EP1350911A2 - Handle-actuated lock - Google Patents

Abstract

A push-lever operated door lock is inserted in a matching recess in a doorframe. The lock components are assembled and fitted within a plastic housing (12) incorporating especially a planetary gear (24) coupled to the cylinder.

Description

The invention relates to a handle operated lock, especially mortise lock, with a plastic existing lock housing with lock base.

A mortise lock is known from DE 299 20 504 U1 in which the lock housing made of plastic consists. Such a lock has the essential The advantage that it is inexpensive to manufacture, a small one Assembly effort required and is easy.

From DE 15 53 413 and from US 5,524,941 is also a lock with a plastic lock case known.

EP 0 576 787 discloses a door lock with a Planetary gear known. Furthermore, DE 299 04 930 a lock case for door locks known, the is at least partially made of die cast. At the Functional parts are molded onto the lock base, such as supporting axles for gears, counter gears for gears, Spacer sleeves, fastening bolts. The counter toothing for Gears enable simple construction e.g. of Planetary gear by adding the missing ones Gears.

Starting from DE 299 20 504 U1, the invention is the Task based on a lock of the type mentioned to develop in such a way that this high clamping forces can transmit and especially not only with one Pusher but can also be operated with a key.

This task is done with a lock of the type mentioned Art solved according to the invention in that in the Lock housing a planetary gear for one Lock cylinder is used.

The main advantage of the lock according to the invention is that locking functions are now not only exclusively via the handle or a follower but also carried out via the locking cylinder can be because of the locking cylinder initiated closing forces by means of the planetary gear can be translated such that e.g. a bar can be brought forward, a trap withdrawn and Driving rods can be driven. By suitable Choice of gears of the planetary gear can be optimal Gear ratios can be achieved without that The lock housing is damaged.

Another advantage is seen in being independent from the backset of the lock the dimensions within the Planetary gear remain unchanged because of this Planetary gear as a separate component in the lock case is used. This allows for the closing function important tolerances are kept small and it becomes a optimal gear run within the planetary gear maintained. For the planetary gear is within the Lock housing provided an installation space that all Backset is kept the same size. The planetary gear has in turn cones or depressions, which in corresponding openings or projections in the castle floor or intervene in the lock ceiling.

In a further training it is provided that the Planetary gear has a gear housing in which the gear parts are arranged. By this measure is ensures that the planetary gear as independent manageable element can be used without its properties from the respective lock housing depend.

The gear housing with a housing cover is preferred closed, the housing cover made of plastic, is made in particular from transparent plastic. This has the main advantage that the Planetary gear visual checks are possible, e.g. the Lubrication or grease filling or the wear of the Check transmission parts or order a Perform a functional check. For this, the Gearbox cover can no longer be removed, but there are simple visual controls through the transparent Housing cover possible. To transmit high forces To be able to, the housing cover made of a glass fiber reinforced plastic.

According to a preferred embodiment, this is Gear housing made of metal, in particular of die casting, manufactured. Such a gear housing can be very high Absorb and transmit forces and is due to the low wear extremely durable. You can also Tolerances are reduced to a minimum so that the Gearbox run of the individual gear parts low-noise, is smooth and smooth.

In a further development of the lock according to the invention provided that the lock housing with a stop for the rotary movement of a follower is provided. there a first stop limits the rotary position for the maximum working position of the follower. This has the essential advantage that at maximum rotated Do not press the return spring as far as it will go, i.e. until their block position, what their Life would decrease considerably. The stop is arranged so that the follower immediately after the Retraction of the trap starts at the stop, the Return spring is still in the elastic range.

A second stop preferably limits the rest position of the Follower. This will damage the bearing the handle follower avoided if the door on the handle improperly raised, which is often the case when the Door for repair or maintenance purposes from the Fishing is lifted. Then the trigger nut is supported on second stop, and there will be storage as well other components of the lock, e.g. the removable top, relieved.

According to the invention, the trigger nut is within the two Stops rotatably mounted. Through the attacks the rotational movement to the desired range of rotation of the Pushers limited.

The force is applied to the stops via a radially protruding nose on the circumference of the trigger nut is provided and on the lock housing fixed stop is applied. The trigger nut and nose are preferred Made in one piece and consist of a high-strength Material, especially die-cast.

Further advantages, features and details of the invention result from the following description, in which with reference to the drawing a particular preferred embodiment is described. there can the shown in the drawing and in the Description and features mentioned in the claims each individually or in any combination be essential to the invention.

Fig. 1:

eine Draufsicht auf eine Ausführungsform des erfindungsgemäßen Schlosses bei abgenommenem Gehäusedeckel;

Fig. 2:

eine Draufsicht auf ein Wechseloberteil;

Fig. 3:

eine Draufsicht auf das leere Schlossgehäuse;

Fig. 4:

eine Draufsicht auf ein Planetengetriebe bei abgenommenem Getriebegehäusedeckel; und

Fig. 5:

den Getriebegehäusedeckel.

