ist. Das Ausweichelement ist vorzugsweise schwenkbar gelagert, es kann aber auch eine laterale Führung vorgesehen sein.In a further preferred embodiment of the invention it is provided that on the front side of the at least one bevel gear side facing a clearance is provided, which is separated by the evasion of the engagement of the chain with the drive gear and / or the at least one formed as a bevel gear guide element. The evading element is preferably pivotally mounted, but it may also be provided a lateral guide.
Bei einer weiteren Ausführungsform, die auf der Lösung basiert, bei welcher das Antriebszahnrad als Kegelrad ausgebildet ist, ist das Ausweichelement ebenfalls als Kegelrad ausgebildet und koaxial zum Antriebszahnrad Stirn an Stirn zu diesem angeordnet, wobei die Ausweichbewegung dieses weiteren Kegelrades einen Spalt zwischen den beiden Kegelrädern freigibt, sodass die Kette nach unten aus dem Eingriff rutschen kann.In a further embodiment, which is based on the solution in which the drive gear is formed as a bevel gear, the evading element is also formed as a bevel gear and arranged coaxially to the drive gear end to end to this, wherein the deflection movement of this further bevel gear a gap between the two bevel gears releases so that the chain can slip down out of engagement.
Diese Lösung lässt sich wiederum auf verschiedene Art und Weise umsetzen, nämlich durch eine Rastverriegelung desThis solution can in turn be implemented in various ways, namely by a latching lock of the
Ausweichelements oder durch eine Federbelastung des Ausweichelements.Evasive element or by a spring load of the evading element.
Entsprechend der Ausbildung der Kette als Kugelkette bei einer Ausführungsform, ist weiterhin vorzugsweise vorgesehen, dass das Antriebszahnrad entsprechende Aufnahmen für die Kugeln besitzt, die den Formschlüssigen Eingriff sicherstellen und ein seitliches Herausgleiten beim ausweichen des Ausweichelements ermöglichen.According to the formation of the chain as a ball chain in one embodiment, it is further preferably provided that the drive gear has corresponding receptacles for the balls, which ensure the positive engagement and allow lateral sliding out when dodge the evasion element.
Nachfolgend wird anhand der beigefügten Zeichnungen näher auf Ausführungsbeispiele der Erfindung eingegangen. Es zeigen:
-
Fig. 1 Eine erste Antriebsvorrichtung nach Anspruch 2 in Arbeitsstellung; -
Fig. 2 die Arbeitsvorrichtung nachFig. 1 im Falle einer Überbeanspruchung; -
Fig. 3 eine weitere Ausführungsform einer Antriebsvorrichtung nach Anspruch 1 im Querschnitt nachFig. 4 entlang der Linie B-B; -
Fig. 4 einen Querschnitt der Ausführungsform nachFig. 3 entlang der Linie A-A; -
Fig. 5 einen Querschnitt der Arbeitsvorrichtung nach Anspruch 2 und nachFig. 6 entlang der Linie A-A; -
Fig. 6 eine Seitenansicht der Antriebsvorrichtung nachFig. 5 ; -
Fig. 7 einen Querschnitt der Antriebsvorrichtung nachFig. 5 bei einseitig ausgeübter Bedienkraft; -
Fig. 8 einen Querschnitt der Antriebsvorrichtung nachFig. 5 bei Überbelastung;Fig. 9 einen Längsschnitt der Antriebsvorrichtung nachFig. 3 entlang der Linie A-A im Falle einer Überbelastung.
-
Fig. 1 A first drive device according to claim 2 in the working position; -
Fig. 2 the working device behindFig. 1 in case of overuse; -
Fig. 3 a further embodiment of a drive device according to claim 1 in cross sectionFig. 4 along the line BB; -
Fig. 4 a cross section of the embodiment according toFig. 3 along the line AA; -
Fig. 5 a cross section of the working device according to claim 2 and afterFig. 6 along the line AA; -
Fig. 6 a side view of the drive device according toFig. 5 ; -
Fig. 7 a cross section of the drive device according toFig. 5 with one-sided operating force; -
Fig. 8 a cross section of the drive device according toFig. 5 in case of overloading;Fig. 9 a longitudinal section of the drive device according toFig. 3 along the line AA in case of overload.
