EP3553260B1 - Striker insert with day position for conditional release of a lock striker plate of a door-locking mechanism - Google Patents

Description

The present invention relates to a latch insert, also referred to in technical jargon as a latch replacement piece, which can be installed in a conventional strike plate of a door and by means of which the latch of a door lock mechanism can be released without the latch of the door lock mechanism having to be released by means of a key or by operating a door handle must be withdrawn or actuated.

A generic trap insert is, for example, from US 2014/0 159 395 A1 known. A comparable trap insert is also based on the U.S. 4,181,338 A emerged.

For such a conditional release of the latch of a door lock mechanism, for example in front doors of apartment buildings or in doors of shops, electrically operated door opener inserts are often used, the locking function of which can be overridden by means of a lever, but in this unlocked state the door is prevented from being opened unintentionally, for example Gusts of wind is still secured. The door can be pushed open or pulled open without actuating the lock latch, provided the door opening force is great enough.

However, such electrically operated door opener inserts are not only relatively expensive, but also require due to their size, in particular on whose electromechanical unlocking devices can be traced back to special cutouts on the door frame in order to be able to accommodate the door opener insert.

The invention is therefore based on the object of creating a latch insert for installation in a strike plate of a door for the conditional release of a latch of a door lock mechanism, which has the smallest possible installation depth, so that no complex millings are required on the door frame or on the door frame.

This object is achieved with a latch insert with the features of claim 1 and in particular in that the maximum angle by which the counter latch can be pivoted starting from the blocking position in the direction of the conditional release position is predetermined so that the contact surface of the counter latch is in the conditional Release position is pivoted with respect to the locking position to such an extent that the contact surface is suitable to come into contact with the lock latch in the assembled state of the latch insert even in the conditional release position.

At this point it should be noted that the movement and directional information used here relate to the installation state of the latch insert in a door frame or a door frame. In particular, for example, the preposition “in front of” relates to a position with respect to the assembly assembly of the latch insert that faces the door opening of the door frame, as applies equally to the position indication “front”. In contrast, the preposition "behind", for example, relates to a position in relation to the assembly assembly that is located on the side of the assembly assembly opposite the door opening, as applies equally to the position specification “rear” or “rear”.

The latch insert according to the invention thus has, similar to an electrically operated door opener insert, a locking position in which the counter latch can be locked in order to secure the lock latch in the latch insert, whereby the door can be held in the closed position if an attempt is made to open the door without Actuation of the lock latch to push or pull. Equally, the counter latch of the latch insert according to the invention has a conditional release position in which the counter latch represents no or only a conditional obstacle for an extended lock latch.

The conditional release position of the counter latch is characterized by the fact that, unlike in the locked position, the contact surface of the counter latch does not run parallel to the door plane of the closed door, but is pivoted at an acute angle with respect to this plane and thus inclined to the door plane of the closed door runs. In the conditional release position, the contact surface thus represents a run-up slope for the lock latch on which it can ride if an attempt is made to open the door without actuating the lock latch when the counter latch is unlocked. With such a door opening attempt, the lock latch and in particular its free end comes into contact with the inclined contact surface of the counter latch and is pressed back into the lock case by this, provided that the opening force exerted on the door is large enough.

In contrast to an electrically operated door opener insert, in the case of the latch insert according to the invention, the counter-latch of the lock latch does not completely escape when a corresponding force is exerted on the counter-latch via the door or the lock latch; Rather, the counter latch of the latch insert according to the invention deviates from the lock latch when the door is opened only to such an extent that the counter latch or its contact surface forms a run-up slope in accordance with the explanations given above for the lock latch what is responsible is that when you try to open the door, the lock latch gives way to the counter latch of the latch insert.

Since the counter latch therefore only has to be pivoted by a relatively small maximum angle with respect to its locking position, the installation depth of the latch insert can be kept small, since no space is required behind the assembly assembly into which the counter latch is pivoted, as is the case with conventional electrically operated door opener inserts the case is. The latch insert according to the invention consequently has a small installation depth, so that no additional millings are required on the door frame to accommodate the latch insert.

