EP2716848A1 - Locking bolt for a sliding door - Google Patents

Abstract

The bolt (3) has a closing device (6) arranged in a housing (5). A closing bolt (7) is displaceably guided relative to the housing between opening and closing positions. The closing device drives a shaft (10), which is rotatably mounted relative to the housing. The shaft and the closing bolt are movement-technically coupled such that the closing bolt is translationally driven by rotation of the shaft. The closing bolt is movement-technically decoupled from the shaft during subjecting with an axial pressure force, and reversibly designed from the closing position into the opening position.

Description

The invention relates to a bolt lock for a sliding door, comprising a housing, a closing device arranged in the housing and a locking bolt displaceably guided between an open position and a closed position, wherein the closing device drives a shaft rotatably mounted relative to the housing, wherein the shaft and the locking bolt are coupled in terms of movement such that the locking bolt is driven translationally by a rotation of the shaft.

Bolt locks for sliding doors are known per se from the prior art, for example from the DE 20 2006 012 565 U1 , A bolt lock is placed in a door leaf of a sliding door. For this purpose, the door leaf on a corresponding receptacle. The bolt lock has a usually cylindrically shaped housing. This housing is securely fixed to the door leaf.

The door leaf has an inside and an outside. When used as intended, the locking device arranged in the housing of the bolt lock is accessible from the outside of the door leaf. On the opposite side of the housing, namely on the inside of the door leaf, the locking pin is arranged in the housing. The locking bolt can be moved between an opening position enabling the door leaf to move and a locking position blocking the movement of the door leaf. The locking pin is quasi telescopically mounted in the housing. In the open position can be provided that the locking pin is retracted completely or predominantly in the housing. In the closed position stands the locking pin, however, before from the housing.

In known bolt locks, for example according to the DE 10 2008 027 081 A1 , both the locking bolt and the locking device are moved translationally within the housing. This means that, in the open position, the closing device protrudes toward the outside from the housing, and in the closed position, the end of the closing bolt lying opposite the closing device protrudes toward the inside from the housing. In contrast, the present invention relates to such a bolt lock, in which the locking device is arranged in a fixed position in the housing. That is, the position of the closing device relative to the housing is the same in the open position and in the closed position.

A generic bolt lock shows the DE 20 2005 019 410 U1 , In this, a closing device is provided which rotatably drives a spindle. The spindle is fixed in its axial position relative to the housing and rotates coaxially about the longitudinal axis of the housing. This spindle drives a provided with a corresponding internal thread locking pin. Thus, the spindle and the locking pin are motion-technically coupled such that the locking pin is driven in translation by a rotation of the shaft.

In a generic bolt lock is essential that the locking pin is retractable if necessary, namely for the purpose of an emergency release. This is to ensure that a person inside the door leaf can unlock a locked sliding door in an emergency. Emergency release here means that on the inside of the door, an axial compressive force is exerted on the end face of the locking bolt in order to drive back the locking bolt from the closed position in the direction of the open position.

The 20 2005 019 410 U1 proposes for emergency unlocking to rigidly form the kinematic coupling between the spindle and the locking pin and to ensure, by a suitable choice of thread pitch on the spindle, that the spindle drive can be re-driven by pressure on the locking pin. However, it has been shown that in this case an emergency release does not always work reliably. By wear effects and / or the like may instead occur a self-locking, so that the bolt lock is then no longer recoverable, that is emergency unlocked. On top of that, for one Repulsion even under ideal conditions comparatively large forces are required because the friction of the spindle drive has to be overcome and the inertia of the spindle rod must be moved.

It is therefore an object of the present invention to further develop a generic bolt lock to the effect that an emergency release is easier and more reliable possible.

To solve the invention proposes that the locking pin is formed when actuated with an axial pressure force in terms of movement of the shaft decoupled from the closed position in the open position is driven back.

According to the invention, the manner of a movement coupling between the shaft and the locking bolt depends on whether the locking bolt is either driven by the shaft or driven by a force caused outside the bolt locking, in particular an axial compressive force on the end face of the locking bolt.

If the locking pin is driven by the shaft, there is a kinematic coupling such that a rotation of the shaft drives the locking pin translationally. In a first direction of rotation of the shaft of the locking pin is moved in the direction of the open position. In a second, reversed direction of rotation of the shaft, however, the locking pin is moved in the direction of the closed position.

However, if the locking bolt is subjected to an external, axial compressive force, according to the invention there is no kinematic coupling between the shaft and the locking bolt. Rather, the locking bolt is designed to be movable in translation from the closed position to the open position without rotation of the shaft.