In
Im Falle einer zu hohen Last auf die Kugelkette 22, sorgt die Ausbildung des Antriebszahnrades 16 als Kegelrad dafür, dass auf die Kugeln 20 eine Axialkraft in Richtung des Ausweichelements 24 wirkt. Übersteigt diese Kraft die Kraft der Federn 26, weicht das Ausweichelement 24 in einen Freiraum 30 aus, sodass die Kugeln aus dem Eingriff der Verzahnung 18 gelangen. Durch den entstehenden Raum zwischen der Verzahnung 18 und der dem Ausweichelement 24 (siehe
In
In Abweichung zu der zuvor beschriebenen Ausführungsform ist die Kugelkette 120 nicht von oben auf die Verzahnung 118 des Antriebszahnrades 116 aufgelegt, sondern wird mit Hilfe eines Lagerbockes 140 und zwei Führungselementen 142, zwischen denen das Antriebszahnrad 116 liegt, von unten gegen dieses gedrückt. Der Lagerbock 140 besteht aus zwei Druckstücken 144, 146, die U-förmig ausgebildet sind (siehe
Um ein seitliches Herausrutschen der Kugelkette 122 von den beiden Kegelrädern (142) zu verhindern, ist in einem Gehäuse 128 ein Ausweichelement 124 schwenkbar gelagert (siehe
Die Bedienung einer solchen Anlage erfolgt durch Drehrichtungsänderung, indem je nach beabsichtigter Verstellrichtung am vorderen oder hinteren Teil der herabhängenden Endlosschlaufe der Kugelkette 122 gezogen wird.
Wird die Drehrichtung geändert und entsprechend nur der vordere Teil der Kugelkette 122 belastet, kehrt sich die Lage der Druckstücke um, d.h. das vordere Druckstück 146 senkt sich ab, während das hintere Druckstück 144 sich in der oberen Stellung befindet und damit das Ausweichelement 124 verrastet. Damit ist auch in dieser Arbeitsposition das Ausweichelement 124 immer noch sicher verriegelt.If the direction of rotation is changed and only the front part of the
Eine Fehlbedienung des Getriebes ist in
Durch das gleichzeitige Absenken beider Druckstücke 144, 146 wird die Rastvorrichtung 152 vollständig gelöst, sodass das Ausweichelement 124, wie in
Neben den gezeigten Ausführungsformen von Antriebsvorrichtungen sind weitere Ausführungsformen im Sinne der Erfindung möglich, beispielsweise eine Ausführungsform, bei welcher das Ausweichelement als koaxiales Kegelrad zu dem als Kegelrad ausgebildeten Antriebszahnrad ausgebildet ist. Das Ausweichelement ist dann entsprechend axial nachgiebig gelagert, sodass im Falle einer zu hohen Belastung der Kugelkette die beiden Kegelräder sich axial voneinander entfernen können, sodass zwischen ihnen ein Spalt freigegeben wird, durch welchen die Kugelkette aus der Antriebsvorrichtung herausrutschen kann.In addition to the illustrated embodiments of drive devices further embodiments in the context of the invention are possible, for example, an embodiment in which the evading element is formed as a coaxial bevel gear to the drive gear formed as a bevel gear. The evading element is then mounted in accordance with axially resilient, so that in case of too high a load on the ball chain, the two bevel gears can axially move away from each other, so that between them a gap is released, through which the ball chain can slip out of the drive device.
Claims (17)
- A drive device for adjusting sun protection systems comprising a manually operable chain (122), which engages with a drive gear wheel (116) in a continuous loop, characterized in that the chain (122) is guided via at least one guide element (142), which is embodied as beveled wheel, wherein provision is made laterally next to the at least one guide element (142) for an escape element (124), which escapes in response to exceeding a certain lateral force, which is exerted by the chain and which effects a release of the chain (122) from the drive device.
- A drive device for adjusting sun protection systems comprising a manually operable chain (22), which engages with a drive gear wheel (16) in a continuous loop, wherein the chain (22) is guided via the drive gear wheel (16) and provision is made laterally next to the drive gear wheel (16) for an escape element (24), characterized in that the drive gear wheel (16) is embodied as beveled wheel, and that the escape element (24) escapes in response to exceeding a certain lateral force, which is exerted by the chain and effects a release of the chain (22) from the drive device.
- The drive device according to claim 1, characterized in that provision is made for two guide elements (142), between which the drive gear wheel (116) is arranged, wherein the guide elements (142) keep the chain (122) engaged against the drive gear wheel (116) from below.
- The drive device according to claim 3, characterized in that the guide elements (142) are held on a mount (140), which is supported on at least one spring element (150, 152), which builds up a supporting force in the direction of the drive gear wheel (116).
- The drive device according to claim 4, characterized in that the mount (140) is divided into two pressure pieces (144, 146), which are spring-loaded independent from one another and which in each case support a guide element (142) independent from the other one.
- The drive device according to any one of claims 1 or 3 to 5, characterized in that, in its position, in which it holds the chain (122), the escape element (124) is provided with a closure, which opens above a certain release force.
- The drive device according to claim 6, characterized in that the closure is embodied as snap-in locking device (152).
