Door drive comprising a motor unit having an advantageous basic shape

Abstract

The invention relates to a door drive (100) for being arranged at or in connection with a door installation, by means of which at least one door leaf element of the door installation can be moved, the door drive having a motor unit (1) which has a housing (10) in which a stator (11) is accommodated stationary and in which a rotor (12) is arranged in rotatable movement, the rotor having an output shaft (13), wherein the output shaft (13) is placed in a drive-effective connection with the door leaf element. According to the invention, the motor unit (1) has the basic shape of a cuboid (14), which is formed at least by means of two housing halves (15, 16) which are connected to one another.

Description

Technical Field

[0001] This invention relates to a door actuator for installation at or connected to a door facility, by means of which at least one door leaf element of the door facility is movable. The door actuator has a motor unit with a housing in which a stator is statically housed, and a rotor is rotatably disposed within the housing. The rotor has an output shaft capable of being driven into effective connection with the door leaf element. Furthermore, this invention relates to a door facility having such a door actuator, the door facility having at least one door leaf element to which the door actuator is driven into effective connection. Background Technology

[0002] A door actuator for installation at a door facility is known from DE 10 2008 046 062 A1, and the actuator is used to move the door leaf element of the door facility, which is configured as an automatic sliding door. The door actuator has a motor unit with a housing, and a gearbox unit is mounted on the housing of the motor unit, the gearbox unit being configured as a worm gear drive. Thereby, the motor unit is designed as a high-speed rotating motor, and the gearbox unit reduces the high rotational speed of the motor unit's rotor to a lower rotational speed for driving a pulley mounted on the output shaft of the gearbox unit.

[0003] The toothed belt is guided by a pulley and connects to the door leaf element of the automatic sliding door. Therefore, the motor unit is designed to rotate rapidly, and the speed must be reduced to the pulley. This necessitates a gearbox unit integrated with the motor, requiring additional structural space and complicating the construction of the door actuator. The spatial dimensions of the door actuator must be matched to the necessity of the gearbox unit, and because the motor has a basic cylindrical shape, it occupies structural space that cannot be optimally utilized in relation to its installation environment. The same applies to worm gear drives, especially when combined with a motor, which are very space-intensive.

[0004] DE 10 2014 115 932 A1 discloses another door actuator, which, as a basic unit, has a one-piece square body with recesses to accommodate the motor unit and transmission stage. Additional recesses and openings are provided in the frame to accommodate control mechanisms, power supplies, etc. The square body thus forms a housing that serves as a carrier for the various components of the door actuator and is integrally and to a certain extent formed over the entire dimensions of the actuator.

[0005] In principle, when a door actuator is configured to be located at or connected to a door facility, the goal is to make the door actuator as compact and small in size as possible, for example, by avoiding the inclusion of a gearbox unit or gearbox stage within the door actuator. The door actuator is typically mounted on a linearly movable door leaf element of an automatic sliding door facility and has a load-bearing profile that forms the basic body of the door facility. The door actuator is integrated into the load-bearing profile, and the door leaf element is similarly guided linearly. A toothed belt is typically used as the connection mechanism between the door actuator and the door leaf element, although other traction mechanisms, such as chain connections, are also feasible. The door actuator here forms its own structural unit with at least one motor, power supply, and control mechanism, which is integrated into the door facility by being located at the load-bearing profile.

[0006] In order to construct the load-bearing profile together with the corresponding baffle, housing or other components in the smallest possible form, it is advantageous, and especially so, to construct the door actuator itself as compactly as possible and in a small size. However, because the door leaf element made of glass will have a large weight, the door actuator must have a high power density in order to be able to accelerate such the door leaf element strongly and also decelerate it again, so that the door facility with large door leaf elements can still achieve adequate dynamics.

[0007] For high power density, and especially low-noise operation, a combination of a motor unit and a toothed belt as a direct drive is suitable. The pulley is directly mounted on the output shaft of the motor unit, and the toothed belt is placed on the pulley, which in turn is directly connected to the blade element. Therefore, the door drive can operate with minimal noise because high motor speeds are not required, and through appropriate design of the motor unit, a sufficiently high power density can be provided to strongly accelerate and decelerate, for example, 200kg to 250kg, the blade element for operating an automatic sliding door.

