[0001] This invention relates to a door lock.
[0002] It is commonplace for doors for houses and vehicles to be provided with one or more
locks, in order to prevent unauthorised access to the house or vehicle. Many different
types of lock are available and it is relatively common to use more than one lock
on a particular door, particularly if the contents of the house or the vehicle being
secured are valuable. Caravans are usually provided with a single lock on the door
that can be locked to prevent unauthorised access to caravan. However, simple mortice
and deadlocks do not necessarily provide sufficient protection for many caravan doors,
as they can be easily forced open by determined criminals. The construction of most
caravan doors is such that they can be easily bent or pressed such that the conventional
lock, which may only have a small 2cm engagement with the door frame, can be forced.
[0003] United Kingdom Patent
GB 2489912 B discloses an improved door lock. This Patent discloses a door lock, preferably for
a caravan, that comprises a front plate, a locking bar rotationally connected to the
front plate and extending beyond the front plate and pivotable from an unlocked position
to a locked position where it extends across the joint between the door and the frame;
a back plate connected to and behind the front plate; a locking mechanism mounted
in the front plate and when locked preventing rotation of the locking bar relative
to the front plate; a locking handle mounted on the back plate and when locked preventing
rotation of the locking bar relative to the front plate and an opening handle mounted
on the back plate and connected to the locking bar for rotating the locking bar relative
to the front plate. The two handles are preferably located inside the caravan and
allow the externally mounted locking bar to be locked/unlocked. While this door lock
has many advantages, the door lock can only be fitted where direct access to the back
of the portion that is to mount the door lock is possible. This means that the door
lock cannot always be used, if access to the necessary area is not possible.
[0004] Other door locks are disclosed in German Utility Models
DE 202009000484 and
DE 202010000432. In a similar manner to the door lock described above, these door locks are restricted
in the ways in which they can be fitted to existing doors.
[0005] It is therefore an object of the invention to improve upon the known art.
[0006] According to the present invention, there is provided a door lock comprising a base
comprising one or more screw holes passing through the base, a locking bar rotationally
connected to the base and extending beyond the base, the locking bar having a first
locked position covering the one or more screw holes and a second open position not
covering the one or more screw holes, and a locking mechanism, when locked preventing
rotation of the locking bar relative to the base characterised in that the locking
bar is mounted on one side of the base and the base further comprises one or more
additional screw holes located on the opposite side of the base to the locking bar,
the additional screw holes not passing through the base.
[0007] Owing to the invention, it is possible to provide a door lock that can be used, for
example on a caravan, which does not require access to the rear of the area (such
as a door frame) to which the door lock is to be mounted, while also supporting a
mounting through the additional screw holes on the rear of the base. The provision
of the front facing screw holes through the base of the door lock, which are only
accessible when the locking bar is open, means that the door lock can be front mounted
through these front facing screw holes, without any lack of security, since the screw
holes (and therefore the screws in those holes) are not accessible once the locking
bar is in its locked position. The provision of the rear facing screw holes, which
do not pass entirely through the base of the door lock, enable the door lock to be
mounted from the rear.
[0008] The door lock can be provided as a kit of parts, with additional plates of different
shapes and sizes that will facilitate the mounting of the door lock in other situations,
for example where rear access is possible or where the door lock must be mounted on
the side of the door frame. The kit provides a door lock that can be mounted in multiple
different configurations, which provides the end user with a usable door lock, no
matter how the door lock has to be mounted.
[0009] Embodiments of the present invention will now be described, by way of example only,
with reference to the accompanying drawings, in which:-
Figure 1 is a perspective view from behind of a door lock in its closed configuration,
Figure 2 is a front view of the door lock in its open configuration,
Figure 3 is a perspective view from behind of the door lock mounted with a first plate,
Figure 4 is a perspective view from behind of the door lock mounted with a second
plate,
Figure 5 is a perspective view from behind of the door lock mounted with a third plate,
and
Figure 6 is a front via of the door lock mounted on a door frame of a door.
[0010] Figure 1 shows a door lock 10 comprising a base 12 comprising one or more front facing
screw holes 14 passing through the base 12, a locking bar 16 rotationally connected
to the base 12 and extending beyond the base 12, the locking bar 16 having a first
locked position covering the one or more screw holes 14 and a second open position
not covering the one or more screw holes 14, and a locking mechanism 18, when locked
preventing rotation of the locking bar 16 relative to the base 12. In this Figure,
the locking bar 16 is shown in its locked position. The locking mechanism 18 is located
in the locking bar 16 and is operated by a key 19.
