EP3106593A1 - Lock with sound insulation - Google Patents

Abstract

The invention relates to a lock (1) for a wing of a door with a lock case (2) and at least one locking element (5) movably mounted in the lock case (2), which is switchable between a locking position and a release position by means of a lock mechanism (3) , In order to effect noise reduction in a structurally simple structure, it is proposed that an elastomer element (61, 62) is provided, which is either supported by a bolt tail (53) or arranged between a bolt head (57) and a locking device (4) to dampen the noises occurring during a closing and / or opening process.

Description

The invention relates to a lock for a wing of a door and / or a window according to the features of the preamble of claim 1.

Such a lock is from the DE 20 2007 016 556 U1 known. There, a mortise lock is described, which has a spring-loaded, so-called shooting trap. To reduce noise, the case on its oblique inlet surface or on the tail tail molded plastic parts. The molded parts form guide surfaces which prevent metal surfaces from striking metal surfaces when closing or opening the lock. Instead, metal comes into contact with the molded plastic part and the noise is reduced. The production of this castle is structurally relatively expensive, since incurred for the production of plastic parts relatively high tooling costs.

The DE 203 00 394 U1 shows a lock with a lock bolt, which has in the region of its bolt tail a guide pin with a circumferential rubber ring.

The EP 2 553 190 B1 shows a mortise lock with a guided in a lock housing lock bolt. A protective plastic element covers the gap between the lock bolt and the lock housing.

Object of the present invention is to provide a lock that has a reduced noise during closing and / or opening and is structurally simple in construction, preferably is inexpensive to produce.

This object is achieved with a lock according to the features of claim 1.

According to the invention, it is proposed that the locking head and / or an element of the locking head in the release position is mounted pivotably and / or tiltably about a tilting axis extending parallel to the locking forend and the pivoting movement and / or tilting movement of the locking head and / or an element of the locking head in the locking position is blocked by a locking device, and that between the locking device or a component of the locking device and the bolt head, an elastomer element is arranged for noise damping.

It is envisaged that the lock is usable for a wing of a door and / or a window and a lock case and at least one in the Lock case has movably mounted locking element. The lock case has a lock plate on its front. The locking element is switchable by means of a lock mechanism between a blocking position and a release position. The locking element has a bolt head, which engages through at least in a blocking position through an opening of the lock case to hold the wing in the closed position or to lock. For example, the locking head can reach through the forend or a cuff opening and cooperate with a frame-side arranged striking plate, preferably engage in an opening of the striking plate to hold the wing in the closed position.

Under a running parallel to the lock plate tilting axis is understood that the tilting axis extends parallel to the longitudinal direction of the lock plate. The tilting axis may face the locktip forward, i. away from the lock case, be arranged offset. Alternatively, the tilting axis can also be arranged offset into the lock housing or be movably mounted transversely to the lock forend. The latter can be realized for example in a shooting trap. In a conventional installation situation of a mortise lock, the tilting axis thus extends in the vertical direction.

It is provided in one embodiment that the bolt head acts when tilting on the locking device or a part of the locking device. That is, a rear surface of the bolt head when tilted comes into abutment with a front surface or blocking surface of the locking device. By placing an Elastromerelementes between these two parts, the resulting noise is effectively reduced. Another advantage results from the fact that an elastomer element is inexpensive and also in a simple way and Way can be exchanged. Thus, in case of repair, for example, after frequent use, the elastomeric element is hardened or worn, this can be exchanged in a simple manner. In particular, no expensive tools are needed to make an elastomeric element. Preferably, commercially available elastomeric elements can be used.

The lock can be designed as a built-in lock or mortise lock or as a body lock.

The wing may be formed as a passive wing or as an active wing. It can also be provided that the wing is a horizontally divided wing with at least two separately open wing parts. Such a split wing is preferably used in multi-purpose halls or theater stages. It has a walk-in wing part and another wing part, which can be opened for the transport of chairs or benches.

