ATBECHDEDKESFRGBGRITLILUNLSEMCPTIESILTLVFIROMKCYALTRBGCZEEHUPLSKBAHRIS..MTNORSMESMMAKHTNMD..........
J
BDM Ver 2.0.16 (1th of February 2022) - 1100000/0
4148211
EUROPEAN PATENT APPLICATION
A1
20230315
EP
22181125.0
20220624
pl
en
en
43892421
20210910
PL
20230315
202311
20230315
202311
E05B 17/20 20060101AFI20221214BHEP
E05B 65/00 20060101ALI20221214BHEP
E05C 1/08 20060101ALI20221214BHEP
E05B 63/06 20060101ALN20221214BHEP
E05B 65/0007 20130101 FI20221208BHEP
E05C 1/08 20130101 LI20221208BHEP
E05B 17/2034 20130101 LI20221208BHEP
E05B 63/06 20130101 LA20221208BHEP
de
RIEGELVERSCHLUSSMECHANISMUS
en
LATCH LOCKING MECHANISM
fr
MÉCANISME DE VERROUILLAGE D'UN LOQUET
1
WISNIOWSKI SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA SPOLKA KOMANDYTOWO-AKCYJNA
101953699
710030
Wieloglowy 153
33-311 Wieloglowy
PL
Fecko, Marek
33-311 Wielopole
PL
AOMB Polska Sp. z.o.o.
101744766
ul. Rondo Ignacego Daszynskiego 1
00-843 Warsaw
PL
AL
AT
BE
BG
CH
CY
CZ
DE
DK
EE
ES
FI
FR
GB
GR
HR
HU
IE
IS
IT
LI
LT
LU
LV
MC
MK
MT
NL
NO
PL
PT
RO
RS
SE
SI
SK
SM
TR
BA
ME
KH
MA
MD
TN
A latch locking mechanism comprising a stationary body (1), a latch (2) slidably attached to the body (1) and taking an extended position at which it extends from the body (1) and a retracted position when it retracts into the body (1), a spring (3) that drives the latch (2) out of the body, a detent element (4) that takes either an upper position or a lower position. It further comprises a lever (5) pivotally attached to the body (1) for releasing the detent element (4), said lever having an at least one arm (11) at one side and a flat pressure section (12) at the other side, wherein the detent element (4) has a catch (7) at one side and is pivotally attached to the body (1) at the other side. The latch (2) is secured to the body (1) with an at least one pin (6) which is configured to engage the catch (7) of the detent element (4), wherein the catch (7) has a sliding surface (8) which forms an acute angle with a feed axis of the latch (2) allowing the detent element (4) to be turned to the upper position while the latch (2) takes the extended position, and wherein the catch (7) further has a locking surface (9) preventing the latch from being moved into the retracted position when the detent element (4) is in the lower position, and in addition. The detent element (4) has a driver (10) engaging with the at least one arm (11) of the lever (5) and is configured in such a way that upward movement of the least one arm (11) lifts the detent element (4) to the upper position thereby releasing the pin (6) and allowing the latch (2) to retract and the spring (3) to tension.

Field of the invention
The present invention relates to a latch locking mechanism, in particular for panel doors.

Background Art
EP2640914B1 discloses a gate lock comprising a body, which in turn comprises a latch that can house a key for opening the lock and a stop element having a first configuration of engagement on at least a part of the gate. The lock further comprises a slide, which slides with respect to the body. A stop element is slidably constrained to a guide element. This lock does not have an element that extends the locking element. This leads the locking element to rub against an element of the lock, which increases wear of the lock and generates sounds that are unpleasant to the ear.
EP3516135B1 discloses a fitting for a window or a door, wherein a locking element is provided for engaging with a lock-engaging element in a displacement direction running along a rebate. In the locked position said locking element engages in a laterally-open locking slot of the lock-engaging element, the locking slot running along the rebate. A stationary stop is associated and at a short distance from the locking element on the transverse edge of the coupling device, against the locking slot. The stop has a detachable detent mechanism for the lock, spring loaded in the direction of the lock-engaging element, and the detent mechanism is triggered when the lock-engaging element contacts the stop. The triggering element locks the locking element by means of frictional force, which leads to significant wear of the rubbing surfaces during the operation of the lock and to the generation of sounds that are unpleasant to the ear.
The objective of the present invention is to provide a latch locking mechanism that eliminates the above-mentioned disadvantages.

