EP2843160B1 - Striker plate of a frame or a frame of a door - Google Patents

Description

The invention relates to a strike plate of a frame or a frame of a door, in particular a security door, with at least one opening for insertion of a latch and / or a bolt of a wing of the door, wherein the wing in the frame or the frame about at least one axis of rotation, preferably a vertical axis of rotation, is rotatably mounted and wherein the at least one breakthrough at an edge on which a support surface of the latch or the bolt is supported at a force acting on the wing opening force, at least one roller body which in a locking position of the trap and / or the latch comes into contact with the latch and / or the latch and is rotatably mounted about an axis parallel to the edge.

For the purposes of the present application, the frame is that part of the door which is fixedly mounted in a building opening delimiting a door opening. The wing is rotatably supported by means of bands in the frame or the frame and can be transferred from a closed position to an open position. On the frame is the strike plate, which is typically designed in the form of a flat or angular steel sheet with at least one recess or recess for a trap and / or a bolt. The strike plate can be provided in addition to the installation in a frame in a control wing of a multi-leaf door.

Typically, the latch is located in the wing of the door, with the side of the latch facing away from the hinge side of the door having a beveled ramped side. As the door closes, the latch snaps into the strike plate and protrudes into a clear space behind it, keeping the wing in a closed state. In this case, the holding surface of the trap is located at the edge of the opening, on which the roller body is arranged.

In addition to the case, the bolt may still be in the wing of the door, wherein the bolt extends by a rotation with a key and additionally locks the wing in its closed state. For this purpose, the bolt penetrates the strike plate in a second opening before it enters a further space in the frame of the door. The bolt may be configured plate-shaped or bolt-shaped. Further embodiments of the bolt are conceivable.

According to the present application, the door may be equipped with a so-called latch lock, bolt lock or a latch bolt lock.

State of the art

In the course of the lifetime of a door these different weather conditions and environmental influences are exposed. These cause possible settling or lowering movements of the door leaf and thus the trap. The settling and lowering movements can lead to a difficult closing and / or opening of the door due to increased friction between the trap and the striking plate.

An Indian US 4,892,341 described strike plate is self-adjusting and thus adapts to the setting and lowering movements of the door leaf and the trap disposed therein. For this purpose, the strike plate has on one side a flexible wall in the form of a spring-mounted roller body, which can dodge at a force exerted by the trap counter-pressure by a certain horizontal distance. The trap slides over the roller body and then enters through the opening in the strike plate in the free space. In the strike plate, a pocket is present, in which the roller body can enter at lateral deflection. The axis of the roller body is mounted in fixedly arranged on the back of the striker bearings, so that the lateral deflection of the roller body can be achieved solely by the elastic deformation of the axle. This is intended to ensure that the door is always closable, even when setting movements occur.

A disadvantage of this design is that the roller body undergoes a frictional resistance in the elastic deformation of the axle. As a result, the reel body can not rotate properly about a vertical axis. Another disadvantage is that the spring-mounted roller body does not withstand external manipulation of the door, whereby the door is easy to break open.

Due to the high safety regulations, this type of strike plate is not suitable for security doors in, for example, prisons. Security doors are exposed to extreme conditions. This includes, for example, a detained person shaking vigorously at the door or bumping against it. In addition, for example, this person attempts to prevent the jailer from entering the cell by means of a wedge between the sash and the sash. The wedge acts on the door leaf, forcing the latch against the strike plate. A door with that in the US 4,892,341 lock plate described would not withstand these loads.

Furthermore, under the influence of heat effects, such as may occur in a fire, the frame and especially the wing of the door forgiven. This also leads to a large pressure from the trap on the strike plate, which makes it difficult to open the door or even prevented.

task

For this reason, it is an object of the present invention to develop a strike plate, which allows easy opening of the door under the above-mentioned extreme conditions. In addition, the doors provided with the striking plates should comply with the safety regulations for security doors.

solution

This object is achieved in that the at least one roller body is mounted immovably in a direction perpendicular to the axis.

For the purposes of the present application means immovable that the roller body does not move perpendicular to the axis under normal operating conditions. Also, the roller body must not move in a strong shaking the door or a violent pushing against the door perpendicular to the axis.

