DE19541063C2 - Door locking device - Google Patents

Description

The present invention relates to a door locking device for attachment in a door frame or door leaf.

Such a door closing device is an example as known from CH-PS 345 266. This known door locking device has a housing on, which sunk in a door frame or in a door leaf is installed. A coil spring acts in the closing direction via a locking rod drive with a universal joint arrangement on a connection device which the opposite door leaf or door frame is fixed. The screw that is arranged around a hydraulically acting piston-cylinder arrangement net, by means of a throttle device against the closing direction as a damper tion device acts, the characteristics of which can be set in a relatively complex manner.

These known door closers are usually hidden in the door frame builds because the door leaves are often too narrow or not stable enough. Farther are these known door closers preferred for blunt door-door frame Connections used because the rebate width of folded door frames or Door leaves often prevent successful installation.

A concealed door closer is known from CH-PS 192 530, in which the spring device and the damping device are separate from one another other and in the axial direction of the spring device are provided one behind the other. This arrangement takes up a lot of space for installation in the door leaf.

In the known generic door closers, it is not possible to open the door to lock in an open position without additional aids. Still is No opening damping is provided for these door closers.

It is an object of the present invention to use one as universally as possible stable and compact door closers.

This object is achieved by a door locking device with the in claim 1 specified features solved. Preferred embodiments are counter stood the subclaims.

The invention is based on the consideration that spring for such door closers devices with a certain spring force must be used. By the non-concentric arrangement of the spring device and the piston-cylinder Arrangement can have a coil spring smaller inside without restrictions be selected so that the closing force remains the same on the outside diameter of the coil spring than the width of the door lock significantly determining factor decreases. This allows the entire width of the Door locking device can be significantly reduced. At the same time, the provide flexible design according to the invention of the individual gear elements bare coupling of the spring device, the piston-cylinder arrangement and the Connection device created. The first gear element is a spring swing arm, the second gear element as a damper swing arm and the third Gear designed as a control cam and has the third gear element at least one control curve for the spring arm and for the damper arm on. The control cam has a first control curve on which the spring rocker runs and a second control curve on which the damper rocker runs on. As a result, a precisely predeterminable control of the public transport can be made in a simple manner be specified and the shooting movement of the door.

The first control curve for the control of the spring rocker has a steep one  control cams assigned to the initial area of the door opening movement section, so increased opening damping in the Starting area of the door opening achieved and at the same time the final stroke to Closing the door are supported.

The first control curve for the control of the spring rocker has one End region of the control curve section assigned to the door opening movement, which is designed as a rest area, it is possible in this way that the door in the door opening position without the need for additional aids can be snapped into place.

In a preferred embodiment, the spring rocker and the damper swing on the housing, preferably around a common axis of rotation, un hinged depending on each other.

In the door locking device according to the invention, the dimensions are not the piston-cylinder arrangement for the design of the spring device determining factor, as is usually the case when the screw which is arranged around the piston rod. It is therefore within the scope of Invention possible, for example, the spring device and the piston-cylinder To be arranged one above the other in the direction of installation. This would make the Door locking device relatively high. It is therefore preferable to use the spring device and to arrange the piston-cylinder arrangement one behind the other. This takes the installation depth is a little too, which remains visible from the outside however reasonably compact.

It is particularly preferable to have the piston-cylinder arrangement in the installation direction to be arranged behind the spring device. This results in ideal levers conditions so that, for example, a screw connection between the door lock directional housing and door frame are not excessively large got to.  

The piston-cylinder arrangement preferably has a piston rod, the opposite end of the piston with a piston rod head the damper rocker can be brought into engagement, for which purpose the piston against the Damping arm is provided in the piston spring holding system, and wherein the Spring device has a spring support rod which has a spring support rod head can be brought into engagement with the spring rocker.

According to a preferred embodiment, a helical compression spring is on the Spring support rod arranged and is supported with one end on one Spring contact surface of a spring guide head mounted on the housing and with their other end on the spring support rod head. This measure will achieved that when opening the door of the driver against the helical compression spring compresses the spring guide head on the housing, making the necessary Closing force builds up.

Preferably, the circumference of the coil spring is approximately equal to the width of the Housing. This measure makes it easy to achieve that further optimized the ratio of the width of the door closer to the closing spring force becomes.

