EP2818619A1 - Device for regulating the closing sequence of a two-leaf revolving door assembly - Google Patents

Abstract

The invention relates to a device for regulating the closing sequence of a two-leaf revolving door system, which has an overhanging active leaf and a knocking out fixed leaf. The active leaf and the inactive leaf are each operatively connected to an output shaft of a drive device. Furthermore, a blocking device is provided, by means of which the active leaf can be locked or released depending on the position of the passive leaf by having a coupling point for a mechanical transmission element. The blocking device acts on a movable component of the drive device of the active leaf by having a brake drum coupled to the movable component via a freewheel bearing. The blocking device has two brake shoes, which are acted upon by at least one of the two brake shoes supporting the tension spring against each other on the brake drum.

Description

The invention relates to a device for regulating the closing sequence of a two-leaf revolving door system according to the preamble of patent claim 1.

From the DE 10 2006 028 875 B3 is a device for controlling the closing sequence of a two-leaf revolving door system, which has a sweeping leaf and an underpowering leaf, known. The active leaf and the inactive leaf are each operatively connected to an output shaft of a drive device. Furthermore, a blocking device is provided, by means of which the active leaf can be blocked or released, depending on the position of the passive leaf, by having a coupling point for a mechanical transmission element. The blocking device acts on a movable component of the drive device of the active leaf by having a brake drum coupled to the movable component via a freewheel bearing. The brake drum is encompassed by a one-piece brake pad, which is spring-loaded against the brake drum. The pivoting of a spreading element releases the brake pad from the brake drum.

The invention has for its object to provide a device for controlling the closing sequence of a two-leaf revolving door system, the blocking device is compact and easy to adjust in their braking force.

The object is solved by the features of patent claim 1.

The subclaims form advantageous embodiments of the invention.

The blocking device according to the invention has two brake shoes, which are supported by at least one between the two brake shoes Tension spring against each other are applied to the brake drum. As a result, an extremely compact construction is achieved, wherein the braking force is adjustable in the simplest way.

In an advantageous embodiment, the tension spring is designed as a helical compression spring, which is supported at one end on one brake shoe and the other end on a screwed into an internal thread of the other brake shoe clamping screw.

The bias of the tension spring is in the simplest way, namely adjustable by turning the clamping screw.

At least one expansion bolt operatively connected to the mechanical transmission element can be arranged between the front ends of the brake shoes, wherein the expansion bolt is arranged on a shaft parallel to its axis of rotation.

In an advantageous embodiment, two expansion bolts are provided, wherein the expansion bolts are arranged parallel and spaced from each other and the shank of the clamping screw engages between the expansion bolts, which has a space-saving effect.

The shank of the clamping screw can have a taper, at least in the region that extends through between the expanding pin, which makes it possible to pivot the shaft carrying the expanding pin.

In the following an embodiment in the drawing with reference to the figures will be explained in more detail.

Fig. 1

eine zweiflügelige Drehtüranlage mit einer Vorrichtung zur Regelung der Schließfolge in Frontansicht;

Fig. 2

eine schematische Darstellung einer Antriebseinrichtung mit Anordnung der erfindungsgemäßen Blockiereinrichtung;

Fig. 3

eine perspektivische Ansicht der erfindungsgemäßen Blockiereinrichtung mit geschlossenen Gehäuseelementen;

Fig. 4

eine Ansicht gemäß Fig. 3, jedoch ohne Deckel;

Fig. 5

eine Ansicht gemäß Fig. 4, jedoch ohne Bremstrommel und Freilauflager;

Fig. 6

eine Ansicht gemäß Fig. 5, jedoch ohne Gehäuse;

Fig. 7

eine Ansicht gemäß Fig. 5, jedoch aus einer anderen Perspektive;

Fig. 8

eine Ansicht gemäß Fig. 7, jedoch ohne Bremsbacken;

Fig. 9a

eine schematische Ansicht der mit den Spreizbolzen zusammenwirkenden Stirnkanten der Bremsbacken, in einem ersten Betriebszustand;

Fig. 9b

eine Ansicht gemäß Fig. 9a, jedoch in einem zweiten Betriebszustand;

Fig. 9c

eine Ansicht gemäß Fig. 9a und 9b, jedoch in einem dritten Betriebszustand.

Showing:

Fig. 1

a two-leaf revolving door system with a device for controlling the closing sequence in front view;

Fig. 2

a schematic representation of a drive device with arrangement of the blocking device according to the invention;

Fig. 3

a perspective view of the blocking device according to the invention with closed housing elements;

Fig. 4

a view according to Fig. 3 but without lid;

Fig. 5

a view according to Fig. 4 , but without brake drum and freewheel bearing;

Fig. 6

a view according to Fig. 5 but without housing;

Fig. 7

a view according to Fig. 5 but from a different perspective;

Fig. 8

a view according to Fig. 7 , but without brake shoes;

Fig. 9a

a schematic view of the cooperating with the expansion pin end edges of the brake shoes, in a first operating state;

Fig. 9b

a view according to Fig. 9a but in a second operating condition;

Fig. 9c

a view according to Fig. 9a and 9b but in a third operating state.

