GR1009110B - Rotary security door's mechanism - Google Patents

Abstract

Novelty: a mechanism assisting the movement of rotary security doors is disclosed. Operational mode: an endless screw 12 which, being set on two aluminium bearings 1, coveys the motion to a specific nut 21 having external dents 22, which nut 21 urges the screw 18 to move up and down via the keyway 19 wherein a dent 24 of the accessory 23 enters, which dent is fixed at the lower part of the bearing 1 and impedes the rotation of the screw 18. An axle 30 is steadily fixed in the interior of the screw 18 and follows the vertical movement of this last. The security door moves around the axle 30 which steadily remains in a non-rotation position. Two similar mechanisms are placed in the internal framework of the armored security door in the proper position (one at the top of the door and the other at the bottom thereof). An endless screw 12 bears the head 13 having the hexagonal housing 14 serving for the rotation of the screw 12 by means of a hexagonal key so that the axles 30 are analogously extended to enter the fixing rotation nests 42 (see, figures 1 and 7).

Description

1. DESCRIPTION

SECURITY REVOLVING DOOR MECHANISM

The invention refers to the construction of a security revolving door mechanism. To date, the technology of manufacturing revolving door mechanisms has not demonstrated any such construction.

It is limited to the construction of mechanisms consisting of a base, a system of levers, and tightening a screw moves the levers and raises or lowers a shaft accordingly. This type of construction presents significant problems such as:

1) Very limited handling space e.g. 5 mm as the distance between the box and the door leaf.

2)  Too little shaft travel in the support and pivot housing.

3) Limited possibilities and space for supporting the mechanism in the frame and door leaf.

4)  Inability to operate due to small statics on doors of large size and weight.

The invention as described below aims and achieves the solution of these main disadvantages in a new way which constitutes a new technical rule in the technology of security revolving (pivot) door manufacturing.

The advantages provided by this invention are mostly as follows:

1) Possibility of manufacturing heavy-duty revolving door mechanisms, e.g. eight hundred kilos.

2)  No limitation of shaft entry length in pivot and support nest e.g. axle input: sixty millimeters.

3)  During the rotation of the door, the axis remains fixed, while the door rotates around the fixed axis and in this way no tolerances are created over time between the axis and the nest, rotation and support. And the load of the door is carried by a heavy-duty conical bearing.

4) The entry of the shafts of the mechanism into the rotation and support nests is easily achieved by using an electric wrench with a hexagonal shaft at the end, or manually with a commercial C-shaped hexagon.

5) Longevity of smooth and quiet operation (e.g. fifty years).

6)    The user is freed from the necessity of repairs or replacement of parts of the mechanism with the corresponding financial benefit.

7) Quiet operation without vibration.

A way of applying the invention is described in the following with references to drawings that illustrate indicatively, descriptively, but also with technological clarity a way of basic implementation of a revolving door mechanism, where:

Figure 1 shows a perspective view of two security revolving door mechanisms, one upper and one lower, resting on the inner frame of the door. He also shows two hex keys on a power drill where when turned they raise or lower the shafts at will.

Figure 2 shows a view of the bearing of the mechanism which is made of aluminum profile.

Figure 3 shows in view and section the machining that is done on the bearing of the mechanism, i.e. on the aluminum profile where two circular planes of different diameters are made.

Figure 4 shows a plan view of the bearing as well as a form hole into which a worm screw goes.

Figure 5 shows three main components of the mechanism in perspective and in section. A special nut with external serrations, a screw which carries a wedge along it and a fitting which is screwed into the bottom of the screw.

Figure 6 shows a perspective view of the rotary mechanism shaft and two jaws bolted onto a threaded portion carried by the mechanism shaft.

Figure 7 shows a perspective view of the rotating mechanism with its components and how they are assembled.

The figures show a security revolving door mechanism consisting of a bearing (1) made of a hard alloy aluminum profile which is cut to desired dimensions and one of its sides is machined so as to create a circular slot (6) as well as a circular slot (7). around the central hole (2) of the bearing (1) as shown in figure 3. Also two perforations (4) about twenty millimeters deep are made in which screws (26) are screwed, which come from the holes (25) of the component (23) ) and support the component (23) on the bearing (1). Also, the bearing (1) has side holes (3) for the entry of the axles (8), as well as holes (5) for the entry of the screws (9). The component (23) has a projection (24) (tooth, formation from the same material), which goes into a wedge (19) carried by the screw (18) and forces it to move vertically up and down without being able to rotate. A special nut (21) is screwed into the screw (18) which has an external toothing (22) which meshes with the spirals of the endless screw (12) which is located in a hole (11) in the form of the bearing (1) as shown in figure 4 .During the rotation of the worm screw (12) the screw (18) moves up and down without being able to rotate and moves simultaneously with the shaft (30) which has in its upper part a threaded hole (32) in which a screw (34) is screwed after first passing through the hole of the washer (33) as shown in figure 7. In the lower part of the screw (18) and on the thread (20) that has its inner diameter, a component (27) that has a protrusion is screwed with a thread (28) as shown in half-section in figure 5. Under the component (27) is placed a tapered bearing (29) and under the bearing (29) are supported two jaws (35 and 36) which have a thread in their inner diameter (44). The jaws (35 and 36) are supported on each other and on the thread (31) of the shaft (30) by the screws (38) which come from the holes (37) of the jaw (36) and are screwed into the threaded holes (45) ) carried by the jaw (35) as shown in figure 6. The jaws when joined have the ability to be screwed onto the thread (31) of the shaft (30) and a stop position can be selected up and down at will. The shaft (30) in its lower part goes between two bearings (41) which are located in sockets (40) that carry the bearing (39) which is essentially manufactured with the same profile as the bearing (1) as shown in figure 7. The movement of the shaft (30) up and down is achieved by the rotation of the endless screw (12) which rests on the bearing (1) and is supported by the fuse (17) which rests on the notch (15) carried by the endless screw (12) at one end after first passing the washer (16) through the shaft as shown in figures 4 and 7. The screw (12) has a head (13) with a hexagonal socket (14) into which a corresponding hexagonal rod is inserted which can be moved with an electric drill or with a similar commercial hex key. The shaft (30) of the rotating mechanism in its lower part goes into a nest (42) which has a hole (43). The nest (42) is sunken and attached to the floor. During the rotation of the door, the axis remains fixed, while the door rotates around the fixed axis and in this way no tolerances are created over time between the axis and the nest, rotation and support. And the load of the door is carried by a heavy-duty tapered bearing (29 and 41). Two rotating mechanisms are supported on the internal frame of the door, one at the top and one at the bottom, which for alignment purposes are connected to the shaft (8) in desired proportional dimensions and rest on the metal profile (46) which is glued to the sheet metal (47) of the chest of the security door and the mechanisms are supported on the metal profile (46) with the screws (9) which come out of holes (48) which holds the metal profile (46) in a similar position and are screwed into nuts ( 10) as shown in figures 1 and 2. In this way the mechanisms are integrated very strongly with the frame of the armored door and can withstand very high loads without the door sagging. These mechanisms can be supported on any type of security door, i.e. armored door.

