EP2468989A2 - Lock for a door, in particular for a glass door - Google Patents

Abstract

The lock (1) has a lock housing (10) in which a follower (11) about an operation axis (12) is rotatably received. A spring element (13) is provided such that the follower is returned from rotational position about the operation axis to zero position. An adjusting unit (14) includes screw (15) which is connected to the spring element so that the spring bias of spring element is adjusted based on rotation of screw about rotational axis (16).

Description

The present invention relates to a lock for a door, in particular for a glass door, with a lock housing, in which a follower is rotatably received about an actuating axis, and wherein a spring element is provided, with which the follower in the rotational position about the actuating axis in a zero position is traceable, and wherein an adjusting unit is provided, with which the spring preload in the spring element is adjustable.

From the EP 1 049 845 B1 For example, a lock for a glass door is known, which has a lock housing in which a follower is rotatably received. Between the lock housing and an arm of the follower a tension spring is arranged biased, and the connection of the spring to the lock housing has an adjustment. The adjustment allows an adjustable Federangriffspunkt the lock housing, and the spring application point is adjustable between two positions. The adjusting unit is formed by a displaceable pin which is displaceable between two positions in a longitudinal slot in the lock bottom and in the lock cover. The orientation of the longitudinal slot extends in the direction of the arm of the follower. In this case, the longitudinal slot is designed such that the pin is held by a bayonet-type closure in one of its two end positions. If the pin is locked in the position lying closer to the pusher, the spring preload has a low value, and if the pin is locked at a greater distance from the pusher, the spring preload has a high value. As a result, two values of spring preload can be preset, and with a large preload, the force is with which the follower is pressed into the zero position, greater than at a lower spring preload. The zero position of the follower is achieved, for example, when the door handle extends in the horizontal.

Disadvantageously, only two values of the spring preloads can be adjusted, and it is desirable to steplessly adjust the spring preload between a minimum value and a maximum value. Furthermore, it is disadvantageous that a tool is required to operate the pin, which must be inserted into a slot geometry in the slot. To adjust the pin between the two positions, the tool must be placed vertically on the flat surface of the lock housing, so that either a lid member is required, which covers the pin in the longitudinal slot and the pin can only with a tool between the minimum value and the Maximum value can be adjusted when a cover element is removed from the lock housing.

It is therefore the object of the present invention to provide a lock of the aforementioned embodiment with an adjustment that is simple and easy to use.

This object is achieved starting from a lock for a door, in particular for a glass door, according to the preamble of claim 1 in conjunction with the characterizing features. Advantageous developments of the invention are specified in the dependent claims.

The invention includes the technical teaching that the adjustment has a screw which is connected to the spring element, so that upon rotation of the screw about an axis of rotation, the spring bias in the spring element is adjustable.

The invention is based on the idea that the spring bias of the spring element is adjusted by the fact that the screw is rotated about an axis of rotation, wherein the axis of rotation is formed by the longitudinal axis of the screw, and extends in the direction of the follower. The screw can be designed as a cylinder head screw or countersunk screw, and the connection between the screw and the spring element via the threaded shaft of the screw. The screw is in a fixed position, but rotatably mounted in the lock housing, and the screw element facing the end of the spring element can be moved upon rotation of the screw along the threaded shaft.

With particular advantage, the spring preload between a minimum value and a maximum value can be adjusted continuously by the inventive design of the adjustment. Consequently, the spring bias is not adjustable to only a discrete first and a discrete second value, but the spring bias can be adjusted continuously to any value between the minimum value and the maximum value. In particular, in a prolonged use of the lock, the zero position of the follower can be adjusted, and the door handle, which is included in the follower, does not automatically move back to the zero position by the spring element. To allow for the automatic return of the follower and the door handle back to the zero position when an operator releases the door handle, the screw can be adjusted until the spring preload reaches a value sufficient to automatically return the pusher and the door handle attributed the zero position. As a result, it is avoided that an unnecessarily high spring preload must be set, and it is a binding and material loading of the castle avoided.