[0011] The locking bar 16 is mounted on one side of the base 12 and the base 12 further
comprises one or more additional rear facing screw holes 20 located on the opposite
side of the base 12 to the locking bar 16, the additional screw holes 20 not passing
through the base 12. The door lock 10 further comprises a gasket 22, the gasket 22
of a similar size and shape to the base 12 and comprising one or more holes 24, the
position of the holes 24 in the gasket 22 matching the position of the screw holes
14 and/or additional screw holes 20 in the base 12. The gasket 22 is made of rubber
or other similar material is used to provide a water seal, when the door lock 10 is
in use.
[0012] The door lock 10 is intended to be used to lock a door that opens outwards, as a
retro fit to the door frame, rather than to the door that is being protected. The
door lock 10 can be fixed in position in a number of different ways, using different
combinations of the components that are supplied with the door lock 10, in order to
protect the door in question. Which combination of components is used will depend
upon the structure and position of the door frame. The Figure 1 arrangement is a front
screwed fixing of the door lock 10, using screws 21, that does not require any access
to the rear of the frame to which the lock 10 is being fitted.
[0013] Figure 2 shows the door lock 10 with the locking bar 16 in its open position, rotated
by 90 degrees relative to its closed position. A door is protected by the door lock
10, with the door lock 10 being mounted on a door frame. When the locking bar 16 is
in the open position, then the front facing screw holes 14 in the base 12 are accessible
from the front of the door lock 10. This allows the door lock 10 to be fixed to the
frame from the front, when the door lock 10 is first mounted. The screws 21 can be
located in the screw holes 14 to fasten the door lock in position, but are not accessible
when the locking bar 16 is in its locked position.
[0014] The location of the screw holes 14 in the base 12 allow the door lock 10 to be front
mounted, without any access to the rear of the door frame 102 required when the door
lock 10 is first installed. To mount the door lock 10 from the front, then the locking
bar 16 is turned to its unlocked position, as shown in Figure 2, which provides access
to the screw holes 14. This allows an installer access to the screw holes 14, to screw
the base 12 to the door frame. Once the door lock 10 is screwed in position, then
the locking bar 16 will be turned to cover the screw holes 14 to prevent the door
lock 10 being unscrewed.
[0015] The door lock 10 is provided with a locking mechanism 18, which is operated with
the key 19. The key 19 is turned to lock the locking mechanism 18 and can be removed.
The locking mechanism 18 forms part of the locking bar 16 and when the locking mechanism
18 is locked by the key 19, then locking bar 16 cannot be rotated relative to the
base 12. A user of the door lock 10 moves the locking bar 16 to the desired position
and then locks the locking bar 16 in that position by turning the key 19 to lock the
locking mechanism 18, which prevents any further rotation of the locking bar 16.
[0016] Figure 3 shows an alternative mounting of the door lock 10. In this example, the
door lock 10 is not front mounted as the screw holes 14 in the base 12 are not used.
This configuration uses a first plate 26. The first plate 26 comprises a flat portion
28 of a similar size and shape to the base 12 and a fixing portion 30 connected to
the flat portion 28 and in a plane at right angles to the plane of the flat portion
28, the flat portion 28 comprising one or more holes 32, the position of the holes
32 in the flat portion 28 matching the position of the screw holes 14 and/or additional
rear facing screw holes 20 in the base 12, the fixing portion 30 comprising one or
more holes 34.
[0017] To mount the door lock 10 using the first plate 26, then the first plate 26 is screwed
to the back of base 12 using screws 27 that pass through holes 32 in the flat portion
28 of the first plate 26 and mate with the additional screw holes 20 in the rear of
the base 12. The door lock 10 and first plate 26 can then be mounted onto a door frame
by using screws 29 through holes 34 in the fixing portion 30 of the first plate 26.
The door lock 10 is therefore side mounted, with door lock being robustly connected
to the door frame via the fixing portion 30 of the first plate 26.
[0018] The screws 29 are not accessible to a third party once the door lock 10 has been
mounted in position and the door being protected has been closed. This means that
the door lock 10 can secure a door while being side mounted onto the door frame and
the user of the door lock can then interact with the lock 10 in the same manner as
any other mounting of the door lock 10. The user unlocks the door lock 10 with the
key 19 in the locking mechanism 18. This allows the locking bar 16 to be rotated into
a position where it is no longer preventing the door in question from opening.
[0019] Figure 4 shows another configuration of the door lock 10, which is similar to that
shown in Figure 3, except a second plate 36 is used in place of the first plate 26.