[0008] Motor transmission units with a cylindrical motor external shape and a screw-driven linear actuator transverse to it cannot achieve particularly high integration density, especially regarding the output power available at the output shaft. Furthermore, it becomes difficult to further compactly arrange the power supply, control mechanisms, and operating components while maintaining a high integration density. Summary of the Invention

[0009] The object of this invention is to provide a door actuator with a motor unit having high integration density and high power density, wherein the motor, in combination with at least one door leaf element, should be configured as a direct actuator. Furthermore, a high integration density of the door actuator should also be achieved when the motor unit is integrated with a power supply and control mechanism, as well as with other components, such as operating elements. Additionally, it should be considered that the door actuator can be integrated into the load-bearing profile of the door installation with minimal space requirements, particularly so that the latter can be constructed with a smaller size.

[0010] The objective is achieved according to a door device of the present invention, the door device having a door actuator disposed at or connected to the door device, by means of which at least one door leaf element of the door device is movable, the door actuator having a motor unit having a housing in which a stator is statically housed, and wherein a rotor is rotatably disposed in the housing, the rotor having an output shaft wherein the output shaft is drivably connected to the door leaf element, wherein the motor unit has a basic cuboid shape, the cuboid being formed by at least two housing halves connected to each other, wherein the stator and the rotor are internally housed between the housing halves, and / or wherein the housing halves are shell-shaped and indirectly or directly abut each other, wherein the cuboid has a length edge, a width edge, and a height edge, wherein the length edge is greater than the width edge and / or wherein the width edge is greater than the height edge. Advantageous improvements of the invention are given in the description.

[0011] The present invention includes the following technical teachings: a motor unit has a basic cuboid shape, which is formed by at least two interconnected housing halves.

[0012] In the context of this invention, a cuboid is a body bounded by six rectangular faces, wherein the rectangular faces should be substantially, but not entirely, flat, i.e., they may have molded portions, arched portions, inclined portions, ribs, etc. In this regard, in the context of this invention, the cuboid shape of the motor unit should in any case be understood approximately in a mathematical sense; a rectangular body with slight angular and shape deviations therefore still falls under the term cuboid, i.e., it remains a mathematical term for a cuboid. Because according to this invention, only the basic shape of the motor unit should form a cuboid, and the basic shape can also be understood as an envelope shape, while the housing of the motor unit precisely depicts the envelope shape of the cuboid.

[0013] The motor unit constructed according to the invention can be advantageously integrated into the door actuator in a cuboid shape, and the formed sides, end faces, and flat rear side enable a simple construction of the door actuator along with other directly adjacent components, particularly components such as power supplies and control mechanisms. In particular, the cuboid body can be advantageously positioned within or on the support profile, allowing the door actuator as a whole to be designed with a smaller overall size.

[0014] The housing halves can be constructed in a semi-shell shape, and the housing halves can be connected to each other, thus forming a complete cuboid housing body. The housing halves do not necessarily have to be precisely formed as half of the housing, and the interface between the housing halves does not necessarily lie at half the height of the vertical edge of the cuboid. In this regard, housing halves can also be provided, which are marked with different dimensions, configurations, and design dimensions, and which can be arranged on and connected to each other in such a way that a cuboid for forming the housing is produced, thereby forming the basic shape of the motor unit.

[0015] The housing halves are advantageously configured such that at least the stator and rotor are internally received between the housing halves. In particular, the housing halves can be shell-shaped, and the housing halves are connected to each other indirectly or directly. If the housing halves are directly connected to each other, the surrounding generally rectangular edges of the respective housing halves overlap and join together. When the housing halves are indirectly connected to each other, intermediate elements, such as sealing elements, can also be provided between the housing halves.