The connection between the screw element and the spring element can be formed by a driver element into which the screw element can be screwed and on which the end of the spring element remote from the pusher nut is held. The driver element forms a rider, which has a threaded bore into which the threaded shank of the screw element is screwed. If the screw element is set in rotary motion, the tab is adjusted between the position of the minimum value of the spring preload and the position of the maximum value of the spring preload. The minimum value of the spring preload is achieved when the driver element assumes the position facing the pusher nut, and the maximum value of the spring preload is achieved when the driver element assumes the position facing away from the pusher nut. The driver element can be guided in a particular introduced in the lock housing groove, by which the adjustment of the driver element is limited to the adjustment between the minimum value and the maximum value of the spring preload. Furthermore, it is achieved by the leadership of the driver element in the groove that the driver element does not rotate with rotation of the screw.

Advantageously, the lock housing on a side wall, and the axis of rotation pierces the side wall, in particular, the axis of rotation can pierce the side wall perpendicular or at an angle. If the lock housing is arranged on the surface of a glass wing of a glass door, the side wall can extend perpendicular to the surface of the glass wing. In the side wall, an opening may be introduced, which is aligned with the axis of rotation of the screw and through which a tool for rotating the screw is passed or through which a screw head of the screw extends. If the lock housing is in a mounted arrangement on the surface of the glass wing, then the screw element can continue to rotate by means of a tool be offset to change the spring preload of the spring element without the lock must be dismantled or without a lid must be removed. The tool can be inserted through the opening in the side wall of the lock housing to insert it into the screw. The tool may be, for example, a screwdriver or a hex key. Alternatively, a screw head of the screw member may extend through the opening in the side wall or be disposed in the opening itself to insert a screwing tool into the screw head of the screw member and to twist it. With further advantage, the opening in the side wall of the lock housing can be introduced, which points downwards with respect to the installation position of the lock housing, whereby the opening in the side wall of the lock housing is not directly visible to a viewer and it prevents impurities in the Opening can occur. In addition, a plug can be provided which can serve to close the opening.

In order to arrange the screw fixed in the lock housing, a receptacle may be provided in the lock housing, which serves to receive the screw. The inclusion of the screw is carried out such that the screw is still rotatable, without that changes the position of the screw in the lock housing. For example, the receptacle may be formed in the form of a cast on the lock housing or bent out of a sheet metal material of the lock housing tab in which the screw is added.

The follower may have a spring arm on which the spring element is arranged with the end facing away from the adjustment. Thus, the spring element extends between the spring arm of the follower and the driver element of the adjustment. The spring element can be designed as a tension spring, wherein alternatively the spring element can also be designed as a compression spring. If the spring element is designed as a compression spring, the maximum value of the spring preload is achieved when the driver element is arranged in the spring arm facing position, and the minimum value of the spring preload is achieved when the driver element has a maximum distance from the spring arm of the follower. The adjustment can be configured in the same way when forming the spring element as a compression spring.

Furthermore, the follower may have a lever arm, wherein the lever arm is designed to abut against a stop element, and wherein the stop element is in particular adjustable in order to adjust the zero position of a door handle which can be received in the follower. The stop element can advantageously be designed as a set screw which is received in a screw receiving part in the lock housing. The extension direction of the lever arm and the extension direction of the adjusting screw can assume a right angle to each other, and if the abutment point between the screw and the lever arm is changed by a rotation of the screw in the screw receiving part, the zero position of the follower can also be changed. The spring element biases the follower to the operating axis of the follower in such a way that the lever arm in the zero position of the follower against the screw, in particular against the end of the threaded shank of the screw abuts. Depending on the depth of engagement of the screw in the screw receiving part of the stop point of the lever arm moves against the screw, and the zero position of the follower and thus the door handle can be adjusted.

In the lever arm, a baffle element may be introduced, against which the stop element abuts. The baffle element may comprise a material such that the material of the lever arm and consequently the material of the follower differs. For example, the impact element may be formed of a hard plastic, which is used in a receptacle in the lever arm. Thus, the advantage is achieved that in a stop of the lever arm against the stop element noise attenuation, and the formation of the baffle made of a hard plastic deformations in the surface of the baffle element are prevented, especially when the door handle snaps back by the bias of the spring element against the stop element ,

If the zero position of the door handle set, the stop element can be provided with a chemical thread lock, so that the stop element does not move automatically. Particularly in the case of all-glass doors, the visual effect occurs that in the case of a non-rectangular position of the door handle, its gelatinous appearance and the translucent counter-push-piece handle particularly stand out. The zero-position adjustability therefore makes it possible to improve the total optical image of the door arrangement. For adjusting the stop element, in particular for adjusting the adjusting screw, an opening may be provided in the lock housing, through which a tool can be inserted in order to set the adjusting screw in rotary motion and thus to change the attachment point between the adjusting screw and the lever arm.