The second plate 36 is smaller than the first plate 26 and this second plate 36 is
provided in order to support the mounting of the door lock 10 in a wider variety of
different situations, for example where space is limited around the door frame to
which the door lock 10 is being affixed. A support plate 37 can also be provided that
can be used to adjust the position of the second plate 36, if needed.
[0020] The second plate 36 comprises a flat portion 38 of a smaller size than the base 12
and a fixing portion 40 connected to the flat portion 38 and in a plane at right angles
to the plane of the flat portion 38, the flat portion 38 comprising one or more holes
42, the position of the holes 42 in the flat portion 38 matching the position of the
screw holes 14 and/or additional screw holes 20 in the base 12, the fixing portion
40 comprising one or more holes 44. Screws 39 are used to fix the base 12 to the second
plate 36 and screws 41 are then used to fix the door lock 10 to the frame of a door.
[0021] The configuration shown in Figure 4, similar to that of Figure 3, allows the door
lock to be mounted on the side of a door frame, allowing the door lock 10 to be fixed
in place where no access is available to the front or rear of the door frame. The
provision of the two different plates 26 and 36 gives the user of the door lock flexibility
on how they will install the door lock, in this situation where they must mount the
lock using screws that pass into the side of the door frame. In the Figure 4 configuration,
a smaller plate 38 is used than in the Figure 3 configuration.
[0022] Figure 5 shows a yet further configuration of the door lock 10, this time fixed in
place using a third plate 46 and cover 52. The planar third plate 46 comprises a flat
portion 48 of a similar size and shape to the base 12, the flat portion 48 comprising
one or more holes 50, the position of the holes 50 in the flat portion 48 matching
the position of the screw holes 14 and/or additional screw holes 20 in the base 12.
This configuration further comprises a cover 52, the cover 52 of a similar size and
shape to the base 12 and for fixing to the planar third plate 46.
[0023] The configuration of the door lock 10 shown in Figure 5 is a rear mounted fixing
of the door lock 10, which can be used if the installer of the lock 10 has access
to the rear of the surface that is mounting the door lock 10. The lock 10 is fixed
into position by using screws 54 through the holes 50 in the third plate 46 and into
the rear of the base 12 of the door lock 10. The gasket 22 can also be used in this
configuration, which will be fixed between the base 12 and the door frame to which
the door lock is being mounted.
[0024] The door lock 10 is supplied as a kit of parts with the main component being the
locking bar 16 connected to the base 12 as a single integral component made from plastics
coated metal, with the various plates and screws supplied in addition that can be
used to mount the door lock 10 in the desired configuration, depending upon the structure
of the door and door frame to which the door lock is being mounted. In general, rear
fitting is the most secure (as shown in Figure 5) but if the installer cannot access
the rear of the door frame, then front or side fitting is supported, without any loss
of security.
[0025] Figure 6 shows the door lock 10 in use, being located to protect a door 56. The door
lock 10 is mounted on the door frame 58 and is shown in the Figure with the locking
bar 16 in its open position. The door 56 is hinged on the right and opens outwards
(towards the viewer of the Figure). The door lock has been front mounted, as per the
Figure 1 configuration of the door lock 10. When the locking bar 16 is rotated into
its locked position, turned 90 degrees anti-clockwise from the open position shown
in the Figure, then the door 56 cannot be opened. The locking mechanism 18 can then
be locked by the key 19 and this prevents unauthorised opening of the door 56, by
the provision of the retrofitted door lock 10.
1. A door lock (10) comprising a base (12) comprising one or more screw holes (14) passing
through the base (12), a locking bar (16) rotationally connected to the base (12)
and extending beyond the base (12), the locking bar (16) having a first locked position
covering the one or more screw holes (14) and a second open position not covering
the one or more screw holes (14), and a locking mechanism (18), when locked preventing
rotation of the locking bar (16) relative to the base (12), characterised in that the locking bar (16) is mounted on one side of the base (12) and the base (12) further
comprises one or more additional screw holes (20) located on the opposite side of
the base (12) to the locking bar (16), the additional screw holes (20) not passing
through the base (12).
2. A door lock according to claim 1, wherein the locking mechanism (18) is located in
the locking bar (16).
3. A door lock according to claim 1 or 2, and further comprising a gasket (22), the gasket
(22) of a similar size and shape to the base (12) and comprising one or more holes
(24), the position of the holes (24) in the gasket (22) matching the position of the
screw holes (14) and/or additional screw holes (20) in the base (12).