The Fig. 1 shows a two-leaf revolving door system 1 with a sweeping walking leaf 2 and a unterschlagenden stationary leaf 3, which are mounted on hinge-like fittings 4 about a respective vertical axis of rotation rotatably mounted on a stationary door frame 5. The active leaf 2 and the fixed leaf 3 are each operatively connected to a drive device 6, 7 designed as a revolving door drive, which are mounted in the upper horizontal region of the door frame 5.

In the housings 8, 9 of the drive means 6, 7 are each designed as output shaft 10, 11 formed with vertical axes of rotation output members, wherein the ends of the output shafts 10, 11 protrude from the housings 8, 9 respectively. At the lower, ie the active leaf 2 and the inactive leaf 3 facing the end of the output shafts 10, 11 each formed as a sliding arm 12, 13 power transmission elements are rotatably mounted. The other end of the sliding arm 12, 13 is in each case by means of a slider in each one in the region of the upper horizontal Edge of the active leaf 2 and the passive leaf 3 mounted slide rail 14, 15 guided linearly displaceable. A rotational movement of the output shaft 10, 11 of the drive means 6, 7 causes the sliding arm 12, 13 is pivoted and the active leaf 2 and the inactive leaf 3 are moved over the slide guided in the slide rail 14, 15.

The drive devices 6, 7 each have a control device, not shown here, which controls the movement of the drive means 6, 7, e.g. depending on sensor signals and / or manual switching operations. The control device may comprise a memory device in which the parameters required for operating the drive devices 6, 7 can be stored non-volatilely.

A device for regulating the closing sequence has the effect that, when the inactive leaf 3 is not in its closed position, the active leaf 2 can not be moved in the closing direction but remains in the at least partially open position until the inactive leaf 3 has reached its closed position. For this purpose, a blocking device 24 is provided, whose arrangement in the drive device 6 of the active leaf 2 in the Fig. 2 is shown.

As it is in the Fig. 2 is shown, the drive means 6 to an electric drive motor 16, the motor shaft 7 on the left side in the drawing with a gear 18 cooperates, which, for example, as shown here, may be formed as a worm-spur gear. The transmission 18 interacts with the output shaft 10 of the drive device 6 mounted in a bearing 19 so that a rotational movement of the motor shaft 7 causes a rotational movement of the output shaft 10 that is reduced by the transmission 18. With a step of the transmission 18, for example by means of a pulley operatively connected to a gear stage, in addition, a force transmission element 20 cooperates, which engages in a cylinder 22 and is connected there to a spring plate 21. Between the spring plate 21 and a wall in the end region of the cylinder 22, a closing spring 23 is supported and thus acts on the force transmission element 20. This causes that at a actuated by the drive motor 16 rotational movement of the output shaft 10 of the drive device 2 in the opening direction, the closing spring 23 is biased. When the energization of the drive motor 16 is terminated, the closing spring 23 then relaxes again and causes via the power transmission element 20 and the gear 18, a rotational movement of the output shaft 10 of the drive device 2 in the closing direction.

In principle, a determination of the output shaft 10 of the drive device 6 in at least partially open position of the connected blade only by the drive motor 16 is possible by the drive motor 16 remains permanently energized after reaching this position of the output shaft 10 and thus generates a force of the closing spring 23 compensating counterforce. As a result, however, a high power consumption and possibly also a disturbing noise emission would be incurred by the stationary power motor 16 stopped.

In order to avoid this disadvantage, a blocking device 24 is provided on the front side of the drive motor 16 which cooperates with the motor shaft 17 of the drive motor 16. The blocking device 24, which is shown in detail in the following figures, has a pivotable one-armed lever 26, which is connected in a coupling point 27 with a transmission element 28. The transmission element 28, shown only in sections here, which may be designed as a thrust member, for example as a push rod or Bowden cable, is, like the blocking device 24, a component of the device for controlling the closing sequence and extends to the inactive leaf 3, in particular to one with the inactive leaf 3 motion-coupled component of the drive device 7 of the passive leaf 3. In the illustrated position of the lever 26, the blocking device 24 in its the movement of the motor shaft 17 blocking state. Reaching the closed position of the inactive leaf 3 leads to a displacement of the transmission element 28 and thus to a pivoting of the lever 26, whereby the blocking device 24 releases the movement of the motor shaft 17 and the active leaf 2 can then be closed by relaxing the closing spring 23.