The advantage of the embodiment of the invention is that for the purpose of an emergency release only the locking pin must be moved. The emergency release aggravating frictional effects in the power transmission between the locking pin and shaft, an increased force due to co-movement of the shaft and / or the like eliminated completely.

A locking device according to the invention serves to actuate the bolt lock from the outside of a door leaf. Actuation means the optional transfer of the locking pin in the open position or the closed position. It can be a handle, for example a rotary knob, a lock with in particular a conventional profile lock cylinder or the like.

A further advantage of the invention is that the shaft does not perform an axial movement relative to the housing either when the bolt lock is actuated by the locking device or when actuated in the context of an emergency release. Generic bolt locks are often used in sliding doors for refrigerators. With an axial movement of the shaft, a transfer of hot air in the cooled area would be connected. This effect remains according to the invention, which increases the energy efficiency in the operation of a cold room.

According to an advantageous development of the invention, the shaft has a link, in particular a helical groove, and the locking pin has a cam, or the locking pin has a link, in particular a helical groove, and the shaft has a cam. The backdrop serves to accommodate a cam, also called sliding block. The cam is guided in the scenery. The cam can be arranged on the locking pin. The locking pin may be formed as a hollow body. The cam is then arranged on the inner surface of the locking bolt. The backdrop preferably extends obliquely to the axial direction of the shaft, for example helical-like, as a helical groove and / or the like. It can be provided over the circumference of the shaft several, in particular identically designed, scenes. It can then be arranged on the locking pin a corresponding number of cams. This design has the advantage that the forces to be transmitted between the shaft and the locking bolt are distributed over several points of application of force.

According to an advantageous embodiment of the invention, the cam is decoupled in the case of the return from the backdrop. The scenery is intended to provide a path for kinematic coupling of the movements of the shaft and locking bolt. The term path includes the terms path, guide, groove and the like. The web provides a contact area where the cam is slidably movable. In the case of repelling the cam leaves the track. It can be provided that the cam and / or the link are spring-loaded. If one concerns the repatriation causing axial compressive force on the locking pin is then compressed a spring element, which then the cam can jump out of the backdrop. The cam can enter the gate again when the opening position is reached. It can be provided that the cam initially jumps out of a first path of the gate and then enters again upon reaching the open position in a second path of the scenery.

According to an advantageous embodiment of the invention, the scenery on an alternative, the decoupling of shaft and locking pin enabling path. This means that the cam of the locking pin is guided in a proper operation, that is, actuation by the locking device, in a first path of the gate. In the case of an emergency release, that is axial pressure force acting on the Schüeßbolzen from outside, moves the cam of the locking bolt on an alternative path of the backdrop. This path preferably extends in the axial direction of the shaft. This can ensure that a translational movement of the locking bolt is not converted into a rotational movement of the shaft. The backdrop on the shaft can have a sawtooth profile, in particular when projecting into a plane. In a proper operation of the bolt locking the cam of the locking bolt is guided in the oblique areas of the sawtooth curve. In the closed position, the cam is located in the upper tip of a sawtooth. In the case of emergency unlocking, the cam then moves along a path of the slide, which runs quasi-vertically downwards from the tip of the sawtooth.

According to an advantageous embodiment of the invention, the locking pin is urged spring-loaded from the open position into the closed position in the housing. This means that the locking bolt is arranged in such a way with the interposition of a spring element in the housing, that a deflection of the locking bolt from the closed position in the direction of the open position leads to the spring element exciting deflection of the same. This training has advantages, for example, if the locking pin is latched in the open position in the event of repulsion. If the Schüeßbolzen is in fact latched after a repulsion in the open position, it can be provided that this latching is released by actuation of the locking device, and then the locking bolt snaps back into the closed position due to the prestressed spring element. With this closed position is the entire bolt lock then again in the usual way operable.

The locking of the locking pin in the open position after a repatriation has even more advantages. A user of the emergency release can thereby perform in a first step, a return drive of the locking bolt, and then has both hands for operating the door panel free.

