EP1130197B1 - Striker with noise reducing effect - Google Patents

Abstract

The edge plate (1) has a hollow cavity (2) for the catch-bolt of the lock mounted in the door. In front of the catch bolt, in the direction in which the door is shut, is a stop-edge (3) against which the catch bolt strikes when the door is shut. The stop-edge is in the form of an insert (4) made of material damping the noise of the striking surface. The insert is detachably fixed to a U-shaped cover (5) with a passage (6) for the catch bolt. A hollow cavity (7) containing a lock-bolt has another stop-edge (8) as part of the insert and made of sound-absorbent material with a passage(9) for the bolt.

Description

The present invention relates to a striking plate with a whisper effect. Strike plates according to the invention can be related to room or front doors as well any other doors.

Striking plates are known from the prior art in various forms. Known striking plates have in particular a latch receiving cavity or a bolt receiving cavity for receiving the lock latch or the lock bolt a door lock. They are screwed into the rebate cladding the door frame of a door mounted.

In the case of one-piece or integrally formed door frames, in particular for Steel frames for room doors, a separate striking plate is not required, but it a locking area integrated in one piece into the door frame is provided, which the Has latch receiving cavity or the bolt receiving cavity. The function the closing area of an integral door frame is the same as that a separate striking plate.

The rattling of incompletely closed doors is known. It will Door leaf pressed for example by drafts, causing the lock latch with her Sloping surface strikes the striking plate. Most of the time, the lock latch on this one Operation not pressed far enough into the lock to enter the trap-receiving cavity intervene. The consequence of this is a repeated striking of the lock latch to the striking plate. Since the lock latch and striking plate are mostly made of metal Materials are produced, a proportional arises with each striking process loud impact sound, which is perceived as annoying.

In addition, the annoying impact sound occurs even when a door from Hand is closed without pressing the doorknob far enough down and thereby pull the lock latch sufficiently far into the lock. in this connection the lock latch strikes the striking plate, is then pressed into the lock and finally jumps due to their spring preload in the Strike plate cavity of the striking plate.

From DE-A-24 45 834 an example of an insert for a one-piece or integrally formed door frame with a closing area known. In those there 3a and 3b, the insert has a trap receiving cavity for receiving a Lock latch of a lock mounted in a door. Furthermore is one Stop edge provided in the door closing direction (in Fig. 3a from right to left) is arranged in front of the latch receiving cavity and to which the lock latch thus strikes with the formation of a stop sound when the door is in Door closing direction falls. The trap receiving cavity and the stop edge Extensive use is in the interest of good noise insulation made of plastic manufactured. The noise insulation with separate striking plates enables known use not.

A similar insert in the form of a cleaning box is from DE-A-22 26 640 known. The plastic cleaning box has a stop edge for the Lock latch that reduces noise when the door is closed. A Noise reduction with strikers to be installed separately is also included this use is not possible.

From CH-A-663 818 an insert for integral door frames is known, the one Has trough shape. For the purpose of silencing the latch a protruding cam is provided inside the insert. A sound-absorbing stop edge to which the lock latch falls when the door closes This insert does not have the door closing direction.

It is therefore the object of the present invention to also be installed separately Strike plates minimize noise when striking the To ensure the lock latch on the striking plate.

This task is carried out with a striking plate Features of claim 1 solved. Further refinements of the invention result from the subclaims.

The striking plate for door frames according to the invention in particular has a latch receiving cavity to hold a lock latch made of a certain material a lock mounted in a door, whereby in the door closing direction there is a stop edge in front of the trap receiving cavity which strikes the lock latch with the formation of a stop sound when the Door closes in the door closing direction, and the stop edge is designed as an insert is and consists of a material or is coated with a material, which dampens the impact sound with regard to the material of the lock latch.

The choice of the material of the stop edge or the material of the The stop edge coating depends on the material of the lock latch. To note that the damping of the impact sound in the sense of the present Invention can also be achieved if the lock latch and stop edge or Edge coating are made of the same material. When choosing this Material is only important to ensure that when two parts hit each other no or no significant impact sound is produced from this material.