The fact that the edge of the aperture has a roller body which is non-displaceably mounted in a direction perpendicular to the axis has the following advantage: in the case where, for example, an imprisoned person manipulates the wing with suitable means such that the retaining surface of the latch is pressed to the edge of the strike plate, just is not - as before - overcome an extremely high frictional force to retract the trap; Rather, the extremely high friction force occurring in conventional doors is replaced by a significantly lower rolling friction, whereby the trap can be easily withdrawn and the door can thus be opened. The rolling friction is caused by a rotation of the roller body, so that the case can roll on it. The reel body rotates about the axis which is parallel to the edge of the aperture and to the longitudinal direction of the striker plate.

In order to meet the high security requirements for security doors, the strike plate, as this example, in the US 4,892,341 the case is, do not be yielding. The door according to the invention is suitable for a security area and must accordingly withstand manipulation of detained persons. This is made possible by the fact that the roller body in a direction perpendicular to the axis and perpendicular and is mounted immovably parallel to the longitudinal direction of the located in the closed position of the door wing.

The above also applies to the case that a roller body is arranged at the edge of the opening for a bolt.

At a high contact pressure of the case on the strike plate or the at least one roller body, it is advantageous if the at least one roller body is rotatably mounted on an axle body defining the axle, wherein the axle body is rigid. Thus, it is impossible that the axle body is deformed or bent, whereby a largely frictionless rotation of the roller body is ensured. If the axle body were deformable, the roller body could tilt, for example, with the axle body itself or adjacent roller bodies and the rolling movement could be restricted. Also, then the bearing surface of the roller body would be reduced to the case or only selectively available, so that rolling would be limited again.

The invention further ausgestaltend is provided that the axle body has a cylindrical pin with a diameter between 4 mm and 10 mm, preferably between 6 mm and 8 mm. The outer diameter of the axle body corresponds approximately to the inner diameter of the at least one roller body which is mounted on the axle body. The length of the cylindrical pin is preferably between 40 mm and 80 mm, more preferably between 50 mm and 70 mm. The length of the cylindrical pin is dependent on the length of the breakthrough in the strike plate, in which the cylinder pin is inserted together with the at least one reel body.

In order to reduce wear on the individual reel body and to enable the use of standard reel bodies, it is provided according to a particularly advantageous embodiment of the invention that viewed in the direction of the axis, a plurality of roller bodies is arranged one behind the other, preferably a width of a joint between two adjacent reel bodies is less than 1 mm, preferably less than 0.5 mm. The joints between the individual roller bodies are kept as small as possible, so that a contact surface between the roller bodies and the case and / or the roller body and the bolt in the locking position is as large as possible. A large contact area allows a good distribution of the opening forces which can act on the door leaf and accordingly on the latch or latch. As a result, the rolling friction is reduced to the individual reel body and facilitates the retraction of the trap and / or the bolt.

After attaching the at least one roller body on the axle body, it is particularly advantageous if the axle body is mounted at least one end in a bearing bore having a fastener whose outer diameter or width dimension preferably corresponds to the outer diameter of the at least one roller body. If the outer diameter of the fastening elements is greater than that of the roller body, it may happen that the latch and / or the latch rests on the fastening elements instead of on the roller bodies, which would result in a difficult opening of the door.

The axle is housed at least one end by means of a press fit in the bearing bore of the respective fasteners. Subsequently, the axle body is inserted with the at least one roller body and the fastening elements in the strike plate. A block-shaped configuration of the fastening elements allows a simple attachment of the axle body with the at least one roller body and the fastening elements in the strike plate. The fasteners are welded to the strike plate and are thus firmly anchored in the strike plate. Nonetheless, the reel bodies are rotatably mounted on the axle body.

Alternatively, it is provided that the roller body has at least one end of a fastening portion, preferably in the form of a stub axle whose diameter is smaller than a diameter of the roller body in a central region. The attachment portion is inserted into the bearing bore of the fastener. However, the connection between the attachment portion does not occur by means of a press fit, since the reel body is rotatably supported in the attachment members. In this alternative, the roller body and the axle body are a unit that rotates as a whole in the fasteners.

Advantageously, the at least one roller body is a needle bearing, which rolls with its rolling elements formed as needles on an outer circumferential surface of the axle body. Needle roller bearings are rolling bearings, wherein the rolling elements in the needle roller bearing visually come close to the shape of a needle. The rolling elements are thin and very long cylindrical rollers. Needle roller bearings have a very low installation height and are accordingly space-saving, without having to dispense with a high load capacity. Furthermore, a lubricant-free operation is possible by means of needle roller bearings. In contrast to ball bearings, needle roller bearings offer a larger bearing surface.