Since the latch insert according to the invention does not have any electromechanical unlocking devices and doors equipped with it can basically always be opened when the counter latch is unlocked or in its daytime position, provided the door opening force is large enough, the latch insert is particularly suitable, for example, for doors of shops, as these can usually only be locked at night, whereas during the day it is desirable to keep the door unlocked in its closed position against unintentional opening such as gusts of wind.

Preferred embodiments of the trap insert according to the invention will now be discussed below. Further embodiments can emerge from the dependent claims, the description of the figures and the drawings.

Thus, according to one embodiment, it is provided that the specified maximum angle by which the counter latch can be pivoted to a maximum is between 10 and 30 °, preferably between 11 and 25 °, and particularly preferably between 12 and 18 °. In particular, the maximum angle mentioned can be about 15 °, including 15 °. According to the invention, it was therefore recognized that even relatively small angles of inclination of the contact surface of the counter latch can be sufficient to split the door opening force into two force components, one of which acts parallel to the direction of movement of the translational degree of freedom of movement of the lock latch and which is large enough to counteract any spring - and to push back frictional forces into their retracted position.

According to the invention, the assembly assembly comprises a base body, referred to here as a base plate, by means of which the latch insert can be attached to a strike plate of a door and in particular to its rear side. Here, the mating latch extends both in the locked position and in the conditional release position in front of the rear of the base plate. The base plate or the base body thus forms the rear delimitation of the latch insert, beyond which the counter latch protrudes towards the rear, neither in the locked position nor in the released position. The latch insert can thus be attached to a strike plate flush with the surface via the base plate, so that no additional millings have to be provided on the door frame, for example to accommodate the counter latch in the conditional release position.

In order to be able to keep the dimensions of the latch insert according to the invention small in the direction of the door plane of the closed door, it can also be provided according to a further embodiment that the base plate has a recess which receives a rear section of the counter latch. The counter latch can therefore extend with its rear section into the base plate, whereby the dimensions of the latch insert in the direction of the door plane of the closed door can be kept small.

According to a further embodiment it can be provided that the pivot axis of the counter latch is located in front of the rear of the base plate, by means of which the latch insert can be attached to a strike plate of a door. In contrast to this, in conventional electrically operated door opener inserts, the pivot axis of the counter latch is located behind the strike plate, which is at the expense of the installation depth.

In particular, the installation depth of the latch insert according to the invention can be kept small according to a further embodiment in that the counter latch has a rounded edge on its rear side, which in the assembled state faces the hinge side of the door, with the counter latch also preferably having a non-rounded edge on its rear side which faces the opposite hinge side of the door in the assembled state. If a counter-latch designed in this way is pivoted in the direction of its conditional release position starting from its blocking position in which the contact surface extends in the direction of the door plane of the closed door, the counter-latch and in particular the rounded edge on the back of the counter-latch dips differently than at an electrically operated door opener insert, in which the counter latch is formed by an angle profile which is articulated in the area of the free end of one of its two legs, not through the back of the base plate into the door frame. For this purpose, the rear edge of the counter latch, which faces the hinge side of the door in the assembled state, can be rounded, since otherwise, and especially when the rear section of the counter latch is received by a recess in the base plate, there would be the risk that the rear edge of the counter latch, which faces the hinge side of the door in the assembled state, comes to lie behind the rear of the base plate when the counter latch is pivoted into its conditional release position.

According to the invention, the mounting assembly includes a support bracket that can be attached to a front side of the base plate and that forms a flange at two opposite ends, which protrudes from the front side of the base plate when the support bracket is attached to the base plate. The counter trap extends between the two flanges and is pivotably supported by them between the locked position and the conditional release position. In particular, the carrier clamp can be attached to the base plate in different discrete mounting positions for the purpose of fine adjustment of the latch insert, for which purpose the carrier clamp can have at least one elongated hole through which a fastening element extends into the base plate.

So that the counter-latch, starting from its locked position, cannot be pivoted further than the specified maximum angle in the direction of its conditional release position, the assembly assembly and in particular its support bracket can form a stop with which the counter-latch and in particular a non-rounded rear edge thereof in the conditional release position can get into plant.