The lock mechanism may comprise a lock gear. The lock gear has a receptacle for a lock cylinder and / or a lock nut. About the lock cylinder and / or the lock nut or a key or a door handle, the lock gear can be operated, in particular the lock unlocked and / or locked. An electromotive drive or a spring-motor drive may also be provided for actuating the lock transmission. For example, the lock can be designed as an electromotive or spring-motor self-locking lock. The lock nut can be split to provide the lock with panic functions. Furthermore, the lock mechanism may comprise the locking device, to switch one or more locking elements between a release position and a blocking position.

In an advantageous embodiment, it may be provided that the bolt head is pivotally or tiltably mounted on a bolt tail of the locking element and the bolt tail another, around a round outer surface or a round outer contour of the bolt tail circumferentially wearing trained annular elastomeric element. The bolt tail preferably has a cylindrical section with a round cross section or a round outer contour. By the further elastomeric element is arranged circumferentially around a circular outer surface or outer contour of the bolt tail, this can be placed in a simple manner on the bolt tail and / or postponed or replaced.

The elastomeric element is elastic and stretchable. It can therefore also be placed over thicker portions of the bar tail, which have a larger size or a larger diameter than the round portion of the bar tail during placement. As a result, the lock according to the invention can be particularly easily mounted or maintained.

In one embodiment, it may be provided that the locking element carries a plurality, that is, two or more elastomeric elements. A first elastomer element can cooperate with a lock box fixedly arranged guide means and / or abutment means for noise damping. A second elastomer element may be arranged between the bolt head and a component of the locking device and / or the locking device itself in order to effect a noise damping by movements in the region of the bolt head. It is advantageous if both elastomeric elements are carried by the bolt tail, in particular when both elastomeric elements are formed circumferentially around a circular outer surface of the bolt tail. Thus, the same elastomeric elements can be used for noise damping. Thus, the production costs can be further reduced.

In one embodiment of the lock can be provided that the locking element is designed as a lock bolt. A lock bolt or Deadbolt is ausschlössbar from the lock housing on the lock mechanism and locked in the excluded state, a door leaf or window sash in its closed position. Alternatively, the locking element may be formed as a latch bolt. A latch latch has a first position in which the latch latch acts as a conventional firing latch and a second position further excluded from the latch housing by blocking the latch latch and acting as a latch latch.

In one embodiment, it may be provided that the locking element spring-loaded from the lock case is extendable and / or can be pressed against the force of a spring in the lock case.

In particular, it may be provided that the locking element is designed as a shooting trap and / or as a cross latch and / or as a dumping trap. A cross latch has a bolt head with two oppositely tiltably mounted elements for engagement in a frame-side strike plate. A dumping body has a bolt head with a tiltably mounted element for engagement in a frame-side strike plate. About a locking device, the tilting of the elements of the cross latch or the tilting of the element of the dumping can be locked to block the wing in the closed position.

In a structurally simple to implement variant can be provided that the bolt tail has a preferably cylindrical portion with a round cross-section.

In a compact, space-saving design can be provided that the spring is formed as a spiral spring and coaxially on the bolt tail, preferably on the cylindrical portion, is arranged.

In order to ensure a secure fit of the elastomer element, it can be provided that the bolt tail has a circumferential groove closed along an outer surface or outer contour of the bolt tail and the elastomer element is received in the groove.

In order to realize a structurally simple cross latch and / or tilting trap, it can be provided that the locking device has a slidably mounted on the bolt tail sleeve having a flat front surface, wherein the front surface bears against a flat rear surface of the bolt head. Pivoting and / or tilting of a cross latch and / or tilting trap can be effectively blocked and / or released via the two adjoining surfaces, without the surface pressure force thereby assuming disproportionately high values.

In particular, it can be provided that the front surface of the sleeve or the rear surface of the bolt head is parallel to the tilting axis of the bolt head.

In one embodiment, it may be provided that the spring, which is preferably designed as a compression spring and / or spiral spring, is supported, on the one hand, on a guide box-fixed guide means and / or abutment means and, on the other hand, on the displaceably mounted sleeve.