According to a further advantageous embodiment of the lock according to the invention, the follower has a receiving opening for receiving a door handle, in which at least one clamping element is arranged, which is in a non-strained state in the mounting region of the door handle, in particular in the mounting area of a square shank of the door handle, in extends. The clamping element is resilient, and when the square shank of the door handle is inserted through the receiving opening, which may be formed in particular as a square opening in the follower, the clamping element is elastically pushed back. For example, the clamping element as a resilient Be formed sheet metal element, and the sheet metal element may be incorporated in at least one square surface of the receiving opening. Manufacturing technology is provided between the square shank of the door handle and the square opening in the pusher a slight clearance fit to add the square shaft without pressure in the square opening can. If the door handle is mounted in the follower, it is desirable for the connection between the door handle and the follower to be as free of play as possible. The inventive arrangement of a clamping element of the square shank of the door handle is pressed against a clamping element opposite the square surface in the receiving opening, which is opposite to the arrangement. In particular, two clamping elements may be formed in two mutually adjacent, rectangularly executed square surfaces, and when joining the square shank in the square opening only the force has to be overcome, which is necessary to push back the one or more clamping elements from the mounting area of the square shank. If the square shank is inserted in the square opening, the clearance between the square shank and the square opening is pushed out by the one or both clamping elements. As a result, a play-free arrangement of a door handle in a pusher is possible.

According to an advantageous development of the lock according to the invention, a lock housing cover can be provided, which can be placed on the lock housing to form a closed receiving space for receiving the lock mechanism, in particular for receiving the follower. Advantageously, two through holes can be provided laterally to the actuation axis, which extend through the lock housing and through the lock housing cover, and through the through holes fasteners can be passed to arrange handle fittings on the lock housing or on the lock housing cover. This is in a castle that is designed as a lock for a glass door, a screw connection of handle fittings allows. The through holes may be symmetrical to the actuation axis in the lock housing and in the lock housing cover, wherein the through holes in the lock housing are aligned with the through holes in the lock housing cover. With respect to the installation position of the lock, the through holes can be arranged horizontally and laterally to the follower to accommodate standard handle fittings can. Alternatively, the through holes may be arranged diagonally, and the arrangement of the through holes may be adapted to the standard of the handle fittings. Consequently, horizontally oval shaped through holes can be provided to continue to use standard fittings with different stitch sizes or with different offset dimensions can continue. To accommodate clamping forces during assembly of the lock, the reveal of the through holes may be formed as a support sleeve. As a standard, pusher rosettes with DIN fixing stitches of 38mm can be used. In normal locks rosette and counter rosette are bolted together, but this was not possible for locks for glass doors so far. Due to the inventive design of the through holes in the lock housing or in the lock housing cover of a lock for a glass door consequently DIN handle rosettes can be placed and bolted together through the door leaf.

The lock may comprise a latch which is movable by rotation of the follower about the actuating axis between a protruding from the lock housing and a retracted into the lock housing position, wherein the lock latch is mounted by means of a mounting screw on a latch shaft, so that the lock latch in two 180th ° rotated positions on the latch shaft is mounted. Advantageously, the latch may comprise at least one strip-shaped plastic web, wherein the latch may in particular have two lateral plastic webs, so that at least the one and preferably both plastic webs the contact body for contact of the latch with a locking counterpart, for example with a strike plate forms. In addition, the latch may comprise plastic webs which extend over the latch in the direction of the latch shaft to form the contact of the latch to the guide in the latch housing through the plastic webs. Furthermore, the lock housing and / or the lock housing cover may comprise latch guide elements, wherein the latch guide elements are preferably designed as plastic damping elements embedded in the lock housing and / or in the lock housing cover, which form the contact body between the lock latch and the lock housing and / or the lock housing cover.

If the latch can be mounted on the latch shaft in two positions rotated 180 ° relative to one another, the lock can be used for both right and left-closing doors. In particular, all-glass doors are particularly noise sensitive due to the low internal damping of the door leaf. Therefore, it is desirable to eliminate all sources of noise, so that a damped arrangement of the latch in the lock housing forms a simple, effective damping. If the lock catch has plastic webs which form the contact bodies for contact with the locking counterpart, a further damping of the lock catch can be achieved. A significant noise factor is the impact sound of the latch on the counterpart counterpart, whereby a sliding movement is initiated in the latch. Due to the damping by means of the plastic webs both the contact with the latch to the lock counterpart and the contact of the latch in the lock housing is damped.

