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 multiple revolving door drives.

[0002] A swing door operator 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 that is connected to the door leaf by means of a pivoting element, such that when the swing door operator is actuated, an opening force is exerted on the door leaf via the shaft and pivoting element. Alternatively, a swing door operator can also be mounted on the door leaf itself.

[0003] US 2020 / 340284 A1 describes a drive device comprising a revolving door drive with an intermediate piece for adjusting the angle of the door, which is arranged between the drive shaft and the lever.

[0004] DE 10 2005 029 625 A1 teaches a drive for a leaf of a door or window with an output shaft and with a lever for power transmission between the drive and the leaf, wherein the output shaft and the lever can be connected to each other in a rotationally fixed manner by an intermediate piece, and wherein the output shaft and the intermediate piece have a corresponding shaft toothing.

[0005] EP 1 482 118 A1 relates to a drive for doors and windows, comprising a shaft and a counterpart associated with the shaft, which are coupled in a rotationally fixed manner via a bevel gear.

[0006] Since different door classes require swing door operators with varying drive powers to provide different opening forces depending on the application and door weight, it is advantageous to design a modular drive system of the type mentioned above, allowing a suitable swing door operator to be selected for each swing door. The load acting on the pivot element also varies with the different drive powers of the operators, so such a modular system also requires levers with varying degrees of stability, each matched to the drive power of the respective swing door operator.

[0007] It is generally unproblematic to install a pivoting element with a swing door operator that can withstand higher torques than required for operation with that specific operator. This can even simplify repairs, as a technician doesn't always need to carry pivoting elements of every size. However, problems can arise if a pivoting element is installed and operated with a swing door operator that is not adequately sized for that operator, meaning its performance class is insufficient for that particular operator.

[0008] This can lead to damage to the linkage element, particularly due to overstressing.

[0009] The invention is based on the objective of providing a drive system for revolving doors in which the installation of a pivot element with an insufficient performance class for the respective revolving door drive is prevented.

[0010] This problem is solved 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 will become apparent from the description and the drawings.

[0011] The drive system according to the invention is designed for use with revolving doors, is designed as a modular system and comprises several revolving door drives, in particular automatic revolving door drives, each of which has a shaft for delivering drive power and which differ from one another in terms of 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 several pivot elements, wherein the respective pivot element can be connected to a leaf or frame of the respective revolving door via a rail or a bearing block, wherein the pivot elements differ from one another and each pivot 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 present, to the shaft(s) of the revolving door drives with lower drive power, but not, if present, to the shaft(s) of the revolving door drives with higher drive power.

[0012] According to a further aspect, the invention relates to a drive system for revolving doors, wherein the drive system is designed as a modular system, comprising several revolving door drives, in particular automatic revolving door drives, each having a shaft for delivering drive power and differing from one another in terms of 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 several pivot elements, wherein the respective pivot element can be connected to a leaf or frame of the respective revolving door via a rail or a bearing block, wherein the pivot elements differ from one another and each pivot element is assigned to one of the revolving door drives and can be coupled to the shaft of the assigned revolving door drive in a rotationally fixed manner.Each shaft has an axis and an associated output member, and each axis can only be coupled in a rotationally fixed manner to the associated output member and, if present, to the output member(s) of the shafts of the swing door drives with lower drive power, but not, if present, to the output member(s) of the shafts of the swing door drives with higher drive power.

[0013] For example, revolving door operators and linkage elements can be classified into different performance classes. These performance classes could be designated as S (small), M (medium), and L (large), resulting in three performance classes. However, there can also be more or fewer than three performance classes. The designations for the performance classes are arbitrary and serve only for illustrative purposes.

