DE383643C - Lock with bolt and latch - Google Patents

Description

The subject of the invention is a lock with bolt and latch, its use is particularly convenient with a high level of security.

In the drawing, as an exemplary embodiment, the subject of the invention is both a from the outside as well as from the inside to be opened door lock explained, namely show

Fig. Ι to 5 the interior of the lock in each a side view with different positions of the moving parts,

Fig. 6 is a section along line 6-6 of Fig. I, seen from above,

Fig. 7 a section along line jj in Fig. I, seen from above,

Fig. 8 a section along line 8-8 of Fig. I, seen from the right,

Fig. 9 is a side view of the bolt, Fig. 10 is a rear view of the bolt, Fig. 11 is a section along line 11-11 of Fig. 9, seen from the left,

AbIi. 12 is a side view of another Single part,

Fig. 13 is a front view of this part, seen from the right,

Fig. 14 is a section along line 14-14 of Fig. 12, seen from the left, and

Fig. 15 is a side view of the key. The lock has a lock case A provided ^{with a cover plate A 1} , in which the latch B and the bolt C are guided displaceably parallel to one another. The case B, which is bevelled in the usual way at its front end (see Fig. 6), is provided at its rear end with an attachment b ¹ which is guided ^{on a bolt α 2} attached to the lock case A and parallel to the direction of movement of the case. The front part a ^{3 of} the bolt ar is offset from the rear, the approach b ^{1 of} the trap serving as a guide parts of the bolt and is surrounded by a helical spring D , the front end of which is guided on the bolt part α ³ approach b ^{2 of} the trap is present. The rear end of the spring D rests on a on the bolt part a? guided movable abutment E, which seeks to apply under the pressure of the spring D to a fixed abutment formed by the stronger rear part of the bolt α ^2.

The bolt C (see. Particularly Figs. 9 to 11) is provided at its rear end with a cutout extending in its longitudinal direction, so that fork arms c ¹ are formed at its upper and lower ends. These are set off in a step-like manner in cross-section in the manner shown in Fig. 11, that at their inner edge on the bottom of the lock case; A side facing longitudinal strips r and on their outer edge longitudinal strips c ³ arise. With the bars c ² , the bolt C is guided on a crossbar α ⁴ attached to the bottom of the lock case A , to which it is pressed by a leaf spring F attached to the lock case. In the open position of the bolt (Fig. 2 to 5), in which the lower fork arm c ¹ rests against a stop a ^{: i} attached to the lock case, the leaf spring F engages in a semicircular detent c ^{4 of} the lower fork arm ^{c 1} . while in the closed position of the bolt (Fig. 1) it lies behind the rear end of the fork arm. Between 'the longitudinal strips c ³ on the bolt' C a sliding piece G (see. In particular Fig. 12 to 14) is guided, which serves for a purpose explained below. Like the bolt C, this is provided with a cutout running in its longitudinal direction, so that fork arms g ¹ arise at its upper and lower ends. The two fork arms g ¹ are provided on the side facing the bottom of the lock case with lugs g ² , which are guided in the cutout of the bolt located between the fork arms c ^{1 of the bolt.} The upper fork arm g ¹ is also provided with an upwardly directed ^{extension g s} , which is shown in FIG

*) The following have been named as inventors by the patent seeker:

Karl Wieser in Werden, Ruhr, and Wilhelm Passiepen in Essen.

38364a

the space between the movable abutment E and the approach b ^{1 of} the trap B engages.