The lock housing has latch guide elements, which are preferably designed as embedded in the lock housing plastic damping elements, the contact body between the lock latch and form the lock housing. The latch guide elements may be formed of wear-resistant plastic and have a circular cross-section. Thus, the case guide elements can be placed on the housing side in blind holes and held in a form-fitting manner from the mounted lock housing cover. The latch guide elements can be dimensionally designed and positioned so that a clearance fit between the latch and the lock housing arises in the mounted state. In particular, upon impact of the latch bolt on the locking counterpart creates a slight tilting movement of the latch to the game between the latch and the latch guide. The latch strikes against the lock housing and generates an additional noise, which is damped by the plastic webs according to the invention both on the lock latch and by the latch guide elements in the lock housing or in the lock housing cover.

Figur 1a

ein erstes Ausführungsbeispiel eines Schlosses mit einer Verstelleinheit in einer ersten Verstellposition,

Figur 1b

das Ausführungsbeispiel des Schlosses gemäß Figur 1 a mit einer Verstelleinheit in einer zweiten Verstellposition,

Figur 2a

ein weiteres Ausführungsbeispiel eines Schlosses mit einer Verstelleinheit in einer ersten Verstellposition,

Figur 2b

das Ausführungsbeispiel des Schlosses gemäß Figur 2a mit einer Verstelleinheit in einer zweiten Verstellposition,

Figur 3a

ein Ausführungsbeispiel eines Schlosses mit einer Drückernuss und einem Anschlagelement in einer ersten Anschlagposition,

Figur 3b

das Ausführungsbeispiel des Schlosses gemäß Figur 3a mit einem Anschlagelement in einer zweiten Anschlagposition,

Figur 4

eine perspektivische Ansicht eines Ausführungsbeispiels einer Drückernuss mit den Merkmalen der vorliegenden Erfindung,

Figur 5a

eine weitere Ansicht der Drückernuss gemäß Figur 4,

Figur 5b

eine weitere Ansicht der Drückernuss gemäß den Figuren 4 und 5a,

Figur 6a-6d

eine Schlossfalle mit erfindungsgemäß eingebrachten Kunststoffstegen in verschiedenen Ansichten und

Figur 7

ein Ausführungsbeispiel eines Schlossgehäuses für ein Schloss gemäß der vorliegenden Erfindung.

Further, measures improving the invention will be described in more detail below together with the description of a preferred embodiment of the invention with reference to FIGS. It shows:

FIG. 1a

A first embodiment of a lock with an adjustment in a first adjustment position,

FIG. 1b

the embodiment of the castle according to FIG. 1 a with an adjustment unit in a second adjustment position,

FIG. 2a

Another embodiment of a lock with an adjustment in a first adjustment position,

FIG. 2b

the embodiment of the castle according to FIG. 2a with an adjustment unit in a second adjustment position,

FIG. 3a

An embodiment of a lock with a follower and a stop element in a first stop position,

FIG. 3b

the embodiment of the castle according to FIG. 3a with a stop element in a second stop position,

FIG. 4

a perspective view of an embodiment of a follower with the features of the present invention,

FIG. 5a

another view of the handle according to FIG. 4 .

FIG. 5b

another view of the handle according to the Figures 4 and 5a .

Figure 6a-6d

a latch with inventively introduced plastic webs in different views and

FIG. 7

an embodiment of a lock housing for a lock according to the present invention.

In the FIGS. 1a and 1b a lock 1 is shown with an open lock housing 10. In the lock housing 10, a follower 11 is rotatably received about an actuating axis 12. At the pusher 11, a spring element 13 is arranged, which is designed as a tension spring and which biases the pusher 11 about the actuating axis 12 rotationally. The connection of the spring element 13 to the lock housing 10 comprises an adjustment unit 14. With the adjustment unit 14, the spring preload in the spring element 13 can be changed. The pusher 11 is shown in the zero position, so that a recorded in the pusher 11 door handle occupies a horizontal position.