As already mentioned above, the counter latch can be locked in its blocking position, for which purpose a corresponding locking mechanism can be provided according to a further embodiment. This locking mechanism can in particular comprise a locking slide which can be manually displaced parallel to the pivot axis of the counter latch and which forms at least one locking section such as a locking lug, which in the locked position of the locking slide comes to lie in front of a counter locking section such as a counter locking lug, which or which is formed on a rear edge of the counter latch facing the opposite hinge side. Preferably, the locking section on its rear side and / or the counter locking section on its front side can have a run-up slope for the other locking section or counter locking section. Because the at least one locking lug of the locking slide of the locking mechanism comes to lie in front of the opposing locking lug in the locked position, the opposing locking lug of the opposing latch collides with the locking mechanism in the locked position Locking nose of the locking slide when a torque is exerted on the counter-latch when attempting to open the door via the lock latch, whereby the counter-latch cannot be pivoted into its release position and rather is locked in its blocking position.

It is true that the counter latch can be freely pivoted in the unlocked position or in the day position of the locking mechanism between the locked position and the conditional release position, which means that there is no return spring or other elastic return means by means of which the counter latch, starting from its conditional release position, is back into their locked position is pushed. Rather, the maximum angle through which the counter latch can be pivoted is so small that the lock latch is secured in the latch insert essentially without play, regardless of whether the counter latch is in its locked position or in its conditional release position.

However, in order not to have to manually pivot the opposing latch back into its locked position, starting from its conditional release position, before the locking slide for locking the opposing latch can be pushed into its locked position, in which the locking lug of the locking slide comes to rest in front of the opposing locking lug of the opposing latch the locking lug and / or the counter locking lug form the already mentioned run-up slope, since this can ensure that the locking slide can be pushed into its locked position even when the counter latch is in its conditional release position, without this resulting in a There is a collision between the locking nose and the opposing locking nose; rather, due to the run-up bevel formed on the locking lug and / or the opposing locking lug, the opposing locking lug and thus the opposing latch are automatically pushed back into their locking position when the locking slide is pushed into its locked position, although the opposing latch is in its conditional release position.

Fig. 1

eine perspektivische Explosionsdarstellung eines erfindungsgemäßen Falleneinsatzes zeigt;

Fig. 2

eine Draufsicht auf den Falleneinsatz der Fig. 1 im zusammengebauten Zustand mit verriegelter Gegenfalle zeigt;

Fig. 3

eine Draufsicht auf den Falleneinsatz der Fig. 1 im zusammengebauten Zustand mit entriegelter Gegenfalle zeigt;

Fig. 4

eine Längsschnittdarstellung des Falleneinsatzes der Fig. 3 gemäß der Schnittführung D-D zeigt;

Fig. 5

eine Längsschnittdarstellung des Falleneinsatzes der Fig. 2 gemäß der Schnittführung E-E zeigt;

Fig. 6

eine Querschnittsdarstellung des Falleneinsatzes der Fig. 2 gemäß der Schnittführung A-A zeigt; und

Fig. 7

eine Querschnittsansicht des Falleneinsatzes der Fig. 3 gemäß der Schnittführung B-B zeigt.

In the following, the invention will now be described purely by way of example with reference to the drawings, in which:

Fig. 1

shows an exploded perspective view of a trap insert according to the invention;

Fig. 2

a top view of the trap insert of Fig. 1 shows in the assembled state with locked counter latch;

Fig. 3

a top view of the trap insert of Fig. 1 shows in the assembled state with unlocked counter latch;

Fig. 4

a longitudinal sectional view of the trap insert of Fig. 3 shows according to the section line DD;

Fig. 5

a longitudinal sectional view of the trap insert of Fig. 2 shows according to the section EE;

Fig. 6

a cross-sectional view of the trap insert of Fig. 2 shows according to the section line AA; and

Fig. 7

a cross-sectional view of the trap insert of FIG Fig. 3 shows according to the section BB.

Fig. 1 shows a perspective exploded view of the latch insert 10 according to the invention, in which the individual components of the same can be clearly seen in their entirety: the latch insert 10 comprises a base plate 14 and a support bracket 16 that can be attached to it by means of screws 34, which together a mounting assembly 12 for attaching the latch insert 10 to a striking plate of a door, not shown here. The latch insert 10 further comprises a counter latch 20 pivotably supported by the assembly assembly 12 as well as a locking slide 46 and a leaf spring 54, the locking slide 46 serving to lock the opposing latch 20 in its locking position, as will be explained in more detail below.

