EP1878860B1

EP1878860B1 - Door or window lock

Info

Publication number: EP1878860B1
Application number: EP07075584A
Authority: EP
Inventors: Remi Emiel Van Parys
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-07-14
Filing date: 2007-07-11
Publication date: 2011-04-20
Anticipated expiration: 2027-07-11
Also published as: PT1878860E; BE1017226A3; ES2365172T3; DE602007013975D1; PL1878860T3; ATE506510T1; EP1878860A1

Abstract

Door or window lock which mainly consists of a lock case (2) in which has been provided a movable dead bolt (9, 51) between a position in which a body (10) of the dead bolt (9, 51) is situated entirely or almost entirely in the lock case (2) and a position of rest in which this body (10) is situated largely outside the lock case (2) and whereby a stop is provided in the lock case (2) which restricts the movement of the dead bolt (9, 51) outside the lock case (2), characterised in that the dead bolt (9, 51) is fixed in the lock case (2) in a rotatable or detachable manner and in that the above-mentioned stop is variable, such that the body (10) of the dead bolt (9, 51) can be moved entirely outside the lock case (2) without opening the lock case (2).

Description

The present invention concerns a door or window lock.
Locks consisting of a lock case in which has been provided a lock latch which is partly pushed through an opening in the lock case by means of a spring are already known. The lock latch mainly consists of a wedge-shaped body with a pen on it that is fixed in a holder.
The lock also comprises means which make it possible to draw back the lock latch, against the force of the above-mentioned spring, in the lock case. These means usually consist of what is called a crank handle working in conjunction with the pin of a door handle.
The crank handle comprises two stops, the first one of which can work in conjunction with a side wall of the lock case, such that the crank handle is stopped from rotating in one direction past a certain position.
The second stop works in conjunction with a spring or the like which is pushed against the stop, such that the crank handle, after the handle has been manipulated, automatically returns to a position in which the first stop is pushed against a wall of the lock case.
The crank handle further works in conjunction with what is called a fingerplate which is provided in a rotating manner in the lock case, preferably coaxially to the crank handle.
This fingerplate is provided with a finger working in conjunction with the holder so as to move the latter between a position of rest in which the lock latch is situated partly outside the lock case and a position in which the lock latch is drawn back in the lock case. Further, the fingerplate comprises a stop working in conjunction with a protrusion in the lock case, whereby the rotation of the fingerplate is restricted in a sense corresponding to the outward movement of the holder from the lock latch. The above-mentioned restriction of the fingerplate aims to make sure that the lock latch protrudes only up to a certain distance from the lock case, so that the operation of the lock latch is guaranteed.
It is clear that replacing the holder and the lock latch is a relatively laborious and time-consuming operation, since the lock case must be taken out of the door and must be subsequently opened and dismounted.
In order to remedy the above-mentioned disadvantages, it is known to provide the shaft of the lock latch in a rotating manner in the holder.
The lock latch is hereby prevented from rotating in the holder, when the lock is mounted, as the lock latch can only partly protrude through a corresponding opening in the lock case, as a result of which the wedge-shaped body of the lock latch always remains partly held between the edges of the opening in the lock case. Such a restriction of the distance over which the lock latch protrudes from the lock case is important, since it guarantees the good working of the lock latch when the door is closed. Moreover, the body could break off from the lock latch where it is fixed to the shaft when the entire lock latch is situated outside the lock case.
A disadvantage of these known locks is that the lock latch cannot be easily replaced by another lock latch or for example by what is called a rolling dead bolt.
Document DE 382 811 discloses a door or window lock according to the preamble of claim 1, whereby a variable stop works in conjunction with a spring in order to allow the body of a bolt to be moved entirely outside the lock case without opening it.
The present invention aims to remedy one or several of the above-mentioned and other disadvantages and in particular to provide an alternative arrangement of a variable stop.
To this end, the invention concerns a door or window lock according to claim 1.
An advantage of the present invention is that the orientation of the dead bolt can be altered quickly and easily, such that a lock according to the invention can be transformed from a lock for a left-hand door into a lock for a left-hand hung door without opening the lock case.
The shaft of the lock latch or dead bolt is preferably fixed in the holder in a detachable manner by means of for example a bayonet catch.
An advantage of this preferred embodiment is that the lock latch or dead bolt of the lock can be replaced or changed. Thus, it is for example possible to replace a lock latch by a rolling dead bolt or vice versa. Replacing or changing the lock latch or dead bolt makes it possible to use locks according to the invention for different types of doors and to re-use them without having to dismantle the lock.
It is clear that the above-mentioned advantages of a lock according to the invention may lead to considerable cost savings, since a single lock can be used for different types of doors, as a result of which for example lock smiths may have a large offer with a relatively small stock.
In order to better explain the characteristics of the present invention, the following preferred embodiment of a lock according to the invention is given as an example only without being limitative in any way, with reference to the accompanying drawings, in which:

figure 1 shows a lock according to the invention in perspective and with a partial omission;
figure 2 represents the part indicated by F2 in figure 1 to a larger scale;
figure 3 represents the same view as in figure 2, but for another position;
figure 4 represents a part of the lock according to arrow F4 in figure 1;
figure 5 represents a disassembled view of the part in figure 4;
figure 6 represents the view according to arrow F6 in figure 2 to a larger scale;
figures 7 and 8 represent the same view as in figure 6, but for other positions of the lock;
figure 9 represents a view of a few parts according to arrow F9 in figure 8;
figure 10 represents a view according to arrow F10 in figure 9;
figures 11 and 12 each represent a variant of figure 1;
figure 13 represents a part that is applied in a lock according to figures 11 and 12 to a larger scale;
figure 14 represents a variant of figure 3.

Figures 1 and 2 represent a lock 1 according to the invention with a housing or a lock case 2 which mainly consists of a back 3 with standing side edges 4 and a lid which is not represented in the figures and which can be screwed on the side edges 4.
A lath 5 is provided against one of the side edges by means of screws or the like, whereby a hole 6 is in this case provided through this lath 5 and the side edge concerned.
Further, a passage 7 is provided crosswise to the back 3 and the lid, through the lock case 2, which passage 7 is only represented in figures 7 to 9.
On the back 3 of the lock case 2 is provided a guide 8 extending crosswise to the plane of the above-mentioned lath 5.
In the lock case 2 is in this case provided what is called a lock latch 9, which is represented in greater detail in figures 4 and 5.
The lock latch 9 mainly consists of a wedge-shaped body 10 which is bevelled on one side and on which is diagonally provided a shaft 11.
The shaft 11 is provided with at least one and in this case two crosswise protrusions 12 according to the invention.
These protrusions 12 are placed diametrically in relation to each other and the sides 13 of these protrusions that are turned towards the wedge-shaped body 10 are preferably convex.
The shaft 11 of the lock latch 9 is provided in a holder 14 which in this case consists of a mainly U-shaped body which can shift in the above-mentioned guide 8 in the back 3 of the lock case 2.
The U-shaped body has a back 15 in which, parallel to the legs 17, is provided a recess 16 in the shape of a semi-cylinder in which the above-mentioned shaft 11 of the lock latch 9 has been placed.
The legs 17 of the U-shaped body have two facing collars 18 on their free ends, behind which the protrusions 12 can mesh on the shaft 11 of the lock latch 9, as a result of which the lock latch 9 can be fixed in the holder 14 with what is called a bayonet catch.
On the side of the back 15 that is turned away from the legs 17, the U-shaped body is provided with a seating 19 in which has been provided a spring 20 which is clamped between the holder 14 and a side edge 4 of the lock case 2. This spring 20 preferably extends in the same direction as the shaft 11 extends from the lock latch 9.
Finally, and as represented in figures 6 to 8, a recess 21 is provided in the holder 14 which can work in conjunction with means that make it possible to move the lock latch 9 from an extended position of rest, in which the wedge-shaped body 10 partly protrudes out of the lock case 2, into a withdrawn position in which the lock latch 9 is situated entirely or practically entirely in the lock case 2.
These means in this case comprise a crank handle 22 and a fingerplate 23 which are both provided coaxially in relation to the above-mentioned passage 7 in the lock case 2.
The crank handle 22 is a mainly cylindrical body in which is provided a square central opening 24. On the jacket 25 of the crank handle 22 is provided a protruding part 26 that can work in conjunction with the side wall 4 of the lock case 2 through which the lock latch 9 extends. On the side of this protruding part 26 which is directed towards the fingerplate 23 is provided a protrusion 27.
A stop 28 is provided practically diametrically to the protruding part 26 on the jacket 25 of the crank handle 22.
The fingerplate 23 in this case consists of a plate-shaped element with a circular recess 29 through which the crank handle 22 has been provided. A second recess 30 is provided in the fingerplate 23 along a section of an imaginary circle round the shaft 31 of the circular recess 29.