According to the invention, the adjusting unit 14 has a screw element 15, which is connected to the spring element 13, so that upon rotation of the screw element 15 about the axis of rotation 16, the spring bias in the spring element 13 is adjustable. The connection between the screw 15 and the spring element 13 comprises a driver element 17, in which the screw 15 is screwed. About the receptacle 21, the screw 15 is fixedly received in the lock housing 10, wherein the recording of the screw 15 in the receptacle 21 allows the rotational movement of the screw 15 about the rotation axis 16. Thus, the driver element 17 can be moved in the manner of a rider along the threaded shank of the screw 15, and the spring preload in the spring element 13 is continuously adjustable.

The lock 1 is designed for use on a glass door and can be fitted with a housing bottom 36 on the surface of the all-glass door. The lock housing 10 is bounded laterally by a side wall 18, and in the side wall 18, an opening 19 is introduced. The opening 19 is inserted in a position in the side wall 18, in which the axis of rotation 16 extends approximately centrally through the opening 19 therethrough. Consequently, the screw 15 can be rotated with a tool about the axis of rotation 16, so that the adjustment of the spring bias is made possible by means of the adjusting unit 14 without opening the lock housing 10.

By the spring element 13, the follower 11 is biased about the actuating axis 12, and the follower 11 serves to receive a door handle. If the door handle is actuated, a latch 31 can be pulled back into the lock housing 10. The latch 31 is attached by means of a mounting screw 32 to a latch shaft 33, and the operative connection between the latch shaft 33 and the follower 11 is formed by a slide 37.

The axis of rotation 16 of the screw 15 is tapered to the side wall 18 of the lock housing 10 at an angle. The angle is determined such that a tool can be inserted through the opening 19 in order to be able to rotate the screw element 15 with the tool. At the same time, the tapered arrangement of the axis of rotation 16 forms an adjustment of the driver 17, through which the driver 17 is adjustable at a distance from the follower 11, so that the spring bias of the spring element 13 can be changed accordingly. For example, the angle of the rotation axis 16 to the side wall 18 of the lock housing 10 is dimensioned at about 45 °. Laterally to the receiving hole 42 for receiving the follower 11 through holes 30 are inserted into the lock housing 10, which extend through the lock housing 10 and through a lock housing cover, not shown, and through the through holes 30 fasteners can be passed to handle fittings on the lock housing 10 and to arrange on the lock housing cover. This allows a screw connection of handle fittings on the lock housing 1. The through holes 30 are inserted symmetrically to the actuating axis in the lock housing and in the lock housing cover, wherein the through holes in the lock housing are aligned with the through holes in the lock housing cover. With respect to the installation position of the lock 1, the through holes 30 may be arranged horizontally to accommodate standard pusher fittings.

In the FIGS. 2a and 2b a further embodiment of a lock 1 is shown, which is designed to be arranged on a glass door. The lock housing 10 is shown with a lock housing cover 10a, which is broken in the region of the arrangement of the adjustment unit 14. The adjusting unit 14 has a screw element 15 which extends along an axis of rotation 16, wherein the axis of rotation 16 to the side wall 18 of the lock housing 10 assumes a right angle. The Screw 15 has a screw head 20 which is seated in the opening in the lock housing 10, and approximately closes with the outside of the side wall 18. The pusher 11 is disposed on the side facing away from the latch 31 of the lock 1, and the bias of the spring element 13 on the pusher 11 can be done by adjusting the driver 17 in the same manner by means of the adjustment 14, as already stated in the first embodiment.

The FIGS. 3a and 3b show a further developed embodiment of the lock 1 with a pusher 11, which is rotatably received in the lock housing 10. The lock housing 10 is shown with a lock housing cover 10a, and the follower 11 has a lever arm 23 which serves to abut a stop element 24, wherein the stop element 24 is formed in the form of a set screw 24. The adjusting screw 24 is screwed into a screw receiving part 25 and extends approximately at right angles to the extension direction of the lever arm 23. If the screw 24 is further screwed into the screw receiving part 25, the stop of the follower 11 is adjusted clockwise, and the adjusting screw 24 from the screw receiving part 25th unscrewed, the stop of the follower 11 is adjusted counterclockwise. In order to avoid that the adjusting screw 24 is unscrewed too far out of the screw receiving part 25, a limiting element 38 is mounted on the lock housing cover 10a, against which the head of the adjusting screw 24 can strike. In order to set the adjusting screw 24 in rotational movement, a further opening 39 is introduced in the lock housing 10, through which a tool for rotating the adjusting screw 24 can be introduced. The screw receiving part 25 is arranged in the lock housing 10, and for mounting the adjusting screw 24 can be screwed into the screw receiving part 25, while the lock housing cover 10 a is not yet mounted. If the adjusting screw 24 is screwed into the screw receiving part 25, then the lock housing cover 10a are mounted, and the limiting element 38 limits a Ausschraubbewegung the screw 24 from the screw receiving part 25th

