DE541556C - Bolt latch lock - Google Patents

Description

In the case of the latch bolt lock protected by patent 466 562, the follower has three Arms, two of which act on the latch, while the third is against one Attachment of an auxiliary latch and thereby the bolt latch in the latch position with the door open secures, when slamming the door, however, is released from the auxiliary latch, so that the The latch bolt can move into the closed position.

According to the invention, this bolt latch lock is further improved in such a way that that the lower arm 'of the three-armed handle follower is with the door open with the approach the auxiliary trap anchored like a hook and that in the locking position the middle arm with a hook-shaped approach in a detent of the cooperating with the upper nut arm The approach of the main trap snaps into place and thus establishes it.

Locks of the present type are preferably used for vehicle doors, where it must be feared that the bolt trap under the influence of the permanent Tremors are driven back into the castle. Part of this retrograde movement will be the latch by engaging the hook-shaped end of the middle nut arm in a Latching of the latch is prevented, because the one provided with the locking hook medium nut arm, which can only perform a circular movement, the rectilinear one required for this Backward movement of the latch does not allow. Rather, this movement is just then possible if this nut arm has previously been disengaged from the detent is.

In the drawing, the invention is shown in an exemplary embodiment.

Fig. 1 shows the position of the handle follower with the door open, Fig. 2 with the door closed Door, Fig. 3 on a larger scale part of the door frame with the so-called strikers, Fig. 4 part of the closed door.

The latch h has a shoulder hf which protrudes into the path of movement of the handle follower arms b, d and, as shown in Figs. 1 and 2, is provided with a catch η into which the hook part d 'of the handle follower arm e swings when the door is closed (see Fig . Fig. 2) and in this way secures the bolt h in the door locked position. The downwardly directed arm r of the handle follower a also has a hook-shaped extension 1 ″ which, when the door is open, is inserted into the hook part 0 of the auxiliary latch ν (see Fig. 1) and thus holds the handle follower α in a position in which you Arm b. Locks the latch h in a partially retracted position (see Fig. 1). This hook-like anchoring of parts r and ν

Seems necessary, because if the two parts come together smoothly, it would be feared that 'the arm r pushes the auxiliary latch back into the lock under the influence of the two springs f and w , overcoming the weaker spring u.

When the door is open, the latch bolt is partially opened by the handle nut arm b resting against the shoulder h 'of the bolt latch h

ίο held in the retracted position (trap position), in that the hook-shaped extension r 'of the handle nut arm r falls into the hook part ο , which is pressed by the action of the spring ti of the auxiliary trap ν displaced against the arm r (see Fig. 1).

So that this coupling between the arm r and the auxiliary trap υ can take place, the latter rests downwards on a spring i and is thus passed through the wedge-shaped slot ζ

ao guided the bolt χ so that when the arm r slides over the edge of the auxiliary trap υ when the auxiliary trap ν is advanced, the latter yields appropriately and later, under the influence of the spring i , its hook part 0 can fall into the hook v 'of the arm r . When the door slams shut, the auxiliary latch ν slides over a path p attached to the door frame (see Fig. 3), which ends in a completely flat surface f. The latch h, on the other hand, slides over a path g that ends in the locking catch g ' , so that the auxiliary latch ^ is now pushed back into the lock by the path ft, ft' (see Figs. 2 and 4), releasing the follower arm r and the latch h, following the pressure of the spring f , can fall into the locking catch g '. Simultaneously, the lock nut is α by action of the spring w appropriately rotated, the arm d with its hook-shaped projection in the latching df η of the approach ¥ incident and the latch bolt in its locked position secures h (s. Fig. 2).

Claims (1)

Claim: Bolt latch lock with three-armed handle follower according to patent 466 562, characterized in that the lower arm (r) of the handle follower and the shoulder (0) of the auxiliary latch interlock like a hook in the open position of the door and that in the bolt position the middle arm (d) of the follower a hook-shaped projection (d ') snaps into a detent (n) of the projection of the main trap which cooperates with the upper nut arm and fixes it. For this purpose ι sheet of drawings