Like the one in particular Fig. 1 can be removed, the base body, referred to here as the base plate 14, has two reinforced fastening sections 60 with fastening openings 62 formed therein at opposite ends of the base plate 14, in which, starting from the front of a strike plate to which the latch insert 10 is to be attached, two are not screws shown can be screwed in. A thinner plate section 64 extends between the two reinforced fastening sections 60 and forms a recess 28 and a bulge 30 extending therefrom on the side facing the hinge side of the door in the assembled state.

On its front side, the plate section 64 has a corrugated surface 32, which is used to be able to attach the carrier clamp 16 for the purposes of fine adjustment of the latch insert 10 in different discrete mounting positions on the base plate 14, for which the carrier clamp 16 on its rear side a corrugated surface 32 Has complementary corrugation. The support bracket 16 is fastened to the base plate 14 by means of the two screws 34 which extend through elongated holes 44 which are formed at opposite ends of the support bracket 16. The screws 34 are screwed into fastening openings 62 which are formed in the plate section 64 of the base plate 14 so that the support bracket 16 can be braced with the base plate 14 and in particular its plate section 64 by means of the screws 34.

Again Fig. 1 can also be removed, the support bracket 16 forms a flange 18 at its opposite ends adjacent to the elongated holes 44, which protrudes from the front side 26 of the base plate 14 when it is attached to the base plate 14. The two flanges 18 are used for the rotatable mounting of the opposing latch 20, for which purpose it has a pin 36 at its opposite ends, each pin 36 engaging in a U-shaped recess 68 which extends into the same from the rear of the respective flange 18 extends into it. When the support bracket 16 is fastened to the base plate 14, these U-shaped openings 68 are closed by the plate section 64 of the base plate 14 so that the counter latch 20 is securely secured to the assembly assembly 12 of the fastening plate 14 and support bracket 16.

As in particular the cross-sectional views of Figures 6 and 7 can be removed, the counter latch 20 can be worked out from a profile with a rectangular cross-section, in which not only the two front edges of the counter latch 20, but also the rear edge 70 of the same, which faces the hinge side of the door in the assembled state, are rounded. The other rear edge 72 of the counter latch 20, on the other hand, which faces the opposite hinge side of the door in the assembled state, is not rounded.

Like the synopsis of the Figures 6 and 7 can also be seen, the counter trap 20 is between the in the Fig. 6 shown locking position and in the Fig. 7 The conditional release position shown is pivotably supported, namely by a predetermined maximum angle which is 15 ° here, as shown in FIG Fig. 7 is noted. The maximum pivotability or the maximum angle is limited by two stop surfaces 40, 42 which are formed on the inner sides of the two flanges 18. In the in the Fig. 6 The blocking position shown here is the contact surface 22 of the counter latch 20 with which the lock latch the door comes into contact in order to keep the door in its closed position, with the stop surfaces 40 in contact (see also Fig. 1 ). In contrast, in the Fig. 7 The conditional release position shown, the rear end of the contact surface 22 is in contact with the stop surface 42 (see also Fig. 1 ), which is angled at an angle of 195 ° with respect to the stop surface 40. The rear edge 72 of the counter latch 20, which faces the opposite hinge side of the door in the assembled state, is therefore not rounded so that the rear end of the contact surface 22 can come into contact with the stop surface 42 over the full area.

Like that Figures 6 and 7 can also be taken, the counter latch 20 is both in the blocking position according to FIG Fig. 6 as well as in the conditional release position according to Fig. 7 in front of the rear side 24 of the base plate 14. More precisely, the rear section of the counter latch 20 extends into the recess 28 which is formed in the same along the edge of the base plate 14. Due to the fact that the rear edge 70 of the counter latch 20, which faces the hinge side of the door in the assembled state, is rounded, it is itself in the pivoted release position according to FIG Fig. 7 the counter latch 20 exclusively in front of the rear side 24 of the base plate 14, so that no additional millings or the like are required in the door frame to accommodate the latch insert.