In order to keep the friction surface as small as possible, it is further provided that the holding surface of the trap and / or the bolt for discharging a force acting on the wing Opening force is supported exclusively on the at least one roller body. That is, when the door is opened, the latch and / or latch slide over only the at least one roller body. Consequently, in the locked position of the door, the opening forces acting on the latch are received by the at least one reel body. A frictional resistance, which may occur for example by a contact surface between the trap and the fasteners or the strike plate is thereby avoided.

Advantageously, the at least one roller body has an outer diameter between 7 mm and 15 mm, preferably between 8 mm and 12 mm, wherein preferably a distance between the axis and a plane defined by a viewing surface of the striking plate between 0 mm and 4 mm. The viewing surface is in the context of the present application, the surface of the strike plate, which faces the wing with the door closed and is visible only when the wing is open. Depending on the design of the frame and the striking plate, the roller body can be flush with the edge of the strike plate or over the edge of the strike plate survive.

Finally, it is provided that a defined bearing distance exceeds a height of the aperture measured parallel to the axis of the at least one roller body by at most 20%. The defined bearing distance is defined as the clear distance between two opposite fastening elements, which are firmly connected to the strike plate. It is preferably provided that the storage distance does not exceed the breakthrough by more than 10%, more preferably not at all, and even more preferably falls below it. By means of a small bearing distance of the axle body is kept as short as possible. A short axle body allows a possible rigid training of the axle body and thus the immobility of at least one roller body.

embodiment

The invention described above will be explained in more detail using an exemplary embodiment which is illustrated in the figures.

Fig. 1:

Ansicht einer Tür in Schließstellung mit einem erfindungsgemäßen Schließblech,

Fig. 2:

Horizontalschnitt durch die Tür gemäß Figur 1,

Fig. 2a:

Vergrößerte Darstellung eines Horizontalschnitts durch einen Rollenkörper gemäß Figur 2,

Fig. 3:

Ansicht des Schließbleches gemäß Figur 1,

Fig. 4:

Vertikalschnitt des erfindungsgemäßen Schließbleches gemäß Figur 1,

Fig. 5:

Ansicht eines alternativen Schließblechs,

Fig. 6:

Ansicht eines weiteren alternativen Schließblechs,

Fig. 7:

Vertikalschnitt des Schließblechs gemäß Figur 6,

Fig. 8:

Ansicht eines vierten alternativen Schließblechs und

Fig. 9:

Vertikalschnitt des Schließblechs gemäß Figur 8.

It shows:

Fig. 1:

View of a door in the closed position with a strike plate according to the invention,

Fig. 2:

Horizontal section through the door according to FIG. 1 .

Fig. 2a:

Enlarged view of a horizontal section through a roller body according to FIG. 2 .

3:

View of the strike plate according to FIG. 1 .

4:

Vertical section of the striking plate according to the invention FIG. 1 .

Fig. 5:

View of an alternative strike plate,

Fig. 6:

View of another alternative strike plate,

Fig. 7:

Vertical section of the striking plate according to FIG. 6 .

Fig. 8:

View of a fourth alternative strike plate and

Fig. 9:

Vertical section of the striking plate according to FIG. 8 ,

The FIG. 1 shows a view of the hinge side 1 of a door 2 in its closed position. 3 A wing 4 of the door 2 is rotatably supported by means of two bands 5 in a frame 6 , wherein a rotation axis 7 of the door 2 extends vertically. In the wing 4 a lock with a latch 8 and a latch 9 is arranged. While the door 2 is transferred from the open position to the closed position 3 , the trap 8 penetrates a first upper opening 10 in a strike plate 11 according to FIG FIG. 3 , wherein the case 8 is formed in the present case so short that it does not enter a free space 12 in the frame 6 . In addition, the latch 9 can be inserted by means of a key through a second opening 13 in the strike plate 11 in a free space 14 . The free spaces 12 and 14 are formed as a continuous space and could alternatively be formed as separate spaces. The latch 8 and the latch 9 are now in a locking position 15th

Both the latch 9 and the latch 8 can be pushed back by means of the key in order to convert the door 2 back into its open position. In addition to the key, the latch 8 can also be opened with a door handle 16 .