According to an advantageous development of the invention, the shaft has at its end remote from the closing device at least one latching means that cooperates depending on the angle of rotation of the shaft with a corresponding locking means of the locking bolt. The latching means of the shaft may be, for example, a circumferential notch. At one or more points of the notch may be removed to the end face of the shaft-limiting web. The shaft then has distributed over its circumference first areas in which a locking is possible and second areas in which the locking is not possible or can be solved again on. The locking means of the locking bolt may be locking lugs, projections and / or the like. However, it is preferably at least one round steel, which is aligned in a direction tangential to the shaft. This round steel can have elastic properties. The locking pin then hits when driving back with the round steel on the notch in the shaft to the front end limiting ridge. By appropriate arrangement of the round steel can be brought to jump over the bridge at overpressures given by this contact axial force of the round bar. The round steel then pops into the notch formed on the shaft. There he locks with the wave, so to speak. The locking pin is then held in the open position latched to the shaft. If the shaft is rotated, namely in such a way that a region of the notch is brought into contact with the round bar without a web which delimits the notch toward the end face, the catch connection between the lock bolt and the shaft is released. If the locking pin is under spring tension, it will snap back into the closed position.

According to an advantageous embodiment of the invention, the bolt lock on a co-operating with the locking pin spring element, wherein the deflection of the spring element during a return drive of the locking bolt for the purpose of emergency release at least over a part of the movement path of the locking pin is proportional to this movement. According to this development, a kind Threshold for the actuating force to drive back the striker are defined. Only when this threshold is exceeded, a repulsion of the locking pin in the open position is possible. As a result, accidental Notentriegelungs actuations of the bolt lock can be effectively prevented. It can be provided that the cam of the locking pin, which is guided in the slot of the shaft, urging radially under spring bias out of the locking pin inwardly in the direction of the shaft out. This initially has the advantage that the cam-link guide between the locking pin and shaft is improved in terms of reliability, since manufacturing inaccuracies or the like can be tolerated. On the other hand, this has the advantage that the alternative emergency unlocking path may have such a geometry as to increase the deflection of the cam biasing spring as it enters this alternative path.

Fig. 1

eine erste Ausführungsform einer erfindungsgemäßen Bolzenverriegelung in verschiedenen Ansichten;

Fig. 2

die Welle der Bolzenverriegelung gemäß Fig. 1 in verschiedenen Ansichten;

Fig. 3

eine Ausführungsform einer erfindungsgemäßen Bolzenverriegelung in der Schließstellung einerseits und der Öffnungsstellung andererseits;

Fig. 4

die generelle Funktionsweise einer erfindungsgemäßen Bolzenverriegelung bei Verwendung mit einer Schiebetür;

Fig. 5

eine zweite Ausführungsform einer erfindungsgemäßen Bolzenverriegelung in verschiedenen Ansichten; und

Fig. 6

eine dritte Ausführungsform einer erfindungsgemäßen Bolzenverriegelung in verschiedenen Ansichten.

Further advantages and features of the invention will become apparent from the following description of the figures. Show it:

Fig. 1

a first embodiment of a bolt lock according to the invention in different views;

Fig. 2

the shaft of bolt locking according to Fig. 1 in different views;

Fig. 3

an embodiment of a bolt lock according to the invention in the closed position on the one hand and the open position on the other;

Fig. 4

the general operation of a bolt lock according to the invention when used with a sliding door;

Fig. 5

a second embodiment of a bolt lock according to the invention in different views; and

Fig. 6

a third embodiment of a bolt lock according to the invention in different views.

Fig. 1 shows a first embodiment of a bolt lock 3 according to the invention in different views. The bolt lock 3 has a housing 5, in which a locking pin 7 is movably guided in the axial direction 14. The locking pin 7 is movable between a retracted into the housing 5 opening position and a front side of the housing 5 protruding closed position. In the Fig. 1 the closed position of the locking pin 7 is shown.

In the housing 5 of the bolt lock 3, a closing device 6 is arranged. The locking device 6 is designed as a profile cylinder. A closing lug 21 of the closing device 6 drives a shaft 10 rotatably mounted in the housing 5. The shaft 10 is fixed in the axial direction 14 in the housing 5. The shaft 10 performs only rotational movements.

The shaft 10 has a link 11. The link 11 is formed in the region of the lateral surface of the shaft 10. The backdrop 11 will be described in more detail below. It is essential that in the backdrop 11, a cam 12 is guided. The cam 12 is arranged on the locking pin 7. For this purpose, the locking pin 7 has a radially extending bore. In this formed as a spherical body cam 12 is added. A resumed in the radial bore and back spring 19 urges the cam 12 in the radial direction inwardly, namely in the direction of the shaft 10. The cam 12 is thus guided spring-loaded in the slot 11 of the shaft 10.

The locking pin 7 is movable relative to the housing 5 in the axial direction 14. The locking pin 7 is rotatably guided in the housing 5. For this purpose serve guide means 22, for example, a kind of rail guide or tongue and groove connection.