4. A door lock according to any preceding claim, and further comprising a first plate
(26) comprising a flat portion (28) of a similar size and shape to the base (12) and
a fixing portion (30) connected to the flat portion (28) and in a plane at right angles
to the plane of the flat portion (28), the flat portion (28) comprising one or more
holes (32), the position of the holes (32) in the flat portion (28) matching the position
of the screw holes (14) and/or additional screw holes (20) in the base (12), the fixing
portion (30) comprising one or more holes (34).
5. A door lock according to any preceding claim, and further comprising a second plate
(36) comprising a flat portion (38) of a smaller size than the base (12) and a fixing
portion (40) connected to the flat portion (38) and in a plane at right angles to
the plane of the flat portion (38), the flat portion (38) comprising one or more holes
(42), the position of the holes (42) in the flat portion (38) matching the position
of the screw holes (14) and/or additional screw holes (20) in the base (12), the fixing
portion (40) comprising one or more holes (44).
6. A door lock according to any preceding claim, and further comprising a planar third
plate (46) comprising a flat portion (48) of a similar size and shape to the base
(12), the flat portion (48) comprising one or more holes (50), the position of the
holes (50) in the flat portion (48) matching the position of the screw holes (14)
and/or additional screw holes (20) in the base (12).
7. A door lock according to claim 6, and further comprising a cover (52), the cover (52)
of a similar size and shape to the base (12) and for fixing to the planar third plate
(46).
1. Türschloss (10), umfassend eine Basis (12), die ein oder mehrere Schraubenlöcher (14)
umfasst, die durch die Basis (12) hindurchgehen, einen Sperrriegel (16), der drehbar
mit der Basis (12) verbunden ist und sich über die Basis (12) hinaus erstreckt, wobei
der Sperrriegel (16) eine erste verriegelte Stellung, die das eine oder die mehreren
Schraubenlöcher (14) abdeckt, und eine zweite offene Stellung, die das eine oder die
mehreren Schraubenlöcher (14) nicht abdeckt, aufweist, und einen Verriegelungsmechanismus
(18), der, wenn er verriegelt ist, eine Drehung des Sperrriegels (16) im Verhältnis
zu der Basis (12) verhindert, dadurch gekennzeichnet, dass der Sperrriegel (16) auf der einen Seite der Basis (12) angeordnet ist und die Basis
(12) ferner ein oder mehrere zusätzliche Schraubenlöcher (20) umfasst, die auf der
zu dem Sperrriegel (16) entgegengesetzten Seite der Basis (12) angeordnet sind, wobei
die zusätzlichen Schraubenlöcher (20) nicht durch die Basis (12) hindurchgehen.
2. Türschloss nach Anspruch 1, wobei der Verriegelungsmechanismus (18) in dem Sperrriegel
(16) angeordnet ist.
3. Türschloss nach Anspruch 1 oder 2 und das ferner eine Dichtung (22) umfasst, wobei
die Dichtung (22) von einer ähnlichen Größe und Form ist wie die Basis (12) und ein
oder mehrere Löcher (24) umfasst, wobei die Position der Löcher (24) in der Dichtung
(22) der Position der Schraubenlöcher (14) und/oder der zusätzlichen Schraubenlöcher
(20) in der Basis (12) entspricht.
4. Türschloss nach einem der vorhergehenden Ansprüche und das ferner eine erste Platte
(26) umfasst, die einen flachen Abschnitt (28) von einer ähnlichen Größe und Form
wie die Basis (12) und einen Befestigungsabschnitt (30), der mit dem flachen Abschnitt
(28) verbunden ist und sich in einer Ebene im rechten Winkel zu der Ebene des flachen
Abschnitts (28) befindet, umfasst, wobei der flache Abschnitt (28) ein oder mehrere
Löcher (32) umfasst, wobei die Position der Löcher (32) in dem flachen Abschnitt (28)
der Position der Schraubenlöcher (14) und/oder der zusätzlichen Schraubenlöcher (20)
in der Basis (12) entspricht, wobei der Befestigungsabschnitt (30) ein oder mehrere
Löcher (34) umfasst.
5. Türschloss nach einem der vorhergehenden Ansprüche und das ferner eine zweite Platte
(36) umfasst, die einen flachen Abschnitt (38) von einer kleineren Größe als die Basis
(12) und einen Befestigungsabschnitt (40), der mit dem flachen Abschnitt (38) verbunden
ist und sich in einer Ebene im rechten Winkel zu der Ebene des flachen Abschnitts
(38) befindet, umfasst, wobei der flache Abschnitt (38) ein oder mehrere Löcher (42)
umfasst, wobei die Position der Löcher (42) in dem flachen Abschnitt (38) der Position
der Schraubenlöcher (14) und/oder der zusätzlichen Schraubenlöcher (20) in der Basis
(12) entspricht, wobei der Befestigungsabschnitt (40) ein oder mehrere Löcher (44)
umfasst.
