TECHNICAL FIELD
[0001] The present invention relates to a lock for a door or a window. In particular, the
present invention makes reference to the technical field of door closing devices.
PRIOR ART
[0002] As is well known, there exist locks that effect the closure of a leaf, which is movable
relative to the frame of the door or window, by means of a bolt that is reversibly
movable, relative to the leaf, between an extracted position and a retracted position.
In greater detail, the bolt is configured to engage, on command, in a seat provided
in the frame so as to lock the leaf and effect the closure of the door or window.
[0003] Generally, such locks have a lock body that can be housed in the thickness of the
leaf and comprises the bolt. In particular, the bolt is moved between the extracted
position and the retracted position thanks to the rotation of a square bar that passes
through the lock body.
[0004] Such locks further comprise a pair of handles at least partially recessed into the
exposed surface of the leaf and at least one of which is connected to the square bar
so as to control the movement of the bolt. In particular, each handle comprises a
receptacle adapted to be recessed into the surface of the leaf and configured to receive
an actuating member, typically a latch, directly connected to the square bar. In greater
detail, if the lock is intended for a door or window for which the bolt must be actuated
from only one side, for example, from the inside of a room, the latch is suitably
shaped in order that it can be gripped and actuated manually by a user. In the handle
positioned on the other side, by contrast, typically on the outside of the room, the
latch cannot be gripped, but rather has an indentation for a tool, or a coin, so as
to allow only a possible emergency opening of the lock and, therefore, of the door
or window. Alternatively, the handle on the outside is idly mounted on the square
bar. Such locks and handles pose several drawbacks.
[0005] Firstly, accurate, time-consuming work on the leaf is necessary to create the recessed
seat for each receptacle.
[0006] Secondly, the field of application of such locks and handles is disadvantageously
limited by the thickness of the leaf. In fact, each receptacle requires a recessed
seat having a minimum depth, so it is essential that the leaf have a sufficient thickness,
both for installing the lock and for creating the recessed seat.
[0007] Disadvantageously, moreover, the above-described handles are not very ergonomic and,
especially in the case of hinged leaves, they require auxiliary gripping members,
typically extractable. This circumstance introduces constructive complications and
higher costs.
[0008] Document
DE 29707200 U1, in accordance with the introductory part thereof, describes a lock for doors of
bathrooms or toilets with a rotatable handle disposed inside the room and a display
device positioned outside the room to display the "closed" status.
OBJECTS OF THE INVENTION
[0009] In this context, therefore, it would be desirable to have a lock for a door or a
window capable of addressing at least some of the abovementioned problems.
[0010] In particular, one object of the present invention is to provide a lock that can
be mounted on leaves having reduced thicknesses.
[0011] A further object of the present invention is to propose a lock that can be rapidly
and easily installed.
[0012] Another object of the present invention is to provide a lock that is simple to use.
[0013] The stated technical task and specified objects are substantially achieved by a lock
for a door or a window comprising the technical features disclosed in one or more
of the appended claims.
[0014] The dependent claims correspond to possible embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Additional features and advantages of the present invention will emerge more clearly
from the approximate, and thus non-limiting, description of a preferred but not exclusive
embodiment of a lock for a door or a window as illustrated in the appended drawings,
in which:
- figure 1 is a perspective view of a lock for a door or a window in accordance with
a possible embodiment of the present invention;
- figure 2 is a representation, in an exploded view, of a portion of the lock in figure
1;
- figure 3 is an enlarged view of a constructive detail of the portion of the lock shown
in figure 2;
- figure 4 is a sectional view of the lock in figure 1;
- figure 5 is a further sectional view of the lock in figure 1;
- figure 6 is an exploded perspective view of a lock for a door or a window in accordance
with a further possible embodiment of the present invention;
- figure 7 is a representation, in an exploded view, of a portion of the lock in figure
6;
- figures 8 and 9 are sectional views of the lock in figure 6;
- figures 10 and 11 are sectional views of a lock for a door or a window in accordance
with further possible embodiments of the present invention.
DETAILED DESCRIPTION
[0016] With reference to the appended figures, a lock for a door or a window according to
the invention has been denoted in its entirety by the reference number 1.
[0017] The lock 1 comprises a lock body 2 connectable to a leaf "A" (figures 4 and 8) of
a door or a window.
[0018] In particular, the lock body 2 comprises a locking element 3 that is reversibly movable
between a retracted position, in which it is at least partly housed inside the lock
body 2, and an extracted position, in which it is at least partly projecting from
the lock body 2 so as to define a condition of closure of the door or the window.
[0019] Preferably, the locking element 3 comprises a bolt 4.