- The drive device according to claim 7, characterized in that both pressure pieces (144, 146) are in each case snapped into place with the escape element (124), wherein the locking can be overridden by lowering the respective pressure piece, so that the escape element (124) is only free in response to lowering both pressure pieces (144, 146).
- The drive device according to claim 2, characterized in that the escape element (24) is supported in its position, in which it holds the chain (22), by means of a spring (26), wherein the spring force acts against the side force generated on the chain (22) by means of the beveled wheel.
- The drive device according to any one of claims 1 or 3 to 5, characterized in that the escape element (124) is supported in its position, in which it holds the chain, by means of a spring, wherein the spring force acts against the side force generated on the chain (122) by means of the at least one beveled wheel.
- The drive device according to any one of claims 2 or 9, characterized in that provision is made on the front side of the side facing the beveled wheel for a space (30), which is separated from the engagement area of the chain (22) comprising the drive gear wheel (16) by means of the escape element (24).
- The drive device according to any one of claims 1, 3 to 8 or 10, characterized in that provision is made on the front side of the side facing the at least one beveled wheel for a space (130), which is separated from the engagement area of the chain (122) comprising the at least one guide element (142), which is embodied as beveled wheel, by means of the escape element (124).
- The drive device according to any one of the preceding claims, characterized in that the escape element is supported in a pivotable manner.
- The drive device according to claim 2, characterized in that the escape element is embodied as beveled wheel, which is arranged coaxially to the drive gear wheel front to front thereto, wherein the escape movement releases a gap between the two beveled wheels, so that the chain becomes disengaged downwards.
- The drive device according to claim 14, characterized in that the escape element is locked in place or is held in the position, which supports the chain, by means of a spring.
- The drive device according to any one of the preceding claims, characterized in that the chain (22; 122) is embodied as bead chain.
- The drive device according to claim 16, characterized in that the drive gear wheel (16; 116) has accommodations, which correspond to the beads and which ensure the positive engagement and which provide for a lateral slide-out when the escape element (24; 124) escapes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11004394.0A EP2530234B1 (en) | 2011-05-28 | 2011-05-28 | Drive device for adjusting sunscreens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11004394.0A EP2530234B1 (en) | 2011-05-28 | 2011-05-28 | Drive device for adjusting sunscreens |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2530234A1 EP2530234A1 (en) | 2012-12-05 |
EP2530234B1 true EP2530234B1 (en) | 2015-08-19 |
Family
ID=44587589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11004394.0A Not-in-force EP2530234B1 (en) | 2011-05-28 | 2011-05-28 | Drive device for adjusting sunscreens |
Country Status (1)
Country | Link |
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EP (1) | EP2530234B1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20121292A1 (en) * | 2012-07-25 | 2014-01-26 | Pellini Spa | DEVICE FOR COMMANDING THE DRIVE OF A CURTAIN HANDLING GROUP |
DE102014003134B4 (en) * | 2014-03-04 | 2016-07-14 | Blöcker Zweigniederlassung der Hunter Douglas Holding GmbH & Co. KG | Safety gear for a curtain system |
NL1040807B1 (en) | 2014-05-16 | 2016-03-02 | Forest Group Nederland Bv | Device for rotating the axis of a roller blind or similar object. |
TWI581740B (en) | 2016-07-15 | 2017-05-11 | 程田有限公司 | Safety device for curtain controller |
TWI628351B (en) * | 2016-12-26 | 2018-07-01 | 程田有限公司 | Curtain controller |
GB2559796A (en) * | 2017-02-20 | 2018-08-22 | Uni Soleil Entpr Co Ltd | Curtain control assembly with safety device for bead chain |
US11297966B2 (en) * | 2020-04-27 | 2022-04-12 | Emeh, Inc. | Privacy or cubicle curtain system and carrier thereof |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29705188U1 (en) * | 1997-03-21 | 1998-07-23 | AEROLUX Produktions- und Handelsgesellschaft mbH, 22926 Ahrensburg | Pulling element for blinds, roller blinds or the like |
US6116325A (en) | 1997-04-02 | 2000-09-12 | Hunter Douglas Inc. | Break away operating cord system for retractable coverings for architectural openings |
CA2414555C (en) | 2001-12-17 | 2009-07-21 | Hunter Douglas Industries B.V. | Safety device for cord-operated control system |
TW549348U (en) * | 2002-12-13 | 2003-08-21 | Nien Made Entpr Co Ltd | Instant positioning devices for reel of window curtain |
-
2011
- 2011-05-28 EP EP11004394.0A patent/EP2530234B1/en not_active Not-in-force
Also Published As
Publication number | Publication date |
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EP2530234A1 (en) | 2012-12-05 |
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