To retrieve the trap B , two handles H and 7, which can be rotated independently of one another about the same axis, are provided in the form of a knee , of which one, H, is arranged on the outside and the other, /, is arranged on the inside of the door. The ίο handle H engages with a square pin h ¹ (see especially Fig. 6 and 8) in a socket H ² stored in the lock case and the handle / with a square pin i ¹ in a socket P (Fig. 6 and 8). The nut H- is provided with a crank pin / ι ³ , which is in engagement with one fork-shaped arm K of an angle lever mounted in the lock case. The other arm Ji ^{1 of} the angle lever K ₁ K ¹ engages in the space between the movable abutment E and the ^{extension g 3 of} the slider G. The arrangement is made so that in the rest position of the handle H ₁ when the latch B is simultaneously in the closed position (Fig. R, 3 and 4), the arm K ¹ both on the movable abutment E and on the approach g ^s and this is applied to the approach b ^{1 of} the trap B. As a result, on the one hand, by turning the handle H from the rest position (Fig. 1) in the direction of the arrow χ by means of the angle lever K, K ^1, both the latch B and the slider G can be pushed back against the action of the spring D ( Fig. 2) and on the other hand, by rotating the handle H from the rest position against the direction of the arrow χ , the abutment E - also against the action of the spring D - can be advanced.

The nut P is also provided with a crank pin i ³ (see especially Fig. 6), which is in engagement with the one fork-shaped arm L (Fig. 2, 5 and 6) of an angle lever. The other arm L ^{1 of} the angle lever L, L ¹ , which is independently rotatable about the same axis as the angle lever K ₁ K ¹ , engages in the space between the movable abutment E and one on the shoulder b ^{1 of} the trap B. Bar & ³ (see especially Fig. 7), which has the same thickness as the extension g · ^{3 of} the sliding piece G opposite it. The arrangement here is such that when the handle is in the rest position / when the latch B is simultaneously in the closed position (Figs. ¹ , 3 and 4), the arm L 1 both on and against the movable abutment E the bar b ^{s of} the approach b ¹ rests (Fig. 7).

As a result, in the same way as when adjusting the hand! have H - on the one hand, by rotating the handle 7 from the 'rest position (Fig. 1) in the direction of the arrow χ with the intermediation of the angle lever L ₁ L ^1, the latch B is pushed back against the action of the spring D (Fig. 5) and on the other hand by one from; the rest position against the j direction of the arrow s occurring rotation of the handle 7, the abutment E are advanced.

The handles H and 7 serve not only to retrieve the case B ₁ but also to adjust the bolt C. For this purpose, the arrangement is made so that the. upper longitudinal bar c ^{3 of} the bolt C in such a way both in the path of the approach b ^{2 of} the case B and in the path of an approach e ^{1 of} the movable abutment E that the bolt in the backward movement of the case B caused by the handle H or 7 by their approach b ^{2 is} also pushed back and is also pushed forward in the feed movement of the abutment E caused by the handle H or 7.

For the bolt C , a pawl M (see especially Figs. 8 and 4) is provided, which is rotatably mounted on the bottom of the lock case A ^{by means of a pin α 6.} On the pawl M a spring formed by a thin steel wire is m ¹ (s. Especially Fig. 4 and 8) attached, which rests on the lower side wall of the lock box and the pawl M in the locking position (Fig. 1, 3 and 5) to keep looking. In this position, the pawl is with a nose m " (see especially Fig. 4), when the bolt is in the closed position (Fig. 1), behind a projection c ⁵ arranged on the upper fork arm c ^{1 of} the bolt, thus preventing If, on the other hand, the bolt is in the open position, the nose m ² lies in the same position of the latch in front of the shoulder c ⁵ (Figs. 3 and 5), so that the bolt prevents movement in the sense of closing is assured. in the disengaged position (Fig. 2 and 4), the nose m ² of the pawl in the amount of between the two fork arms of the bolt c ¹ located cut-out, so that it does not prevent movement of the bolt. are the pawl m three independently of this and of each other around the axis of the pin a ° rotatable pawls N (see especially Fig. 8), which are intended to fix the slider G. On each pawl N is a spring formed by a thin steel wire r n ¹ attached, which rests on the lower side wall of the lock case and the pawl in the locked position (Fig. 1 and 3 to 5) to keep looking. In this position the pawls N lie

this when the slider G is in its front limit position (Fig. ι and 3 to 5), each with a nose n ² behind the approach g ^{2 of} the upper fork arm g ^{1 of} the sliding piece G and secure this against a backward Shift, which at the same time the handle H is secured against rotation in the direction of the arrow χ. In the disengaged position (Fig. 2) the lugs are n ² ₁ so that they no longer prevent the pawls JV in the amount of ¹ g cutout located between the two fork arms of the slider G a rearward displacement of the slider.