The Figures 4, 5a and 5b illustrate the pusher 11 in a perspective view and in two side views. The pusher 11 has a receiving opening 26 which is formed as a square opening. Furthermore, the follower 11 comprises a spring arm 22, and the spring element 13 can be attached to the spring arm 22 via a connecting element 40. On the spring arm 22 approximately opposite side has the follower 11 has a lever arm 23 which is formed to abut against the stop element 24. In order to create a noise-damping, low-wear surface for abutment of the lever arm 23 against the stop element 24, a baffle element 28 made of a wear-resistant plastic material is used in the lever arm 23.

The receiving opening 26 has four square surfaces 29, and in a square surface 29, a clamping element 27 is inserted in the form of a resilient sheet metal element. The clamping element 27 has a bulge 41, which extends into the mounting region of a square shank of a door handle, which has to be inserted into the receiving opening 26. Due to the resilient design of the clamping element, the bulge 41 is pushed back in the direction of the square surface 29, and there is a clamping arrangement of the square shank in the square opening, which allows a backlash-free connection of the door handle with the pusher.

The FIGS. 6a to 6d show a latch 31 of a lock, which is designed for a glass door. The latch 31 has two strip-shaped plastic webs 34 which protrude from the main body of the latch 31. Thus, the plastic webs 34 form the contact body for contact of the lock latch 31 with a locking counterpart, for example with a strike plate. The plastic webs 34 can according to the illustrations in FIGS. 6a and 6b be arranged on the side edges of the latch 31 in the form of strip-shaped bands, or the plastic webs 34 are according to the embodiments in the FIGS. 6c and 6d formed as plastic caps, which are attached to the side of the latch 31.

FIG. 7 shows a further view of a lock housing 10 of a lock 1, and in the region of the trap guide has the lock housing 10 latch guide elements 35 which are formed as plastic elements and are used in the lock housing 10. If the lock latch 31 is mounted in the lock housing 10, then the latch guide elements 35 form the contact bodies between the lock latch 31 and the lock housing 10 or the lock housing cover 10a. The trapezoidal guide elements 35 shown with a circular cross-section can form elastic plastic elements, which allow a guidance of the lock latch 31 in the lateral direction. The strip-shaped trap guide elements 35 may be embedded as a flat formed plastic strip in the housing and create a top and bottom guide the latch 31.

The invention is not limited in its execution to the above-mentioned preferred embodiments. Rather, a number of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of use. Any features and / or advantages resulting from the claims, the description or the drawings, including constructive details or spatial arrangements, can be essential to the invention, both individually and in the most diverse combinations.

LIST OF REFERENCE NUMBERS

1

lock

10

lock housing

10a

Castle cover

11

follower

12

operating axis

13

spring element

14

adjustment

15

screw

16

axis of rotation

17

dogging

18

Side wall

19

opening

20

screw head

21

admission

22

spring arm

23

lever arm

24

Stop element, set screw

25

Screw-receiving part

26

receiving opening

27

clamping element

28

baffle

29

Square area

30

Through Hole

31

latch

32

Mounting screw

33

latch shaft

34

Plastic web

35

Keep guide element

36

caseback

37

pusher

38

limiting element

39

opening

40

connecting element

41

bulge

42

receiving hole

Claims (19)