Fig. 3 shows a perspective view of the blocking device 24, wherein the drive motor 16, for the sake of clarity here, except the motor shaft 17, not shown. A connecting flange 25, which carries a housing 29 of the blocking device 24, serves to connect the blocking device 24 to the drive motor 16. The housing 29 has a bearing flange 30, in which the lever 26 is rotatably mounted. Further, the housing 29 laterally recesses 31, which allow access to a not visible in this view clamping screw 45 with a tool. The front side, the housing 29 is closed by means of a lid 32 which is screwed to the housing 29.

In the views of the following figures, individual components of the blocking device 24 are gradually omitted to show details of the blocking device 24, which are covered by these components.

In the illustration according to Fig. 4 the lid 29 is omitted. Visible now is the shaft end 33 of the motor shaft 17, which engages in the housing 29 of the blocking device 24. On the shaft end 33, a freewheel bearing 34 is arranged, on which a brake drum 35 is mounted. The freewheel bearing 34 causes a rotation of the brake drum 35 relative to the shaft end 33 in one direction possible, but locked in the other direction. The brake drum 35 is laterally encompassed by two sickle-shaped brake shoes 36, 37, which are mounted in the drawing below by means of bearings 38, 39 pivotally mounted in the housing of the blocking device 24. The bearings 38, 39 facing away from the end edges of the brake shoes 36, 37 are spaced above in the drawing, with an expansion bolt 40 engages in this distance, wherein the diameter of the expansion pin 40 is slightly smaller than the distance end edges of the brake shoes 36, 37th This will determined by the degree of wear of the not yet visible in this view brake pads 42, 43 of the brake shoes 36, 37, which abut both shown position of the expansion pin 40 to the brake drum 35. The expansion pin 40 is coupled to the lever 26 and arranged parallel to the axis of rotation of the lever 26. A second, on the other side of the axis of rotation the lever 26 mirror-symmetrically arranged expansion bolt 41 is not visible in this view.

In the illustration according to Fig. 5 now also the brake drum 35 is omitted with the freewheel bearing 34. Visible are now arranged on the inner arcs of the brake shoes 36, 37 brake pads 42, 43, which are formed of a suitable material, ie wear and with a high coefficient of friction.

In the illustration according to Fig. 6 is now additionally omitted, the housing 29, so that the components mounted in the housing 29 are now shown quasi "floating". Visible is now the clamping screw 45, whose shaft passes through a hole in the left brake shoe 36 in the drawing with play and the threaded shaft 49 engages in an internal thread of the right brake shoe 37 in the drawing. Between the screw head 46 of the clamping screw 45 and the left brake shoe 36, a tension spring 47 is supported, so that the two brake shoes 36, 37 are acted upon against each other and pressed with their brake pads 42, 43 against the brake drum 35. The clamping screw 45 has at both ends, ie both at its screw head 46 and on its threaded shaft 49, a molding for engagement of an adjusting tool, in this embodiment, a slot for engagement of a suitable screwdriver, so that the clamping screw 45 is actuated from both sides to adjust the bias of the tension spring 47. The view of this figure also shows that the lever 26 is rotatably connected in the region of its axis of rotation with a shaft 44 which is rotatably mounted in a complementary bush of the bearing flange 30 of the housing 29. In the shaft 44 covering the end of the lever 26, two openings can be seen, within which the upper ends of the two expansion bolts 40, 41 are visible.

In the illustration according to Fig. 7 will be in the Fig. 5 already shown components of the blocking device 24 shown from a different perspective. It can now be seen that a taper 48 of the shaft of the clamping screw 45 passes through the intermediate space formed between the two expansion bolts 40, 41, wherein the clear width between the two expansion bolts 40, 41 is greater than the diameter of the taper 48 of the shaft of the clamping screw 45th

In the illustration according to Fig. 8 are now the brake shoes 36, 37 omitted, so that here the otherwise covered by the brake shoes 36, 37 region of the clamping screw 45, in particular its orientation relative to the other components of the blocking device 24, is visible.

In the Fig. 9a to 9c is a schematic view of cooperating with the expansion bolts 40, 41 end edges of the brake shoes 36, 37 shown for three different operating conditions, whereby the operating principle of the blocking device 24 should be illustrated.

In the first operating state according to Fig. 9a are the brake pads 42, 43 of the brake shoes 36, 37, as in the previous Fig. 2 to 8 was shown, in its blocking position, that is adjacent to the brake drum 35. The two expansion bolts 40, 41 are located in the space between the end edges of the brake shoes 36, 37 without touching them. The freewheel bearing 34 of the brake drum 35 causes the motor shaft 17 can indeed rotate in the opening direction of the connected to the drive device 6 active leaf 2, a rotation in the closing direction, however, is locked.