[0016] Particularly advantageously, the cuboid has a length edge, a width edge, and a height edge, wherein the length edge is greater than the width edge and / or wherein the width edge is greater than the height edge. For example, the length of the width edge is 70% to 98%, particularly 85% to 95%, of the length of the length edge. The length of the height edge is 30% to 60%, particularly 40% to 50%, of the length of the length edge. If the length of the length edge is, for example, 100 mm, then the width edge has a length of, for example, 90 mm, and the height edge has a length of, for example, 40 mm to 50 mm.

[0017] If the width edge has a smaller dimension than the length edge, then the motor unit can be integrated into the door actuator in such a way that the width edge extends along a vertical line, so that the door actuator can be designed to be mounted on a door leaf element with a small structural height, which is determined by the structural height of the door actuator, and the structural height of the door actuator is determined by the width of the motor unit, i.e. by the length of the width edge.

[0018] Furthermore, advantageously, the length and width edges are extended at the end face, with the output shaft extending vertically from the end face. A pulley is applied to the extended section of the output shaft, and the end face can be configured without a fixing mechanism, such that the belt can be guided as close as possible to the end face as the pulley is guided up to it.

[0019] Further advantageously, the door actuator has at least one power supply and at least one control mechanism, wherein the power supply and control mechanism are at least indirectly disposed on opposite sides of the cuboid, the opposite sides extending via the width and height edges of the cuboid. In this regard, the power supply and control mechanism are disposed in an extension in the direction of the length edge of the cuboid of the motor unit, which is advantageous when the length edge of the motor unit extends parallel to the longitudinal direction of the load-bearing profile of the door actuator. In this direction, the integration of the door actuator is not as structurally space-critical as in the lateral direction thereto, such that the length edge has the maximum dimension of the cuboid of the motor unit. The indirect placement of the power supply and / or control mechanism at the motor unit involves a configuration in which at least one additional component exists between the power supply and / or control mechanism and the motor unit, such as a retainer or flange.

[0020] It is also advantageous that the motor unit is electrically insulated from the power supply and / or control mechanism, allowing additional insulating elements to be attached to the side of the motor unit.

[0021] Further advantageously, a first flange element is provided, disposed on a first side and housing the power supply, and / or a second flange element is provided, disposed on a second side and housing the control mechanism. In particular, the motor unit is thus held securely within the door actuator via both flange elements. By arranging the flange elements on the sides, the end face can be configured without a fixing mechanism and, in particular, without flange elements, allowing the toothed belt positioned above the pulley to extend freely and as close as possible to the top of the end face.

[0022] The basic body of the door actuator is particularly advantageously configured with a load-bearing profile, such as an L-shaped aluminum profile, and the motor unit can be oriented relative to the load-bearing profile with respect to a subsequent mounting position and positioned at the load-bearing profile such that the output shaft has a horizontal extension. This results in the extension of a belt with vertically overlapping belt bundles. This configuration is advantageous for the movement of the engaging elements and, advantageously, for the integration of a blocking device for the door leaf element, which is connected to the belt.

[0023] The flange element is configured such that it is fixed to the load-bearing profile, and the mounting unit is positioned on the load-bearing profile by means of the flange element. The flange element is formed from a plate member manufactured by a bending method, the plate member being configured such that a motor can be mounted in the load-bearing profile via its side by means of the flange element, and the plate member simultaneously houses a power supply on one side of the motor unit and a control mechanism on the opposite side of the motor. Furthermore, the operation and display unit and other components for operating the door actuator can also be housed by means of the flange element.

[0024] The stator of the motor unit has a generally circular basic shape, forming corner regions within the cuboid body. These corner regions contain threaded holes for mounting flange elements and / or screw mechanisms for tightening the overlapping halves of the housing and / or for tightening the stator at the housing halves. The design of the motor unit with its generally annular stator and cuboid housing advantageously allows for the integration of fixing mechanisms in the corner regions, resulting in a high spatial integration density for the motor unit itself while maintaining space utilization in the remaining structural areas. The sides feature ribbed structures for further improved heat dissipation, thereby not hindering the placement of flange elements.