In order to ensure a blocking of the dumping or cross latch, it can be provided that the locking device comprises a locking lever in the lock box or pivotally mounted locking lever which blocks a displacement of the sleeve in the blocking position. In the release position, the bolt head can tilt about its tilting axis while pushing the sleeve against the force of the spring to the rear. In the locked position, the locking lever prevents axial displacement of the sleeve and thus prevents tilting of the bolt head about its tilt axis. Since the bolt head engages in the closed position of the door leaf or window sash in an opening of a frame-side strike plate, the wing is locked in the locked position of the cross latch and / or Kippfalle. Only after releasing or unlocking the cross latch and / or tilting trap, the bolt head can tilt again, so that the door can be opened. In the release position, the trap is, so to speak, soft-wired.

In order to allow opening of the wing even at a high preload, it may be provided in one embodiment that the locking lever has a roller which cooperates with a concave surface of the sleeve. By the role of the friction forces occurring between the sleeve and the locking device are significantly reduced, so that the door is safe to open even in high wind load or in deadlock situations.

In a cost-effective to manufacture embodiment can be provided that the elastomeric element is formed as an O-ring and consists of a rubber or a polyethylene or a silicone. For example, the elastomeric element may consist of a hydrogenated nitrile rubber which has very good mechanical properties. Also, a chloroprene rubber or an acrylate rubber may be provided as a material for the elastomeric member. Likewise, the elastomer element may consist of a polyethylene, for example a chlorosulfonated polyethylene or a silicone or a silicone rubber.

The invention will now be explained in more detail with reference to exemplary embodiments.

Fig. 1:

einen schematischen Aufbau des erfindungsgemäßen Schlosses;

Fig. 2a:

eine Draufsicht auf eine geräuschgedämpfte Kippfalle;

Fig. 2b:

eine Seitenansicht der geräuschgedämpften Kippfalle;

Fig. 2c:

eine Schnittdarstellung entlang der Linie B-B aus Fig. 2b;

Fig. 3:

eine Schnittdarstellung entlang der Linie A-A aus Fig. 2a.

Show it:

Fig. 1:

a schematic structure of the lock according to the invention;

Fig. 2a:

a plan view of a noise-damped Kippfalle;

Fig. 2b:

a side view of the noise-damped Kippfalle;

Fig. 2c:

a sectional view taken along the line BB Fig. 2b ;

3:

a sectional view taken along the line AA Fig. 2a ,

In the FIGS. 1 to 3 a lock 1 is shown, which is designed as a mortise lock for a door. How out FIG. 1 it can be seen, the lock 1 on a lock case 2, which includes a removable lock cover and a castle floor. The castle floor points Receiving points or storage points for individual components and / or components of the lock 1. At the front of the lock case 2, a lock plate 11 is arranged. The lock plate 11 extends in the direction of the longitudinal extent of the lock case. 2

In the lock 1, a lock mechanism 3 is arranged, which includes, among other things, a slide plate 31, a lock nut 32 and a lock cylinder receptacle 33. Furthermore, two locking elements 5 are arranged in the lock housing or in the lock case 2. In the in Fig. 1 shown lower position is a lock bolt 51 and at the overlying position a tilting trap 52 is arranged. About the lock mechanism 3, the locking elements 5, 51, 52 are actuated, or switched between a release position and a blocking position. In the release position, the lock bolt 51 is closed back into the lock case 2. In the release position, the tilting trap 52 is soft, that is, the case head 57 can, as in the FIGS. 2a to 2c shown to tilt freely parallel to the lock plate 11 axis 571.

To switch the lock in the locked position of the lock bolt 51 is excluded from the lock housing or lock case 2 by means of the lock mechanism 3. The lock bolt 51 has on its bolt tail on a pin which cooperates with a slide track of the slide plate 31. The slide track is inclined to the vertical, so that when the slide plate 31 is displaced linearly, the lock bolt 51 is excluded from the lock case 2 or retracted into the lock case 2. The slide track of the slide plate 31 has in the two end portions locking portions to the lock bolt 51 in its excluded or mechanically secured in its retracted into the lock housing 2 position.

In addition, in the locked position, the tilting trap 52 is locked, i. the tilting of the bolt head 57 is prevented. For this purpose, the tilting trap 52 is locked via the blocking device 4. From the slide plate for blocking or releasing the Kippfalle 52 a locking arm 43 is actuated. The locking arm 43 cooperates via a pin with a locking lever 41. The locking lever 41 is pivotally mounted in the lock case 2 and has at its end a locking roller 42 which rolls on a concave surface 561 of a sleeve 56.