[0020] Advantageously, the lock body 2 can comprise a magnetic retaining device 5 configured
to interact magnetically with a counter-plate (not illustrated) installed on the frame
of the door or the window. In this manner, the leaf "A" can be kept firmly in a closed
position without the activation of the bolt 4.
[0021] With particular reference to figures 1 and 6, the lock 1 further comprises an actuating
means 6 for moving the locking element 3.
[0022] In accordance with a possible embodiment illustrated in figures 1-5, the actuating
means 6 comprises a bar 13 with a polygonal cross section which is active on the lock
body 2 and reversibly rotatable in order to move the locking element 3 at least between
the retracted position and the extracted position. For example, the bar 13 can have
a quadrangular cross section, preferably a square one. It should be underscored that
the kinematic mechanism of the transmission of motion between the bar 13 and the bolt
4 is of a known type and not illustrated.
[0023] As may be better seen in figures 4, 5, 8 and 9, the lock 1 comprises a fixed handle
7 that is connectable to the leaf "A" and can be gripped by a user. In particular,
the fixed handle 7 is solidly joined to the lock body 2. Furthermore, the lock 1 comprises
a rotating handle 8 that is connectable to the leaf "A" and can be gripped by a user.
[0024] The rotating handle 8 is solidly coupled to the actuating means 6 and rotatable relative
to the lock body 2 in order to move the locking element 3 between the extracted position
and the retracted position. Advantageously, moreover, the actuating means 6 and at
least the rotating handle 8 can be telescopically coupled to enable the lock to be
adapted to the thickness of the leaf.
[0025] For example, the fixed handle 7 and the rotating handle 8 can be disposed, respectively,
on the surface of the leaf outside a room and on the surface of the leaf inside a
room.
[0026] Preferably, the actuating means 6 is disposed at least partly inside the rotating
handle 8. In other words, the rotating handle 8 can be configured to house the actuating
means 6 at least partly, thereby imparting a particular aesthetic appeal to the lock
1.
[0027] With particular reference to figures 2 and 7, the lock 1 further comprises a first
support element 9 and a second support element 10, each having a longitudinal dimension
of extension such that they take on a configuration, during use, projecting from a
leaf "A".
[0028] Advantageously, the fixed handle 7 and the rotating handle 8 can be fitted over the
first support element 9 and the second support element 10, respectively.
[0029] In this manner, the fixed handle 7 and the rotating handle 8 can be disposed, during
use, on the outside of the leaf "A", thereby increasing the convenience of the door
or window, since the user can readily grip the handles without needing to rely on
complex extraction procedures. Advantageously, this solution is highly ergonomic,
as it simplifies the procedure of locking the leaf, allowing the leaf to be closed
and subsequently locked with a single continuous sequence of movements of the same
hand.
[0030] In a further advantageous manner, this solution makes it possible to simplify and
speed up the installation of the lock by minimising the milling operations on the
leaf "A" compared to the prior art.
[0031] For this reason, moreover, the present lock 1 can be advantageously mounted on leaves
having a reduced thickness, even only slightly larger than that of the lock body 2.
Therefore, the lock according to the invention can have particular and effective application
on glass leaves and, in general, on leaves having a thickness equal to or less than
14 millimetres. With reference to the variant embodiments shown in figures 4, 5, and
8-11, the first support element 9 and the second support element 10 can be completely
housed inside the fixed handle 7 and the rotating handle 8, thus being, during use,
substantially out of view so as to increase the aesthetic appeal of the lock 1.
[0032] Advantageously, the fixed handle 7 and/or the rotating handle 8 can be in the form
of a knob, thus ensuring optimal ergonomics and a high aesthetic appeal of the lock
1.
[0033] According to further possible embodiments, the handle can have a different form,
for example to satisfy the user's needs, without altering the inventive concept of
the present invention.
[0034] With particular reference to figures 2 and 7, the lock 1 comprises a circlip 30 active
on the rotating handle 8 in order to keep it fitted over the second support element
10.
[0035] Furthermore, the lock 1 comprises a connecting grub screw 40 active on the fixed
handle 7 in order to keep it fitted over the first support element 9. Preferably,
the first support element 9 and the second support element 10 are connectable to the
leaf "A" and/or lock body 2 so that the latter is at least partly interposed between
them, and thus between the fixed handle 7 and the rotating handle 8.
[0036] As illustrated in the appended figures, the lock 1 can comprise fixing elements 11,
for example screws, suitable for connecting the first support element 9 and the second
support element 10 to the leaf "A", thereby ensuring particular stability and robustness
of the lock 1.