The position of the spring contact surface of the spring guide head is preferably relative adjustable to the housing in the axial direction of the helical compression spring, so that the basic closing force of the device can be selected appropriately. The axial ver adjustability is preferably achieved in that the spring guide head by means an eccentric screw accessible from the outside is stored in the housing and through Turning the eccentric screw is adjustable in the axial direction. This gives comfortable handling.

If the connection device is one, preferably via a thread, axially has adjustable adjusting rod, on the one hand with the control cam and on the other hand is effectively connected to a connecting plate, so here created by a way, the location of the trained as a rest area  Control section of the first control curve with respect to the actual opening to adjust the angle of the door. This arrangement preferably results in a variable positioning of the locking area, and thus the locking position of the door a door opening angle range of 80 ° to 95 °.

The piston-cylinder arrangement has a first damping area for closing swing the door and a second damping area for the final stroke When the door is opened, the door swings slowly towards great damping and fast, powerful closing of the door allows relatively low damping of the door.

Further advantages, features and possible uses of the present Invention result from the following description of an embodiment example with reference to the accompanying drawing.

Fig. 1 shows a simplified embodiment of a door locking device according to the invention in a side view in a state corresponding to an open door;

Fig. 2 shows the door locking device of Fig. 1 in the front view visible after installation;

Fig. 3 shows schematically the elements arranged inside the door closing device shown in Fig. 1 in a state which corresponds to a closed door;

Fig. 4 shows a view similar to Fig. 3, but in a state corresponding to an open door; and

Fig. 5 shows a side view of the embodiment of Fig. 1 in a partial section

Fig. 6 shows a second embodiment of the door closing device according to the invention in a sectional side view in a state which corresponds to a closed door;

Fig. 7 shows the door lock device in a state corresponding to an open door;

Fig. 8 shows the door locking device of Fig. 6 in the front view visible after installation;

Fig. 9 shows a control cam of the door closing device of the second embodiment.

For the sake of simplicity of presentation, it is assumed below that that the door locking device is generally installed in the door frame. This Be However, all increases are to be understood in such a way that the installation in the door frame or can be done in the door leaf.

Furthermore, the following are also intended to simplify the illustration all references to a parallel arrangement of spring device and Kol ben-cylinder arrangement can be understood so that one in the invention Meaning not concentric arrangement to each other.

As shown in FIGS. 1 and 2, the door closing device 10 according to the invention has a housing 11 , a cylinder block 42 for receiving a piston-cylinder arrangement 13 , a spring device 19 acting in the closing direction and a locking mechanism 35 with which the Spring device 19 and the piston-cylinder arrangement 13 are connected via a common connecting member 20 and which ends in a connecting device 34 .

The housing 11 is intended for installation (in direction A) in a door frame or door leaf, where it is fixed by screws which are held in corresponding receptacles 51 . The connection device 34 , which is formed from a connection plate 33 fixed to the door and a fork receiver 32 connected to a universal joint arrangement 30 , is fixed to the opposite door leaf or door frame. This is also done by means of screws which are held in corresponding receptacles 52 (see FIG. 2).

The interaction of the individual components is shown schematically in FIGS. 3 and 4.

The locking gear 35 comprises, starting from the fork receiver 32 of the connection device 34, a universal joint arrangement 30 , an articulated lever 25 connected to the universal joint device 30 in an articulated lever articulation point 27 , which articulated lever 25 is articulated on the housing 11 by means of a pivot pin 26 , and a control lever 22 is that in a Steuerhebelan steering point 23 articulated to the articulated lever 25th

The control lever 22 is pivotally connected to a connecting member 20 . When opening and closing the door, the connection means 34, ben from the built-in door frame housing 11 opposite to the mounting direction A abgeho is, whereby the closing gear 35 lifts the connecting member 20 and lowers (the direction information is valid for a corresponding to FIGS built-in door closer).

The locking mechanism is advantageously supported on the housing via a pivot pin se, which is preferably closer to the axis of the screw rod than to the Piston rod is arranged. The pivot is therefore preferred when arranged correspondingly closer to the piston-cylinder arrangement behind the spring device arranged on the exposed wall of the door locking device, which in total leads to more favorable leverage ratios.

The housing 11 is provided on the back with a recess through which a flange 41 is formed which is oriented transversely to the stroke direction of the connecting member 20 . A screw rod 15 is rigidly connected to the connecting member 20 and extends out of the housing 11 and beyond the flange 41 in the stroke direction of the connecting member 20 . At the other end, the screw rod 15 is provided with an external thread onto which a driver 28 designed as a nut is screwed, the circumference of which is suitably designed for the attachment of a suitable tool.

