DE3810561A1 - Drive of small overall dimensions for gate or door systems - Google Patents

Abstract

To raise and lower rolling shutter doors (sliding gates), rolling grilles, awnings and the like, use is made of a driving device in which the housing part accommodating the drive motor and the control box are arranged parallel and adjacent to one another and on the same side of the hollow shaft. The driving motor is fitted with an extended armature and is connected via a stepped drive shaft to the worm gear mechanism. The limit switch arranged in the control box is, for its part, connected via an operating shaft to the hollow shaft, which meshes in an eccentrically arranged worm drive of the limit switch, thereby ensuring, overall, a markedly reduced width of the housing accommodating the entire drive motor while providing optimum operating conditions. This favourable arrangement of the individual parts of the driving device ensures that the necessary power is transmitted from the drive motor to the hollow shaft via the reduction gear mechanism. <IMAGE>

Description

The invention relates to a device for lifting and Lowering roller doors, rolling grilles, awnings and the like with a high speed drive motor and a between Drive motor and hollow shaft arranged reduction gear from worm gear and at least one spur gear stage with a spur gear arranged on the hollow shaft and a a control box having a limit switch.

Such devices are used to move roller shutters, Rolling grilles and also to awnings from an end position in to bring the other or to raise or lower these gates reduce. With such roller shutters, the exits from factory halls, workshops, etc. secured. For safety reasons such roller shutter systems are equipped with safety gear, which prevent the roller door in the event of a drive failure crashes unchecked. The for raising and lowering the Rolling gates or the awning performance is achieved by applied a high-speed engine. To get to the necessary low speed of rotation of the roller shutter shaft or Coming awning axis are snails and gear reduction uses gear that regulates the speed down so far, that they are sufficient for the said systems. Is difficult however, especially in the case of small-scale plants to transfer the maneuverable big moment to the winding shaft. Out For this reason, you have so far been restricted to certain dimensions, down to which such devices for lifting and Sinks can be used. This is essentially the reason that such for rolling gates and rolling grilles for Use coming devices for awnings not use can find.

But if you go in the dimensions of the drive motor as well as the other parts of the plant further down, so enough the transmitted torque is no longer to be used with systems lowering area and to raise or roll it up.

The invention is therefore based on the object Drive device with reduced dimensions, especially to create width, which means that even in confined spaces nits like awnings is easy and easy to install.

The object is achieved according to the invention in that that the drive motor receiving housing part and the Control box in parallel next to each other and on the same Side of the hollow shaft are arranged that the drive motor has an elongated anchor and a stepped Drive shaft is connected to the worm gear and that the limit switch positioned in the control box is an except centrally arranged worm gear is assigned, which over a control shaft running parallel to the drive shaft is connected to the hollow shaft.

The inventive design of the drive device allow a reduction in the dimensions so far that despite the high drive torque, installation is also possible in awning systems. While the well-known at least the narrowest-building drive devices Build 100 mm wide, the drive according to the invention direction to 64 mm and even less wide. This reduced width is achieved in that Drive motor and control box both out of range the hollow shaft are arranged, being extended by the Anchor a slimmer, i.e. having smaller dimensions Drive motor is created, which has a corresponding Drive shaft as well as the control box via a tax Correspondingly small dimensions with those to be influenced or parts influencing them can be connected, without a beyond the dimensions of the drive motor Widening of the housing is required. At this Training is then possible, the reduction gear to reduce the size of the drives so that this too the narrow and correspondingly small dimensions  Housing can be accommodated. The limit switch with its eccentric worm gear allows a corresponding narrow design and housing in an area where the control box is accessible and where it can be easily monitored and serviced. Would instead of the worm drive a previously usually turned on set spur gear should be used, the control box build correspondingly wider and would be the overall width specify the drive device negative.

After an expedient training of the invention provided that the control shaft is axially displaceable and on the control box side with several different pitches having worm threads. This is it is possible depending on the length of the roller shutter or awning the limit switch timely shutdown of the drive to effect. It is only necessary to use the control shaft to shift more or less in the axial direction, so that depending on the length of the awning or roller shutter Worm thread is used.

After another appropriate training is pre see that the worm gear assigned to the limit switch is designed to be interchangeable. So it is advantageous possible, one by changing the worm gear to accommodate such in the control box that for the the respective length of the roller shutter or awning end thread. Since the final length does not change changes, a drive can already be made in the factory be prepared for the respective application cases is precisely adjusted. On the other hand, there is also the opportunity to make corrections when when installing it shows that there are certain differences are taken into account with regard to the control have to.  