For example, it is preferred for lock latches made of metallic materials Plastic as material for the stop edge or the stop edge coating selected. The material pairings plastic / plastic are also conceivable as well as plastic / metal, the lock latch material being mentioned first.

According to the invention, it is sufficient to use only the stop edge as an insert train. The insert can either be clipped into the striking plate with a force fit and / or with the aid of other fastening means, for example screws be attached to the striking plate. Conventional striking plates, which according to the invention are to be converted, are in the area of their stop edges prepare enough space for the insertion of the as a stop edge functioning insert is present.

The insert not only has the stop edge itself, but also additionally the trap receiving cavity. Such an application can be releasably attached to a cover, which with a corresponding Trap receptacle opening is provided, so the stop edge comes in Latch receiving opening to lie that the lock latch only the stop edge and cannot touch the cover part itself. In the usually below the The cover part can be the latch receiving area of the latch receiving area be conventional, i.e. a latch receiving cavity not designed as an insert exhibit. The cover part itself can be made of a metallic Material, for example aluminum, made of plastic or a material Carbon fiber base exist. In particular, are nylon, polyamide, glass fiber or carbon fiber reinforced plastics conceivable. The surfaces of the cover can be galvanically treated, powder-coated or painted.

In addition to the noise reduction according to the invention, the so-called whisper effect, which by coordinating the material pairing of the lock latch / stop edge is achieved, the present invention has the advantage of a kind of shock absorber effect with himself. This shock absorber effect is caused by the material combination insert / cover part causes. For example, if the insert consists of a non-metallic one Material, such as plastic, and the cover made of metal dampen the use the impact of the lock latch against the cover part acting on the stop edge and thus compared to the entire door frame.

It is also advantageous not only the stop edge and the trap receiving cavity as an insert, but also the bolt receiving cavity to be provided together with a further stop edge on the insert. There is the additional stop edge made of the same material as that of the trap receiving cavity assigned stop edge or is coated with the same material. In this case, the cover part has a bolt receiving opening, in which the further stop edge when attaching the insert to the cover part comes to rest.

Does the insert cover the trap receiving cavity together with the associated stop edge as well as the bolt receiving cavity together with the associated, further stop edge, see above does the further stop edge only have a certain function if an attempt is made to close the door with the lock bolt extended. The invention Whispering then occurs with regard to striking the lock bolt on the further stop edge. Since doors with the lock bolt extended at most are closed accidentally, this effect only plays a role in practice subordinate role. Rather, with regard to the installation of the invention Striking plate achieved considerable flexibility. Depending on how the door is hung in the door frame and / or which door opening direction is provided , it can happen that the latch or bolt receiving cavity acts as such in one installation situation while in another installation situation the latch receiving cavity the function of the latch receiving cavity exercises and vice versa.

The stop edge and / or the further stop edge preferably has an in about a quarter-cylindrical surface. This ensures an unhindered Sliding movement of the slant of the lock latch along the stop edge. The However, the surface of the stop edge can also take a shape which one corresponds to a circular cylindrical surface area, which is less than a quarter of a Full circle extends. Other geometries, such as one, are also conceivable chamfered stop edge.

For the purpose of burglar protection, the striking plate according to the invention can also be used Can be attached to the door frame using additional securing means. For example can be used with a reinforcing plate, preferably made of metal connected, for example screwed, which are also on the door frame is attached. This attachment is also preferably carried out by screwing. Another way to prevent burglary is to use the reinforcement plate to be arranged on the cover part. The reinforcing plate can be integral or provided in one piece on the cover part or with the aid of fastening means, for example screws, to be connected to this. Instead of a compact one Reinforcing plate can also have several strip-shaped securing fingers on the cover part be provided, which at their connection points with the cover part can be cranked so that they are in the door closing direction in front of the plane of the actual cover part. Is the reinforcement plate or are the locking fingers integrally connected to the cover part, so they consist of the same Material like this. If they are provided as separate parts, they must do not consist of the same material as the cover part. In addition to metal comes as a material for the reinforcement plate or the locking fingers also plastic in Question.