[0014] The phrase "if available" refers, for example, to the fact that the lowest-powered linkage element can be coupled to the shaft of the associated swing door operator in a rotationally fixed manner, but not to the shaft of a swing door operator with lower drive power, since a swing door operator with lower drive power than the associated swing door operator is not available in this case. Similarly, an axle to which an output member is assigned can be coupled to that output member in a rotationally fixed manner. However, if the assigned output member belongs to the shaft of the swing door operator with the lowest drive power among the swing door operators, then an output member of a shaft of a swing door operator with lower drive power is also not available in this case.The same applies to the linkage element with the highest performance class and to the axle that is assigned to the output member of the shaft of the revolving door drive with the highest drive power.

[0015] A drive system can be designed as an automatic revolving door drive, for example with an electric motor, but it can also be implemented using a door closer. In the case of a door closer, the drive can be represented, for example, by a spring that is tensioned when the door is opened, which relaxes when the holding force is released, thereby driving the closing process.

[0016] If the track is attached to the door leaf, the door operator is usually mounted on the corresponding wall. Alternatively, the track can also be mounted on the frame or the wall. In this case, the door operator is usually mounted on the door leaf. The pivoting element then allows the door operator to exert an opening force, thus opening the door.

[0017] The two distinct aspects of the present invention share the common feature that the rotationally fixed coupling ensures that each pivot element can only be rotationally fixed to the shaft of its respective associated swing door drive and to the shafts of swing door drives with lower drive power, but not to the shafts of swing door drives with higher drive power. This prevents a swing door drive from being combined with a pivot element that is not designed for a swing door drive of that power class. Any potential incorrect installation by the installer due to negligence is prevented by the fact that each pivot element cannot be coupled to the shafts of swing door drives with higher drive power. This, among other things, avoids overloading of the respective pivot element and the resulting repairs and downtime.The rotationally fixed coupling can, in principle, be provided between the shaft and the linkage element according to the first aspect, or between the output member and the axle according to the second aspect, which corresponds to a multi-part shaft, whereby, according to the second aspect, the linkage element is to be used as a spare part in principle together with the corresponding axle in the package, so that the coupling between the linkage element and the output member of the corresponding categories can be ensured.

[0018] According to the present invention, for example, a pivot element of the lowest performance class S could only be coupled to a swing door drive of the same performance class S in order to prevent mechanical overload of the pivot element. A pivot element of the medium performance class M, on the other hand, could be coupled to a swing door drive of performance classes S and M, whereas, correspondingly, a pivot element of the highest performance class L could be coupled to a swing door drive of all performance classes S, M, and L. It follows that the pivot element must always be of at least the same performance class as the corresponding swing door drive.While compatibility in one direction exists, in that linkage elements of higher performance classes can also be coupled with swing door drives of lower performance classes, reverse compatibility is undesirable and consequently not given, meaning that linkage elements of lower performance classes cannot be coupled with swing door drives of higher performance classes.

[0019] In a preferred embodiment, for rotationally fixed coupling, the shafts and the linkage elements each have mechanical coding features which, in cross-section, comprise on the one hand opposing basic shapes and, on the other hand, for the swing door drive(s) not having the highest drive power and the linkage elements assigned to these swing door drives, additional drive power-specific coding features, or the axles and the output members each have mechanical coding features for rotationally fixed coupling which, in cross-section, comprise on the one hand opposing basic shapes and, on the other hand, for the swing door drive(s) not having the highest drive power, additional drive power-specific coding features.For clarification, it should be noted that the mechanical coding characteristics of the shaft for the highest-powered swing door drive and the associated pivot element (i.e., the pivot element with the highest performance class) may also include additional drive-power-specific coding characteristics. However, this is not mandatory, as the required compatibility is guaranteed in only one direction even without them. The same applies to the mechanical coding characteristics of the output element and the axle for the highest-powered swing door drive.

[0020] In principle, the shafts and linkage elements, or the output links and axles, are equipped with drive-power-specific coding features. However, the shaft and linkage element, or the output link and axle, of a single power class—namely, the highest power class with the highest drive power—are not. This prevents coupling with incompatible components, even for this power class, as the latter are equipped with drive-power-specific coding features that prevent coupling. These drive-power-specific coding features thwart 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.