As is represented in figure 9, the fingerplate 23 has a bend 32 between both above-mentioned recesses 29 and 30 that can work in conjunction with the protrusion 27 of the crank handle 22.
On the opposite side of the second recess 30 is provided a finger 33 working in conjunction with the above-mentioned recess 21 in the holder 14 of the lock latch 9.
Further, the fingerplate 23 comprises a stop-forming protrusion 34 situated near the circular recess 29.
Finally, the above-mentioned means comprise a spring 35 and a pen 36, working in conjunction with the above-mentioned stop 28 of the crank handle 22 to move the lock latch 9.
The pen 36 is provided with a cylindrically bevelled side 37 on one of its far ends that is complementary to the jacket 25 of the crank handle 22, whereas a seating 38 is provided on the other far end of the pen for the above-mentioned spring 35.
In this case, the spring 35 and the pen 36 are provided on a lath 39 which is provided with a standing collar 40 on one far end against which the basis of the spring 35 rests.
According to the invention and as represented in figures 6 to 8, the above-mentioned lath 39 can be axially moved in the lock case 2, whereby one of the side walls 4 of the lock case 2 forms a stop for this lath 39.
Also according to the invention and as represented in greater detail in figures 9 and 10, the lath 39, in its side turned to the back 3 of the lock case 2, is provided with a notch 41 near the free end of the lath 39, and in which the above-mentioned stop-forming protrusion 34 of the fingerplate 23 is situated.
The working of the lock 1 according to the invention is simple and as follows.
In order to operate the lock 1, it is known to provide it with a crank, not represented in the figures, whose pin 31 is provided in the above-mentioned central opening 24 of the crank handle 22.
Figures 6 to 8 represent different positions of the lock 1, starting with a position of rest in figure 6, whereby the lock latch 9 partly protrudes from the lock case 2.
In this position of rest, the crank handle 22 is pushed with its protruding part 26 against a wall 4 of the lock case 2 by the spring 35, whereas a force is exerted on the holder 14 of the lock latch 9 by the spring 20, such that the wedge-shaped body 10 is situated partly outside the lock case 2.
The lock latch 9 is maintained in this position by means of the fingerplate 23, whose stop-forming protrusion 34 is situated in the above-mentioned notch 41 of the lath 39, such that a counterclockwise rotation Dl of the fingerplate 23 is prevented.
An axial shift of the lath 39 is hereby opposed by the above-mentioned spring 35 which is clamped between the stop 28 of the crank handle 22 and the standing collar 40 of the lath 39.
As a result, the finger 33 of the fingerplate 23 prevents a further movement of the lock latch 9 further outside the lock case 2.
In order to move the lock latch 9 into the lock case 2 in a sense according to arrow P1, the crank handle 22 must be turned in a clockwise sense D2 against the force of the spring 35.
When the crank handle 22 is turned, the aforesaid protrusion 27 on the crank handle 22 will move into the bend 32 in the fingerplate 23 and it will take the fingerplate 23 along in the rotational movement according to D2.
The rotation of the fingerplate 23 results in a movement of the finger 33, as a result of which the holder 14 of the lock latch 9 is moved, against the force of the spring 20, in a sense according to arrow P1, and the lock latch 9 is thus drawn back in the lock case 2.
When the force on the crank handle 22 falls away, the latter will be pushed back into its position of rest, under the influence of the spring 35, after which the pressure on the fingerplate 23 falls away and as a result of which the spring 20 will push the lock latch 9 partly out of the lock case 2 again into the position of rest.
In order to be able to rotate or replace the lock latch 9 according to the invention, one has to manually pull the lock latch 9 out of the lock case 2, as is represented in figure 8.
Pulling the lock latch 9 out is made possible as the fingerplate 23, when it is rotated in a counterclockwise direction D1, works in conjunction with a movable stop, which is in this case formed of a side wall of the above-mentioned notch 41 in the lath 39.