The latch and / or bolt receiving cavity are in the door closing direction bounded at the front by a latch and / or a bolt receptacle wall, which is at least partially inclined so that the trap and / or the bolt receiving cavity at least in the latch or bolt entry direction partially rejuvenated. This ensures that the striking plate also then reliable locking of the lock latch into the latch receiving cavity enables when due to temperature and / or humidity fluctuations the ambient air door leaf curvatures occur within a certain tolerance. This effect is inherently from the German utility model 298 10 360.5 known.

The latch and / or the bolt receiving cavity can be in the latch or bolt entry direction be bounded by a bottom wall. This prevents that from through the latch receiving cavity or the latch receiving cavity Rebate cladding of the door frame can be viewed. To ensure that a lock bolt in its most extended closed position in the bolt entry direction can engage more in the bolt receiving cavity than it Would allow depth, the bottom wall is perforated along its circumference in such a way that it can be broken out by hand. The lock bolt can then move accordingly move far in the bolt entry direction and thereby the bolt receiving cavity enforce completely. The bottom walls are also conceivable omit the latch and / or bolt receiving cavity from the outset.

Fig. 1

eine perspektivische Explosionsdarstellung eines erfindungsgemäßen Schließblechs, umfassend das Abdeckteil und den Einsatz;

Fig. 2

eine perspektivische Ansicht eines erfindungsgemäßen Schließblechs in zusammengebautem Zustand;

Fig. 3

eine Ansicht des Abdeckteils gemäß Fig. 1 von vorne;

Fig. 4

eine Ansicht des Abdeckteils gemäß Fig. 3 von links;

Fig. 5

den Schnitt A-A in Fig. 3;

Fig. 6

den Schnitt B-B in Fig. 3;

Fig. 7

eine Ansicht des Einsatzes gemäß Fig. 1 von vorne;

Fig. 8

eine Ansicht des Einsatzes gemäß Fig. 7 von links;

Fig. 9

den Schnitt C-C in Fig. 7;

Fig. 10

den Schnitt D-D in Fig. 7;

Fig. 11

eine Ansicht des Einsatzes gemäß Fig. 1 von hinten; und

Fig. 12

eine Ansicht des Einsatzes gemäß Fig. 11 von links.

An embodiment of a separate striking plate according to the invention is described below by way of example with reference to the accompanying drawings. Show it:

Fig. 1

an exploded perspective view of a striking plate according to the invention, comprising the cover and the insert;

Fig. 2

a perspective view of a striking plate according to the invention in the assembled state;

Fig. 3

a view of the cover of Figure 1 from the front.

Fig. 4

a view of the cover of Figure 3 from the left.

Fig. 5

the section AA in Fig. 3;

Fig. 6

the section BB in Fig. 3;

Fig. 7

a view of the insert of Figure 1 from the front.

Fig. 8

a view of the insert of Figure 7 from the left.

Fig. 9

the section CC in Fig. 7;

Fig. 10

the section DD in Fig. 7;

Fig. 11

a view of the insert of Figure 1 from behind. and

Fig. 12

a view of the insert of FIG. 11 from the left.

Fig. 1 shows an inventive, separate striking plate 1 in an exploded view. The striking plate 1 comprises the metal cover 5 and the insert 4, which is an injection molded part made of plastic. The invention Whisper effect is thus in the embodiment shown with regard to such lock latch materials achieved which none when hitting plastic or generate only a small impact sound. This applies, for example, to Lock latches made of metal.

As can be seen in particular in FIGS. 1, 3, 5 and 6, the cover part 5 an elongated rectangular shape and a U-shaped cross section with proportionate short U-legs 10 and 21. It was manufactured using the deep-drawing process. The latch receiving opening 6 and the bolt receiving opening 9 have the same rectangular shape and are arranged in such a way that Fig. 1 and 5 left transition radius between the U-web 22 and the U-leg 21 run in or include this. In Fig. 1 there are also three Recognized countersunk holes 23 through which fastening screws, not shown reach through to fasten the striking plate 1 to the door frame. In 3, 4 and 5 are two bores 11 and 12 provided in the U-leg 10 to recognize which are used to hold the insert 4 securely in the U-profile.