A helical compression spring 17 is clamped on the screw rod 15 between the flange 41 and a spring contact surface 29 of the driver 28 acting as a spring guide head. In door opening movements, which corresponds to a lifting of the connecting member 20 , the screw rod 15 and thus the driver 28 is raised accordingly, so that the helical compression spring 17 is compressed between the flange 41 and driver 28 with the build-up of a closing force. The spring device 19 is thus formed by the screw rod 15 , the helical compression spring 17 and the driver 28 .

In the installation direction A (see FIG. 1) behind the spring device 19 , an L-shaped block 42 is fixed to the housing 11 . The longer leg of the block 42 extends parallel to the spring arrangement 19 towards the flange 41 . The shorter leg extends against the installation direction A under the spring device 19 towards the lower part of the housing 11 and is provided with a guide hole for receiving the lower part of the screw rod 15 (not shown).

On the part of the housing 11 opposite the short leg of the block 42 , a dovetail-like groove is formed, into which a correspondingly designed cantilever element 43 is inserted, the cantilever arm of which extends under the short leg of the block 42 . As in the Teilschnittdar position of FIG. 5 can be seen, the block is further fixed 42 to the housing 11 by means of two screws 60, 61. One screw 60 extends through a corresponding receptacle 54 (see FIG. 2) in the housing 11 and through the anchoring section of the cantilever element 43 . The other screw 61 extends from above through a corresponding receptacle in the part of the housing 11 that forms the flange 41 .

The block 42, which can thus be fixed on the housing 11, is provided with a continuous cylinder bore 37 (see FIGS. 3 and 4). A piston rod 14 is fixed to a section of the connecting member 20 extending above the cylinder bore 37 by means of a rotary joint 21 . Thus, stroke movements of the connecting link 20 lead to corresponding lifting movements of a piston 16 arranged at the other end of the piston rod 14 irr the cylinder bore 37 .

Through the swivel connection of the piston rod and connecting link is achieved that the piston-cylinder worked with fine tolerances Arrangement not tilted. This avoids that everyone else Parts of the door locking device must have fine tolerances.

The upper end of the cylinder chamber 37 is sealed by a (not shown) sleeve against the piston rod 14 . The cylinder space 37 is sealed at the lower end by a screw plug 44 .

The piston-cylinder arrangement has in block 42 a throttle device 50, not shown (see Fig. 4), the characteristics (speed, closing speed, etc.) can be influenced in a manner known per se by corresponding adjusting elements 46 , 47 .

Furthermore, the door closing device 10 has a fixing device 40 (see FIG. 4) which essentially consists of a threaded pin which can be screwed into a threaded hole 53 (see FIG. 2) in the housing 11 . If the grub screw is screwed in when the door is correspondingly wide open, it engages behind the connecting element 20 and thus causes the door locking device to be fixed in this position. The door locking device can thus be easily installed and removed. It is preferably delivered in such a fixed state.

As already explained above, the screw pressure of FIG. 17 is compressed when the door is opened, the piston-cylinder arrangement 13 being designed such that the opening movement does not substantially counter any additional pressure, that is to say the hydraulic fluid contained therein is relatively unimpeded by the above the piston 16 located part of the cylinder bore 37 in the underlying which can flow. If the door is now released, the screw compression spring causes the driver 28 and thus the connecting member 20 to be pressed down. As a result, the closing process of the door is initiated by means of the locking gear 35 and the connecting device 34 connected to the door. The closing process is now dampened by the piston-cylinder arrangement 13 . This is because the backflow of the hydraulic fluid from the part of the cylinder bore 37 located under the piston 16 into the part above it is suitably throttled by the adjustable throttle device 50 , so that a pleasant closing process results.

In this embodiment according to the invention, the spring device 19 and the piston-cylinder arrangement 13 are arranged one behind the other in the installation direction A. Furthermore, the helical compression spring 17 is supported in an exposed manner, so that its outer diameter can approximate the overall width of the housing 11 . The screw rod 15 can be dimensioned relatively thin, so that the ratio of the housing width to the spring force is optimized. With the usual requirements for the closing force, a particularly narrow door closer can be built. A typical housing width is e.g. B. at 20 or 24 mm. It is thus clear that the door closer according to the invention can also be installed in relatively thin door leaves (for example 40 mm) or in folded door leaf door frame arrangements, which contributes to its universality.