[0021] The drive-performance-specific coding features can include one or more projections and one or more opposing recesses on the components involved in the rotationally fixed coupling, i.e., on the shaft and linkage element or on the output member and axle. For example, the projections and recesses can correspond in number, position, shape, and / or size. If the projections and recesses are not opposing, coupling of the linkage element to the shaft may be prevented, for example, if the projections are larger or located in different positions than the recesses. By appropriately designing the components involved in the coupling, and in particular the projections and recesses, unintended coupling can be prevented.

[0022] For example, the projections and recesses for a revolving door drive with lower drive power and a pivoting element associated with this revolving door drive may be more pronounced than for a revolving door drive with higher drive power and a pivoting element associated with this revolving door drive, or the projections and recesses for a revolving door drive with lower drive power may be more pronounced than for a revolving door drive with higher drive power.

[0023] It is understood that the drive-performance-specific coding features may have opposing rounded corners on the basic shapes of the components involved in the coupling. Thus, the components to be coupled together in a rotationally fixed manner may, for example, have a polygonal cross-section, such as an octagon, with the respective corners being rounded with different radii depending on the performance class.

[0024] In particular, the radii of the rounded corners for a revolving door drive with lower drive power and a pivot element associated with this revolving door drive may be larger than for a revolving door drive with higher drive power and a pivot element associated with this revolving door drive, or the radii of the rounded corners for a revolving door drive with lower drive power may be larger than for a revolving door drive with higher drive power.

[0025] Preferably, the basic shapes for all swing door drives and pivot elements are identical, or the basic shapes are identical for all swing door drives. Thus, the mechanical coding characteristics in the different performance classes differ only due to the drive-performance-specific coding characteristics.

[0026] Advantageously, each linkage element has a lever and a bushing attached to the lever, in particular a bushing welded to the lever, for receiving the rotationally fixed shaft or shafts. The mechanical coding features can be provided on the bushings of the linkage elements and on the shafts of the revolving door drives.

[0027] The invention is explained below by way of example with reference to an embodiment shown schematically in the drawings. The drawings show: Fig. 1 a revolving door with a drive system, Fig. 2 a detailed view of a shaft with an output member and an axle and of a pivot element with a bushing, Fig. 3(a) 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) 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) 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 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.

[0028] First, it shows Fig. 1This section describes the basic structure and components of a drive system 10 for a revolving door 50. The revolving door 50 has a leaf 51 which is rotatably mounted on a frame (not shown) by means of hinges 55. A track 53 is attached to the leaf 51.

[0029] In this example, the drive system 10 comprises an electric revolving door drive 11 with an electric motor mounted on the wall above the door leaf 51. The revolving door drive 11 has a shaft 13 through which drive power is delivered in the form of torque. The transmission of the drive power to the shaft 13 occurs in a generally known manner, which will not be described in detail here.

[0030] As in Fig. 2As shown, the shaft 13 is designed in multiple parts and has an output member 29 and an axle 25, which in this example are prevented from axially displacing by a screw 27 and a washer 26 and are rotationally fixed relative to each other due to toothing on the inner circumference of the output member 29 and on the outer circumference of the axle 25. The axle 25 is also connected to an end section of a lever 21 of a linkage element 15 by a further screw 28. The linkage element 15 is thus rotationally fixed to the shaft 13 via the axle 25. A bushing 23, which can in particular be a welded bushing welded to the lever 21 as part of the linkage element 15, is provided between the axle 25 and the lever 21. The other end of the lever 21 runs, as shown in Fig. 1 shown, in rail 53, for example by means of a sliding block not shown.

[0031] The drive system 10 is designed as a modular system. This means that the system 10 comprises several swing door drives 11 of varying dimensions, allowing a swing door drive 11 of different strength to be selected and installed with the swing door, depending on the swing door and application. Accordingly, the drive system also includes differently dimensioned pivot elements 15, with each swing door drive 11 assigned a pivot element 15. This is because the performance class of each pivot element 15 must be matched to the respective mechanical load and thus to the performance of the swing door drive 11, in order to prevent overloading of the pivot element 15 and resulting damage.

