FI104199B - Door lock with a hook - Google Patents

Description

104199

'HAKATELLE DOOR LOCK - DÖRRLÄS MED EN HAKREGEL

The invention relates to a door lock equipped with a hook roller according to the preamble of claim 1.

The use of a hatching tent in door locks is known in the art. The hook tent can be rotatably supported on the lock body and thus rotatable in its locking position inside the counter plate in the door-10 frame, as disclosed, for example, in SE 463979 (WO 9100405). Such a solution is quite bulky in the longitudinal direction of the door. One known problem is also that the opening of the counter plate must be substantially large in the longitudinal direction of the door frame with respect to the cross-section of the hitch to enable it to be pivoted. The Mi-15, if the hatching axle is the only bolt on the lock, cannot prevent the door from being lifted out of its hinges as far as it would otherwise be possible. On the other hand, solutions based on the use of two separate hook members so that the members are rotatable in a locking position with respect to the axle are also known, as is evident, for example, from DE 425971. However, such solutions are quite complicated and bulky.

The object of the invention is to provide a new door lock locking structure with a hook axle which is simple, compact and reliable in its construction and from which the shortcomings of the known solutions have been eliminated.

The objects of the invention are achieved in the manner detailed in claim 1 and in the other claims. According to the invention, the hitch axle comprises a guide part which is movable linearly within the lock body and a separate hook part which is pivotally supported on its end. The hook member is configured to include a projection which, near the protruding end position of the ha-30 boiler, is cooperated with the lock body or the inner surface of the chest plate so that said inner surface causes said rotation of the hook member 2 104199 when moved to its locking position. The hook member is further dimensioned such that, in its fully protruding locking position, it fills the major portion of the counter plate opening in the longitudinal direction of the door frame, thereby preventing the door from being moved away from its hinges. The door lock thus obtained is simple, reliable and safe in structure. By using a separate rotatable claw part, the head of the hook can be moved linearly through the aperture of the face plate prior to rotation of the hook part, whereby the face of the face plate can be nearly the same size as the face of the breast plate. This allows the use of a hitching axle of considerable dimensions relative to the opening of the counter plate and thus achieves the objectives of the invention.

In practice, the hook member is dimensioned to fill at least more than 90% of the opening of the counter plate in the longitudinal direction of the door frame. Of course, the exact dimensioning also depends on the length of the hinge pins commonly used in doors.

15

Further, if the lock body is provided with a control member arranged to return the hook member to its original rotational position when moving the hook bar from its locked position to its neutral position, the return movement of the hook member can also be secured without spring force moving the hook bar into its lock position. Further, said guiding member can advantageously be arranged to control the hook member also during the linear movement preceding the rotation of the hook member, whereby all the steps of the movement of the hook member are precisely controlled.

Further, the lock body is preferably provided in a manner known per se with a plurality of disk deficiencies cooperating with the key. When the key-operated locking mechanism locking members are in the lock body itself, the entire door locking solution requires minimal space.

The invention will now be described, by way of example, with reference to the accompanying drawings, in which: FIG. 1 shows a side view of an embodiment of a door lock according to the invention with the lock frame open Fig. 3 illustrates section IV-IV of Fig. 3, - Fig. 5a shows a movable movement of the locking member in the locking body of Fig. 3; and Fig. 5b is a side view of the hook portion of the hook axle.

In the drawings, 1 denotes a door lock lock body attached to the door 2 and 1 5 provided with a breast plate 3 and a hook ax 4. The chest plate 3 has an opening 3a for the hooks 4.

The hook tongue 4 comprises a guide part 5 movable within the lock body 1 and a hook part 6 rotatably supported therein by means of a pivot pin 7. The parts comprise openings 5a and 20 for the pivot pin 7, respectively. To control the linear movement of the hitching axle 4, the lock body has a guide groove 8 for the pivot pin 7 and a second guide groove 9 for the locking pin 5b in the guide part. The locking pin 5b also cooperates with the disc damaging package 10. 1 2 3 4 5 6

The shifting of the hitching axle 4 between the free position shown in Fig. 1 and the locking position shown in Fig. 3 is effected by a lock key 11 acting on the guide surfaces 5c and 5d of the guide portion of the stream 3. The prerequisite for the transfer is the use of the right key 11 of the lock 4 so that the key 11 arranges the plate defects 10 5 by the guiding surfaces 10a therein against the force of the spring 12 in a position where it is possible to move the lock pin 5b Disc damage. 10 are controlled by lock pins 13 and 14.

