EP1333139B1 - Additional lock for doors or windows - Google Patents

Description

The invention relates to an additional lock for a window or a door, according to the preamble of claim 1. Such an additional lock is used for additional security of the window or the door against a violent breakup. For this purpose, the locking bolt engages in the locking position in an associated locking piece on the window or the door or in a lock box, depending on whether the additional lock is provided for outwardly or inwardly opening windows or doors.

For outwardly opening windows and doors, it is known to produce the base of die-cast zinc, wherein the base has a housing for receiving a lock cylinder and a locking mechanism for connecting the lock cylinder with the locking bolt at a located opposite to the locking direction rear side area. At a front side area located in the locking direction and within a central area of the base, fastening openings are provided by means of which the base part can be screwed to the window or the door. At this front side region, the base part also has a recess for guiding the locking bolt during the locking movement. The base with the locking mechanism contained therein is closed on its underside by a bolted cover plate. In such an additional lock, the base is provided after its attachment to the window or the door with the cover part.

From the US-A-5,618,066 a locking device with a pin is known, which is mounted displaceably in a housing.

The NL-C-1012724 shows an additional lock with a base, a securable locking bolt and a fastened to the base lid part.

It is an object of the invention to allow for simple production and high security against burglary a wider range of applications of the window / door additional lock.

This object is achieved by an additional lock with the features of claim 1.

In the additional lock according to the invention are thus provided at two - with respect to the locking direction - opposite areas fastening means by means of which the base attached to the window or the door, for example, can be screwed. These areas are referred to in the context of the invention as front side area and rear side area. Likewise, both on the front side region and on the rear side region, a locking holding means, for example a bending tongue provided with a receiving opening through which the locking bolt is guided and held in the event of a break-in attempt on the base.

Thus, the additional lock according to the invention is suitable for reliable securing of both outwardly opening and inwardly opening windows and doors. In these two applications, namely in the case of a break-in attempt on the additional lock very different loading forces are exercised. Due to the arrangement of fasteners and latch retaining means both on the front side and on the rear side portion of the base, these forces can be optimally absorbed and distributed in both applications.

In particular, it takes into account the fact that in attempting to forcibly open an outwardly opening window, mainly the front-side fasteners and the front-latch retaining means are tensioned, while in the case of a break-in attempt on an inwardly-opening window, the back side portion of the base is mainly tensioned.

The additional lock according to the invention thus has the advantage that it is compatible for the two described loading cases, so that it is suitable for use in a wide range of applications.

It should also be noted with regard to the arrangement according to the invention of the fastening devices and the locking means that said front side area and rear side area are to be distinguished from a central or central area of the base part. In particular, the front side area and the rear side area are formed by the front or rear third of the base part, preferably even only by the front or rear quarter of the base part.

It should also be noted that it is irrelevant to the universal applicability of the invention whether the base is attached to the sash and the associated counterpart on the frame or soffit, or vice versa. Furthermore, the invention is also suitable for additional locks with several, in particular parallel guided locking bolts readily.

According to the invention, a lock cylinder, which is provided for securing the locking bolt in the locking position, or a locking cylinder housing connected to this locking cylinder, can be preassembled on the cover part. For this purpose, on the one hand and on the lock cylinder or the lock cylinder housing on the other hand cooperating fastening means, for example latching means are provided on the cover part.

Namely, if the lock cylinder can be preassembled on the cover part and therefore not provided for pre-assembly on the base or integrated in this, exist on the part of the base with respect to the arrangement of the fasteners and locking means no unwanted restrictions by the presence of the lock cylinder. The fastening devices and latch holding means can thus be arranged optimally for the respective loading case on the front side area and the rear side area of the base part in order to achieve the explained advantage of the universal application possibility. Also, the attachment of the base to the window or the door, in particular a screwing of the base is easier because the - pre-assembled on the part of the cover - lock cylinder does not affect the accessibility of the fasteners.

An additional lock according to the invention thus makes possible the following advantageously simple assembly and fastening of the auxiliary lock: First of all, the lock cylinder is preassembled on the cover part at the factory. Furthermore, the locking bolt can be preassembled on the base. The user attaches the base of the thus preassembled lock in the desired position on the window or the door. Finally, for the purpose of final assembly, the user fastens the preassembled cover part to the already preassembled base part which is fastened to the window or door. Furthermore, the user can attach a possible counterpart to the window or the door.