Indeed, as the lock latch 9 is pulled out of the lock case 2, also the holder 14 of the lock latch is moved, as a result of which the finger 33 of the fingerplate 23 is moved in the same direction.
Moving the finger 33 results in a rotation of the fingerplate 23 in a counterclockwise direction Dl, whereby the stop-forming protrusion 34 of the fingerplate 23 exerts a force on the lath 39 in the direction of the arrow P2.
As the spring 35 is provided between the crank handle 22, whose further rotation in a counterclockwise direction Dl is prevented by the protruding part 26, and the above-mentioned standing collar 40 of the lath 39, a movement of the lath 39 will result in a compresssion of the spring 35.
When the wedge-shaped body 10 of the lock latch 9 is situated entirely outside the lock case 2, and thus no longer between the edges of the hole 6 in the lock case 2 and the above-mentioned lath 5, the lock latch 9 can be rotated around its shaft 11.
As is represented in figure 5, it is clear that when the lock latch 9 is rotated over an angle of, in this case 90°, it can be removed from the holder 14.
When the lock latch 9 is rotated over - in this case - 90°, the transmission of the tensile force on the lock latch 9 to the holder 14 falls away, as the protrusions 12 on the shaft 11 of the lock latch 9 are no longer situated behind the collars 18 on the legs 17 of the holder 14.
When the tensile force falls away, this has for a result that the spring 35 pushes the lath 39 again in its position of rest, as a result of which also the fingerplate 23 and the holder 14 are put back in their position of rest.
In order to put the lock latch 9 in the lock 1 again, one only has to put the shaft 11 through the hole 6 into the recess 16 in the holder 14. The lock latch 9 must hereby be oriented such that the protrusions 12 on the shaft 11 can be guided between the legs 17 of the holder 14. This implies in this case that the wedge-shaped body 10 of the lock latch 9 is directed transversally to the hole 6 in the lath 5.
When the wedge-shaped body 10 is placed against the lath 5, the lock latch 9 can be rotated in a desired direction over an angle of - in this case - 90°, such that the conical side walls 13 of the protrusions 12 mesh behind the collars 18 on the legs 17 of the holder 14.
The rotation of the lock latch 9 thus results in that the holder 14 is drawn towards the hole 6 according to the same principle as described above when the lock latch 9 is removed from the lock case 2.
As soon as the wedge-shaped body 10 of the lock latch 9 has rotated in a desired orientation for the hole 6 in the lath 5, one only has to release the lock latch 9 to bring it back in its position of rest with the help of the spring 35.
It is clear that according to the above-described operation, the lock 1 according to the invention can be transformed in a fast and simple manner from a lock for a left-hand door to a lock for a left-hand hung door without having to open the lock case 2, let alone dismount this lock case 2.
Further, it is clear that the means for removing the lock latch 9 from the lock case 2 can be made according to several variants.
Indeed, the core of the present invention consists in providing a variable stop for the holder 14 in an axial direction of the shaft 11 of the lock latch 9, in a direction of movement P1 from the lock latch 9 to outside the lock case 2.
This variable stop must be accessible from outside the lock case 2 and preferably even from a part of the lock 1 which is freely accessible when the lock has been worked in in a door.
In the present invention, the variable stop is mainly formed by making the spring 35 work in conjunction with the above-mentioned shifting lath 39 which in turn works in conjunction with the fingerplate 23, such that the accompanying finger 33 can be rotated in a sense of rotation Dl past a position of rest in which the lock latch 9 is situated when the crank of the door is not operated.
Figure 11 represents a variant in which the lock 1 according to the invention also comprises a night latch 42, apart from the lock latch 9, as well as means that make it possible to operate the night latch 42 and the lock latch 9 together.
In this case, these means consist of a crown gear wheel 43 working in conjunction with a cylinder 44 in a known manner.
The toothing of the crown gear wheel 43 in this case works in conjunction with two planetary gears 45 that are each composed of two gear wheels fixed coaxially together, whereby a first gear wheel works in conjunction with the crown gear wheel 43 and the second gear wheel works in conjunction with the toothing of a main gear wheel 46.