The limit switch is then particularly accessible and thus adjust or monitor if, as invented provided in accordance with the limit switch with worm gear end of the housing, i.e. on the opposite of the hollow shaft lying narrow side of the entire drive device receiving and protective housing is arranged. The Limit switch is so convenient that by moving the corresponding housing wall or acceptance of the corresponding Housing wall it is immediately accessible, so that for example the worm gear can be replaced more easily.

The replacement or checking of the limit switch and the worm gear is particularly easy, if the housing wall forming the narrow side is detachable with the rest of the housing is connected. In particular, it is here provided the housing wall by screwing with the rest Connect the housing so that with the help of a screwdriver an appropriate correction can be made quickly can.

To the dimensions already mentioned above guarantee the invention provides that the anchor of the An drive motor to 100 to 120 mm, preferably 105 mm ver is elongated. By extending by about 20 mm correspondingly reduced dimensions optimal performance applied that over the reduction gear mentioned and the rest of the device optimally on the hollow shaft and so that can be applied to the roller shutter or awning shaft can.

The drive motor continues to run according to the invention effectively prevents the drive motor from over the limit switch switchable armature brake is assigned. With Response of the limit switch is not only the current drove to the drive motor turned off but at the same time also addressed a mechanical anchor brake, so that this  acting on the anchor for a quick standstill of the rotating anchor. A run-on of the drive motor and is therefore an overload or even damage effectively prevented.

This also ensures optimal dimensions makes that drive shaft and control shaft at a distance are arranged to each other, about the outer diameter corresponds to the hollow shaft. Both waves, which in turn again the distance between the control box and the drive motor have a say in the smallest possible distance brought, whereby their safe intervention on the one hand in the hollow shaft and on the other hand in the reduction gear is guaranteed. A close movement of everyone Drive parts is further favored by the fact that Spur gear has a lateral recess that receives the control shaft mung. This allows the individual parts, i.e. here in particular the spur gear close to the control shaft be brought up, causing a significant reduction the overall width of the drive device is.

To be able to transmit the necessary high moments The invention provides that the reduction gear with forming worm gear and spur gear with the transmission a large torque enabling the number of teeth formed are. For example, the number of teeth on the Worm gear with appropriate pitch angle too reduce in order to be able to arrange strong teeth that a large one Allow torque. The spur gear stage has accordingly talking about a much larger number of teeth, so that reducing the speed to, for example, 12 rpm. can be reached.

The drive device according to the invention is with a Provide safety gear to ensure that they are with  sufficient speed can be driven, but still an unintentional rolling of the roller shutter or awning is safely prevented. This will be done if the low Dimensions in particular the small width of the drive device tion achieved by on the opposite of the spur gear Side of the hollow shaft a safety gear with eccentric locking ring and is arranged integrated in the housing. The catcher direction with clamping ring can because of their training build narrow that with full effectiveness the overall dimensions the drive device, i.e. of the drive device receiving housing not influenced at all or only slightly becomes. The eccentric clamping ring ensures that that when the safety gear responds in the shortest possible way effective fall protection is in place then when the corresponding safety gear with a relative narrow eccentric locking ring is equipped.

A quiet and low loss transmission or a corresponding drive device is in particular thereby ensuring that the drive shaft and control shaft are mounted on both sides of the hollow shaft, the bearing is designed as a ball bearing on the motor side. There a third bearing point in the area of the drive motor for the Drive shaft and the limit switch for the control shaft safe storage is given, whose middle support represents the ball bearing mentioned.

The invention is characterized in particular by that a drive device is created which at out spoke small dimensions, in particular significantly reduced Width can be installed under the most unfavorable conditions can, so that the drive device specifically for small Gate systems and limited space available is or can be coordinated. The reliability and Safety of the drive device is not of small size dependent, since the reduced dimensions are not  due to lower drive power and lower moments is enough, but through clever arrangement and distribution of the individual parts of the drive device can be reached could. The small size not only makes the Mon easier days, but also enables individual assembly solutions. The robust, self-locking worm gear and pull-through strong engines thus form a solid basis for the as Compact drive drive device to be referred to. By the integrated safety gear becomes the range of application the drive device according to the invention is further increased, so that an insert for both smaller and larger awnings systems as well as for roller shutters is easily possible.

Further details and advantages of the invention state from the following description, the accompanying drawing, in which a preferred embodiment example with the necessary details and details share is shown. It shows

Fig. 1 is a side view of the drive device in the region of the reduction gear,

Fig. 2 shows a cross section through the Antriebsvor direction in FIG. 1,

Fig. 3 shows the drive device in side view,

Fig. 4 is an opened control box,

Fig. 5 is a schematically shown drive motor with armature brake,

Fig. 6 is a front view of the housing of Fig. 4 and

Fig. 7 is a rear view of the housing according to Fig. 4.