Due to the design of the piston-cylinder arrangement 13 in a block 42 separate from the housing 11 , the part to which high tolerance requirements have to be met is kept relatively small. So z. B. the housing 11 in the aluminum die casting process, in which the tolerances are relatively high. The block 42 , on the other hand, is first rough-machined from an extruded aluminum piece and then machined so that the required tolerances can be achieved.

The dovetail connection between the cantilever element 43 and the housing 11 leads to the block 42 being securely supported on the housing 11 despite the high forces that occur. The additional screw connections increase the strength and the accuracy of the position of the block 42 with respect to the housing 11 .

The locking gear 35 is designed so that there is a lever transfer, because the control lever pivot point 23 is arranged much closer to the pivot 26 than at the articulated lever pivot point 27 , and on the other hand, the locking gear 35 influences the damping characteristics of the door closer 10 , because the locking gear 35 is formed so that during an opening movement of the door during the circular movement of the control lever pivot point 23 , an axial and then a radial movement component with respect to the stroke axis (extension of the screw rod 15 ) predominates. Assuming a constant throttle cross section of the throttle device 50 , the spring closing force in the initial region of the closing movement is a relatively small and in the end region a relatively large hydraulic resistance. The closing movement of the door is initially faster and then slower.

In Figs. 6 to 9 is a second, particularly preferred embodiment of the door locking device according to the invention shown. Individual elements of this embodiment, which are also contained in the first embodiment described in connection with FIGS. 1 to 5, are provided with the reference numerals increased by the value 100 in each case.

The locking mechanism 135 of this door locking device 110 has a control cam 62 and a spring arm 60 designed as a cam follower and a damper arm 61 designed as a cam follower. The spring rocker arm 60 and the damper rocker arm 61 are pivotably mounted on the housing 111 about a common axis of rotation 67 independently of one another. For this purpose, one of the two rockers with a fork-shaped bearing approach and the other Schwin ge with a usable in the space formed by the fork-shaped bearing approach bearing approach, the axis of rotation 67 passes through a transverse bore in the bearing approaches of the two rockers and in ent speaking bearing holes in the housing 111 is supported.

The spring rocker 60 has a swivel arm pointing away from the axis of rotation 67 , the lower edge of which (with respect to the view shown in FIG. 6) is provided with a rolling surface 60 '. The rolling surface 60 'is in Wälzein handle with a nen in a pre-see the upper end of the spring support rod 115 spring support rod head 115' mounted rolling wheel 115 '. Instead of the Wälzra of 115 "may also be a corresponding sliding surface be provided on the spring support rod head 115'.

At the upper edge of the pivot arm of the swing arm 60, a rolling roller 60 is rotatably supported "in a fork bearing of the swing arm 60 (see Fig. 9) rolls on a first control cam 63 of the control cam 62nd

The damper rocker arm 61 is provided with a lower sliding surface 61 'which is in sliding contact with a piston rod head 114 ' which is provided at the upper end of the piston rod 114 of the piston-cylinder arrangement 113 . By means of a piston spring 116 'provided in the lower region of the cylinder of the piston-cylinder arrangement 113, which presses the piston 116 upward with the aid of force on a locking screw 113 ' screwed into the housing 111 , the piston rod head 114 'is constantly in contact with the sliding surface 61 'of the damper rocker 61 held and adjusted accordingly.

In the upper area, the swivel arm of the damper rocker 61 is fork-shaped and rotatably receives a roller 61 "in the fork, which runs on a second cam 64 of the control cam 62 .

The spring device 119 is provided at its lower end with a spring guide head 128 which has an upper spring contact surface 129 on which the helical compression spring 117 is supported. The spring guide head 128 is adjustable by means of an eccentric screw 70 which penetrates the spring guide head 128 substantially at right angles to the axis of the helical compression spring 117 and is mounted in the housing 111 in the axial direction of the helical compression spring 117 . The eccentric screw 70 can be actuated from the front side of the housing (see FIG. 8), so that the spring force and thus the closing torque of the door can be adjusted even when the door closing device is installed.

Also in this second embodiment, the damping characteristic of the piston-cylinder arrangement can be adjusted by a damping regulating screw 146 as well as by an end stop regulating screw 147 , each corresponding free cross-section for the flow of the damping fluid in the piston-cylinder arrangement 113 between the two sides of the piston 116 located cylinder chambers adjustable. The damping regulating screw 146 and the end stop regulating screw 147 are accessible from the end face of the housing 111 , as can be seen from FIG. 8. This closing speed control can be thermally stabilized.