The bolt tail 53 has a cylindrical portion. As in the FIGS. 2a to 2c shown, the sleeve 56 is mounted on the bolt tail 53 and on its cylindrical portion. The tilting trap 52 is axially displaceable against the force of a spring 55. As in Fig. 2c is represented by the arrow and the dashed lines, the bolt head 57 can be tilted about its vertically extending tilting axis 571. In this case, the sleeve 56 is displaced axially against the force of the spring 55 by the rear surface of the bolt head 57.

The blocking of the tilting trap 52 takes place by preventing the axial displacement of the sleeve 56 when the blocking arm 43 is locked by the locking roller 42. Then the sleeve 56 is rigid with its front surface 562 on the rear surface 572 of the bolt head. A relative movement between the bolt head 57 and sleeve 56 is thus no longer possible. The bolt head 57 is therefore in the in Fig. 2c Fixed position shown by solid lines.

As in Fig. 2c shown, the tilting trap 52 can be pressed against the force of the spring 55 in the lock housing 2. In the fixed position, the tilting trap 52 thus acts like a conventional shooting trap. When pressing the tilting trap 52 in the lock case 2, the spring 55 is compressed and the bolt tail 53 is moved relative to the lock housing fixed stop 35 to the rear, as indicated by the double arrow in Fig. 2c is shown.

The lock box fixed guide means 35 and the stop 35 has a round through hole, which is penetrated by the bolt tail 53. At its rear end, the bolt tail 53 has a widening serving as a bolt stop 54. This latch stop 54 limits the movement of the latch 52 forward, i. out of the lock case 2 out.

On the latch tail 53 is, as in Fig. 3 represented, the bolt head 57 about the tilting axis 571 pivotally mounted or tilted. When tilting the bolt head 57 this strikes with its back on the front surface 562 of the sleeve. This creates a metallic click. In order to prevent this metallic click, the bolt tail 53 has an elastomeric element 61 which is arranged between the bolt head 57 and the displaceable sleeve 56 of the locking device 4. The elastomeric element 61 is formed as an O-ring. The elastomeric element 61 is held in a groove arranged in the locking bar 53. The elastomeric element 61 prevents the metallic rear side 572 of the case head 57 from striking the metallic front 562 of the sleeve 56 directly. The elastomeric element 61 is formed as a buffer, which is elastic and effectively prevents the click sound during pivoting or tilting of the case head 57.

In order to dampen the noise upon impact of the bolt stop 54 on the lock box fixed stop 35, it is provided that the bolt tail 53 has a second elastomer element 52 in its end region. The elastomeric element 62 is disposed in a groove of the latch tail 53. It is arranged directly adjacent to the bolt stop 54, so that it prevents a direct impact of the bolt stop 54 on the lock box fixed guide means 35. The elastomeric element 62 acts as an elastic buffer or damper that prevents the metallic noise that would occur when the trap 52 is excluded.

The elastomeric members 61, 62 are formed as commercially available O-rings. To mount the case, these O-rings can be easily pushed onto the cylindrical portion of the latch tail 53 and fixed in the respective groove. The elastomer elements 61 and 62 are two identically constructed O-rings. These can be slightly stretched during assembly and listed on the cylindrical portion of the bolt tail 53. In the respective groove of the bolt tail 53, the O-rings fix themselves because of their elastic properties. For this purpose, it is provided that the diameter of the O-rings coincides with the diameter of the cylindrical portion of the bolt tail 53 reduced by the width of the groove. That the diameter of the O-rings is slightly smaller than the diameter of the cylindrical bar tail 53.

If maintenance of the lock 1 is pending, the elastomer elements 61, 62 can be exchanged in a simple manner and replaced by new elastomer elements 61, 62. In this way, both a cost-effective production of the lock 1 as well as a cost-effective maintenance or repair is guaranteed.

