Drive system for revolving doors

Abstract

A drive system (10) for revolving doors (50) comprises a plurality of revolving door drives (11), in particular automatic revolving door drives, each of which has a shaft (13) for delivering a drive power and which differ from one another in terms of their drive power, such that a revolving door drive (11) can be selected from the revolving door drives (11) based on its drive power for the respective revolving door (50), and a plurality of articulation elements (15), wherein the respective articulation element (15) can be connected to a leaf (51) or a frame of the respective revolving door (50) via a rail (53) or a bearing block, wherein the articulation elements (15) differ from one another and each articulation element (15) is assigned to one of the revolving door drives (11).The respective articulation element (15) can only be coupled in a rotationally fixed manner to the shaft (13) of the respective associated revolving door drive (11) and the shaft(s) (13) of the revolving door drives (11) with lower drive power, but not to the shaft(s) (13) of the revolving door drives (11) with higher drive power.

Description

[0001] The invention relates to a drive system for revolving doors with several revolving door drives.

[0002] A revolving door drive can, for example, be mounted on a wall near a door leaf or on a frame associated with the door leaf. It has a shaft connected to the door leaf by means of a linkage element such that, when the revolving door drive is actuated, an opening force acts on the door leaf via the shaft and linkage element. Alternatively, a revolving door drive can also be mounted on a door leaf.

[0003] Since different door classes require revolving door drives with different drive powers to provide different opening forces depending on the application and the weight of the door, it is advisable to design a drive system of the type mentioned above in a modular manner, so that a suitable revolving door drive can be selected for each revolving door. With their different drive powers, the load acting on the hinge element also differs, so with such a modular system, it is also important to consider that levers with different levels of stability are required, each of which is tailored to the drive power of the corresponding revolving door drive.

[0004] It is generally unproblematic to install a pivot element with a revolving door drive that can absorb greater torque than would be required for operation with the corresponding revolving door drive. This can even simplify repairs, especially since a technician does not always need to carry pivot elements of all sizes. However, problems can arise if a pivot element is installed and operated together with a revolving door drive that is not sufficiently dimensioned for operation with the corresponding revolving door drive, i.e., its power class is insufficient for this revolving door drive.

[0005] This can particularly result in damage to the linkage element due to excessive stress.

[0006] The invention is based on the object of providing a drive system for revolving doors in which the installation of a linkage element with an insufficient performance class for the respective revolving door drive is prevented.

[0007] This object is achieved by a drive system having the features of claim 1 or having the features of claim 2. Advantageous further developments are the subject of the dependent claims and emerge from the description and the drawings.

[0008] The drive system according to the invention is for use with revolving doors and comprises a plurality of revolving door drives, in particular automatic revolving door drives, each of which has a shaft for delivering a drive power and which differ from one another with regard to their drive power, so that a revolving door drive can be selected from the revolving door drives based on its drive power for the respective revolving door, and a plurality of articulation elements, wherein the respective articulation element can be connected to a leaf or a frame of the respective revolving door via a rail or a bearing block, wherein the articulation elements differ from one another and each articulation element is assigned to one of the revolving door drives.The respective linkage element can only be coupled in a rotationally fixed manner to the shaft of the respective associated revolving door drive and, if available, to the shaft(s) of the revolving door drives with lower drive power, but not, if available, to the shaft(s) of the revolving door drives with higher drive power.

[0009] According to a further aspect, the invention relates to a drive system for revolving doors, comprising a plurality of revolving door drives, in particular automatic revolving door drives, each of which has a shaft for delivering a drive power and which differ from one another with regard to their drive power, so that a revolving door drive can be selected from the revolving door drives based on its drive power for the respective revolving door, and a plurality of articulation elements, wherein the respective articulation element can be connected to a leaf or a frame of the respective revolving door via a rail or a bearing block, wherein the articulation elements differ from one another and each articulation element is assigned to one of the revolving door drives and can be coupled in a rotationally fixed manner to the shaft of the assigned revolving door drive.The shafts each have an axle and an output member associated with the axle, and the respective axle can only be coupled in a rotationally fixed manner to the respective output member associated with it and, if present, to the output member(s) of the shafts of the revolving door drives with lower drive power, but not, if present, to the output member(s) of the shafts of the revolving door drives with higher drive power.

[0010] For example, revolving door drives and linkages can be divided into different performance classes. For example, the performance classes could be designated as S (small), M (medium), and L (large), so in this case, there would be three performance classes. However, there can also be more or fewer than three performance classes. The designations of the performance classes are also fundamentally arbitrary and serve only as a guide.