According to a preferred embodiment, a rotatable biased rotary latch is provided, wherein the rotary latch cooperates for locking or releasing the locking bolt on the one hand with the locking latch and on the other with the lock cylinder. Such a coupling of lock cylinder and locking bolt via a rotary latch has the advantage that an advantageously comfortable automatic function for locking the locking bolt can be realized without the risk of unauthorized unlocking of the locking bolt by external impacts on the locking mechanism.

In the so-called automatic function, a preloaded locking bolt can be brought from the release position into the locking position by simple manual pressing movement - without rotational actuation of the cylinder lock. It snaps between the locking bolt and the lock cylinder provided latch mechanism back briefly to allow first to pass the locking bolt and then to block the locking bolt in the locked position. If this locking mechanism is formed linear, ie guided in a straight line, an acceleration can be brought about by intermittent impacts from the outside, which can lead to an unwanted release of the previously blocked locking bolt. However, by the locking mechanism between the lock cylinder and locking bolt is designed as a rotating bolt and can be generated by such blows on the additional lock no spin of the latch mechanism is in this embodiment - despite automatic function - unauthorized unlocking prevented by such a shock treatment effectively.

Furthermore, it is preferred if the base part is designed as a side view U-shaped bracket with a base plate and two hole legs, which form the locking means for the locking bolt. Such a U-bracket has a simple structure and can be made particularly simple - for example, by a punching / bending process. The locking means are formed in this case by receiving openings which define a common passage for the locking bolt. The fastening devices can be formed in a simple manner by punched fastening openings.

In addition, such a U-bracket can be readily made of steel, in particular made of tempered steel, which - especially against a base made of zinc die-casting - a particularly high stability and safety is achieved.

Further, it is preferred if the locking bolt is provided with a locking pin which can be inserted or pressed, for example, in a securing channel, which extends transversely to the longitudinal direction of the locking bolt. Such a locking pin can serve, for example, to permanently connect an actuating element with the locking bolt, by which the locking bolt - in particular for the explained automatic function - can be manually operated. Alternatively or additionally, such a locking pin serve as a stop element, which secures the locking bolt in the release position against further movement against the locking direction.

In the event that the locking bolt is biased by a spring element against the locking direction, it is also advantageous if a damping device is provided by which the release movement of the locking bolt is counteracted against the locking direction. As a result, premature wear of the additional lock is avoided. The damping device may, for example, a sheath, in particular made of plastic, on said locking pin of the locking bar. Alternatively or additionally, a damping element, for example, made of foam, for example, be glued to the base, the cover part or the locking bolt, which dampens a surcharge of the locking bolt or the locking pin.

Further embodiments of the invention are mentioned in the subclaims.

Fig. 1

eine Perspektivansicht eines an einem Fensterflügel endmontierten, verriegelten Zusatzschlosses,

Fig. 2a und 2b

eine Seitenansicht der Anordnung eines Zusatzschlosses an einem nach außen bzw. nach innen öffnenden Fenster,

Fig. 3

eine Explosionsdarstellung eines erfindungsgemäßen Zusatzschlosses,

Fig. 4

eine Perspektivansicht eines vormontierten Deckelteils,

Fig. 5 und 6

Perspektivansichten eines vormontierten Grundteils in der Freigabestellung bzw. Verriegelungsstellung,

Fig. 7

eine Draufsicht auf das Zusatzschloss in der Freigabestellung,

Fig. 8, 9 und 10

Querschnittsansichten entlang der Ebenen XIII-XIII, IX-IX bzw. X-X gemäß Fig. 7,

Fig. 11

eine Vorderansicht des Zusatzschlosses,

Fig. 12

eine Querschnittsansicht entlang der Ebene XII-XII gemäß Fig. 11 in der Freigabestellung,

Fig. 13

eine der Fig. 12 entsprechende Querschnittsansicht, jedoch in Verriegelungsstellung,

Fig. 14

eine Unteransicht des Zusatzschlosses, und

Fig. 15

eine der Fig. 14 entsprechende Unteransicht des vormontierten Deckelteils.