To the counter trap 20 in the in the Fig. 6 To be able to lock the locking position shown, the latch insert 10 comprises the previously mentioned locking slide 46, which is sandwiched between the plate section 64 of the base plate 14 and a cap section 74 of the support bracket 16, which connects the two flanges 18 of the support bracket 16 to one another, in the longitudinal direction of the counter latch 20 Is slidably arranged. For this purpose, a small actuating lever 76 protrudes from the locking slide 46 and extends through an opening in the cap section 74 extends, so that the locking slide 46 can be operated manually via this lever 76.

Again Fig. 1 can be removed, this locking slide 46 has three locking lugs 48 on its side facing the hinge side of the door. In a corresponding manner, three counter locking lugs 50 are formed on the rear section of the counter latch 20 on its contact surface 22 facing the opposite hinge side (see FIG Figures 3, 4 and 5 ), which come to lie in the bulge 30 of the base plate 14 in the blocking position of the counter latch 20. In the in the Fig. 4 By contrast, the opposing locking lugs 50 of the opposing latch 20 come to lie in the distances between the locking lugs 48 of the locking slide 46 in the conditional release position of the counter latch 20 shown. In the in the Fig. 4 The unlocking position of the locking slide 48 shown here can thus be pivoted freely between its locking position and the conditional release position. In the in the Fig. 5 The locking position shown, however, come to rest the locking lugs 48 of the locking slide 46 in front of the counter locking lugs 50 of the counter latch 20, whereby this is secured or locked in the locking position.

Like the one in particular Fig. 4 can also be removed, the locking lugs 48 on their rear side and the counter locking lugs 50 on their front side each form a run-up bevel 52 with which the respective run-up bevel 52 of the other nose 50, 48 can come into contact. Therefore, the counter trap 20 is located according to the Figures 4 and 5 in its conditional release position, it is not necessary first to manually pivot the counter latch 20 back into its blocking position in order to be able to lock the counter latch 20 by means of the locking slide 46; Rather, the locking slide 48 can be moved into its locking position in the conditional release position of the counter latch 20, since here the run-up bevels 52 of the locking lugs 48 on the run-up bevels 52 of the counter locking lugs 50 run up and thereby push the same backwards, whereby the counter latch 20 is automatically pivoted into its blocking position.

However, if the locking slide 48 is in its unlocked position, the counter latch 20 can freely move between its locking position according to FIG Fig. 6 and their conditional approval Fig. 7 be pivoted, in which the contact surface 22 has a certain inclination. If, therefore, an attempt is made to open the door with the locking slide 46 unlocked without actuating the lock latch, the counter latch 20 is initially moved by the lock latch from its locking position into its conditional release position ( Fig. 7 ) pivoted. If the door opening force applied here is large enough, the free end of the lock latch rides on the now inclined contact surface 22 of the counter latch 20 and is pushed back or pushed back by this. As in the locked position, the counter-latch 20 also represents a certain obstacle for the lock latch in the conditional release position, which can, however, be overcome with a correspondingly high door actuation force, since in the conditional release position the contact surface 22 of the counter-latch 20 serves as a run-up slope for the lock latch. which evades the latch when the door is actuated accordingly.

In order to be able to reliably hold the locking slide 46 both in its locking position and in its unlocking position, a leaf spring 54 is sandwiched between the cap section 74 of the support chamber 16 and the locking slide 46, in which a latching cam 56 is impressed, which is used to secure the locking slide 46 can come into engagement in one of its two positions with corresponding latching openings 58 which are formed in the locking slide 46.

List of reference symbols

10

Trap use

12

Mounting assembly

14th

Base plate / body

16

Beam clamp

18th

flange

20th

Counter trap

22nd

Contact area

24

Back of 14

26th

Front of 14

28

Recess

30th

Recess

32

Corrugated surface

34

Screws

36

Cones

38

openings

40

Stop surface

42

Stop surface

44

Long hole

46

Gate valve

48

Locking nose

50

Counter locking lug

52

Approach slope

54

Leaf spring

56

Locking cams

58

Locking opening

60

Fastening section

62

Mounting hole

64

Plate section

68

U-shaped recess

70

rounded back edge

72

non-rounded rear edge

74

Cap section

76

lever

Claims (12)