[0011] The term "if present" refers, for example, to the fact that the linkage element with the lowest power class among the linkage elements can be non-rotatably coupled to the shaft of the associated revolving door drive, but not to a shaft of a revolving door drive with a lower drive power, since a revolving door drive with a lower drive power than the associated revolving door drive is not present in this case. Accordingly, an axle to which an output member is assigned can be non-rotatably coupled to this output member. However, if the associated output member belongs to the shaft of the revolving door drive with the lowest drive power among the revolving door drives, an output member of a shaft of a revolving door drive with a lower drive power is also not present in this case.The same applies to the linkage element with the highest performance class and to the axis assigned to the output element of the shaft of the revolving door drive with the highest drive power.

[0012] A drive system can generally be designed as an automatic revolving door drive, for example, with an electric drive, but can also be implemented as a door closer. In the case of a door closer, the drive can, for example, be represented by a spring that is tensioned during opening and relaxes once the holding force is released, thereby driving the closing process.

[0013] If the rail is attached to the revolving door leaf, the revolving door operator is typically mounted on the corresponding wall. Alternatively, the rail can also be mounted on the frame or wall. In this case, the revolving door operator is typically mounted on the revolving door leaf. The hinge element allows the revolving door operator to exert an opening force, thereby opening the revolving door.

[0014] What the two different aspects of the present invention have in common is that the rotationally fixed coupling ensures that each articulation element can only be rotationally fixedly coupled to the shaft of the respective associated revolving door drive and the shafts of revolving door drives with lower drive power, but not to the shafts of revolving door drives with higher drive power. This prevents a revolving door drive from being combined with an articulation element that is not designed for a revolving door drive of this power class. Any incorrect assembly by the installer due to negligence is prevented by the fact that each articulation element cannot be coupled to shafts of revolving door drives with higher drive power. This avoids, among other things, excessive stress on the respective articulation element and the resulting repairs and downtime.The rotationally fixed coupling can basically be provided according to the first aspect between the shaft and the articulation element or according to the second aspect, which corresponds to a multi-part shaft, between the output member and the axle, wherein according to the second aspect the articulation element as a spare part is basically to be used with the corresponding axle in the package, so that the coupling between the articulation element and the output member of the corresponding categories can be ensured.

[0015] According to the present invention, for example, a linkage element of the smallest power class S could only be coupled to a revolving door drive of the same power class S to prevent mechanical overload of the linkage element. A linkage element of the medium power class M, on the other hand, could be coupled to a revolving door drive of the power classes S and M, whereas a linkage element of the largest power class L could be coupled to a revolving door drive of all power classes S, M, and L. This means that the linkage element must always be from at least the same power class as the corresponding revolving door drive.While compatibility is given in one direction, in that linkage elements of larger power classes can also be coupled with revolving door drives of smaller power classes, the reverse compatibility is undesirable and therefore not given, i.e. linkage elements of smaller power classes cannot be coupled with revolving door drives of larger power classes.

[0016] In a preferred embodiment, for the rotationally fixed coupling, the shafts and the articulation elements each have mechanical coding features which, on the one hand, have opposing basic shapes in cross-section and, on the other hand, have additional drive power-specific coding features for the revolving door drive(s) which do not have the highest drive power and the articulation element(s) assigned to these revolving door drives, or the axles and the output members each have mechanical coding features for the rotationally fixed coupling which, on the one hand, have opposing basic shapes in cross-section and, on the other hand, have additional drive power-specific coding features for the revolving door drive(s) which do not have the highest drive power.For clarification, it should be noted that the mechanical coding features of the shaft for the revolving door drive with the highest drive power and the linkage element assigned to this revolving door drive, i.e., the linkage element with the highest performance class, can also include additional drive-power-specific coding features. However, this is not mandatory, as even without these, the required compatibility is only guaranteed in one direction. The same applies to the mechanical coding features of the output element and the axle for the revolving door drive with the highest drive power.

[0017] Generally, the shafts and linkage elements, or the output links and axles, are provided with the drive-power-specific coding features, but not the shaft and linkage element, or the output link and axle, of a power class—namely, the highest power class with the highest drive power. This prevents coupling with incompatible components for this power class, as the latter are provided with drive-power-specific coding features that prevent coupling. The drive-power-specific coding features prevent any accidental or intentional attempt to couple a linkage element of a lower power class with a revolving door drive of a higher power class, contrary to the specifications.