The invention will now be described by way of example with reference to the drawings; in these show:

Fig. 1

3 is a perspective view of a lock-mounted additional lock mounted on a window sash;

Fig. 2a and 2b

a side view of the arrangement of an additional lock on an outwardly or inwardly opening window,

Fig. 3

an exploded view of an additional lock according to the invention,

Fig. 4

a perspective view of a preassembled cover part,

FIGS. 5 and 6

Perspective views of a preassembled base in the release position or locking position,

Fig. 7

a top view of the additional lock in the release position,

FIGS. 8, 9 and 10

Cross-sectional views taken along the planes XIII-XIII, IX-IX and XX, respectively Fig. 7 .

Fig. 11

a front view of the auxiliary lock,

Fig. 12

a cross-sectional view along the plane XII-XII according to Fig. 11 in the release position,

Fig. 13

one of the Fig. 12 corresponding cross-sectional view, but in the locked position,

Fig. 14

a bottom view of the auxiliary lock, and

Fig. 15

one of the Fig. 14 corresponding bottom view of the preassembled cover part.

Fig. 1 shows an additional lock, through which a closable on its inside, outwardly opening window sash 11 can be additionally secured against forced opening. For this purpose, the additional lock is attached to the inside of the window sash 11 shown. Evident are serving as a cover cover part 13 and arranged on the back of the auxiliary lock actuator 15 which is connected to a (not shown) locking bolt. Furthermore, the top of a lock cylinder 21 can be seen.

In the in Fig. 1 shown state, the actuating element 15 and the locking bolt - have been transferred by prior manual actuation of the actuating element 15 along a locking direction 17 - in a locking position. In this locking position engages a front end of the locking bolt in an in Fig. 1 invisible receiving opening of the window reveal 19, which by a - in Fig. 1 also not visible - Striker is reinforced. By this engagement of the locking bolt in the receiving opening of the window reveal 19 opening of the sash 11 is also prevented to the outside.

The explained manual transfer of actuator 15 and locking bolt in the in Fig. 1 shown locking position is carried out according to a particularly safe automatic function, which will be explained below. The unlocking of the additional lock shown by rotation of the lock cylinder 21 by means of the associated key. As a result, the - biased by a spring element - locking latch is released so that it strikes against the locking direction 17 in a release position and his front end disengaged from the receiving opening of the window reveal 19.

Fig. 2a and 2b illustrate the suitability of the additional lock according to the invention for reliable protection both from the outside, as well as from inwardly opening windows or doors.

Shown are in Fig. 2a and 2b each of the window reveal 19, the window sash 11 and its respective opening direction 23rd

In addition, a base 25 of the additional lock is shown in each case. This is designed as a U-bracket, with a base plate 27 and two hole legs 29, 31. On the base plate 27 mounting holes 33, 35 are formed, through which the base 25 is fixed by means of fastening screws 37 on the window sash 11.

The one hole leg 29 and the attachment openings 33 are arranged within a front side area 39 of the base part 25, that is to say at the end of the base part 25 located in the locking direction 17. The other hole leg 31 and the attachment openings 35 are provided within a rear side area 41. that is, at the opposite end of the locking direction 17 of the base 25th

Within the hole legs 29, 31, a cylindrical locking bolt 43 is guided. This is in the locking position in which it is in a receiving opening 45 of the window reveal 19 (FIG. Fig. 2a ) or in a receiving opening 47 of an L-shaped counterpart 49 which is fastened by means of a fastening screw 51 to the window reveal 19 ( Fig. 2b ).

If an attempt is made in Fig. 2a shown to open outward opening window from the outside by force, so occur at the additional lock the following load forces. The front end of the locking bar 43 held by the hole legs 29, 31 bears against the boundary of the receiving opening 45 in the opening direction 23. The locking bolt 43 is thereby forced to pivot, wherein it loads the front-side hole leg 29 against the opening direction 23 and the rear side of the hole 31 in the opening direction 23. As a result, tensile forces occur on the front side region 39 between the base part 25 and the window sash 11 and compressive forces on the back side region 41. Thus, the guided through the front mounting holes 33 mounting screws 37 are disposed at an optimum point of action to prevent detachment of the base 25 of the window sash 11 due to the tensile load between the base 25 and window sash 11. Likewise, in this load situation mainly the front hole leg 29 serves as a locking means for securing the locking bolt 43 on the base 25 against mutual detachment.