Both the pawls JV and the pawl M protrude like the tumbler pins of a key lock into a slot-shaped keyhole cv , which is provided in a block α ⁸ attached to the bottom of the lock case and is only open to the outside of the door. In the keyhole d ¹ is defined by a foreseen in the cover plate A ¹ slot ff ⁹ (Fig. 8) is a 'plug-in key P (s. Especially Fig. 15) switched on' feasible, the shaft on one side with. 'is provided with a suitable longitudinal profile p ¹ for the simultaneous disengagement of the pawls N and JIi.

The lock case is also provided below the block α ⁸ with a keyhole α ¹⁰ (Fig. 8), which is located in the bottom of the lock case towards the inside of the door. Through the keyhole a ¹⁰ , the socket wrench P can be inserted into a slot q ^{1 of} a pawl Q which is slidable with an elongated hole q ² on the pin α ⁶ and which lies between the pawl M and the bottom of the lock case and is intended to disengage the pawl M. , on this cross approach q ^{3 is} provided. The slot q ¹ is located in a projection q * provided on the pawl Q , which a spring R seeks to keep in contact with the underside of the block a ^s. The bottom surface q ^T ' (Fig. 8) of the upwardly open slot q ¹ is beveled at its end facing the bottom of the lock case. The socket wrench P has on the opposite side of the longitudinal profile ρ ^1! Side of its shaft a 'longitudinal profile with a bevel /> ² , which is intended to j contact the bevel of the bottom surface q''. The pawl Q can therefore be pressed down against the action of the spring R by inserting the socket wrench P into the slot q ^x. The pawl Q then holds the pawl M in the disengaged position by means of the projection q ³ (Fig. 4).

In the following description of the use of the door lock described, the state of the lock explained in Fig. 1 should be assumed, in which the latch B and the bolt C are in the closed position and the key P has been withdrawn. The bolt C is secured against a movement in the sense of opening by the locking pawl JIi which engages behind its approach c ^a and, in turn, prevents the opening movement of the trap ^{, since its upper longitudinal strip c 3} lies directly behind the approach b ^{2 of the trap.} Neither the inner handle J, which is connected to the latch by the lever arm L ¹ , nor the outer handle H, which is connected to the latch by the lever arm K ¹ , can be rotated in the direction of opening, ie in the direction of the arrow x. The outer handle H is secured against rotation in the sense of opening not only by the locking mechanism M, c ' provided for the bolt C but also independently of this by the locking mechanism JVj g ² provided for the slider G , since the approach g ^s of the slider G fixed by the locking mechanism JV, g ² lies in the path of the lever arm K ^{1 that} can be adjusted by the handle H.

To open the lock from the outside, the key P is first ^{inserted through the slot α 9} (Fig. 8) of the cover plate A ¹ into the keyhole ^{a 7} in such a way that the longitudinal profile p ^{1 of} its shaft is on top. Through the longitudinal profile p ^{1 of} the key shaft, both the pawls JV and the pawl M are brought into the disengaged position (Fig. 2), so that now both the slider G and the bolt C are movable and thus also the locking of the handle H. is canceled. Now the handle H is rotated in the direction of the arrow χ. As shown in Fig. 2, the lever arm K ¹ , which is constantly in positive connection with the handle H, is directly connected to the attachment g ^{3 of} the slider G and with the attachment b ^{1 of} the trap B through the intermediary of ^{the attachment g 3} is in a frictional connection, against the action of the spring D on the one hand the slide G and on the other hand the latch B pushed back. The trap also takes the bolt with it by means of its attachment & ² , which is located immediately in front of the longitudinal strip c ^{3 of} the bolt C , so that both the trap and the bolt come into the open position (Fig. 2). The door can now be opened by exerting pressure on the handle H in the axial direction (Fig. 6). If the handle H is released after the door has been opened , the latch B returns to the closed position (x \ bb. I) under the action of the spring D , with its attachment b ¹ on the one hand the sliding piece G through the intermediary of the attachment g ^s and on the other hand the