During normal operation of the bolt lock 3, the closing lug 21 of the closing device 6 rotates the shaft 10. A rotation of the shaft 10 is transformed by the cam 12 / link 11 guide in an axial movement of the locking pin 7. As already mentioned, rotational movements of the locking bolt 7 are prevented by the guide means 22.

Fig. 2 shows the shaft 10 as a single part in different views. The backdrop 11 has a helical or helical-like course. The shaft 10 with the thus formed link 11 fulfills a kind of screw or spindle function. During a rotational movement of the shaft 10, the cam 12 slides in the slot 11, which leads to the already described axial movement of the locking pin 7 due to the slope of the link 11.

It is essential that the bolt lock 3 is decoupled in terms of movement technology from the shaft 10 can be unlocked. For this purpose, the link 11 on an alternative path 13, on which path 13 of the cam 12 can be moved in terms of movement of the shaft 10 in the axial direction 14 moves. The alternative path 13 is formed as a ramp. This does not only follow from the presentation Fig. 2 , but also from the cross-sectional view according to Fig. 1c ) clear. The path 13 extends in the axial direction 14 of the shaft 10. It begins at a location of the gate 11 in which the cam 12 is in the closed position 23. By an end-side pressure force 20 on the locking pin 7, the cam 12 is pressed into the path 13. The ramp shape of the path 13 causes the cam 12 is pressed against the spring force of the spring 19 radially outward into the locking pin 7. If the locking pin 7 reaches the open position, ie the cam 12 reaches the area of the open position 24 of a locking groove 18, the cam 12 jumps into this locking groove 18 by the spring tension of the spring 19. The locking pin 7 thus locked after an emergency release in the locking groove 18. He is then in the open position 24 of the locking groove 18th

The locking groove 18 has ramp areas in the circumferential direction on both sides. When driving over these ramp areas, the cam 12 can slide against the force of the spring 19 into the locking bolt 7. During a rotational movement of the shaft 10 out of this open position 24 in the latching groove 18, it is thus again achieved that the latching bolt 7 is decoupled from the shaft 10 in terms of its motion. If the shaft 10 of the in Fig. 2b ) shown in the in Fig. 2c ) shown position, the cam 12 occurs under bias of the spring 19 back into the slot 11 a. The cam 12 is then in the open position 24 in the region of the gate 11. This is the intended opening position 24 upon actuation of the bolt lock 3 by the locking device. 6

The bolt lock 3 can now be operated again in the intended manner. With a corresponding rotation of the shaft 10, the cam 12 slides in the slot 11, so that the locking pin 7 could be transferred back into the closed position 23.

Fig. 3 shows a housing 5 of a bolt lock, regardless of the design of the mechanism inside the bolt lock. The only thing that matters is that the Fig. 3 the closed position of the locking bolt 7 (upper figure) on the one hand and the open position of the locking bolt 7 (lower figure) on the other hand shows.

The Fig. 4 illustrates the operation of a generic bolt lock. Fig. 4a ) shows a sliding door 4, which closes a passage in a wall 25. The sliding door 4 is movable in the direction of movement 26. Such movement is prevented by the locking pin 7 of the bolt lock. The locking pin 7 is namely in the closed position. An actuation of the bolt lock is now possible either from the outside, ie from the area located above the sliding door 4 in the figure, or from the inside, ie the area located below the sliding door 4. The latter case is the so-called emergency release. For this purpose, a user presses with a pressure force 20 frontally on the locking pin 7. The locking pin 7 thereby locked in the manner described above in the housing 5 (see Fig. 4b ) in the open position. Subsequently, the sliding door 4 can then be moved in the direction of movement 26, which releases the previously closed passage ( Fig. 4c ).

Fig. 5 shows a second embodiment of a bolt lock according to the invention 1. This differs from the first embodiment of the bolt lock 3 according to the FIGS. 1 and 2 in that the link 11 does not have a continuous course over the circumference of the shaft 10, but a plurality of separate tracks. Such a shaft 8 or gate 11 is suitable when the bolt lock 1 is not intended to allow any circulating operation of the shaft 8, ie no circulating operation of the locking device. 6 Fig. 5a shows the closed position of the bolt 7 and Fig. 5b the open position.