1. A latch element (10) for the installation into a strike plate of a door for a limited release of a latch bolt of a door lock mechanism, comprising:

   - an installation assembly (12) for installing the latch element (10) at a strike plate of a door; and

   - a counter latch (20) which is pivotably supported by the installation assembly (12), between a blocked position and a limited release position, about an axis oriented in parallel with the pivot axis of the door, and indeed by a predefined maximum angle, with the counter latch (20) having a contact surface (22) which is configured to come into contact with a latch bolt of the door in the blocked position in the installed state of the latch element (10) in order to hold the door in its closed position;

   wherein the maximum angle is predefined such that the contact surface (22) of the counter latch (20) in the limited release position is pivoted so far with respect to the blocked position that the contact surface (22) is suitable for also coming into contact with the latch bolt in the limited release position in the installed state of the latch element (10); and
   wherein the installation assembly (12) comprises a base plate (14) which is configured for attachment to a strike plate of a door and which has a front side (26) and a rear side (24), wherein, both in the blocked position and in the limited release position, the counter latch (20) does not extend beyond the rear side of the base plate (14),
   characterized in that
   the installation assembly (12) comprises a support clamp (16) which can be attached to a front side (26) of the base plate (14) and which forms a respective flange (18) at two oppositely disposed ends, said flange (18) projecting from the front side (26) of the base plate (14) in the state attached to the base plate, with the counter latch (20) extending between the two flanges (18) and being pivotably supported by them between the blocked position and the release position.
2. A latch element in accordance with claim 1,
   characterized in that
   the predefined maximum angle lies between 10 and 30°, preferably between 11 and 25°, and particularly preferably between 12 and 18°, and with in particular the maximum angle amounting to approximately 15°.
3. A latch element in accordance with claim 1,
   characterized in that
   the base plate (14) has a recess (28) for receiving a rear section of the counter latch (20).
4. A latch element in accordance with claim 1 or claim 3,
   characterized in that
   the pivot axis of the counter latch (20) is located in front of the rear side (24) of the base plate.
5. A latch element in accordance with at least one of the preceding claims,
   characterized in that
   the counter latch (20) has a rounded edge (70) at its rear side which faces the hinge side of the door in the installed state; and/or in that the counter latch (20) has a non-rounded edge (72) at its rear side which faces the hinge side of the door in the installed state.
6. A latch element in accordance with claim 1,
   characterized in that
   the counter latch (20) has a respective pin (36) at its mutually oppositely disposed ends, with each pin (36) engaging into an opening (68) of the respective flange (18) and being rotatably supported therein.
7. A latch element in accordance with at least one of the claims 1 or 6,
   characterized in that,
   for the purpose of adjusting the latch element (10), the support clamp (16) can be attached to the base plate (48) in different discrete installation positions, for which purpose in particular the support clamp (22) has at least one elongate hole (44) through which a fastening element (34) extends into the base plate (48).
8. A latch element in accordance with at least one of the claims 1 to 7,
   characterized in that
   the support clamp (16) forms at least one abutment (42) with which the counter latch (20), and in particular a non-rounded rear-side edge (72) of the counter latch (20), comes into contact in the limited release position.
9. A latch element in accordance with at least one of the preceding claims,
   characterized in that
   the latch element (10) comprises a locking mechanism by means of which the counter latch (20) can be locked in the blocked position.
10. A latch element in accordance with claim 9,
    characterized in that
    the locking mechanism comprises a blocking slide (46) which is in particular manually displaceable in parallel with the pivot axis of the counter latch (20) and which forms at least one blocking section (48) which, in the locked position of the blocking slide (46), comes to lie in front of a counter blocking section (50) which is formed at a rear-side edge of the counter latch (29) facing the side opposite the hinge.
11. A latch element in accordance with claim 10,
    characterized in that
    the blocking section (48) has a run-on slope (52) for the respective other section (50, 48) at its rear side and/or the counter blocking section (50) has a run-on slope (52) for the respective other section (50, 48) at its front side.
12. A latch element in accordance with at least one of the claims 9 to 11,
    characterized in that,
    in an unlocked position of the locking mechanism, the counter latch (20) is freely pivotable between the blocked position and the limited release position.

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