Conversely, the load situation in the event of a burglary attempt on the in Fig. 2b shown in opening window: Here, the base 25 exerts on the front side portion 39 on the window sash 11 a pressing force against the opening direction 23. In contrast, it comes to the rear side portion 41 to a tensile load between the base 25 and the window sash 11, since the locking bolt 43 is forced to pivot in a clockwise direction. In this case, the fastening openings 33 and fastening screws 37 provided on the rear side region 41 are arranged at the optimum point of application in order to prevent undesired detachment of the base part 25 from the window wing 11 due to the tensile load. As a bolt holding means for securing the locking bolt 43 on the base part 25, the rear-side hole leg 31 is arranged particularly effectively in this loading situation.

Thus, the additional lock according to the invention for the two in Fig. 2a and 2b shown load situations a particularly reliable protection against a breakage of the locking bolt 43 of the base and against a violent detachment of the base 25 of the window sash 11. The additional lock is thus equally suitable for the two applications.

The following is based on the Fig. 3 to 15 the exact structure of this additional lock explained.

Fig. 3 shows the parts of the additional lock in an exploded view. The base part 25 has a substantially rectangular basic shape, wherein in the region of each corner a front attachment opening 33 or a rear attachment opening 35 is provided. Furthermore Additional fastening openings 53 are provided. Furthermore, the base part 25 has an anti-rotation recess 55 on the base plate 27.

The two hole legs 29, 31 of the base part 25 each have a receiving opening 57 for receiving the locking bolt 43. The rear-side hole leg 31 has a profile contour.

The locking bolt 43 has a cylindrical basic shape and is made of tempered steel, so that it has a particularly high stability. The actuating element 15 has a substantially cuboidal engagement part 59 and a connecting shaft 61 formed thereon. At the end of the connecting shaft 61, a lateral blocking lug 63 is formed. The actuating element 15 and the locking bolt 43 can be preassembled to each other by the locking latch 43 is partially inserted into the connecting shaft 61 and secured there by means of a locking pin 65 which is pressed transversely to the locking direction 17 by securing holes 67 of the connecting shaft 61 in a locking channel 69 of the locking bar 43 becomes (cf. Fig. 5 . 12, 13 ).

As a counterpart for receiving the front end of the locking bolt 43, for example, a striking plate 71 may be provided which has a central receiving opening 73 and two lateral fastening openings 75.

The hood-shaped cover part 13 is open at the bottom and has at the top an access opening 77 for the lock cylinder 21. At the front in the locking direction 17 front are a latch opening 79 and two mounting recesses 81 provided (see. Fig. 4 ).
The rear side of the cover part 13 is designed to be complementary to the profile contour of the hole leg 31 of the base part 25. Furthermore, the cover part 13 has on the inside of its upper side a substantially circular-segment-shaped housing holder 83, which is provided for receiving a locking cylinder housing 21 and a rotary latch 85 enclosing lock cylinder housing 87 and the access opening 77 surrounds (see. Fig. 8, 9 . 12, 13 ). On the outside in the locking direction 17 facing the housing holder 83 is a downwardly projecting locking lug 88 is formed (see. Fig. 4 . 9 ).

The lock cylinder 21 has a lateral Drehblockieransatz 89. On its underside, the lock cylinder 21 has a rotary actuation approach 91 (see. Fig. 4 . 15 ).

The rotary latch 85 has the basic shape of a cylinder jacket open at the end faces with a lateral latch channel recess 93 and a freewheel recess 95 extending therefrom to the upper side of the rotary latch 85 Fig. 3 Clockwise located border of the latch channel recess 93 forms a Mitnehmer- / Blockieransatz 97. Further, two fixing cams 99 are provided for fixing a (not shown) coil spring at the top of the rotary latch 85. On the underside of the rotary latch 85 is a driving lug 101, which cooperates with the rotary actuating projection 91 of the lock cylinder 21, and a blocking lug 102 is formed (see. Fig. 4 . 15 ).