The insert 4 can be seen in FIGS. 1 and 7 to 12. It is symmetrical to that 7 shown section line of the section D-D. The same applies to the cover part 5 with respect to a corresponding cutting line through the middle Hole 23. The insert 4 includes the trap receiving cavity 2 and the Bolt receiving cavity 7, both of which are cuboid. The in Fig. 11 shown bottom walls 19 and 20 of the trap receiving cavity 2 and of the bolt receiving ear space 7 can be omitted or along if necessary their respective circumference be perforated to break them out if necessary to be able to.

In Fig. 1, the stop edge 3 can be seen, which in the door closing direction according to arrow R is in front of the trap receiving cavity 2. Furthermore is the further Stop edge 8 shown, which also in the door closing direction R in front of the bolt receiving cavity 7 lies. The stop edge 3 surrounds together with the peripheral edges 24, 25 and 26 the rectangular opening of the trap receiving cavity 2. The peripheral edges 24, 25 and 26 and the stop edge 3 are in the Fig. 1 above the plane E, which is located in Figs. 8,9 and 12 Die Level E falls when the insert 4 is inserted into the cover part 5 at the level of inner or in FIGS. 5 and 6 lower surface of the U-web 22 together. The Dimension by which the peripheral edges 24, 25 and 26 protrude beyond the plane E corresponds essentially to the material thickness of the U-web 22 of the cover part 5. Due to the symmetry of the insert 4, the same geometrical relationships apply to the peripheral edges 27, 28 and 29 of the bolt receiving cavity 7.

Since the peripheral edges 24, 25, 26 and 27, 28, 29 in the manner described are raised compared to level E and the peripheral edges 25, 26 and 28, 29 in the If the surfaces of the stop edges 3 or 8 pass over, the peripheral edges fit and stop edges in the manner shown in Fig. 2 to the outer contour of the cover part 5 when the insert 4 is inserted into the U-profile of the cover part 5. As can be clearly seen in Fig. 2, the circumferential edges 24 to 29 and the sit Stop edges 3 and 8 flush in the latch or bolt receiving opening 6 or 9, so that they form part of the outer contour of the striking plate according to the invention 1 form.

When the striking plate 1 is assembled according to FIG. 2, it lies below the Stop edge 3 and the contact surface 30 shown in FIG. 9 on the one in FIG. 3 marked counter surface 31 of the cover part 5. To use 4 with a slight press fit in the latch receiving opening 6 or in the latch receiving opening 9, the dimension e shown in FIG. 9 can be a be chosen slightly larger than the dimension b shown in FIG. 5. This will achieved that the insert 4 non-positively in the latch or bolt receiving opening 6 or 9 is held.

As can be seen in FIG. 9, the stop edge 3 has a quarter circle Cross section on, so that the surface of the stop edge 3 quarter-cylindrical is shaped. The radii of the quarter-cylindrical surface are preferably in Range from 1 mm to 10 mm.

Furthermore, in FIG. 9 the angle of inclination α is the trap receiving cavity wall 18 recognizable. The width of the trap receiving cavity 2 tapers in Trap entry direction from top to bottom. Depending on the maximum depth of penetration Lock latch in the trap receiving cavity 2 can the trap receiving cavity wall over part of their height or, if necessary, over their entire height run inclined. The inclination α means that the lock latch also which are within a certain tolerance, still in the Trap receiving cavity 2 engages and can keep the door closed. With increasing Door leaf warping is always the front edge of the lock latch in Fig. 9 further up on the inclined trap receiving cavity wall 18.

To secure the insert 4 in the U-profile of the cover 5, the in Fig. 7, 9 and 11 to be recognized holding mandrels 13 and 14, which with their Holding projections 32 and 33 engage in the holes 11 and 12 and thereby secure insert 4 in the U-profile against falling out.