The drawing shows:

Fig. 1:

a plan view of an embodiment of the lock according to the invention with the housing cover removed;

Fig. 2:

a plan view of an interchangeable upper part;

Fig. 3:

a top view of the empty lock housing;

Fig. 4:

a plan view of a planetary gear with the gear housing cover removed; and

Fig. 5:

the gearbox cover.

1 shows an embodiment of an overall with 10 designated lock, which is made of plastic existing lock housing 12 with a lock base 14 (Fig. 3). In the housing 12 are a trap 16 and Latch 18 slidably mounted. Also located in Lock housing 12, a follower 20, a drive rod 22 and a planetary gear 24.

In Fig. 1 the lock 10 is in its rest position shown, in which the trap 16 of a Leg spring 26 is held so that it from the Lock housing 12 protrudes. The latch 18 is in that Lock housing 12 withdrawn and closes flush with a lock cuff 28.

Only for the sake of completeness is one in FIG Interchangeable upper part 30 shown, the pivot bearing 32 of the handle nut 20 is penetrated and which one Has driver 34, which on a trap tail 36th attacks.

To fix and fix the planetary gear 24 3, the lock housing 12 three receiving openings 38, 40 and 42, in which pin intervene that protrude from the planetary gear 24. The Planetary gear 24 in turn has a gear housing 44, which is made of die cast and on which the pins are molded on. In the gearbox 44 all transmission parts are housed, so that Planetary gear 24 as a separately manageable component is trained. The gear housing 44 is one transparent, plastic housing cover 46 locked. Are through this housing cover 46 the gear parts are recognizable and can therefore wear and functionality are checked. Furthermore is through the housing cover 46 for lubrication necessary grease filling of the planetary gear 24 controllable.

Fig. 3 shows the receiving and pivot bearing 48 for the Handle nut 20, which two radially projecting lugs 50 and 52 (Fig. 1). The nose 50 engages spring-loaded reset pin 54 on the follower 20 pushes into the rest position. The nose 50 is on one second stop 56 in one piece on the lock housing 12 is molded. In this position, the nose 52 protrudes in the Essentially vertically upwards and has one Distance to a first stop 58, which is also is integrally formed on the lock housing 12. Will the Then turn the follower nut clockwise the nose 52 is approached the first stop 58 until the Nose 52 abuts against this. This will make the rotation the trigger nut 20 stopped, and the maximum Angle position of the handle has been reached. This will prevents the reset pin 54 from Return spring 60 is compressed until it stops.

As already mentioned, the second stop 56 holds the Handle nut 20 in the rest position, so when improper Actuation of the handle both the handle follower and other components, e.g. the removable top 30 Damage can be spared. Such improper The push button is usually actuated when the door on the handle is lifted to e.g. from the Lift fishing.

In summary, it can be said that the lock 10 according to the invention not only by means of a Handle and the follower 20 can be operated but also key-operated, the Closing movement of the locking cylinder via Planetary gear 24 on further components of the lock 10, the bolts 18 and the drive rod 22 are transmitted, the closing movement and the closing forces by the Planetary gear (24) can be translated. Because of the Die-cast gearbox 44 can be very high forces are transmitted without the plastic existing lock housing 12 is damaged.

Claims (12)

Handle-operated lock, in particular mortise lock, with a plastic lock housing (12) with a housing base (14), characterized in that a planetary gear (24) for a locking cylinder is inserted into the lock housing (12). Lever operated lock according to claim 1, characterized in that the planetary gear (24) has a gear housing (44) in which the gear parts are arranged. Handle operated lock according to claim 2, characterized in that the gear housing (44) is closed with a housing cover (46). Handle operated lock according to claim 3, characterized in that the housing cover (46) consists of plastic. Handle operated lock according to claim 4, characterized in that the plastic is transparent. Handle operated lock according to claim 4 or 5, characterized in that the plastic is reinforced, in particular glass fiber reinforced. Handle operated lock according to one of claims 2 to 6, characterized in that the gear housing (44) consists of metal, in particular die-cast. Handle-operated lock according to one of the preceding claims, characterized in that the lock housing (12) is provided with a stop (56, 58) for the rotary movement of a handle follower (20). Handle-operated lock according to claim 8, characterized in that a first stop (58) limits the rotational position for the maximum working position of the handle follower (20). Handle-operated lock according to claim 8 or 9, characterized in that a second stop (56) limits the rest position of the handle follower (20). Handle operated lock according to one of claims 8 to 10, characterized in that the follower (20) is rotatably mounted within the two stops (56, 58). Handle-operated lock according to one of claims 8 to 11, characterized in that the handle follower (20) has at least one radially projecting nose (50, 52) which bears against the stop (56, 58) fixed to the lock housing.

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