[0025] Although the stator has smaller deviations than screw receptacles and a substantially annular basic structure, and the stator is housed in at least one housing half such that a heat transfer gap, at least partially surrounding the housing area, is formed between the radially outer side of the stator and the inner side of the housing half. This heat transfer gap is designed, for example, with a value between 0.05 mm and 0.1 mm, to facilitate heat transfer from the stator to at least one or both housing halves, resulting in a transition fit between the stator and the housing area in one or both housing halves. Heat generated in the stator by the operation of the motor unit can be advantageously transferred to the housing half and should be discharged to the environment from the housing half.

[0026] Further advantageously, the stator has a face section and two opposing outer sides of a cuboid, wherein the face section mates with window-shaped openings in the opposing outer sides of the cuboid. Here, at least one face section of the stator is in heat transfer contact with the load-bearing profile through the window-shaped opening. Alternatively or additionally, at least one face section of the stator can be in heat transfer contact with a separate cooling element through the window-shaped opening.

[0027] The present invention also relates to a door facility having a door actuator including the features described above. The door facility may have a connecting element for connection to a door leaf element. Alternatively or additionally, the door facility may have at least one door leaf element to which the door actuator is in an actuated connection.

[0028] For example, the door device can be configured as a sliding door device. The sliding door device can include a belt, particularly a toothed belt. A connecting element can be connected to the belt, at least indirectly. The connecting element can be configured as a rotating body, particularly as a rolling slider. The connecting element can travel in a track, particularly in a track of a load-bearing profile. The belt can be tensioned between the pulleys of the door device. One of the pulleys can be configured as the pulley of a door actuator according to the invention. Attached Figure Description

[0029] Other improvements to the invention are illustrated in detail below, together with a description of preferred embodiments thereof, with reference to the accompanying drawings. The drawings show:

[0030] Figure 1 A general diagram of a gate driver having a motor unit with a structural form according to the invention is shown.

[0031] Figure 2 A perspective view of the motor unit according to the present invention is shown.

[0032] Figure 3 Showing according to Figure 2 A perspective view of the motor unit, with one housing half removed from the view, and

[0033] Figure 4 This shows a view of another housing half of a motor unit with a stator and output shaft. Detailed Implementation

[0034] Figure 1 A general view of the door actuator 100 is shown, which, as it can be installed in buildings, should also include installation on ships and in aircraft, and this type of door actuator 100 is used, for example, as an actuator for automatic sliding door systems. The basic structure of the door actuator 100 forms a load-bearing profile 27, which is shown shortened for a simpler view. Furthermore, the main upper portion of the L-shaped load-bearing profile 27 is shown cut open so that other important components of the door actuator 100 herein are visible.

[0035] As a central component, the door actuator 100 has a motor unit 1, which has a basic cuboid shape 14 that forms the housing 10 of the motor unit 1. To enable output and connection to door leaf elements (not shown in detail) of the door arrangement, a pulley 36 is provided at the motor unit 1, on which a toothed belt can be placed to ultimately establish connection with one or more door leaf elements, such as glass sliding elements.

[0036] Adjacent to the motor unit 1, the door actuator 100 has a power supply 21 and a control mechanism 22, which are disposed on opposite sides of the motor unit 1. The motor unit 1 is fixed to the support profile 27 by means of a first flange element 25, which also houses the power supply 21. Furthermore, the motor unit 1 is connected to the support profile 27 by means of a second flange element 26, which also houses the control mechanism 22. Alternatively, it is feasible to have a single flange to accommodate at least the motor unit 1, the power supply 21, and the control mechanism 22. It is also feasible for the motor unit 1, the power supply 21, and / or the control mechanism 22 to have separate flange elements associated with each other for placement in or on the support profile 27.

[0037] Figure 2 A perspective view of a separate motor unit 1 with a housing 10 is shown, and a pulley 36 for coupling a toothed belt over the end face 20 of the housing 10 is present on the upper side outside the housing 10 in the view. The housing 10 of the motor unit 1 has a first upper housing half 15 and a second lower housing half 16, which are constructed of the same type, for example, within the scope of the invention, but not necessarily of the same type. Laterally, the housing 10 is defined by a first side 23 and an opposing second side 24, and flange elements 25 and 26 may be provided at sides 23 and 24, which... Figure 1 As shown in the image.