The connecting device 134 is constructed in principle as in the first exemplary embodiment, but the universal joint arrangement 130 provided on the connecting plate 133 is provided with an adjusting rod 131 which connects the universal joint arrangement 130 to the control cam 62 in an articulated manner. The adjusting rod 131 is axially adjustable by means of an adjusting nut 131 ', so that the distance between the articulation point of the adjusting rod 131 on the Steueroc ken 62 and the connecting plate 133 is adjustable in length. As a result, the angular position of the control cam 62 within the locking mechanism 135 is changed, as a result of which a latching position of the door described below can be adjusted within an angular range of approximately 80 ° to 95 ° door opening angle.

In Fig. 9, the control cam 62 is shown enlarged to explain the control curves provided on it. The first control curve 63 , which is in rolling engagement with the rolling roller 60 ", is spatially separated from the second control curve 64 , which is in rolling engagement with the rolling roller 61 ". The end area of the second control curve 64 and the start area of the control curve 63 can overlap slightly.

In the initial region of the first control curve 63 adjacent to the second control curve 64 , a steeper control curve section 65 is provided, which is assigned to the initial region of the door opening movement. As a result, a greater pressure resistance must first be overcome when the door is opened, since the force required to pivot the control cam due to the steeper cam section 65 against the force of the helical compression spring 117 is greater than in the rest of the first cam 63 . On the one hand, this creates a desired initial resistance when opening a door and, on the other hand, ensures that the door is pulled securely into the lock when closed by a spring force which is increased by the steeper cam curve section 65 .

In the cam section of the first cam 63 facing away from the second cam 64 , a latching area 66 is formed, which holds the roller 60 "in an over-center position, whereby the door is locked in its open position. This over-center position can only be achieved again by applying a closing force to the door be overcome, whereby the roller 60 "comes back to the first cam 63 outside the locking area 66 and then the closing movement of the door proceeds in the usual way.

The control cam 62 is provided with a lateral opening 62 ', into which a locking pin 62' used as a transport and mounting securing, preferably as screwed, is. The locking pin 62 "stands on the front side wall of the housing out and penetrates a slot opening 111 'in housing 111 . The applied by the helical compression spring 117 on the control cam 62 , acting in Fig. 6 or 7 clockwise pivoting force ensures that the locking bolt 62 "on the upper edge of the slot opening 111 'is supported and thus locks the locking mechanism in one position which corresponds approximately to a door opening angle of 80 °. This enables the door locking device to be installed.

Other variants of the door closing device according to the invention are also Combinations of the described first and second execution devices  conceivable, for example an embodiment in which the cam control of the Piston-cylinder unit through the fixed coupling of the piston-cylinder unit with the spring device from the first embodiment is replaced.

Reference list

10th

Door locking device

11

casing

13

Piston-cylinder arrangement

14

Piston rod

15

Screw rod

16

piston

17th

Helical compression spring

19th

Spring device

20th

Fastener

21

Swivel

22

Control lever

23

Control lever pivot point

25th

Articulated lever

26

Pivot

27

Articulated lever pivot point

28

Carrier

29

Spring contact surface

30th

Universal joint arrangement

32

Fork receiver

33

Connecting plate

34

Connection device

35

Locking gear

37

Cylinder bore

40

Fixing device

41

flange

42

block

43

Cantilever

44

Screw plug

46

Adjustment element

47

Adjustment element

50

Throttle device

51

admission

52

admission

53

Threaded hole

54

admission

55

Grub screw

56

screw

57

screw

60

Spring arm

60

'Rolling surface

60

"Rolling roller

61

Damper swingarm

61

'' Sliding surface
61 "roller

62

Control cam

62

'Drilling
62 "locking bolt

63

first control curve

64

second control curve

65

steep cam section

66

Rest area

67

Axis of rotation

70

Eccentric screw

110

Door locking device

111

casing

111

'' Slot opening

113

Piston-cylinder arrangement

113

'' Cylinder screw

114

Piston rod

114

'' Piston rod head

115

Spring support rod

115

'' Spring support rod head

115

"Gear wheel

116

piston

116

'' Piston spring

117

Helical compression spring

119

Spring device

128

Lead head

129

Spring contact surface

130

Universal joint arrangement

131

Adjusting rod

131

'' Adjusting nut

133

Connecting plate

134

Connection device

135

Locking gear

146

Damping regulating screw

147

End stop regulating screw

Claims (12)