The main gear wheel 46 is composed of two gear wheels 47 and 48 that are coaxially fixed together, whereby the gear wheel 47 with the largest diameter in this case works in conjunction wit the above-mentioned planetary gears 45, whereas the other gear wheel 48 works in conjunction with a tooth lath 49.
The tooth lath 49 is provided with one transversal journal which is not represented in the figures and which makes it possible to drive the night latch 42 and the above-mentioned fingerplate 23 while rotating.
The working and construction of such a tooth lath 49 and night latch 42 are generally known in the field of locks and they are not further explained in detail here.
It should be noted that, as represented in figure 13, the fingerplate 23 must be provided with a catch 50 in this case which can work in conjunction with a transversal journal on the tooth lath 49, so as to be able to operate the lock latch 9 by means of the tooth lath 49, and thus by means of a key.
It is clear that the operation of the lock latch 9 and the night latch 42 by means of the cylinder 44 has no influence whatsoever on the possibility to remove the lock latch 9 entirely out of the lock case 2, since the additional catch 50 on the fingerplate 23 does not influence the rotation of the fingerplate in a sense of rotation Dl, in which the fingerplate 23 is rotated when the lock latch 9 is removed.
Consequently, it is possible to apply the present invention also to locks with a day and a night latch.
Moreover, the tooth lath 49 is not moved when the lock latch 9 is removed from the lock case 2, such that the invention can also be applied to doors in which the above-mentioned tooth lath 49 is driven by a motor, as is customary for automatic doors.
Also to what are called multipoint locks, in which the above-mentioned tooth lath 49 is applied to operate the day and night latch of a main lock and in which it works in conjunction with similar laths in other partial locks, the present invention can be applied without any additional adjustments.
Figure 12 represents another variant in which the lock latch 9 has been illustratively replaced by what is called a rolling dead bolt 51.
This rolling dead bolt consists of the above-mentioned shaft 11 on which has been provided a body which is in this case U-shaped, whereby a roller has been fixed in a freely rotating manner between the legs of the body.
Since a spring 20 is usually applied in rolling dead bolts 51 having a larger compressive force than in the case of lock latches 9, a seating 52 is preferably provided on the shaft 11 of the rolling dead bolt 51 for an additional spring 53 that is placed coaxially in the spring 20 when the rolling dead bolt 51 is provided in the lock according to the invention. As a result, the compressive force exerted on the rolling dead bolt 51 will be increased.
Providing said additional spring 53 on a seating on the shaft 11 of the rolling dead bolt 51 makes it possible to replace a lock latch 9 by a rolling dead bolt 51 and vice versa without having to open or dismount the lock 1, whereas the force with which the dead bolt is pushed outward can be adjusted in conformity with the wishes of the user.
Finally, figure 14 represents a variant in which the distance over which the rolling dead bolt 51 is pushed in an operational position outside the lock case 2 can be adjusted.
To this end, a threaded hole is provided in the lath 5 and in the corresponding side wall 4 of the lock case 2 through which is provided an adjusting screw 54 forming a stop for the protruding part 26 of the crank handle 22.
It is clear that, by turning the adjusting screw 54, the distance over which the crank handle 22 can rotate in a sense Dl is adjusted, and that by setting the adjusting screw 54 in a position in which the crank handle 22 can only rotate in a restricted manner, also the rotation of the fingerplate 23 is restricted in a sense according to Dl, such that the finger 33 of the fingerplate 23 restricts the translation of the rolling dead bolt 51 outside the lock case 2.
The present invention is by no means limited to the embodiments described above and represented in the drawings; on the contrary, such a lock according to the invention can be made according to all sorts of variants while still remaining within the scope of the invention as defined by the claims.