[0037] For example, the fixing elements 11 are connected to the first support element 9
and second support element 10 in such a way that, during use, the fixed handle 7 and
the rotating handle 8 are opposite relative to the leaf "A" of the door or window
and, preferably, have respective axes of extension that coincide. According to a further
preferred configuration, the axes of extension of the handles 7, 8 coincide with the
axis of extension of the bar 13.
[0038] Preferably, the first support element 9 and the second support element 10 can have,
respectively, a pair of housings 50 adapted to receive, by insertion, the fixing elements
11.
[0039] With particular reference to figure 10, the fixing elements 11 can comprise four
screws, each of which inserted into a corresponding housing 50 and screwed, when in
use, directly onto the leaf "A".
[0040] In accordance with further possible embodiments and as illustrated in figures 4 and
11, the fixing elements 11 can, when in use, pass through the leaf "A" and the lock
body 2.
[0041] As shown in figure 4, the fixing elements 11 can be inserted into the housings 50
of the first support element 9 so as to be connected to respective housings 50 of
the second support element 10, in such a way as to maintain the first support element
9 and the second support element 10 constrained to the leaf "A".
[0042] With particular reference to figure 11, the fixing elements 11 can be inserted into
the housings 50 of the first support element 9 and screwed into a respective female
screw inserted in the housings 50 of the second support element 10.
[0043] Furthermore, as the fixed handle 7 and the rotating handle 8 can be fitted, during
use, over the support elements 9, 10, they hide the fixing elements 11 from view,
thus imparting aesthetic quality to the lock 1.
[0044] With particular reference to figures 2, 3, 4 and 5, the lock 1 can comprise an auxiliary
control device 12 at least partly housed in the fixed handle 7. The auxiliary control
device 12 can be activated in order to move the locking element 3 at least from the
extracted position to the retracted position.
[0045] In this manner, the auxiliary control device 12 can define, for example, an emergency
opening system for the door or window.
[0046] The auxiliary control device 12 can further be activated in order to reversibly move
the locking element 3 from the retracted position to the extracted position.
[0047] In greater detail (figures 2 and 3), the auxiliary control device 12 comprises a
control member 14 solidly joined to the bar 13 and having a seat 15, preferably an
indentation, adapted to receive a tool for external actuation by a user. For example,
the tool for external actuation can consist in a coin and/or the tip of a screwdriver.
[0048] Preferably, the control member 14 is fitted over the bar 13 and coupled thereto by
virtue of their mating shape, in such a way as to optimise the overall dimensions
of the lock 1. In particular, the control member 14 has a first portion 16, fitted
over the bar 13, and a second portion 17 exposed to view (when the lock is in use)
and bearing the seat 15.
[0049] As illustrated in figures 2-5, the first portion 16 and the second portion 17 are
reciprocally constrained by virtue of their mating shape, thus minimising the connection
elements and simplifying the manufacturing process.
[0050] For example, the first portion 16 and the second portion 17 can be reciprocally press
fitted.
[0051] Furthermore, the first portion 16 is connected to the bar 13 by means of a circlip
30 which ensures an adequate positioning thereof relative to the first support element
9 of the fixed handle 7.
[0052] In accordance with a further possible embodiment illustrated in figures 6-9, the
lock 1 comprises a cylinder 18 having a shank 19 over which the rotating handle 8
is fitted. Preferably, the rotating handle 8 and the shank 19 are reciprocally coupled
in rotation by means of a coupling grub screw 40.
[0053] In the embodiment shown in figures 6 and 7, the shank 19 essentially defines the
actuating means 6.
[0054] With particular reference to figures 8-9, the fixed handle 7 has an access opening
20 for accessing the cylinder 18 to allow the insertion of a key "C" by a user. In
this manner, the cylinder 18 can also perform the function of an auxiliary control
device for emergency opening.
[0055] Preferably, a plug 21 is further present; it is insertable into the access opening
20 and provided with a through slot adapted to allow the insertion of the key "C".
[0056] In particular, the plug 21 can be connected to the fixed handle 7 by means of a circlip
30 which ensures the correct positioning thereof relative to the access opening 20.
[0057] In accordance with a further aspect, the present invention relates to a door or window
comprising a supporting frame, a leaf "A" which is reversibly movable relative to
the frame between at least an open position and a closed position, and a lock in accordance
with what was previously described.
[0058] It may be observed, therefore, that the present invention achieves the proposed objects
by providing a lock for a door or a window that can also be installed on leaves having
reduced thicknesses.
[0059] Furthermore, the lock according to the invention is capable of enhancing the ergonomics
and convenience for the user thanks to the presence of a fixed handle and a rotating
handle which can be fitted, during use, over a first and a second support element
so as to take on a configuration of projecting from the leaf.