B8364B

Lever arm · K resting on the attachment g ^a and the handle H , which is inevitably connected to it, returns to the initial position according to Fig. ι. The bolt C remains in the opening position while the slider G is advanced on it into its initial position, since it is held in place by the leaf spring F ^{which has come into engagement with the catch c 4} at the end of the opening movement. After the door has been opened and the handle H has returned to its initial position, the key is removed. The pawls therefore return to the locked position, namely the pawls N, as Fig. 3 shows, with their nose n ² again behind the approach g ^{2 of} the upper fork arm g ^{1 of} the slider G, so that this is fixed and therefore a Rotation of the handle H in the direction of the arrow χ prevented. The pawl M now lies with its nose m ^{2 in} front of the approach c ^{D of} the bolt C and therefore secures the bolt against displacement in the sense of closing. The handle H can therefore not be rotated against the direction of the arrow χ , since the abutment E would have to be moved by the lever arm K ¹ , but a displacement of this abutment by the upper longitudinal bar c ^{s of} the locked bolt C, the rear end of which is immediately before approach e ¹ is prevented. Despite the locking of the handle H , the door can be closed by pulling on the handle as a result of the bevel of the latch at its front end (Fig. 6), as the latch C is opened by a force exerted on its front end can be pushed back at any time independently of the handle H. When the door is closed again, the lock is in the state shown in Fig. 3. In this state, in which only the latch is in the closed position, the = lock remains during the time in which the door is repeatedly opened and closed, e.g. B. during the daytime. Since the handle H is immobile as long as the key is removed, as explained above, the locking mechanism N n ² , g ² must first be disengaged by inserting the key before opening the door. Should the door, e.g. B. for the night, are completely closed, so after the introduction of the key and the resulting disengagement of the locking mechanism N n ² , g ² and M m ² , c ^5, the handle H is rotated against the direction of the arrow χ. Here, the lever K ^1, which is inevitably connected to the handle, moves the abutment E forward, which in this case pushes the bolt back into the closed position through the intermediary of the shoulder e ^{1 resting on the upper bar c 3 of} the bolt. The leaf spring F emerges automatically from the catch c ^{4 of} the bolt and, when the bolt has reached the closed position, lies behind the rear end of the lower fork arm c ^{1 of} the bolt. If you now pull out the key, the initial state shown in Fig. 1 is reached again.

If the door is to be opened from the inside in this state of the lock, the key is inserted through the keyhole a ¹⁰ into the slot q ^{1 of} the pawl Q in such a way that the longitudinal profile p ^{1 of} its shaft is at the top. By 'located at the bottom of the key shank taper p ^2, the pawl Q is in this case pressed against the action of the spring R so far down that the projection located at the pawl Q Q ^A on the pawl M meets Urid that for the bar C intended locking mechanism M m ² , c ⁵ disengages. The inner handle / can now be rotated in the direction of the arrow χ (Fig. 5 '), the lever arm L ¹ , which is in positive connection with the handle / and rests on the bar b ^{3 of} the trap B , counteracts the action of the Fed'er D pushes back. The trap in turn pushes the bolt into the open position through the intermediary of the shoulder b ^{2 resting on the upper longitudinal strip c 3 of} the bolt. If you now release the handle, it is returned to the initial position by the spring D together with the latch B , while the bolt remains in the open position. The lock is then in the state illustrated by FIG. If the key is now withdrawn, the approach q ^{s of} the pawl Q releases the pawl M , which therefore returns to the locking position 'and lies with its nose m ^{2 in} front of the approach c' of the bolt C, so that this against a movement in the sense of closing is secured. In this state, the lock remains during the time in which the door is repeatedly opened and closed, e.g. B. during the daytime. The door can be opened at any time without a key by turning the handle / in the direction of the arrow χ (Fig. 5), since the handle / is only secured against rotation in the direction of opening if the bolt is in the closed position (Fig. 1) and in this position by the locking mechanism Mm ^% , <? is established. The locking mechanism Nn ", g ² has no effect on the mobility of the handle /, since this locking mechanism is only used to determine the handle H. The fact that the inner handle J can be adjusted without introducing the key is irrelevant for the security of the lock it only in this respect