4, 104199

The hook part 6 of the hitch axle is configured to include a projection 6b having a guide surface 6c arranged to cooperate with a control member 15 in the lock body to control the linear movement of the hitch axle.

5

With the door closed at the door lock, the door frame 16 has a stop plate 17 secured to the door frame by screws 18. The stop plate 17 has an opening 17a and a protective housing 17b for the hook bar 4, as will be more clearly shown in FIG. As the key 11 moves the hook bar 4 forward from the position of Fig. 2 to its protruding, locking position, shortly before the position of Fig. 3, the guide surface 6d of the hook portion 6b contacts the inner surface 1a of the lock body. Depending on the structure of the lock body chosen, this counter surface may be part of the body of the lock body itself or the inner surface of the breast plate 3. As a result, the hook member 6 begins to pivot about the pivot pin 7, whereby the guide surface 6f continues to rotate with the inner surface 1a until the hook member 15 is in the position of Figure 3. The hook member 6e of the hook member 6 is then clearly below the lower edge of the opening 17a ready to engage the inner surface 17c of the counter plate 17. However, the lower edge of the chest plate opening 3a prevents the hook member 6 from rotating further.

As shown in more detail in FIG. 4, in the locking position of FIG. 3, dimension B of hook member 20 is selected such that hook member 6 overlaps main body opening 17a at opening 17a. , thus preventing such a door breaking attempt. 1 2 3 4 5 6

When the hook bar 4 is moved with the key 11 from the locking position 2 · in Fig. 3 to the neutral position in Fig. 1, the guide surface 6c of the projection 6b of the hook member 6b the hook member 6e allows the hook 5 axle 4 to be moved completely out of the opening plate 17a of the counter plate into the lock body 1.

6

Claims (5)

A door lock with a casing-shaped reading housing (1) provided with a front plate (3), belonging to a hook rule (4; 5,6) which is slidable between a reading and free position by the key (11) of the reading rule, is arranged to cooperate with an end plate (17) in a door frame (16), so that in its reading position the hook rule is inserted through an opening (17a) in the end plate and its hitch portion (6) is rotated towards an inner surface ( 17c) of the end plate, characterized in that the hook rule (4; 5,6) comprises a linearly displaceable separate guide part (5) which is continuously located inside the reading housing (1) and at whose end a separate hook part (6) is rotatably supported. ), that the hook portion (6) is configured to comprise a protrusion (6b) which is disposed adjacent to the protruding end position of the hook portion (4; 5.6) for cooperation with an inner surface (1a) of the casing or front plates, such that said inner surface (1a) provides said rotation of the hook portion (6) as the hook rule (4; 5,6) is displaced in its reading 1. and, in addition, the hook portion (6) is dimensioned such that in its fully protruding reading position it covers the main portion of the opening plate (17a) in the longitudinal direction of the door frame (16), thereby preventing the door (2) from sliding from its hinges. . 7 104199 Door lock according to claim 1, characterized in that the hook part (6) is dimensioned to cover the opening (17a) in the end plate in the longitudinal direction of the door frame (16) to at least over 90%. 5 Door lock according to claim 1 or 2, characterized in that the reading housing (1) is provided with a control means (15) arranged to return the hook part (6) to its original rotational position when the hook rule (4; 5,6) is displaced from its loaded position to its free position. 10 Door lock according to claim 3, characterized in that said control means (15) is arranged to control the hook part (6) even during the linear movement of the hook part (6) which precedes the rotation of the hook part. 15 Door reading according to any preceding claim, characterized in that the reading housing (1) is provided in a known manner with a number of reading discs (10) interacting with the key (11).