Fig. 6 shows a third embodiment of a bolt lock 2. This differs from the first and the second embodiment by the formation of the shaft 9. The gate 11 of the shaft 9 has substantially the same course as the gate of the shaft 10 of the first embodiment. In contrast, however, the alternative path 13 has no ramp, but is formed as a continuous path with a constant depth. The cam 12 does not have to execute any movements in the radial direction when passing over this path 13. Thus, the cam 12 of this embodiment need not be spring loaded. The spring 19, which is required in the first and the second embodiment of the bolt lock 3, 1, is dispensable in this embodiment. In the housing 5, however, a spring element 15 is arranged, which is an emergency release, ie counteracts a movement of the locking bolt 7 in the housing 5, at least in part of the movement path. The Schüeßbolzen 7 thus urges back from the closed position under bias of the spring element 15 in the open position. In the case of an emergency release, therefore, the locking pin 7 is locked to the shaft 9. For this purpose, the locking pin 7 latching means 16. The locking means 16 are formed as mutually opposite rod elements. The shaft 9 has frontally also a locking means 17. The locking means 17 is formed as an undercut disc. This has a deviating from the circular shape peripheral shape. If the locking pin 7 is pressed in the case of an emergency release in the direction of the shaft 9 in the housing 5, lock the locking means 16, ie the rod elements, by overriding the required spring force with the locking element 17. This means, after an emergency release is the locking pin. 7 fixed by the behind the undercut disc (locking means 17) of the shaft 9 latched locking means 16.

By deviating from the circular shape peripheral shape of the locking means 17, for example, a hexagonal shape, a rotation of the shaft 9 causes the positive connection between the locking means 16 and the locking means 17 is repealed. The undercut region of the locking means 17 is in fact only partially formed. Upon rotation of the shaft 9, the locking means 16 from a region of the locking means 17 with undercut area in an area without undercut occur. The locking pin 7 then snaps back into the closed position due to the bias of the spring element 15.

Fig. 6a shows the closed position and Fig. 6b the opening position of the bolt 7. The shaft 9 is formed of two shaft elements, which are connected to each other, in particular screwed.

LIST OF REFERENCE NUMBERS

1

bolt locking

2

bolt locking

3

bolt locking

4

sliding door

5

casing

6

closing device

7

locking pin

8th

wave

9

wave

10

wave

11

scenery

12

cam

13

path

14

axial direction

15

spring element

16

latching means

17

latching means

18

locking groove

19

feather

20

thrust

21

Cam

22

guide means

23

closed position

24

open position

25

wall

26

movement direction

Claims (9)

Bolt lock (1, 2, 3) for a sliding door (4), with a housing (5), one in the housing (5) arranged closing device (6) and a relative to the housing (5) between an open position and a closed position slidably guided Locking bolt (7), wherein the closing device (6) drives a relative to the housing (5) rotatably mounted shaft (8, 9, 10), wherein the shaft (8, 9, 10) and the locking pin (7) are coupled in terms of movement such in that the locking bolt (7) is driven in translation by a rotation of the shaft (8, 9, 10).
characterized,
that the locking pin (7) when actuated with an axial pressure force from the shaft (8, 9, 10) decoupled from the closed position in the open position is designed to be repositioned. Bolt lock according to claim 1, characterized in that the shaft (9, 9, 10) a link (11), in particular a helical groove, and the locking pin has a cam (12) or the locking pin (7) has a link (11), in particular a helical groove, and the shaft (9, 9, 10) has a cam (12). Bolt lock according to claim 2, characterized in that the cam (12) is decoupled from the gate (11) in the event of the return drive. Bolt lock according to claim 2 or 3, characterized in that the gate (11) is followed by an alternative, the movement-related decoupling of shaft (8, 9, 10) and locking pin (7) enabling path. Bolt lock according to claim 4, characterized in that the path extends in the axial direction (14) of the shaft (8, 9, 10). Bolt lock according to one of the preceding claims, characterized in that the locking bolt (7) is spring-mounted urgently in the housing from the open position to the closed position. Bolt lock according to one of the preceding claims, characterized in that the locking pin (7) is latched in the open position in the case of the return drive. Bolt lock according to one of the preceding claims, characterized by a with the locking bolt (7) cooperating spring element (15), wherein the deflection of the spring element (15) during a repulsion of the locking bolt (7) at least over a part of the movement path of the locking bolt (7) proportional to this movement path is. Bolt lock according to one of the preceding claims, characterized in that the shaft (8, 9, 10) at its end facing away from the closing device (6) has at least one latching means (17) which, depending on the angle of rotation of the shaft (8, 9, 10) with a corresponding locking means (16) of the locking bolt (7) cooperates.

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