What matters is that the outer handle H cannot be adjusted without using the correct key. That the inner handle / can be adjusted without a key is only desirable in the interest of the convenience of using the lock. Should the door, e.g. B. for the night, can be completely closed from the inside, so by inserting the key through the keyhole α ¹ "

to (Fig. 8) first disengaged the locking mechanism M nf, c ^s provided for the bolt in the manner described above. Then the handle / is rotated against the direction of the arrow χ , the lever arm L ¹ moves the abutment E and this brings the bolt C into the closed position in the manner described above. If you now pull out the key, the initial state illustrated in Fig.

ao is enough. Even if the key is left inside, the lock is still sufficiently secured, since the outer handle H in this case is still prevented from rotating in the sense of opening by the locking mechanism N n-, g ^2.

Claims (9)

Patent Claims: i. Lock with bolt and latch, in which the latch can also be adjusted by the handle which is used to retrieve the latch held by a spring in force-locking connection with it, characterized in that the handle (H or /) in the closed position of the Trap (Z?) Can also be adjusted in the opposite sense to the return movement, regardless of the case (B), and is connected to the bolt (C) in such a way that it is known per se when the trap (B) is retrieved Way from the closed position to the open position, on the return of the Trap (B) in the closed position remains in the open position and is pushed back into the closed position by the movement of the handle (H or /), which takes place independently of the latch (B) , in the direction opposite to the return movement. 2. Lock according to claim 1, characterized in that the handle (H) independently of the by a disengageable locking mechanism (M w ?, c ⁵ ) secured bolt (C) against the return movement by a special locking mechanism (Λ ^; η ² , g ² ) is secured, which can be disengaged at the same time with the locking mechanism (M m ^z , c ⁵ ) provided for the bolt (C) by means of a socket wrench (P) . 3. Lock according to claim 1, characterized in that the spring (D ) provided for the case (B) is supported on a movable abutment (E) which is supported by the handle (H or /) when this is independent of the case ( B) in which the return movement is moved in the opposite direction, is adjustable and in the middle position of the handle (H or /) is supported on a fixed abutment (ar) . 4. Lock according to claim 3, characterized in that the bolt (C) is adjustable by the movable abutment (E) in the sense of the closer. 5. Lock according to claim 2, characterized in that above the bolt (C) a sliding piece (G) which can be displaced independently of this is arranged, which is adjustable by the handle (H) during its return movement against the action of a spring (D), and that the two locking devices (Mm ", c ^D and Nn ² , g ² ) provided for the bolt (C) and the handle (H) are superimposed pawls (M and N) for the bolt (C) and the slider (G) own. 6. Lock according to claim 5, characterized in that the latch (B) is adjustable by the handle (H) with the mediation of a projection (G- ³ ) arranged on the slider (G). 7. Door lock according to claim 1 and 2 with an outer and an inner handle, characterized in that the two handles (H and /) are independently adjustable and only the outer handle (H) is provided independently of the one for the bolt (C) Lock (M m ² , c ') is secured by a special lock (A ^T n ² , g ² ). ico 8. Door lock according to claim 7, characterized in that the locking mechanism (M ni-, c ⁵ ) provided for the bolt (C) can be disengaged by means of a pawl (Q) which is adjustable from the inside into the disengaged position. 9. Socket wrench for door locks according to claim 7 and 8, characterized in that its shaft on one side with a suitable longitudinal profile (^ ¹ ) for the simultaneous disengagement of both locking mechanisms (M m ² , c ' and N n ^s , g ² ') and on the other side is provided with a longitudinal profile (p ² ) which is suitable for disengaging the pawl (Q) which can be adjusted from the inside. 1 sheet of drawings.