By a closure of the inactive leaf 3 and the associated displacement of the transmission element 28, the lever 26 is pivoted, whereby also the shaft 26 connected to the lever 44 is pivoted accordingly, so that then the in Fig. 9b shown operating state is present. With the rotation of the shaft 44, here for example by 30 ° clockwise, as shown by the curved arrow, also the anchored in the shaft 44 expansion bolts 40, 41 have moved accordingly. The upper in the drawing spreader pin 41 is displaced to the right and has the right in the drawing brake shoe 37 correspondingly shifted to the right, as shown by the straight, right arrow. Similarly, the lower in the drawing 40 expansion pin is displaced to the left and has the left in the drawing brake shoe 36 correspondingly moved to the left, as with the straight, to the left arrow shown. Since the clamping screw 45 engages with its threaded shaft 49 unchanged in the right brake shoe 47, the tension spring 47 is compressed according to the increase in distance of the end edges of the brake shoes 36, 37. In this operating state, the brake pads 42, 43 of the brake shoes 36, 37 are no longer in contact with the brake drum 35, so that unimpeded rotation of the motor shaft 17 in both directions is possible.

This also applies to the in Fig. 9c shown operating state. Unlike the in Fig. 9b shown operating state is now the lever 26 with the shaft 44 in the other direction, ie pivoted counterclockwise, as shown by the curved arrow. The upper in the drawing spreader pin 41 is displaced to the left and has the left in the drawing brake shoe 36 correspondingly moved to the left, as shown by the straight, left arrow. Similarly, the lower in the drawing 40 expansion pin is displaced to the right and has the right in the drawing brake shoe 37 correspondingly moved to the right, as shown by the straight, right arrow. It is hereby made clear that a pivoting of the lever 26 in the one direction in the blocking device 24 has the same effect as a pivoting in the other, opposite direction. In practice, this means that the drive device 2 equipped with the blocking device 24 according to the invention offers a high degree of flexibility with regard to the connection and the direction of movement of the transmission element 28. <u> List of reference characters </ u> 1 Revolving door installation 28 transmission element 2 leaf 29 casing 3 Fixed leaf 30 Lagerflansch 4 fitting 31 recess 5 doorframe 32 cover 6 driving means 33 shaft end 7 driving means 34 Freewheeling bearing 8th casing 35 brake drum 9 casing 36 brake shoe 10 output shaft 37 brake shoe 11 output shaft 38 camp 12 sliding arm 39 camp 13 sliding arm 40 Expansion Bolts 14 slide 41 Expansion Bolts 15 slide 42 brake lining 16 drive motor 43 brake lining 17 motor shaft 44 wave 18 transmission 45 clamping screw 19 camp 46 screw head 20 Power transmission element 47 tension spring 21 spring plate 48 rejuvenation 22 cylinder 49 threaded shaft 23 closer spring 24 blocking device 25 flange 26 lever 27 coupling point

Claims (8)

Device for controlling the closing sequence of a two-leaf revolving door system (1), which has an overrunning moving leaf (2) and a deflecting stationary leaf (3) which are in each case operatively connected to an output shaft (10, 11) of a drive device (6, 7),
with a blocking device (24), by means of which the active leaf (2) can be blocked or released, depending on the position of the inactive leaf (3), by having a coupling point (26) for a mechanical transmission element (28),
wherein the blocking device (24) acts on a movable component of the drive device (6) of the active leaf (2) by having a brake drum (35) coupled to the movable component via a freewheel bearing (34),
characterized,
in that the blocking device (24) has two brake shoes (36, 37) which are acted upon by at least one tension spring (47) which is supported between the two brake shoes (36, 37) against each other on the brake drum (35). Device according to claim 1,
characterized in that the tension spring (47) is designed as a helical compression spring. Apparatus according to claim 1 or 2,
characterized in that the tension spring (47) at one end to the one brake shoe (36) and at the other end to a in an internal thread the other brake shoe (37) screwed clamping screw (45) is supported. Device according to claim 3,
characterized in that the bias of the tension spring (47) by turning the clamping screw (45) is adjustable. Device according to one of the preceding claims,
characterized in that between the front ends of the brake shoes (36, 37) at least one with the mechanical transmission element (28) operatively connected expansion pin (40, 41) is arranged. Device according to claim 5,
characterized in that the expansion pin (40, 41) on a shaft (44) is arranged parallel to the axis of rotation. Device according to claims 3 and 5,
characterized in that two expansion bolts (40, 41) are provided, wherein the expansion bolts (40, 41) are arranged parallel to and spaced from each other and the shaft of the clamping screw (45) between the expansion bolts (40, 41) engages. Device according to claim 7,
characterized in that the shank of the clamping screw (45) has a taper (48) at least in the region which passes between the expanding pins (40, 41).

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