Claims

Door or window lock which mainly consists of a lock case (2) in which has been provided a lock latch or dead bolt (9, 51) movable between a position in which a body (10) of the dead bolt (9, 51) is situated entirely or almost entirely in the lock case (2) and a position of rest in which this body (10) is situated largely outside the lock case (2) and whereby a stop is provided in the lock case (2) which restricts the movement of the dead bolt (9, 51) outside the lock case (2), whereby the lock latch or dead bolt (9, 51) is fixed in the lock case (2) in a rotatable or detachable manner and whereby the above-mentioned stop is variable and works in conjunction with a spring (35) which counteracts the variation of the stop away from the position of rest, such that, provided a force is exerted against the spring (35) the body (10) of the lock latch or dead bolt (9, 51) can be moved entirely outside the lock case (2) without opening the lock case (2), characterised in that the above-mentioned stop mainly consists of a lath (39) that can be axially moved in the lock case (2) and that can work in conjunction with a fingerplate (23) provided with a finger (33) working in conjunction with the above-mentioned lock latch or dead bolt (9, 51), whereby the lath (39) works in conjunction with the above mentioned spring (35) that counteracts a displacement of the lath (39) by the fingerplate (23).
Lock according to claim 1, characterised in that the lath (39) is provided with a standing collar (40) and in that the above-mentioned spring (35) is provided between this collar (40) and a stop (28).
Lock according to claim 2, characterised in that the above-mentioned stop (28) is part of what is called a crank handle (22) which, when the lock latch or dead bolt (9, 51) is moved from a position of rest to far outside the lock case (2), rests with a protruding part (26) against a wall (4) of the lock case (2), such that this crank handle (22) is locked while rotating.
Lock according to any one of the preceding claims, characterised in that the lock latch or dead bolt (9, 51) is formed of a body (10) on which is fixed a shaft (11).
Lock according to claim 4, characterised in that the lock latch or dead bolt (9, 51) is fixed with its shaft (11) in a holder (14) which is provided in a movable manner in the lock case (2).
Lock according to claim 5, characterised in that the lock latch or dead bolt (9, 51) is fixed with a bayonet catch in the holder (14).
Lock according to claims 1 and 5, characterised in that the above-mentioned finger (33) of the fingerplate (23) works in conjunction with a recess (21) in the above-mentioned holder (14).
Lock according to any one of claims 5 to 7, characterised in that the holder (14), on its side that is turned away from the lock latch or dead bolt (9, 51), works in conjunction with a spring (20).
Lock according to any one of the preceding claims, characterised in that the lock latch (9) has a wedge-shaped body (10).
Lock according to any one of the preceding claims, characterised in that the dead bolt is a rolling dead bolt (51) with a U-shaped body in which a roller is fixed in a freely rotating manner.
Lock according to any one of the preceding claims, characterised in that it comprises a cylinder (44) which works indirectly in conjunction with a tooth lath (49) which makes it possible to drive the lock latch or dead bolt (9, 51) in a displacement between a position of rest in which the body (10) of the lock latch or dead bolt (9, 51) is situated partly outside the lock case (2) and a position in which the body (10) of the lock latch or dead bolt (9, 51) has been entirely or practically drawn back in the lock case (2).