In the area of the two ends and between the trap receiving cavity 2 and the bolt receiving cavity 7 has the insert 4 substantially cuboid Wells 34, in each of which a cylindrical casting eye 35 with countersunk through hole 36 is located as shown in FIGS. 1 and 10. Fastening screws, not shown, run through the through bores 36 for fastening the striking plate 1 to the door frame. As shown in particular in FIGS. 11 and 12, the insert 4 has on it Underside underneath the depressions 34, three attachment lugs 15, 16 and 17 on. These protrude in the door closing direction R, i.e. 11 to the left in FIG in the same direction as the holding mandrels 13, 14, from the insert 4. Everyone Fastening projection 15, 16, 17 has a preferably all-round contact edge 37, 38, 39 on which down from the respective attachment lug 15, 16, 17 projecting. For the purpose of burglar protection, one not shown, made of metal or plastic existing reinforcement plate can be provided, which projecting projections has, which can be applied to the contact edges 37, 38, 39. In the system projections can be aligned with the through holes 36 Through holes are provided so that the reinforcing plate with the same fastening screws on the striking plate 1 or the insert 4 is held, which are used to attach the striking plate 1 to the door frame. Furthermore, the reinforcing plate may preferably be on its from that Locking plate 1 screwed to the door frame in the door closing direction R at the far end become.

In the assembled state, arises between those marked in FIG. 2 Material webs 40 of the cover part 5 and the trap receiving cavity wall 18 or the corresponding bolt receiving cavity wall, a groove-like cavity, which are filled with reinforcement strips made of metal or plastic can. As a result, the material webs 40 are forced into the door closing direction R complicates. Furthermore, a violent reaching behind the material webs 40 prevented with the help of burglary tools.

Claims (8)

1. Lock plate for door frames with

   a spring lock-receiving cavity (2) for receiving a spring lock of a lock mounted in a door,

   an impact edge (3) disposed in front of the spring lock-receiving cavity (2) in the door-closing direction (R) and which the lock spring hits, generating an impact noise when the door is slammed in the door-closing direction (R),

   a case (4) which forms the impact edge (3) and is made from or coated with a material which damps the impact noise, the case (4) incorporating the spring lock-receiving cavity (2) as well as the impact edge (3) and

   a cover part (5) with a spring lock-receiving orifice (6), the case (4) being detachably secured to the cover part (5) in such a way that the impact edge (3) fits in the spring lock-receiving orifice (6).
2. Lock plate as claimed in claim 1, characterised in that a lock bolt-receiving cavity (7) for receiving a lock bolt and another impact edge (8) are provided as integral parts of the case (4), the other impact edge (8) being made from said material or coated with said material and the cover part (5) having a lock bolt-receiving orifice (9), in which the other impact edge (8) fits.
3. Lock plate as claimed in claim 1 or 2, characterised in that the cover part (5) has a substantially U-shaped cross-section and at least one hole (11, 12) is provided behind the U-leg (10) lying to the rear in the door-closing direction (R) and the case (4) has at least one retaining pin (13, 14) which engages in the hole (11, 12).
4. Lock plate as claimed in one of the preceding claims, characterised in that the case (4) has at least one fixing shoulder (15, 16, 17) for attaching a reinforcing plate, by means of which the lock plate (1) is secured to the door frame.
5. Lock plate as claimed in one of the preceding claims, characterised in that the cover part (5) has at least one fixing tongue on its side lying to the rear in the door-closing direction (R), by means of which the lock plate (1) is secured to the door frame.
6. Lock plate as claimed in one of the preceding claims, characterised in that the impact edge (3) and/or the other impact edge (8) have a surface of a substantially quarter-cylindrical shape.
7. Lock plate as claimed in one of the preceding claims, characterised in that the spring lock- (2) and/or lock bolt-receiving cavity (7) is restricted towards the front in the door-closing direction (R) by a spring lock- (18) and/or lock bolt-receiving cavity wall, which is at least partially inclined (α) so that the spring lock- (2) and/or lock bolt-receiving cavity (7) at least partially tapers in the direction in which the spring lock or lock bolt is inserted.
8. Lock plate as claimed in one of the preceding claims, characterised in that the spring lock- (2) and/or lock bolt-receiving cavity (7) is restricted in the spring lock or lock bolt-inserting direction by a base wall (19, 20) which is perforated along its circumference so that it can be broken off and removed by hand.

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