Summary of the Invention
According to the present invention there is provided a latch locking mechanism comprising a stationary body, a latch slidably attached to the body and moving between an extend position at which it extends from the body and a retracted position at which it retracts into the body, a spring that drives the latch out of the body, a detent element that takes either an upper position or a lower position. Furthermore, the latch locking mechanism also comprises a lever pivotally attached to the body for releasing the detent element, said lever having an at least one arm at one side and a flat pressure section at the other side, wherein the detent element has a catch at one side is pivotally attached to the body at the other side. The latch is secured to the body with an at least one pin which is configured to engage the catch of the detent element, and wherein the catch has a sliding surface which forms an acute angle with a feed axis of the latch allowing the detent element to be turned to the upper position while the latch takes the extended position, and wherein the catch has also a locking surface preventing the latch from being moved into the retracted position when the detent element is in the lower position. In addition, the detent element has a driver engaging with the at least one arm of the lever and configured so that the upward movement of the at least one arm lifts the detent element to the upper position thereby releasing the pin and allowing the bolt to retract and the spring to tensioned.
In one embodiment, the latch is attached to the body with two pins.
In another embodiment, the lever has two symmetrical arms.
In another embodiment, the body has a housing fixed thereto and the latch has a housing fixed thereto.
In another embodiment, the latch housing is being retracted into the body housing while the latch is being retracted.
In another embodiment, the detent element has an additional spring which presses it to the lower position.
In another embodiment, the spring is either a pull spring or a pressure spring.
In yet another embodiment, the latch locking mechanism additionally comprises an adjustable stop for adjusting the depth of insertion of the latch into the body.

Brief description of Drawings
The invention will be now explained in more detail in a preferred embodiment with reference to the accompanying drawing in which:
Fig. 1 -
shows a side view of the latch locking mechanism without housing.
Fig. 2 -
shows an axonometric view of the latch locking mechanism without housing.
Fig. 3 -
shows an axonometric view of the latch locking mechanism with housing.