Like in the FIG. 2 shown, the case 8 has a side facing away from the hinge side 1 keilbeziehungsweise ramp-shaped tapered side 17 . A flat support surface 18 of the case 8 is located in the locking position 15 at an edge 19 of the first opening 10 in the strike plate 11 , said edge 19 of the located in the frame 6 closing plate 11 consists of five roller bodies 20 , which is closer in the FIG. 3 can be seen. These roller bodies 20 are rotatably mounted about their own axis 21 , so that upon retraction of the latch 8 by operation of the door handle 16, the latch 8 rolls with its holding surface 18 on the roller bodies 20 . This is particularly advantageous when the case 8 is pressed by external influences against the edge 19 of the aperture 10 and thus against the roller body 20th

In the FIG. 2a is a horizontal section through the roller body 20 according to FIG. 2 shown in an enlarged view. The reel body 20 are in directions which through an arrow S and an arrow P indicate are stored immovably. The arrow S describes a direction which is perpendicular to the longitudinal direction of the located in the closed position 3 wing 4 of the door 2 and perpendicular to the axis 21 . The arrow P describes a direction of the roller body 20 parallel to the longitudinal direction of the located in the closed position 3 wing 4 of the door 2 and perpendicular to the axis 21st

In the FIG. 3 it can be seen that the roller body 20, which are formed as needle bearings, are pushed onto an axle body 22 in the form of a cylindrical pin. The inner diameter of the roller body 20 corresponds in the present example, the outer diameter of a cylindrical pin of 6 mm. The axle body 22 is rigid and thus prevents movement of the roller body 20 in a horizontal direction to an axis 23 which is parallel to the edge 19 of the aperture 10 and extending in the longitudinal direction of the striking plate 11 . The axis 23 thus coincides with the axis 21 of the roller body 20 . The roller body 20 are on the side facing away from the opening 10 side 24 out by 2 mm on the strike plate 11 .

Between the successively arranged roller bodies 20 are joints 25 , which are each smaller than 0.5 mm wide.

For the positioning of the axle body 22 with the thereon roller bodies 20 in the lock plate 11 are located at two respective ends 26, 27 of the axle 22 block-shaped fastening elements 28, 29. The fasteners 28, 29 have the same outer diameter of 10 mm as the roller body 20. In the fasteners 28, 29 are each a non-continuous bearing bore.

The measures provided for the fixing of the axle 22 fastening elements 28, 29 are each in a rectangular recess 30, 31 each acting as a pocket for receiving the fastening elements 28, 29, wherein viewed in the longitudinal direction of the opening 10 at an upper end 32 and lower Adjacent end 33 of the breakthrough. The fastening elements 28, 29 are welded to the strike plate 11 .

In the FIG. 3 shown side of the strike plate 11 , the viewing surface 34. The viewing surface 34 is in an installed state of the strike plate 11 only visible when the door 2 is in the open position. For fastening the striking plate 11 in the frame 6 , three screws are guided through three holes provided for this purpose 35 and screwed into the frame 6 .

In FIG. 4 is a vertical section of the strike plate 11 from FIG. 3 shown. The vertical section shows that the axis 23 of the axle body 22 extends at a distance of 4 mm from the viewing surface 34 . The roller body 20 protrude on the axle body 22 both on the visible surface 34 and on the surface 34 facing away from the view surface 36 by 1 mm via the lock plate 11 out.

In the FIG. 5 a second striking plate 111 according to the invention is shown, extending from the striking plate 11 in accordance with FIG. 3 differs in that the roller body 20 on its side facing away from the opening 10 side 24 out not, but complete flush with the strike plate 111 . This strike plate 111 can be used as an exchange strike plate when an engagement of the case 8 or the bolt 9 is to be moved to the hinge side 1 out.

The FIGS. 6 and 7 show a further inventive locking plate 211 , in contrast to the strike plate 1 according to FIG. 3 4 has both at the edge 19 of the opening 10 for the case 8 and at the edge 37 of the opening 13 for the latch 9 roller body 20 .