[0032] In the present embodiment, the drive system 10 has three performance classes S, M, and L, wherein the swing door drive 11 of performance class L is the most powerful, the swing door drive 11 of performance class S is the least powerful, and the swing door drive 11 of performance class M is positioned between the other two swing door drives 11 in terms of its drive power. Since a sufficiently dimensioned pivot element 15 with respect to its performance class must be used for each swing door drive 11 to prevent overloading and resulting damage, the drive system 10 also has three pivot elements 15 of the same classes S, M, and L, so that each pivot element 15 is assigned to the swing door drive 11 of the corresponding performance class.

[0033] As from Fig. 3(a) to 3(c) as well as Fig. 4As can be seen, the invention ensures that while higher-class pivot 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 pivot element 15.

[0034] The mechanical coding features comprise, on the one hand, the basic shapes of the components involved in the coupling, namely the bushing 23 and the shaft 25, which have opposite cross-sectional shapes. 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 comprise 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-performance-specific coding features 17, 19 differ depending on the performance class and thus have the specific task of preventing the combination of an excessively weak pivot element 15 with an excessively powerful swing door drive 11. The drive-performance-specific coding features 17, 19 are shown in Fig. 3(a) to 3(c) provided for on the straight sections of the octagonal base. In Fig. 4 In contrast, the drive-performance-specific coding features 17 and 19 are located at the corners of the octagonal base shape. It is also conceivable to combine drive-performance-specific coding features 17 and 19 on the straight sections and at the corners. Furthermore, it is understood that other base shapes for the respective inner and outer circumferences are also possible.

[0035] Depending on the respective class S, M or L, the mechanical drive performance-specific coding features 17, 19 are expressed to varying degrees. Thus, it shows Fig. 3(a) a bushing 23 and an axle 25 of a shaft 13 of category S. The drive-performance-specific coding features 17, 19 are in comparison to Fig. 3(b) , which shows a bushing 23 and an axle 25 of a shaft 13 of category M, more pronounced. In Fig. 3(c) The drive-performance-specific coding features 17 in the form of protrusions 19 and recesses 17 are completely missing.

[0036] This leads to the fact that, for example, the bushing 23 of the linkage element 15 is also Fig. 3(c) It can be combined with the axle 25 of the shaft 13 of categories S and M. However, the reverse is not possible, as the projections 19 on the bushings 23 of classes S and M would meet the material of the axle 25 of the shaft 13 of class L.

[0037] In the exemplary embodiment according to Fig. 4The problem is solved by designing the drive-performance-specific coding features 17 and 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. Fig. 4 However, it only shows one of these classes.

[0038] Other alternative configurations are conceivable. For example, the drive-performance-specific coding features 17, 19 can vary due to their shape, size and / or position.

[0039] While the embodiments shown here depict the coding features, including the drive-performance-specific coding features 17, 19, on bushing 23 and shaft 25, these can instead, for example, also be provided on output member 29 and shaft 25, in which case the shaft 25 is to be supplied in a package with replacement pivot elements 15 to prevent the replacement pivot element 15 from being combined with the shaft 13 of a more powerful revolving door drive 11. Reference symbol list

[0040] 10 Drive system 11 Revolving door drive 13 Shaft 15 Linkage element 17 Coding features 19 Coding features 21 Lever 23 Bushing 25 Axle 27 Screw 29 Output member 50 Revolving door 51 Leaf 53 Rail 55 Door hinge