The lock cylinder housing 87 has substantially a ring shape with a lateral Drehblockieraufnahme 103 for receiving the Drehblockieransatzes 89 of the lock cylinder 21. On the underside of the lock cylinder housing 87 are a Sicherungsbund 105 for supporting the rotary latch 85 and a rotation locking cam 107 for engaging in the Drehsicherungsausnehmung 55 of the base 25th educated. On the securing collar 105, a radially inwardly projecting blocking stop 109 is formed, which cooperates with the blocking projection 102 of the rotary latch 85 (see. Fig. 4 . 15 ). The underside of the lock cylinder housing 87 is formed as an annular edge 111 on which the detent 88 of the housing holder 83 engages (see. Fig. 9 . 15 ).

The installation and attachment of the additional lock shown can be done as follows:

First, the lock cylinder 21 is factory pre-assembled on the cover part 13. For this purpose, the lock cylinder 21 is used together with the rotary latch 85 in the lock cylinder housing 87. The lock cylinder housing 87 is then preassembled on the cover part 13 in such a way that it rests against the housing mount 83, being caught by the housing mount 83 and the walls of the cover part 13 and the latching lug 88 latched to the annular edge 111 (cf. Fig. 9 ).

Furthermore, the locking bolt 43 is preassembled on the base part 25 by a counter to the locking direction 17 in an Fig. 10 . 12, 13 shown spring 113 and in the locking direction 17 of the connecting shaft 61 of the actuating element 15 are placed on the locking latch 43 and this arrangement between the two hole legs 29, 31 of the base 25 is fixed by inserting the securing pin 65 in the securing opening 67 and the securing channel 69 (see. Fig. 5 ).

The thus preassembled base 25 can now be attached by the user to the sash 11 by being screwed to the front mounting holes 33 and the rear mounting holes 35 with the sash 11. This attachment of the base 25 is not affected by the presence of the lock cylinder 21 or the lock cylinder housing 87, since they are arranged on the cover part 13.

Subsequently, the preassembled cover part is finally mounted on the thus preassembled and fixed base part 25. For this purpose, the cover part 13 is placed from above, slightly offset in the locking direction 17 on the base 25 and then moved against the locking direction 17. In this case, the rear-side hole leg 31 of the base part 25 and the rear side wall of the cover part 13 due to their complementary profile contour form a positive connection, and also the front end of the locking bar 43 forms with the latch opening 79 of the cover part 13 a positive connection, so that a removal of the cover part 13 of the base 25 is now blocked up. In this relative to the locking direction 17 shifted position, the lid part 13 is fixed to the base part 25 by means of a (not shown) fixing screw. The lock cylinder housing 87 is now located with its underside on the base plate 27 and is thus trapped with respect to the longitudinal axis of the lock cylinder 21.

In the following, the already mentioned automatic function when locking the additional lock shown as well as the unlocking of the lock are explained:

In the release position of the locking bolt 43, this is from a receiving opening 45, 47 (FIG. Fig. 2a, 2b ) or 73 ( Fig. 3 ) retracted against the locking direction 17 due to the spreading force of the spring 113. In this position, the locking bolt 43 is secured by the voltage applied to the rear side of the leg 31 locking pin 65 against escape from the base 25 (see. Fig. 5 . 12 ). In this state, the rotary latch 85 in the in Fig. 4 . 12 and 15 held angular position by a coil spring, not shown, on the fixing cam 99 and the Drehblockieransatz 89 engages and the rotary latch 85 thereby to one - with respect to the representation according to Fig. 12 - Counterclockwise directed rotational movement forces, and by the other to the blocking lug 102 of the rotary latch 85 to the blocking stop 109 of the lock cylinder housing 87 and thereby prevents further rotation of the rotary latch 85 (see. Fig. 15 ). Due to the interaction of the Mitnehmeransatzes 101 of the rotary latch 85 with the rotary actuation approach 91 of the lock cylinder 21 and the lock cylinder 21 is in a defined position.