[0018] The drive power-specific coding features can, for example, have one or more projections and one or more recesses of opposing shapes on the components involved in the rotationally fixed coupling, i.e., on the shaft and articulation element or on the output member and axle. For example, the projections and recesses can correspond due to their number, position, shape, and / or size. If projections and recesses are not of opposing shapes, coupling of the articulation element to the shaft may be prevented, for example, if the projections are larger or arranged in different positions than the recesses. By appropriately designing the components involved in the coupling, and in particular the projections and recesses, unwanted coupling can be prevented.

[0019] For example, the projections and recesses for a revolving door drive with a lower drive power and a linkage element associated with this revolving door drive can be larger than for a revolving door drive with a comparatively higher drive power and a linkage element associated with this revolving door drive, or the projections and recesses for a revolving door drive with a lower drive power can be larger than for a revolving door drive with a comparatively higher drive power.

[0020] It goes without saying that the drive-performance-specific coding features can have counter-shaped, rounded corners on the basic shapes of the components involved in the coupling. For example, the components to be coupled together in a rotationally fixed manner can have a polygonal cross-section, for example, an octagonal one, with the respective corners rounded with different radii depending on the power class.

[0021] In particular, the radii of the rounded corners for a revolving door drive with a lower drive power and a linkage element assigned to this revolving door drive can be larger than for a revolving door drive with a comparatively higher drive power and a linkage element assigned to this revolving door drive, or the radii of the rounded corners for a revolving door drive with a lower drive power can be larger than for a revolving door drive with a comparatively higher drive power.

[0022] Preferably, the basic shapes are identical for all revolving door drives and linkage elements, or the basic shapes are identical for all revolving door drives. Thus, the mechanical coding features in the different performance classes differ only due to the drive performance-specific coding features.

[0023] Advantageously, the respective linkage element comprises a lever and a bushing attached to the lever, in particular a bushing welded to the lever, for receiving the shaft or shafts that can be coupled in a rotationally fixed manner. The mechanical coding features can be provided on the bushings of the linkage elements and the shafts of the revolving door drives.

[0024] The invention is explained below using an exemplary embodiment shown schematically in the drawings. In the drawings: Fig. 1 shows a revolving door with a drive system, Fig. 2 shows a detailed view of a shaft with an output member and an axle and of a linkage element with a bushing, Fig. 3(a) shows a cross-sectional view of an example of a bushing and an axle of a drive system according to the invention of performance class S, Fig. 3(b) shows a cross-sectional view of an example of a bushing and an axle of a drive system according to the invention of performance class M, Fig. 3(c) shows a cross-sectional view of an example of a bushing and an axle of a drive system according to the invention of performance class L and Fig. 4 shows a cross-sectional view of an example of a bushing and an axle of a drive system according to the invention, which have rounded corners as drive performance-specific coding features.

[0025] First, Fig. 1The basic structure and components of a drive system 10 for a revolving door 50 are shown. The revolving door 50 has a leaf 51, which is rotatably mounted on a frame (not shown) by means of hinges 55. A rail 53 is attached to the leaf 51.

[0026] In the present example, the drive system 10 comprises an electric revolving door drive 11 with an electric motor mounted on the wall above the leaf 51. The revolving door drive 11 has a shaft 13, via which the drive power of the revolving door drive 11 is delivered in the form of a torque. The drive power is transmitted to the shaft 13 in a generally known manner, which will not be described in detail here.

[0027] As in Fig. 2As shown, the shaft 13 is designed in several parts and has an output member 29 and an axle 25, which in this example prevent axial displacement via a screw 27 and a disk 26 and are rotationally fixed to one another due to a toothing on the inner circumference of the output member 29 and on the outer circumference of the axle 25. By means of a further screw 28, the axle 25 is also connected to an end section of a lever 21 of a linkage element 15. The linkage element 15 is thus rotationally fixedly coupled to the shaft 13 via the axle 25. A bushing 23 is provided between the axle 25 and the lever 21, which can in particular be a welded bushing welded to the lever 21 as part of the linkage element 15. The other end of the lever 21 runs, as in Fig. 1 shown, in the rail 53, for example by means of a sliding block not shown.