1. Door locking device ( 10 , 110 ) for attachment in a door frame or door leaf, comprising

• 1. a housing ( 11 , 111 ),
• 2. a spring device ( 19 , 119 ) acting in the closing direction and
• 3. a piston-cylinder arrangement ( 13 , 113 ) having a throttle device ( 50 ) and acting hydraulically against the closing direction,
• 4. wherein the spring device ( 19 , 119 ) and the piston-cylinder arrangement ( 13 , 113 ) via a locking mechanism ( 35 , 135 ) with a connection device ( 34 , 134 ) for connection to a door leaf or door frame are connected ,
• 5. the spring device ( 19 , 119 ) and the piston-cylinder arrangement ( 13 , 113 ) are not arranged concentrically to one another,
• 6. the locking gear ( 35 , 135 ) a first, the spring device ( 19 , 119 ) associated gear element ( 22 , 60 ), a second, the piston-cylinder arrangement ( 13 , 113 ) associated gear element ( 20 , 61 ), and at least a third gear element ( 25 , 62 ) which is assigned to the connection device ( 34 , 134 ),
• 7. the first gear element ( 60 ) as a spring rocker, the second gear beelement ( 61 ) as a damper rocker and the third gear element ( 62 ) are designed as control cams,
• 8. the third gear element ( 62 ) has at least one control curve for the spring rocker and for the damper rocker and
• 9. the control cam ( 62 ) has a first control cam ( 63 ) on which the spring rocker ( 60 ) runs, and a second control cam ( 64 ) on which the damper rocker ( 61 ) runs.

2. Door closing device according to claim 1, wherein the first control cam ( 63 ) for controlling the spring rocker ( 60 ) has a steeper, the start region of the door opening movement associated th cam section ( 65 ). 3. Door locking device according to claim 1 or 2, wherein the first control cam ( 63 ) for controlling the spring rocker ( 60 ) has a control portion assigned to the end region of the door opening movement, which is designed as a latching region ( 66 ). 4. Door locking device according to one of the preceding claims, wherein the spring arm ( 60 ) and the damper arm ( 61 ) on the housing ( 111 ), preferably about a common axis of rotation ( 67 ), are pivotally mounted independently of one another. 5. Door closing device according to one of the preceding claims, wherein the spring device ( 19 , 119 ) and the piston-cylinder arrangement ( 13 , 113 ) are arranged one behind the other in the installation direction (A). 6. Door locking device according to one of the preceding claims, wherein the piston-cylinder arrangement ( 13 , 113 ) is arranged in the installation direction (A) behind the spring device ( 19 , 119 ). 7. Door locking device according to one of the preceding claims,
wherein the piston-cylinder arrangement ( 113 ) has a piston rod ( 114 ) whose end opposite the piston ( 116 ) can be brought into engagement with the damper rocker arm ( 61 ) via a piston rod end ( 114 '), for which purpose the piston ( 116 ) against the damper rocker arm ( 61 ) which holds the piston spring ( 116 '), and
wherein the spring device ( 119 ) has a spring support rod ( 115 ) which can be brought into engagement with the spring rocker ( 60 ) via a spring support rod head ( 115 '). 8. Door locking device according to claim 7, wherein on the spring support rod ( 115 ) a helical compression spring ( 117 ) is arranged, which is at one end on a spring contact surface ( 129 ) of a spring guide head ( 128 ) mounted on the housing ( 111 ) and with its other end on the spring support rod head ( 115 '). 9. Door locking device according to one of the preceding claims, wherein the circumference of the helical compression spring ( 17 , 117 ) is approximately equal to the width of the housing ( 11 , 111 ). 10. Door locking device according to claim 5 or 6, wherein the position of the spring contact surface ( 29 , 129 ) of the spring guide head ( 28 , 128 ) relative to the housing ( 11 , 111 ) in the axial direction of the helical compression spring ( 17 , 117 ) is adjustable. 11. Door locking device according to one of the preceding claims, wherein the connecting device ( 134 ) has a preferably preferably via a thread, axially adjustable adjusting rod ( 131 ) which is connected on the one hand to the control cam ( 62 ) and on the other hand to a connecting plate ( 133 ). 12. Door locking device according to one of the preceding claims, wherein the piston-cylinder arrangement ( 13 , 113 ) has a first damping area for pivoting the door and a second damping area for the end stop for closing the door.