Lock (1) for a door, in particular for a glass door, with a lock housing (10) in which a pusher nut (11) is rotatably received about an actuating axis (12), and wherein a spring element (13) is provided with which The follower (11) in the rotational position about the actuating axis (12) is traceable to a zero position, and wherein an adjusting unit (14) is provided with which the spring bias in the spring element (13) is adjustable, characterized in that the adjusting unit (14) a screw element (15), which is connected to the spring element (13), so that upon rotation of the screw element (15) about an axis of rotation (16), the spring bias in the spring element (13) is adjustable. Lock (1) according to claim 1, characterized in that the spring preload is infinitely adjustable between a minimum value and a maximum value. Lock (1) according to claim 1 or 2, characterized in that the connection between the screw element (15) and the spring element (13) has a driver element (17) into which the screw element (15) can be screwed and on which the follower (11) facing away from the end of the spring element (13) is arranged holding. Lock (1) according to one of claims 1 to 3, characterized in that the driver element (17) is guided in a particular in the lock housing (10) introduced groove through which preferably the adjustment of the driver element (17) on the Adjustment path between the minimum value and the maximum value of the spring preload is limited. Lock (1) according to one of the preceding claims, characterized in that the lock housing (10) has a side wall (18), and the axis of rotation (16) pierces the side wall (18), in particular pierces the axis of rotation (16) the side wall (18 ) perpendicular or at an angle less than 90 °. Lock (1) according to claim 5, characterized in that the lock housing (10) is designed for placement on the surface of a glass wing of a glass door, wherein the side wall (18) extends perpendicular to the surface of the glass wing. Lock (1) according to claim 5 or 6, characterized in that in the side wall (18) has an opening (19) is introduced, which is aligned with the axis of rotation (16) of the screw element (15) and through which a tool for rotating the screw (15) is passable or through which a screw head (20) of the screw member (15) extends therethrough. Lock (1) according to one of the preceding claims, characterized in that the screw element (15) is received on a housing (10) arranged on the housing (21). Lock (1) according to one of the preceding claims, characterized in that the pusher nut (11) has a spring arm (22) on which the spring element (13) with the adjusting unit (14) facing away from the end is arranged. Lock (1) according to one of the preceding claims, characterized in that the pusher nut (11) has a lever arm (23), wherein the lever arm (23) is designed for abutment with a stop element (24), wherein the stop element (24) is adjustable, in particular, in order to adjust the zero position of a door handle which can be received in the pusher nut (11). Lock (1) according to claim 10, characterized in that the stop element (24) is designed as a set screw (24), which is preferably received in a screw receiving part (25) in the lock housing (10). Lock (1) according to claim 10 or 11, characterized in that in the lever arm (23) an impact element (28) is introduced, against which the stop element (24) abuts. Lock (1) according to one of the preceding claims, characterized in that the pusher nut (11) has a receiving opening (26) for receiving a door handle, wherein in the receiving opening at least one clamping element (27) is arranged, which is in a non-strained state in the mounting region of the door handle, in particular in the mounting region of a square shank of the door handle, extends into it. Lock (1) according to one of the preceding claims, characterized in that the receiving opening (26) forms a square opening in the handle nut (11), wherein the clamping element (27) is designed as a resilient sheet metal element in at least one square surface (29) of Receiving opening (26) is introduced. Lock (1) according to one of the preceding claims, characterized in that a lock housing cover (10a) is provided which can be placed on the lock housing (10), wherein preferably laterally to the actuation axis (12) has two through holes (30) are provided, which extend through the lock housing (10) and through the lock housing cover (10a) through which fastening elements can be passed through the through holes (30) to arrange handle fittings on the lock housing (10) or on the lock housing cover (10a). Lock (1) according to one of the preceding claims, characterized in that the lock (1) has a latch (31), which by rotation of the follower (11) about the actuation axis (12) between a protruding from the lock housing (10) and a latched in the lock housing (10) position is movable, wherein the lock latch (31) by means of a mounting screw (32) on a latch shaft (33) can be mounted, so that the latch (31) in two 180 ° rotated to each other positions on the latch shaft (33 ) is mountable. Lock (1) according to claim 16, characterized in that the latch (31) has at least one strip-shaped plastic web (34), in particular that the latch (31) has two lateral plastic webs (34), wherein the at least one plastic web (34) Contact body for contact of the lock latch (31) forms with a locking counterpart. Lock (1) according to Claim 16 or 17, characterized in that the plastic webs (34) extend over the latch (31) in the direction of the latch shaft (33) in order to prevent contact of the latch (31) with the guide in the latch housing (10 ) through the plastic webs (34) to form. Lock (1) according to claim 16 to 18, characterized in that the lock housing (10) and / or the lock housing cover (10a) has latch guide elements (35), wherein the latch guide elements (35) are preferably formed as in the lock housing (10) and / or in the lock housing cover (10a) embedded plastic damping elements which form the contact body between the latch (31) and the lock housing (10) and / or the lock housing cover (10a).

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