The above basic components are assembled as shown in the attached drawings during their basic construction and operation and can be made in any desired shape, size or shape and type of material. Possibilities of detailed modifications are not considered in the present description and drawings. For every construction need, it is possible to modify either the forms of the profiles and the components, or their operating mechanisms, without altering the basic principle of the invention where the security door rotates around an axis without it rotating when the door rotates keeping the tolerances between the shaft and the nest constant, providing maximum durability and smooth operation of the door without any rattles and the need for lubrication or maintenance of parts.

For the mass production of the above mechanism parts, a mold is required to produce the bearing profile (1 and 39). The remaining parts of the mechanism can be mass-produced on automatic lathes equipped with machine shops. The metal profile (46) is formed into a slat as shown in figure 1. The perforations of the metal profile (46) are made either with a drill or with a perforating press mold.

NOMENCLATURE OF MECHANISM COMPONENTS

1. Mechanism bearing.

2. Center hole of (1).

3. Lateral holes of (1).

4. Holes of (1).

5. Bearing holes (1) for bolts (9).

6. Circular socket of (1) for fitting (23).

7. Receptacle of the bearing (1) for the special nut (22).

8. Bearing connecting shaft (1).

9. Trade screw.

10. Screw nut (9).

11. Form hole in the bearing (1) for the entry of the worm screw (12). 12. Worm.

13.  Auger head (12).

14.  Hex socket of (13).

15. Notch worm screw (12) for safety support (17).

16. Washer.

17.  Auger support safety (12).

18. Screw.

19. Wedge (slot) of screw (18).

20. Internal thread of the screw (18) at its lower end.

21.  Special nut with external toothing (22).

22.  External toothing of the nut (21).

23. Fitting with internal tooth (24).

24.  Tooth of (23).

25. Milled holes of (23).

26. Component mounting bolt (23).

27. Washer with central protruding thread (28).

28. Thread of (27).

29. Tapered bearing of trade.

30. Central axis.

31. Local thread of (30).

32. Threaded hole of (30).

33.  Washer with central milled hole.

34. Tapered head screw.

35. Jaw with two threaded holes (45).

36. Jaw with two holes (37).

37. Jaw holes (36).

38. Jaw clamping screw (35 and 36)

39. Bearing bush (41).

40. Receptacle (39) for seating the bearing (41)

41.  Trade bearings.

42. Shaft housing (30).

43. Nest hole (42).

44.  Internal thread of jaws (35 and 36).

45. Jaw threaded holes (35).

46. Metal profile.

47. Armored door sheet metal.

48. Holes of (46).

Claims (1)

3. CLAIMS 1. A security revolving door mechanism characterized in that it consists of a bearing (1) having a predetermined central hole (2), side holes (3 and 4) as well as circular recesses (6 and 7) as well as a formed horizontal hole (11) on which a worm screw (12) with a head (13) and a hexagonal socket (14) goes, rests and rotates. The spirals of the endless screw (12) engage with the toothing (22) of a special nut (21) which is screwed into the screw (18) which carries a longitudinal wedge (19) into which a protruding part (tooth) ( 24) which carries a component (23) and rests on the bearing (1) with screws (26). During the rotation of the endless screw (12) and the special nut (21), the screw (18) moves up and down without rotating simultaneously with a shaft (30) which is supported in the center of the screw (18). The screw (18) has a thread (20) at one end into which a washer (27) with a central protruding thread (28) is screwed. Under the washer (27) and around the shaft (30), there is a taper bearing (29) and below it two jaws (35 and 36) carrying an internal thread (44), screwed into a thread (31) carried by the shaft (30) and are supported by bolts (38), which come from holes (37) in the jaw (36) and are screwed into a thread (45) carried by the jaw (35). Under the two jaws there is a bearing (39) with sockets (40) in which bearings (41) are located, in which the shaft (30) goes. Bearings (1) and (39) are supported by shafts (8). Two identical revolving security door mechanisms are supported on the inner frame of the door in a corresponding position at the top and bottom where during the rotation of the door, the shafts remain fixed in the sockets (42) while the door rotates about them.