Detailed description of the preferred embodiment
The latch locking mechanism comprises a stationary body 1 made of steel sheet, a bolt 2 made of steel sheet slidably attached to the body 1 and taking an extended position when it extends from the body 1 and a retracted position when it retracts into the body 1. In addition, the latch locking mechanism has a spring 3 that drives the latch 2 out of the body 1 and has a detent element 4 that takes either an upper position or a lower position. The detent element 4 is made of steel sheet in the form of a single-sided hook. In addition, a lever 5 is pivotally secured to the body 1 by means of a pin 6 or other element - not shown in the drawings. The lever 5 releases the detent element 4 by lifting (turning) it. The lever 5 has an at least one arm 11 at one side which configured for lifting the detent element 4, and a flat pressure section 12 at the other side for releasing the detent element 4. The detent element 4 has a catch 7 at one side and is pivotally attached to the body 1 at other side where the catch is in the form of a hook with a sliding surface 8 positioned at an acute angle of 15 to 70 degrees with a feed axis of the latch 2. When locking (the latch is extending), the pin 6 of the latch 2 slides on the sliding surface 8 and lifts (turns) the detent element 4. When the latch 2 is moved further, the pin 6 goes further and contacts a locking surface 9 that is shaped so that the movement of the latch 2 does not lift the detent element 4.
More specifically, the latch 2 is attached to the body 1 by means of one or two pins 6, wherein one of which is configured to engage the catch 7 of the detent 4. In an alternative embodiment, there may be more pins.
In addition, the detent element 4 has a driver 10 engaging with the arm 11 of the lever 5 and configured so that the upward movement of the arm 11 lifts the detent element 4 to the upper position thereby releasing the pin 6 and allowing the bolt 2 to be retracted and the spring to be tensioned 3.
In a preferred embodiment, the mechanism also comprises a housing of the body and housing of the latch 2 that are configured so that the housing of the latch is retracted in the housing of the body.
In a preferred embodiment, the latch locking mechanism has an adjustable stop 13 to adjust the depth of insertion of the detent element 4 into the body 1. The stop 13 is threaded and screwed into the body so that the mechanism can be adjusted to match with the depth of insertion of the latch 2 or to clear backlash in the mechanism resulting in loud or incorrect operation of the mechanism.
1. A latch locking mechanism comprising a stationary body (1), a latch (2) slidably attached to the body (1) and taking an extended position at which it extends from the body (1) and a retracted position when it retracts into the body (1), a spring (3) that drives the latch (2) out of the body, a detent element (4) that takes either an upper position or a lower position, and a lever (5) pivotally attached to the body (1) for releasing the detent element (4), said lever having an at least one arm (11) at one side and a flat pressure section (12) at the other side, characterised in that the detent element (4) has a catch (7) at one side and is pivotally attached to the body (1) at the other side, wherein the latch (2) is secured to the body (1) with an at least one pin (6) which is configured to engage the catch (7) of the detent element (4), wherein the catch (7) has a sliding surface (8) which forms an acute angle with a feed axis of the latch (2) allowing the detent element (4) to be turned to the upper position while the latch (2) takes the extended position, and wherein the catch (7) further has a locking surface (9) preventing the latch from being moved into the retracted position when the detent element (4) is in the lower position, and in addition, the detent element (4) has a driver (10) engaging with the at least one arm (11) of the lever (5) and is configured in such a way that upward movement of the least one arm (11) lifts the detent element (4) to the upper position thereby releasing the pin (6) and allowing the latch (2) to retract and the spring (3) to tension.
2. The latch locking mechanism according to claim 1, wherein the latch (2) is attached to the body (1) with two pins (6).
3. The latch locking mechanism according to claim 1 or 2, wherein the lever (5) has two symmetrical arms (11).
4. The latch locking mechanism according to claim 1, 2 or 3, wherein the body (1) has a housing fixed thereto and the latch (2) has a housing fixed thereto.
5. The latch locking mechanism according to claim 4, wherein the latch (2) housing is being retracted into the body (1) housing while the latch (2) is being retracted.
6. The latch locking mechanism according to any claim 1 to 5 wherein the detent element (4) has an additional spring which presses it to the lower position.
7. The latch locking mechanism according to any claim 1 to 6 wherein the spring (3) is either a pull spring or a pressure spring.
8. The latch locking mechanism according to any claim 1 to 7 wherein it additionally comprises an adjustable stop (13) for adjusting the depth of insertion of the latch (2) into the body (1).
710030
EP
22181125.0
WISNIOWSKI SPOLKA Z OGRANICZONAODPOWIEDZIALNOSCIA SPOLKAKOMANDYTOWO-AKCYJNA
1
DH
20221220
E05B
E05C
US
6045169
A
FROLOV GEORGE [US]
20000404
A
1-8
* column 3, line 47 - column 5, line 40 *
* figures 1-4 *
EP
0588248
A2
SCHULTE SCHLAGBAUM AG [DE]
19940323
A
1-8
* column 4, line 31 - column 7, line 45 *
* claim 3 *
* figures 3-10 *
US
6722710
B2
BANHAM PATENT LOCKS LTD [GB]
20040420
A
1-8
* column 4, line 44 - line 65 *
* column 6, line 26 - line 29 *
* column 8, line 5 - line 28 *
* column 10, line 18 - line 32 *
* figures 1-9 *
JP
2010144421
A
MIWA LOCK KK
20100701
A
1-8
* paragraph [0019] - paragraph [0028] *
* figures 1-9 *
US
4840050
A
GOTANDA MOTOHIRO [JP]
19890620
A
1-8
* column 3, line 4 - column 4, line 54 *
* figures 1-6 *
Antonov, Ventseslav
The Hague
20221208
US
6045169
A
20000404
EP
0894176
A1
19990203
US
6045169
A
20000404
WO
9739214
A1
19971023
EP
0588248
A2
19940323
AT
124105
T
19950715
DE
9212583
U1
19940127
EP
0588248
A2
19940323
US
6722710
B2
20040420
AT
278086
T
20041015
AU
780208
B2
20050310
CA
2373122
A1
20010920
CN
1380927
A
20021120
DE
60105920
T2
20060202
DK
1177360
T3
20041129
EP
1177360
A1
20020206
ES
2227131
T3
20050401
HK
1040271
A1
20020531
JP
4540916
B2
20100908
JP
2003527509
A
20030916
US
2003057713
A1
20030327
WO
0169018
A1
20010920
ZA
200108948
B
20021030
JP
2010144421
A
20100701
JP
5289925
B2
20130911
JP
2010144421
A
20100701
US
4840050
A
19890620
AU
595020
B2
19900322
FR
2597143
A1
19871016
GB
2188975
A
19871014
JP
H0765417
B2
19950719
JP
S62242080
A
19871022
US
4840050
A
19890620

REFERENCES CITED IN THE DESCRIPTION
This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

Patent documents cited in the description
- EP
2640914
B1
[0002]
- EP
3516135
B1
[0003]