The drive device ( 1 ) is housed in a stable housing ( 2 ) which also accommodates the hollow shaft ( 3 ). The hollow shaft ( 3 ) is arranged and supported so that a connection to both shaft ends of a roller shutter or an awning is easily possible because the hollow shaft is continuously housed in the housing. The drive device can thus be pushed from both sides onto the shaft ends of a roller shutter or an awning.

In Fig. 1, the representation of the drive motor is omitted. The housing part receiving the drive motor is only hinted at. The drive shaft ( 5 ) is guided through the intermediate wall between the two housing parts and is stepped and engages in the worm ( 6 ). The worm gear ( 7 ), which can be clearly seen in particular in FIG. 2 in its design, engages in its turn in the spur gear ( 8 ) or vice versa, as a result of which the application of the moments is achieved with a corresponding reduction. The spur gear in turn is mounted on the hollow shaft ( 3 ) so that it is automatically rotated automatically when the spur gear ( 8 ) is turned.

The spur gear ( 8 ) or the hollow shaft ( 3 ) in turn mesh in the control shaft ( 9 ), which thus carries the corresponding information directly in the control box.

All the parts described are housed in the partial housing ( 10 ), the drive shaft ( 5 ) and control shaft ( 9 ) with the bearing ( 12 ) in the housing wall ( 7 ) and with the bearing ( 15 ) in the intermediate wall ( 13 ) and thus Support towards the motor side ( 14 ). Since the drive shaft ( 5 ) and the control shaft ( 9 ) are additionally supported on the drive motor or in the control box at the end not shown in FIG. 1, the design of the bearing ( 15 , 15 ') as a ball bearing has a particularly favorable effect.

FIG. 2 supplements the illustration according to FIG. 1, the compact design of the entire drive device in the area of the reduction gear being made even clearer here. Both Fig. 1 and Fig. 2 show that the distance between the drive shaft ( 5 ) and control shaft ( 9 ) is selected so that not only a corresponding intervention of these shafts or driving is ensured, but also an optimally small Height of the entire housing ( 2 ) is possible.

The worm ( 6 ) is, as Fig. 2 illustrates, reduced to the width of a worm wheel, which just ensures a sufficient engagement in the drive shaft ( 5 ). On the short and correspondingly optimally supported via ball bearings ( 17 ) worm shaft, the worm gear ( 7 ) is formed, which enables an effective connection with the spur gear ( 8 ), which meshes on the opposite side either in the control shaft ( 9 ) or has a corresponding recess ( 18 ) for space-saving reception of the control shaft ( 9 ). Fig. 2 illustrates a design in which the control shaft ( 9 ) in turn meshes in a corresponding toothing of the hollow shaft ( 3 ), with a good running of the hollow shaft ( 3 ) is ensured by the bearings ( 19 ) in the form of ball bearings.

On the side opposite the spur gear ( 8 ), a safety device ( 20 ) with an eccentric clamping ring ( 21 ) is attached in the housing ( 2 ) or on the edge. Fig. 1 illustrates that the width of the entire housing ( 2 ) is influenced only slightly, so that an optimally dimensioned housing ( 2 ) can be specified.

The side view of a housing (2) is Fig. 3 again. A power supply in the form of a power supply cable ( 23 ) is provided on the long narrow side of the housing, the housing ( 2 ) having a correspondingly stable cable entry ( 24 ). Fig. 3 also illustrates the sub-division into the sub-housing ( 10 and 22 ). In this partial housing ( 22 ), the control box ( 31 ) and the drive motor ( 30 ) are arranged so that they are easily accessible via the detachable housing wall ( 25 ) on the narrow side ( 26 ). The drive motor ( 30 ) can be located in the plug-in sleeve ( 28 ) in an emergency hand crank ( 27 ) in the event of a power failure or the like. Impairments are operated by hand. With regard to the control box ( 31 ), the limit switch ( 32 ) is easily accessible when the housing wall ( 25 ) is opened and is accordingly also easy to set.

In the part housing (10) from Fig. 1 and Fig. 2 it clearly parts of the drive device (1) are housed. Here, too, easy accessibility is possible by means of appropriate screwing, FIG. 3 illustrating the special design of the safety device ( 20 ) with the eccentric clamping ring ( 21 ).

The control box ( 31 ) can have different designs, with a somewhat widened control box ( 31 ) being deliberately shown in FIG. 4 in order to better explain and show the individual parts. The corresponding speed information and thus the position of the roller shutter or awning is reported to the limit switch ( 32 ) via the control shaft ( 9 ), specifically via the worm drive ( 33 ), which shows this even more clearly than FIG. 4, can be arranged off-center, in order to enable the appropriate information to be supplied via the control shaft ( 9 ).