LIST OF REFERENCE NUMBERS

1

lock

11

lock face

2

Lock case, lock case

3

Lock mechanism, lock transmission

31

slide plate

32

lock follower

33

Lock cylinder intake

34

auxiliary latch

35

attack

4

locking device

41

locking lever

42

catch roller

43

locking arm

5

locking element

51

deadbolt

52

tilt latch

53

catch tail

54

latch stop

56

feather

561

concave surface

562

front surface

57

Bolt head / head case

571

tilt axis

572

rear surface

61

O-ring elastomer element

62

O-ring elastomer element

Claims (15)

Lock for a wing of a door and / or a window,
with a lock case (2) and at least one in the lock case (2) movably mounted locking element (5) which is switchable by means of a lock mechanism (3) between a locking position and a release position, and a bolt head (57) of the locking element (5) at least in the blocking position through an opening in the region of a forend (11) of the lock case (2) passes through to hold the wing in the closed position or lock,
characterized,
that the locking head (57) or an element of the locking head (57) in the release position about a parallel to the forend (11) extending tilting axis (571) is pivotally and / or tiltably mounted and the pivoting movement and / or tilting movement of the locking head (57) or an element of the locking head (57) is blocked in the blocking position via a locking device (4), and that between the Locking device (4) or a component (56) of the locking device (4) and the bolt head (57) an elastomeric element (61, 62) is arranged for noise damping. Lock according to claim 1,
characterized,
in that the locking element (5) has a bolt tail (53) and a one-piece or multi-part bolt head (57) and the bolt head (57) is pivotably or tiltably mounted on the bolt tail (53) and the bolt tail (53) supports the elastomer element (61, 62 ), which is in particular ring-shaped and / or is preferably formed around a circular outer surface or a round outer contour of the bolt tail (53) closed circumferentially. Lock according to one of claims 1 or 2,
characterized,
in that the bolt tail (53) is movably mounted via a guide means and / or stop means (35) arranged in the lock case (2) and carries an elastomer element (61, 62) which is closed around a round outer surface or a round outer contour of the bolt tail (53) is formed circumferentially and cooperates with the guide means and / or stop means (35) for noise reduction. Lock according to one of the preceding claims,
characterized,
that the locking element (5) spring-loaded from the lock case (2) is extendable and / or against the force of a spring (55) in the lock case (2) can be pressed. Lock according to one of the preceding claims,
characterized,
that the locking element (5) is designed as a latch bolt. Lock according to one of the preceding claims,
characterized,
that the locking element (5) is designed as a latch and / or a tilt latch (52). Lock according to one of the preceding claims,
characterized,
in that the bolt tail (53) has a section with a round, preferably cylindrical, cross-section. Lock according to one of claims 4 to 7,
characterized,
is arranged that the spring (55) formed as a spiral spring and coaxially mounted on the bolt tail (53). Lock according to one of the preceding claims,
characterized,
in that the bolt tail (53) has a groove running around closed along an outer surface or outer contour of the bolt tail (53) and the further elastomer element (61, 62) is received in the groove. Lock according to one of the preceding claims,
characterized,
in that the locking device (4) has a sleeve (56) mounted on the bolt tail (53) with a flat front surface (562), the front surface (562) bearing against a flat rear surface (572) of the bolt head (57). Lock according to claim 10,
characterized,
in that the longitudinal extent of the front surface (562) of the sleeve (56) or the rear surface (572) of the bolt head (57) runs parallel to the tilting axis (571) of the bolt head (57). Lock according to claim 10 or 11,
characterized,
that the spring (55) is supported on one side to a lock case fixed guide means and / or fixing means (35) and on the other hand, on the displaceably mounted sleeve (56) and acts upon the displaceably mounted sleeve (56). Lock according to one of the preceding claims,
characterized,
in that the blocking device (4) comprises a locking lever (41) mounted displaceably or pivotably in the lock case (2) and blocking an axial displacement of the sleeve (56) in the locking position. Lock according to claim 13,
characterized,
in that the locking lever (41) has a roller (42) which cooperates with a concave surface (561) of the sleeve (56). Lock according to one of the preceding claims,
characterized,
that the elastomer element (61, 62) is designed as an O-ring and consists of a rubber or a polyethylene or a silicone.

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