[0028] The drive system 10 is designed as a modular system. This means that the system 10 comprises several differently dimensioned revolving door drives 11, so that, depending on the revolving door and application, a revolving door drive 11 of varying power can be selected from the revolving door drives 11 and installed with the revolving door. Accordingly, the drive system also comprises differently dimensioned linkage elements 15, with each revolving door drive 11 being assigned a linkage element 15, since the performance class of the respective linkage element 15 must be matched to the respective mechanical load and thus to the performance of the revolving door drive 11 in order to avoid overloading the respective linkage element 15 and resulting damage.

[0029] In the present exemplary embodiment, the drive system 10 has three performance classes S, M, and L, wherein the revolving door drive 11 of performance class L is the most powerful and the revolving door drive 11 of performance class S is the weakest of the revolving door drives 11, and the revolving door drive 11 of performance class M is located between the two other revolving door drives 11 in terms of its drive power. Since a sufficiently dimensioned articulation element 15 with regard to its performance class must be used for each revolving door drive 11 in order to avoid excessive stress and resulting damage, the drive system 10 also has three articulation elements 15 of the same classes S, M, and L, so that each articulation element 15 is assigned to the revolving door drive 11 of the corresponding performance class.

[0030] As from Fig. 3(a) to 3(c) as well as Fig. 4As can be seen, the invention ensures that although higher-class linkage elements 15 can also be coupled with weaker revolving door drives 11, the reverse is not possible in order to avoid overloading. In the present examples, mechanical coding features are provided on the axis 25 and on the bushing 23 of the linkage element 15.

[0031] The mechanical coding features include, on the one hand, the basic shapes of the components involved in the coupling, namely the bushing 23 and the axle 25, which have opposite cross-sections. In this case, these components have an octagonal basic shape in their inner and outer cross-sections, respectively. On the other hand, the mechanical features include additional drive-performance-specific coding features 17, 19 in the form of corresponding projections 19 and recesses 17, as shown in Fig. 3(a) to 3(c) shown, or in the form of rounded corners 17, 19, as in Fig. 4The additional drive power-specific coding features 17, 19 therefore differ depending on the power class and thus have the special task of preventing the combination of a too weak linkage element 15 with a too strong revolving door drive 11. The drive power-specific coding features 17, 19 are in Fig. 3(a) to 3(c) on the straight sections of the octagonal basic shape. In Fig. 4 In contrast, the drive-performance-specific coding features 17, 19 are located at the corners of the octagonal basic shape. In principle, it is also conceivable to combine drive-performance-specific coding features 17, 19 at the straight sections and the corners. It is also understood that other basic shapes of the respective inner and outer circumferences are also possible.

[0032] Depending on the respective class S, M or L, the mechanical drive power-specific coding features 17, 19 are of different sizes. Fig. 3(a) a bushing 23 and an axle 25 of a shaft 13 of category S. The drive power-specific coding features 17, 19 are compared to Fig. 3(b) , which shows a bushing 23 and an axis 25 of a shaft 13 of category M, is more pronounced. In Fig. 3(c) the drive power-specific coding features 17 in the form of projections 19 and recesses 17 are completely missing.

[0033] This leads to the bushing 23 of the linkage element 15 also being Fig. 3(c) can be combined with the axis 25 of the shaft 13 of categories S and M. However, this is not possible conversely, since the projections 19 on the bushings 23 of classes S and M would strike the material of the axis 25 of the shaft 13 of class L.

[0034] In the embodiment according to Fig. 4The problem is solved by designing the drive-power-specific coding features 17, 19 as rounded corners. The radius of the rounded corners can be varied, with class S having the largest radius and class L the smallest radius. Fig. 4 but only shows one of these classes.

[0035] Further alternative designs are conceivable. For example, the drive-power-specific coding features 17, 19 can vary due to their shape, size, and / or position.

[0036] While the embodiments shown here show the coding features including the drive power-specific coding features 17, 19 on the bushing 23 and the axle 25, these can instead also be provided, for example, on the output member 29 and the axle 25, in which case the axle 25 is to be supplied in a package with replacement linkage elements 15 in order to prevent the replacement linkage element 15 from being combined with the shaft 13 of a more powerful revolving door drive 11. List of reference symbols

[0037] 10Drive system 11Revolving door drive 13Shaft 15Articulating element 17Coding features 19Coding features 21Lever 23Bushing 25Axle 27Screw 29Output link 50Revolving door 51Leaf 53Rail 55Door hinge

Claims

1. Drive system (10) for revolving doors (50), comprising a plurality of revolving door drives (11), in particular automatic revolving door drives, each having a shaft (13) for delivering a drive power and which differ from one another in terms of their drive power, so that a revolving door drive (11) can be selected from the revolving door drives (11) based on its drive power for the respective revolving door (50), and a plurality of articulation elements (15), wherein the respective articulation element (15) can be connected to a leaf (51) or a frame of the respective revolving door (50) via a rail (53) or a bearing block, wherein the articulation elements (15) differ from one another and each articulation element (15) is assigned to one of the revolving door drives (11), wherein the respective articulation element (15) is only connected to the shaft (13) of the respective assigned revolving door drive (11) and the shaft(s) (13) of the revolving door drives (11) with lower drive power,but cannot be coupled in a rotationally fixed manner to the shaft(s) (13) of the revolving door drives (11) with higher drive power.