Starting from this release position, the locking bolt 43 - can be brought into the locking position by simple manual actuation of the actuating element 15 along the locking direction 17 - without rotational actuation of the lock cylinder 21. In the course of such a rectilinear movement of the locking bar 43, the blocking lug 63 abuts on the driver / blocking lug 97 of the rotary latch 85 and causes the biased rotary latch 85 thereby to a rotational movement relative to the lock cylinder housing 87, in the view according to Fig. 12 is directed in a clockwise direction. During this rotational movement of the rotary latch 85, the driver lug 101 releases from the rotary actuation lug 91 of the lock cylinder 21 and moves in the direction of the blocking stop 109 of the lock cylinder housing 87th

As soon as the blocking lug 63 of the actuating element 15 has passed the driver / blocking lug 97, which has been turned away against the bias of the rotary latch 85, the rotary latch 85 rotates back into the starting position due to the torque exerted by the spiral spring. The locking bolt 43 is now in the locking position (see. Fig. 6 . 13) , The spring 113 is now compressed. A release movement of the locking bolt 42 is prevented due to the concern of the blocking lug 63 on the rotary latch 85.

A release of the locking bolt 43 can now only be effected in that - by means of the matching key - the lock cylinder 21 is rotatably actuated. By a - according to the representation according to Fig. 15 - Counterclockwise directed rotational movement of the lock cylinder 21, the rotary latch 85 is rotated by the interaction of its Mitnehmeransatzes 101 with the rotary actuation approach 91 of the lock cylinder 21. As a result, the driver / blocking lug 97 of the rotary latch 85 is moved past the blocking lug 63 of the actuating element 15 (cf. Fig. 13 ). The blocking lug 63 can thus pass the rotary latch 85 along the latch channel recess 93. Therefore, the compressed spring 113 causes a repelling of the locking bolt 43 against the locking direction 17. As soon as the lock cylinder 21 and the Inserted keys are released again, move the biased rotary latch 85 and the lock cylinder 21 back into the in FIGS. 12 and 15 shown starting position back.

In the locking mechanism of the additional lock shown, a lock can therefore be done automatically, without actuation of the lock cylinder 21, and the locking of the locking bar 43 in the locked position by means of a rotary latch 85, which offers despite this automatic function particularly high security against unauthorized unlocking by intermittent impact acceleration ,

Finally, it should be noted in addition to the additional lock that this also provides a safeguard against unauthorized unlocking by pressing the locking bolt 43 against the locking direction 17. In such impressions the blocking nose 63 would the rotary latch 85 to a - based on the illustration according to Fig. 13 - force counterclockwise rotation. However, the rotary latch 85 is blocked against such a rotational movement, since on the one hand, the blocking lug 102 on its underside against the blocking stop 109 of the lock cylinder housing 87 abuts (see. Fig. 15 ), And since on the other hand, the eccentrically arranged anti-rotation cam 107 of the lock cylinder housing 87 engages in the anti-rotation recess 55 of the base 25.

LIST OF REFERENCE NUMBERS

11

casement

13

cover part

15

actuator

17

locking direction

19

Fensterlaibung

21

lock cylinder

23

Opening direction of the window or the door

25

base

27

baseplate

29

Loch leg

31

Loch leg

33

fastening opening

35

fastening opening

37

fixing screw

39

Front area

41

Rear area

43

deadbolt

45

receiving opening

47

receiving opening

49

counterpart

51

fixing screw

53

fastening opening

55

Drehsicherungsausnehmung

57

receiving opening

59

engaging member

61

connecting shaft

63

blocking nose

65

safety pin

67

securing aperture

69

backup channel

71

striking plate

73

receiving opening

75

fastening opening

77

Lock cylinder access opening

79

bolt opening

81

mounting recess

83

housing support

85

Spagnolet

87

Lock cylinder housing

88

locking lug

89

Anti-rotation approach

91

Rotary actuator tab

93

Locking channel recess

95

Freewheel recess

97

Carrier / locking approach

99

locating lugs

101

drive dog

102

blocking lug

103

Rotation blocking uptake

105

safety collar

107

Rotation cam

109

blocking stop

111

annular edge

113

feather

Claims (10)

1. An additional lock for a window (11, 19) or a door, at least comprising

   - a base part (25) fastenable to the window or to the door;