6. Türschloss nach einem der vorhergehenden Ansprüche und das ferner eine ebene dritte
Platte (46) umfasst, die einen flachen Abschnitt (48) von einer ähnlichen Größe und
Form wie die Basis (12) umfasst, wobei der flache Abschnitt (48) ein oder mehrere
Löcher (50) umfasst, wobei die Position der Löcher (50) in dem flachen Abschnitt (48)
der Position der Schraubenlöcher (14) und/oder der zusätzlichen Schraubenlöcher (20)
in der Basis (12) entspricht.
7. Türschloss nach Anspruch 6 und das ferner eine Abdeckung (52) umfasst, wobei die Abdeckung
(52) von einer ähnlichen Größe und Form ist wie die Basis (12) und zum Befestigen
an der ebenen dritten Platte (46) dient.
1. Verrou de porte (10) comprenant une base (12) comprenant un ou plusieurs trous filetés
(14) traversant la base (12), une barre de verrouillage (16) reliée de façon rotative
à la base (12) et s'étendant au-delà de la base (12), la barre de verrouillage (16)
présentant une première position verrouillée couvrant les un ou plusieurs trous filetés
(14) et une deuxième position ouverte ne couvrant pas les un ou plusieurs trous filetés
(14), et un mécanisme de verrouillage (18), empêchant la rotation de la barre de verrouillage
(16) par rapport à la base (12) lorsqu'il est verrouillé, caractérisé en ce que la barre de verrouillage (16) est montée sur un côté de la base (12) et la base (12)
comprend en outre un ou plusieurs trous filetés supplémentaires (20) situés sur le
côté opposé de la base (12) par rapport à la barre de verrouillage (16), les trous
filetés supplémentaires (20) ne traversant pas la base (12).
2. Verrou de porte selon la revendication 1, dans lequel le mécanisme de verrouillage
(18) se situe dans la barre de verrouillage (16).
3. Verrou de porte selon la revendication 1 ou 2, comprenant en outre un joint d'étanchéité
(22), le joint d'étanchéité (22) présentant une taille et une forme similaires à celles
de la base (12) et comprenant un ou plusieurs trous (24), la position des trous (24)
dans le joint d'étanchéité (22) correspondant à la position des trous filetés (14)
et/ou des trous filetés supplémentaires (20) dans la base (12).
4. Verrou de porte selon l'une quelconque des revendications précédentes, comprenant
en outre une première plaque (26) comprenant une partie plate (28) présentant une
taille et une forme similaires à celles de la base (12) et une partie de fixation
(30) reliée à la partie plate (28) et dans un plan en angles droits par rapport au
plan de la partie plate (28), la partie plate (28) comprenant un ou plusieurs trous
(32), la position des trous (32) dans la partie plate (28) correspondant à la position
des trous filetés (14) et/ou des trous filetés supplémentaires (20) dans la base (12),
la partie de fixation (30) comprenant un ou plusieurs trous (34).
5. Verrou de porte selon l'une quelconque des revendications précédentes, comprenant
en outre une deuxième plaque (36) comprenant une partie plate (38) présentant une
taille et une forme similaires à celles de la base (12) et une partie de fixation
(40) reliée à la partie plate (38) et dans un plan en angles droits par rapport au
plan de la partie plate (38), la partie plate (38) comprenant un ou plusieurs trous
(42), la position des trous (42) dans la partie plate (38) correspondant à la position
des trous filetés (14) et/ou des trous filetés supplémentaires (20) dans la base (12),
la partie de fixation (40) comprenant un ou plusieurs trous (44).
6. Verrou de porte selon l'une quelconque des revendications précédentes, comprenant
en outre une troisième plaque planaire (46) comprenant une partie plate (48) présentant
une taille et une forme similaires à celles de la base (12), la partie plate (48)
comprenant un ou plusieurs trous (50), la position des trous (50) dans la partie plate
(48) correspondant à la position des trous filetés (14) et/ou des trous filetés supplémentaires
(20) dans la base (12).
7. Verrou de porte selon la revendication 6, comprenant en outre un cache (52), le cache
(52) présentant une taille et une forme similaires à celles de la base (12) et étant
destiné à être fixé à la troisième plaque planaire (46).