[0060] Advantageously, the present invention provides a lock with a "knob"-style handle
with a gripping system and a leaf stop system in a single solution for locks with
one or more points of activation of the lock for the leaf.
1. A lock (1) for a door or a window comprising:
- a lock body (2) connectable to a leaf of a door or a window and comprising a locking
element (3) that is reversibly movable between a retracted position, in which it is
at least partly housed inside the lock body (2), and an extracted position, in which
it is at least partly projecting from the lock body (2) so as to define a condition
of closure of the door or the window;
- an actuating means (6) for moving the locking element (3);
- a fixed handle (7) that is connectable to the leaf (A) and can be gripped by a user,
said fixed handle (7) being fixed relative to the lock body (2);
- a rotating handle (8) that is connectable to the leaf (A) and can be gripped by
a user, said rotating handle (8) being coupled to the actuating means (6) and rotatable
relative to the lock body (2) in order to move the locking element (3) between the
extracted position and the retracted position;
- a first and a second support element (9, 10) each having a longitudinal dimension
of extension such that they take on a configuration, during use, projecting from a
leaf (A); and wherein the fixed handle (7) and the rotating handle (8) can be fitted
over the first support element (9) and the second support element (10), respectively.
2. The lock in accordance with claim 1, wherein said first and second support elements
(9, 10) are connectable to the leaf (A) and/or to the lock body so that the latter
is at least partly interposed between them.
3. The lock in accordance with claim 1 or 2, comprising at least one fixing element (11)
that is insertable into a through opening of said lock body (2) in order to connect
said first support element (9) and said second support element (10).
4. The lock in accordance with claim 3, wherein the first support element (9) and the
second support element (10) are configured to receive, by at least partial insertion,
the at least one fixing element (11) so that, during use, the rotating handle (8)
and the fixed handle (7) are opposite relative to the leaf (A) of the door or the
window and, preferably, have respective axes of extension that coincide.
5. The lock in accordance with one or more of the preceding claims, comprising at least
one circlip (30) active on the rotating handle (8) in order to keep it fitted over
said second support element (10).
6. The lock in accordance with one or more of the preceding claims, wherein said actuating
means (6) is positioned at least partly inside the rotating handle (8).
7. The lock in accordance with one or more of the preceding claims, comprising an auxiliary
control device (12) at least partly housed in the fixed handle (7), said auxiliary
control device (12) being activatable in order to move the locking element (3) at
least from the extracted position to the retracted position.
8. The lock in accordance with one or more of the preceding claims, wherein said actuating
means (6) comprises a bar (13) with a polygonal cross section which is active on the
lock body and reversibly rotatable in order to move the locking element (3) at least
between the retracted position and the extracted position.
9. The lock in accordance with claim 8 when it depends on claim 7, wherein said auxiliary
control device (12) comprises a control member (14) solidly joined to said bar (13)
and having a seat (15) adapted to receive a tool for external actuation by a user.
10. The lock in accordance with claim 9, wherein said control member (14) is fitted over
the bar (13) and coupled thereto by virtue of their mating shape.
11. The lock in accordance with claim 10, wherein said control member (14) has a first
portion (16), fitted over the bar (13), and a second portion (17), defining said seat
(15); and wherein said first portion (16) and said second portion (17) are reciprocally
constrained by virtue of their mating shape.
12. The lock in accordance with claim 1, comprising a cylinder (18) having a shank (19)
adapted to have the rotating handle (8) fitted over it, said shank (19) at least partly
defining said actuating means (6).
13. The lock in accordance with claim 12, wherein the fixed handle (7) has an access opening
(20) for accessing said cylinder (18) to allow the insertion of a key (C) into the
cylinder (18) by a user.
14. The lock in accordance with claim 12 or 13, comprising a coupling grub screw (40)
active between the rotating handle (8) and the shank (19) in order to couple them
reciprocally in rotation.
15. The lock in accordance with one or more of the preceding claims, wherein the fixed
handle (7) and/or the rotating handle (8) have a knoblike shape.
16. The lock in accordance with one or more of the preceding claims, wherein the actuating
means (6) and at least the rotating handle (8) are telescopically coupled so as to
be adaptable to the thickness of the leaf (A).
17. The lock in accordance with one or more of the preceding claims, wherein the lock
body further comprises a magnetic retaining device (5) configured to interact magnetically
with a counter-plate installed on the frame of the door or the window.
18. A door or a window comprising:
- a supporting frame;
- a leaf (A) which is movable relative to said frame;
- a lock (1) in accordance with one or more of the preceding claims and installed
on said leaf (A).