2. Drive system (10) for revolving doors (50), comprising a plurality of revolving door drives (11), in particular automatic revolving door drives, each having a shaft (13) for delivering a drive power and which differ from one another in terms of their drive power, so that a revolving door drive (11) can be selected from the revolving door drives (11) based on its drive power for the respective revolving door (50), and a plurality of articulation elements (15), wherein the respective articulation element (15) can be connected to a leaf (51) or a frame of the respective revolving door (50) via a rail (53) or a bearing block, wherein the articulation elements (15) differ from one another and each articulation element (15) is assigned to one of the revolving door drives (11) and can be coupled in a rotationally fixed manner to the shaft (13) of the assigned revolving door drive (11),wherein the shafts (13) each have an axle (25) and an output member (29) associated with the axle (25), and the respective axle (25) can be coupled in a rotationally fixed manner only to the respectively associated output member (29) and the output member(s) (29) of the shafts (13) of the revolving door drives (11) with lower drive power, but not to the output member(s) (29) of the shafts (13) of the revolving door drives (11) with higher drive power.

3. Drive system (10) according to claim 1 or 2, characterized in thatfor the rotationally fixed coupling, the shafts (13) and the articulation elements (15) each have mechanical coding features which, on the one hand, have opposing basic shapes in cross-section and, on the other hand, have additional drive-power-specific coding features (17, 19) for the revolving door drive(s) (11) which do not have the highest drive power and the articulation element(s) (15) assigned to these revolving door drives (11), or in that for the rotationally fixed coupling, the axles (25) and the output members (29) each have mechanical coding features which, on the one hand, have opposing basic shapes in cross-section and, on the other hand, have additional drive-power-specific coding features (17, 19) for the revolving door drive(s) (11) which do not have the highest drive power.

4. Drive system (10) according to claim 3, characterized in thatthe drive power-specific coding features (17, 19) have one or more projections (19) and one or more counter-shaped recesses (17) on the components (13, 15; 25, 29) involved in the rotationally fixed coupling.

5. Drive system (10) according to claim 4, characterized in that the projections (19) and recesses (17) for a revolving door drive (11) with a lower drive power and a linkage element (15) assigned to this revolving door drive (11) are larger than for a revolving door drive (11) with a higher drive power in comparison thereto and a linkage element (15) assigned to this revolving door drive (11), or that the projections (19) and recesses (17) for a revolving door drive (11) with a lower drive power are larger than for a revolving door drive (11) with a higher drive power in comparison thereto.

6. Drive system (10) according to one of claims 3 to 5, characterized in thatthe drive power-specific coding features have counter-shaped rounded corners (17, 19) on the basic shapes of the components (13, 15; 25, 29) involved in the coupling.

7. Drive system (10) according to claim 6, characterized in that the radii of the rounded corners (17, 19) for a revolving door drive (11) with a lower drive power and a linkage element (15) assigned to this revolving door drive (11) are larger than for a revolving door drive (11) with a comparatively higher drive power and a linkage element (15) assigned to this revolving door drive (11), or that the radii of the rounded corners (17, 19) for a revolving door drive (11) with a lower drive power are larger than for a revolving door drive (11) with a comparatively higher drive power.

8. Drive system (10) according to one of claims 3 to 7, characterized by that the basic shapes for all revolving door drives (11) and linkage elements (15) are identical, or thatthe basic shapes for all revolving door drives (11) are identical.

9. Drive system (10) according to one of the preceding claims, characterized in that the respective articulation element (15) has a lever (21) and a bushing (23) attached to the lever (21) for receiving the shaft (13) or shafts (13) which can be coupled in a rotationally fixed manner.

10. Drive system (10) according to claim 9, characterized in that the mechanical coding features are provided on the bushings (23) of the articulation elements (15) and the shafts (13) of the revolving door drives (11).

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