Claims

1. Drive system (10) for hinged doors (50), wherein the drive system is configured as a modular system, comprising a plurality of hinged door drives (11), in particular automatic hinged door drives, which each have a shaft (13) for delivering a drive power and which differ in terms of their drive power from each other, such that a hinged door drive (11) can be selected from the hinged door drives (11) on the basis of its drive power for the respective hinged door (50), and a plurality of articulation elements (15), wherein the respective articulation element (15) can be attached via a rail (53) or a bearing block to a leaf (51) or a frame of the respective hinged door (50), wherein the articulation elements (15) differ from each other, and each hinge element (15) is assigned to one of the hinged door drives (11), wherein the respective articulation element (15) can only be coupled fixedly for conjoint rotation to the shaft (13) of the respective associated hinged door drive (11) and to the shaft / shafts (13) of the hinged door drives (11) with a lower drive power, but not to the shaft / shafts (13) of the hinged door drives (11) with a higher drive power.

2. Drive system (10) for hinged doors (50), wherein the drive system is configured as a modular system, comprising a plurality of hinged door drives (11), in particular automatic hinged door drives which each have a shaft (13) for delivering a drive power and which differ in terms of their drive power from each other, such that a hinged door drive (11) can be selected from the hinged door drives (11) on the basis of its drive power for the respective hinged door (53), and a plurality of articulation elements (51), wherein the respective articulation element (50) can be attached via a rail (50) or a bearing block to a leaf (15) or a frame of the respective hinged door (15), wherein the articulation elements (15) differ from each other, and each articulation element (15) is assigned to one of the hinged door drives (11) and can be coupled fixedly for conjoint rotation to the shaft (13) of the assigned hinged door drive (11), wherein the shafts (13) each have an axle (25) and an output member (29) assigned to the axle (25), and the respective axis (25) can only be coupled fixedly for conjoint rotation to the respective assigned output member (29) and the output member or members (29) of the shafts (13) of the hinged door drives (11) with a lower drive power, but not to the output member or members (29) of the shafts (13) of the hinged door drives (11) with a higher drive power.

3. Drive system (10) according to Claim 1 or 2, characterized in that, for fixed coupling for conjoint rotation, the shafts (13) and the articulation elements (15) each have mechanical coding features, which firstly comprise basic shapes formed as counter-shapes in cross section and secondly comprise additional drive power-specific coding features (17, 19) for the hinged door drive or drives (11) which does / do not have the highest drive power and the articulation element or elements (15) which is / are assigned to these hinged door drives (11), or in that, for the fixed coupling for conjoint rotation, the axles (25) and the output members (29) each have mechanical coding features, which firstly comprise counter-shaped basic shapes in cross section and secondly comprise additional drive power-specific coding features (17, 19) for the rotary door drive or drives (11) which does / do not have the highest drive power.

4. Drive system (10) according to Claim 3, characterized in that the 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 fixed coupling for conjoint rotation.

5. Drive system (10) according to Claim 4, characterized in that the projections (19) and recesses (17) for a hinged door drive (11) with a lower drive power and an articulation element (15) assigned to this hinged door drive (11) are of larger design than for a hinged door drive (11) with a higher drive power in comparison to this and an articulation element (15) assigned to this hinged door drive (11), or in that the projections (19) and recesses (17) for a hinged door drive (11) with a lower drive power are of larger design than for a hinged door drive (11) with a higher drive power in comparison with this.

6. Drive system (10) according to one of Claims 3 to 5, characterized in that the 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 hinged door drive (11) with a lower drive power and an articulation element (15) assigned to this hinged door drive (11) are greater than for a hinged door drive (11) with a higher drive power in comparison to this and an articulation element (15) assigned to this hinged door drive (11), or in that the radii of the rounded corners (17, 19) for a hinged door drive (11) with a lower drive power are greater than for a hinged door drive (11) with a higher drive power in comparison to this.

8. Drive system (10) according to one of Claims 3 to 7, characterized in that the basic shapes for all hinged door drives (11) and articulation elements (15) are identical, or in that the basic shapes for all hinged 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 fixedly for conjoint rotation.

10. Drive system (10) according to Claims 3 and 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 hinged door drives (11).

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