Finally, in the FIGS. 8 and 9 a striking plate 311 is shown, which is provided only for a door 2 with a latch 9 and thus has only one opening 13 for the latch 9 . Analogous to the striking plates 11, 111, 211 described above, the edge 37 of the opening 13 in the striking plate 311, the roller body 20 .

LIST OF REFERENCE NUMBERS

1

hinge side

2

door

3

closed position

4

wing

5

bands

6

frame

7

axis of rotation

8th

Cases

9

bars

10

breakthrough

11, 111, 211, 311

striking plate

12

free space

13

breakthrough

14

free space

15

locking position

16

door handles

17

Beveled side

18

holding surface

19

edge

20

roller body

21

axis

22

axle body

23

axis

24

page

25

Gap

26

The End

27

The End

28

fastener

29

fastener

30

recess

31

recess

32

Top end

33

Lower end

34

view space

35

drilling

36

area

37

edge

S

arrow

P

arrow

Claims (8)

1. A striker plate (11, 111, 211, 311) for a door surround (6) or door frame (2), in particular of a security door, with at least one opening (10, 13) for purposes of introducing a latch (8) and/or a lock (9) of a leaf (4) of the door (2), wherein the leaf (4) is mounted in the door surround (6) or the frame such that it can rotate about at least one axis of rotation (7), preferably a vertical axis of rotation (7), and wherein the at least one opening (10, 13) has at least two rollers (20) at an edge (19, 37) on which a retaining surface (18) of the latch (8) or lock (9), in the mounted state of the leaf (4), can be supported in the event of an opening force acting on the leaf (4), which rollers, in a locking position (15) of the latch (8) and/or lock (9), come into contact with the latch (8) and/or lock (9), and are mounted such that they can rotate about an axis (23) running parallel to the edge (19, 37), wherein the at least two rollers (20) are mounted such that they cannot be displaced in a direction at right angles to the axis (23), characterised in that each of the at least two rollers (20) is a needle bearing, which in each case rolls with its rolling elements formed as needles on an outer shell surface of the axial body (22).
2. The striker plate (11, 111, 211, 311) in accordance with claim 1, characterised in that the at least two rollers (20) are mounted such that they can rotate on an axial body (22) defining the axis (23), wherein the axial body (22) is of a rigid design.
3. The striker plate (11, 111, 211, 311) in accordance with claim 2, characterised in that the axial body (22) is a cylindrical pin with a diameter of between 4 mm and 10 mm, preferably of between 6 mm and 8 mm, wherein the length of the cylindrical pin is preferably of between 40 mm and 80 mm, more preferably of between 50 mm and 70 mm.
4. The striker plate (11, 111, 211, 311) in accordance with one of the claims 1 to 3, characterised in that as viewed in the direction of the axis (23), a number of rollers (20) are arranged one behind another, whereby a width of a gap (25) between two adjacent rollers (20) is preferably less than 1 mm, preferably less than 0.5 mm.
5. The striker plate (11, 111, 211, 311) in accordance with one of the claims 2 to 4, if claim 4 is at least dependent upon claim 2, characterised in that at at least one end (26, 27) the axial body (22) is mounted in a mounting element (28, 29) having a bearing bore, the outer diameter, or width dimension, of which preferably corresponds to the outer diameter of the at least two rollers (20).
6. The striker plate (11, 111, 211, 311) in accordance with one of the claims 1 to 5, characterised in that in the mounted state of the leaf (4) the retaining surface (18) of the latch (8) or lock (9) can be supported exclusively on the at least two rollers (20) for purposes of diverting an opening force acting on the leaf (4).
7. The striker plate (11, 111, 211, 311) in accordance with one of the claims 1 to 6, characterised in that the at least two rollers (20) possess an outer diameter of between 7 mm and 15 mm, preferably of between 8 mm and 12 mm, wherein a distance between the axis (23) and a plane defined by a face (34) of the striker plate (11, 111, 211, 311) is preferably between 0 mm and 4 mm.
8. The striker plate (11, 111, 211, 311) in accordance with one of the claims 1 to 7, characterised in that a bearing distance defined as a clearance between two opposing mounting elements (28, 29), which are securely connected with the striker plate (11, 111, 211, 311) exceeds a height of the opening (10, 13) measured parallel to the axis (23) of the at least two rollers (20) by a maximum of 20%, preferably by a maximum of 10%, more preferably does not exceed the height at all, and even more preferably is less than the latter.

Images