[0038] The cuboid 14 formed by the housing 10 has corner regions 28, and threaded holes 29 are introduced in the respective corner regions 28 for fixing flange elements 25, 26 by means of screw elements, wherein the two threaded holes 29 are exemplarily labeled with numbers. In addition, there are screw devices 30 in the corner regions for tightening the housing halves 15 and 16 together.

[0039] The cuboid 14 is defined by the length edge 17, the width edge 18, and the height edge 19, wherein the side surfaces 23 and 24 are unfolded by the width edge 18 and the height edge 19.

[0040] The front face, unfolded by the length edge 17 and the height edge 19, has a window-shaped opening 27. A stator face section 33, not shown in the view, extends from this opening. Regarding the stator 11, see reference to... Figure 3 The outward-facing portion 33 of the stator 11 is used to contact other body parts, such as the load-bearing profile 27 or other separate cooling bodies, in a heat transfer manner. Thus, although the housing 10 is substantially closed and configured with upper and lower housing halves 15, 16, the stator 11 is placed in direct heat transfer contact with the components surrounding the motor.

[0041] according to Figure 3In the view, the stator 11 is tightened to the lower housing half 16 by means of a screw device 31, and corresponding face sections 33 are provided oppositely on the front and rear sides of the stator 11, which form the face sections of the housing of the motor unit 1 as described above.

[0042] By removing the first housing half 15, the stator 11 together with the rotor 12 disposed within the stator 11 are shown, wherein the rotor 12 is integrally formed with the output shaft 13, which extends from the upper housing half 15, and the portion of the output shaft 13 extending away from the end face 20 of the housing 10 accommodates the pulley 36.

[0043] and Figure 3 The junction, Figure 4 Another view shows the lower housing half 16, where the rotor 12 along with the output shaft 13 is also shown. Within housing half 16, but also in housing half 15 (not shown in detail), there is a generally annular receiving region 38 in which the stator 11 is housed. Figure 3 The diagram shows a heat transfer gap 32, which is derived as an annular gap that at least partially surrounds the outer side of the stator 11 and the inner side of the receiving region 38.

[0044] When motor unit 1 is running, the stator 11 heats up by energizing the windings (not shown in detail) on the stator 11, and the heat from the stator 11 can be transferred to the housing halves 15 and 16 via a very small heat transfer gap 32. The heat transfer gap 32 is advantageously configured as a transition fit. A circuit card 39 is located on the rear side of the cuboid 14 opposite the end side 20, on which printed wires are provided, specifically for contacting and connecting the windings of the stator 11. The circuit card 39 is fixed to the housing 10 of motor unit 1 by means of a retaining element.

[0045] The invention is not limited to the preferred embodiments given above in its implementations. Rather, multiple variations are conceivable, and the solutions shown can also be used in principle in different types of implementations. All features and / or advantages known from the claims, specification, or drawings, including structural details or spatial arrangements, are inventive and in different combinations.

[0046] List of reference numerals in the attached diagram:

[0047] 100-gate driver

[0048] 1 Motor Unit

[0049] 10. Shell

[0050] 11 Stator

[0051] 12 rotors

[0052] 13 Output shaft

[0053] 14. Cuboid

[0054] 15. Shell half

[0055] 16. Shell half

[0056] 17. Length edge

[0057] 18-width edge

[0058] 19 Height Edges

[0059] 20 end face

[0060] 21 Power Supply

[0061] 22 Control mechanism

[0062] 23 Side View

[0063] 24 Side View

[0064] 25 First flange element

[0065] 26 Second flange element

[0066] 27 Load-bearing profiles

[0067] 28-corner area

[0068] 29 Threaded hole

[0069] 30 Screw assembly

[0070] 31. Screw assembly

[0071] 32 Heat transfer gap

[0072] 33 Facial segments

[0073] 34 Outer side

[0074] 35. Empty space

[0075] 36 Belt pulley

[0076] 37. Window-shaped open space

[0077] 38 Accommodation Area

[0078] 39 Circuit Cards

Claims

1. A door facility having a door actuator (100), the door facility having at least one connecting element for connection with a door leaf element and / or having at least one door leaf element, the door actuator (100) being effectively connected to the door leaf element in an actuated manner, wherein the at least one door leaf element of the door facility is movable by means of the door actuator, wherein the door actuator has a motor unit (1), the motor unit having a housing (10) in which a stator (11) is statically housed, and wherein a rotor (12) is rotatably disposed in the housing (10), the rotor having an output shaft (13), wherein the output shaft (13) is effectively connected to the door leaf element in an actuated manner. in, The motor unit (1) has a basic cuboid shape (14), which is formed by at least two interconnected housing halves (15, 16), wherein the stator (11) and the rotor (12) are internally housed between the housing halves (15, 16). The characteristic feature is that the shell halves (15, 16) are shell-shaped and directly abut each other, such that the surrounding generally rectangular edges of the respective shell halves overlap and join together. And the cuboid (14) has a length edge (17), a width edge (18) and a height edge (19), wherein the length edge (17) is greater than the width edge (18) and / or wherein the width edge (18) is greater than the height edge (19).

2. The door facility according to claim 1, Its features are, The length of the width edge (18) is 70% to 98% and / or 85% to 95% of the length of the length edge (17), and / or the length of the height edge (19) is 30% to 60% and / or 40% to 50% of the length of the length edge (17).

3. The door facility according to claim 1 or 2, Its features are, The length edge (17) and the width edge (18) unfold the end face (20), wherein the output shaft (13) extends vertically from the end face (20).

4. The door facility according to claim 1 or 2, Its features are, There is at least one power source (21) and control mechanism (22), wherein the power source (21) and the control mechanism (22) are at least indirectly disposed on opposite sides (23, 24) of the cuboid (14), wherein the opposite sides (23, 24) are extended via the width edge (18) and the height edge (19) of the cuboid (14).

5. The door facility according to claim 4, Its features are, A first flange element (25) is provided, which is located on a first side (24) and houses the power supply (21), and / or a second flange element (26) is provided, which is located on a second side (24) and houses the control mechanism (22), wherein the motor unit (1) is held in the door actuator (100) via the two flange elements (25, 26).

6. The door facility according to claim 5, Its features are, The basic body of the door driver (100) is formed by means of a support profile (27), wherein the motor unit (1) is oriented relative to the support profile (27) with respect to the subsequent mounting position, such that the output shaft (13) has a horizontal extension.

7. The door facility according to claim 6, Its features are, The flange elements (25, 26) are fixed to the bearing profile (27), so that the motor unit (1) is disposed on the bearing profile (27) by means of the flange elements (25, 26).

8. The door facility according to claim 5, Its features are, The stator (11) has a generally circular basic shape such that a corner region (28) is formed in the cuboid (14), wherein threaded holes (29) for mounting the flange elements (25, 26) and / or screw devices (30) for tightening the housing halves (15, 16) overlapping each other and / or screw devices for tightening the stator (11) at one of the housing halves (15, 16).

9. The door facility according to claim 1 or 2, Its features are, The stator (11) has an annular basic structure and is housed in at least one of the housing halves (15, 16), wherein a heat transfer gap (32) is formed between the radially outer side of the stator (11) and the inner side of the housing halves (15, 16) that is at least partially circumferential.

10. The door facility according to claim 6, Its features are, The stator (11) has a face section (33) on the opposite outer side (34) of the cuboid (14), wherein the face section (33) cooperates with a window-shaped opening (35) in the opposite outer side (34) of the cuboid (14).

11. The door facility according to claim 10, Its features are, At least one of the face segments (33) of the stator (11) passes through the window-shaped opening (35) and is placed in heat transfer contact with the load-bearing profile (27).

12. The door facility according to claim 10, Its features are, At least one of the face segments (33) of the stator (11) passes through the window-shaped opening (35) and is in heat transfer contact with a separate cooling body.

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