The worm drive ( 33 ) or the overall limit switch ( 32 ) has switching and safety cams ( 34 ), via which the various contacts ( 35 , 36 ) or limit switch contacts ( 37 , 38 ) and additional contacts ( 39 , 40 ) can be addressed . The limit switch contacts ( 37 , 38 ) are switched or activated via the switching and safety cams ( 34 ), while the safety contacts ( 35 and 36 ) can be addressed via the cams ( 41 ). With ( 42 ) the adjustment device is designated, by means of which the respective position of the worm drive ( 33 ) can be corrected.

The worm drive ( 33 ) is arranged interchangeably within the limit switch ( 32 ), so that by arranging the worm drive ( 33 ) with different pitch, the control or the limit switch ( 32 ) can be precisely adapted to the respective length of the roller shutter or awning is.

The trailing of the drive motor ( 30 ) is prevented by a training, which is explained in Fig. 5. The accordingly extended armature ( 43 ) has a brake part ( 44 ) which corresponds to an armature brake ( 45 ), which automatically causes a braking of the rotating or rotating armature ( 43 ) in the event of a power failure. In this way, the armature ( 43 ) and thus the entire drive motor ( 30 ) are braked quickly and expediently, and in particular with favorable structural dimensions.

FIGS. 6 and 7 show the narrow side (47), wherein here a releasable connection of the respective housing parts is predetermined with the rest of the housing by screws. A detachable housing wall ( 25 ) is also provided on the opposite narrow side ( 26 ), which has already been mentioned further above. Underneath this housing wall ( 25 ) is an emergency drive ( 49 ) equipped with a reel chain ( 48 ), via which manual operation is possible if the drive motor ( 30 ) fails.

Claims (12)

1. Device for lifting and lowering rolling gates, rolling grilles, awnings and the like with a drive motor at high speed and a reduction gear arranged between the drive motor and hollow shaft made of worm gear and at least one spur gear with a spur gear arranged on the hollow shaft, and one having a limit switch Control box, characterized in that the housing part receiving the drive motor ( 30 ) and the control box ( 31 ) are arranged parallel to one another and on the same side of the hollow shaft ( 3 ), that the drive motor has an elongated armature ( 43 ) and via a stepped drive shaft ( 5 ) is connected to the worm gear ( 7 ) and that the limit switch ( 32 ) positioned in the control box is assigned an eccentrically arranged worm gear ( 33 ) which is connected to the hollow shaft via a control shaft ( 9 ) which runs parallel to the drive shaft. 2. Device according to claim 1, characterized in that the control shaft ( 9 ) is arranged axially displaceably and is equipped on the control box side with a plurality of screw threads having different pitches. 3. Apparatus according to claim 1, characterized in that the worm gear ( 33 ) assigned to the limit switch ( 32 ) is designed to be replaceable. 4. The device according to claim 3, characterized in that the limit switch ( 32 ) with worm drive ( 33 ) at the end of the housing ( 2 ), ie on the narrow shaft of the hollow shaft ( 3 ) opposite the entire drive device ( 1 ) receiving and protecting housing is arranged. 5. Apparatus according to claim 3 and claim 4, characterized in that the narrow side ( 26 ) forming the housing wall ( 25 ) is detachably connected to the rest of the housing ( 2 ). 6. The device according to claim 1, characterized in that the armature ( 43 ) of the drive motor ( 30 ) is extended to 100 to 120 mm, preferably 105 mm. 7. The device according to claim 1, characterized in that the drive motor ( 30 ) is assigned a switchable via the limit switch ( 32 ) armature brake ( 45 ). 8. The device according to claim 1, characterized in that the drive shaft ( 5 ) and control shaft ( 9 ) are arranged at a distance from each other which corresponds approximately to the outer diameter of the hollow shaft ( 3 ). 9. The device according to claim 1 and claim 8, characterized in that the spur gear ( 8 ) has a lateral, the control shaft ( 9 ) partially receiving recess ( 18 ). 10. The device according to claim 1, characterized in that the reduction gear co-forming worm gear ( 7 ) and spur gear ( 8 ) are formed with the transmission of a large torque enabling the number of teeth. 11. The device according to claim 1, characterized in that on the spur gear ( 8 ) opposite side of the hollow shaft ( 3 ), a safety device ( 20 ) with eccentric clamping ring ( 21 ) and with in the housing ( 2 ) is arranged integrated. 12. The apparatus according to claim 1, characterized in that the drive shaft ( 5 ) and control shaft ( 9 ) are mounted on both sides of the hollow shaft ( 3 ), the bearing ( 15 ) on the motor side ( 14 ) being designed as a ball bearing.