   - a closing bolt (43) which is movable from a release position along a latching direction (17) into a latching position for the latching of the window or of the door,

   wherein the base part (25) has in each case at least one fastening device (33, 35) at a front side region (39) disposed in the latching direction (17) and at a rear side region (41) disposed against the latching direction (17) for the fastening of the base part to the window or to the door; and
   wherein the base part (25) has in each case at least one bolt holding means (29, 31) at the front side region (39) and at the rear side region (41) for the securing of the closing bolt (43) to the base part in the latching position,
   characterised
   by a cover part (13) fastenable to the base part and by a lock cylinder (21) for the securing of the closing bolt (43) in the latching position,
   wherein the cover part (13), on the one hand, and the lock cylinder (21) or a lock cylinder housing (87), on the other hand, have cooperating fastening means (88, 111) for the preinstallation of the lock cylinder (21) at the cover part (13).
2. An additional lock in accordance with claim 1, characterised in that the fastening means are formed by latching means (88).
3. An additional lock in accordance with any one of the preceding claims, characterised in that the base part (25) and the cover part (13) have cooperating connection means (31, 79, 43) for the final installation of the preinstalled cover part at the base part,
   wherein the connection means preferably form a shape matched connection.
4. An additional lock in accordance with any one of the preceding claims, characterised in that a rotationally movable biased rotational bolt (85) is provided which cooperates with a locking means (63) of the locking bolt for the latching or release of the locking bolt (43) and is rotationally actuably connected to the lock cylinder (21) via a catch device (101).
5. An additional lock in accordance with claim 4, characterised in that the locking means of the locking bolt has a locking nose (63) which cooperates with a catch/locking nose (97) of the rotary bolt; and/or
   in that the lock cylinder (21) has a rotary actuation element (91) which cooperates with the catch device (101) of the rotary bolt for the rotary actuation of the rotary bolt (85); and/or
   in that the rotary bolt (85) can be preinstalled at the cover part (13) together with the lock cylinder (21).
6. An additional lock in accordance with one of the claims 4 and 5, characterised in that a device providing security against rotation is provided by which the rotary bolt (85) is secured against an unauthorised rotary movement relative to the base part when the cover part (13) s finally installed at the base part (25),
   wherein the device providing security against rotation in particular has a recess (55) providing security against rotation and a cam (107) providing security against rotation which is in engagement with it, which are formed at the rotary bolt, at the lock cylinder or at a lock cylinder housing (87), on the one hand, and at the base part (25), on the other hand.
7. An additional lock in accordance with any one of the preceding claims, characterised in that the base part (25) has a substantially rectangular basic shape, with a fastening device (33, 35) being provided in the region of each corner; and/or
   in that the fastening devices of the base part (25) are formed by fastening openings (33, 35); and/or
   in that the base part (25) is made as a U hoop with a base plate (27) and two holed limbs (29, 31) forming the bolt holding means; and/or
   in that the base part (25) is made from steel, in particular from annealed steel.
8. An additional lock in accordance with any one of the preceding claims, characterised in that the locking bolt (43) is biased at the base part (25) by a spring element (113) and is secured by means of a securing pin (65).
9. An additional lock in accordance with claim 8, characterised in that the locking bolt (43) has an actuation element (15) for the movement of the locking bolt into the latching position, with the actuation element (15) being secured at the locking bolt by means of the securing pin (65); and/or
   in that the locking bolt (43), the securing pin (65) and a lock holding means (29, 31) of the base part (25) are arranged such that the securing pin (65) serves as an abutment element for the securing of the locking bolt in the release position.
10. An additional lock in accordance with any one of the preceding claims, characterised in that the locking bolt (43) is designed for preinstallation at the base part (25); and/or
    in that the locking bolt (43) is made from steel, in particular from annealed steel; and/or
    in that a damping device is provided for the damping of a release movement of the locking bolt from the latching position into the release position, with the damping device preferably having a cladding at a securing pin or abutment pin or a damping element provided at the base part, at the cover part or at the locking bolt; and/or
    in that furthermore a counter piece (71) fastenable to the window or to the door is provided for the reception of the locking bolt (43) in the latching position.

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