EP2628875A1 - Safety rotary lock - Google Patents

Abstract

The safety turning bolt has housing (1), locking core (6) and locking tongue portion (15). The locking core is rotatably mounted in the housing and locking tongue portion is rotatably mounted with respect to the locking core. The sleeve-shaped guide element (20) is rotationally fixed with respect to housing against a force of spring (19) for taking different axial positions, and penetrated by locking core. The locking core is provided in the axial positions of the guide element rotatably and non-rotatably.

Description

The present invention relates to a safety rotating latch with a housing, a lock core and a locking tongue, wherein the lock core rotatably disposed in the housing and the locking tongue is rotatably connected to the lock core at its end projecting through the housing

Such security turning bars are also known and designated by the term cam lock and are known in the art. The housing is attached to a door or a flap, to which the housing is sleeve-shaped and is usually provided with an external thread. It is inserted through a hole in a door or flap and fixed by a nut. In the housing is rotatably arranged the lock core. This protrudes through the housing, so that at its free protruding from the housing outer end a locking tongue can be arranged. This is rotatably connected to the lock core. At the opposite end of the closing tongue of the lock core, for example, this has a square contour, so that by means of a square wrench, a rotation of the lock core relative to the housing is possible. In this way, the locking tongue can be rotated in a door locking or the door releasing position. Usually, it is ensured by a rotation stop that the locking tongue can take a locking and a freeing end position.

In particular cases of use, for example in trains, vehicles or the like, such safety latches or locking latches must also be so sure that they do not open unintentionally. This is called shaking safety.

A generic security rotating bolt is known, for example from the DE 20 2005 005 774 U1 , To generate vibration safety an actuating shaft is used here, which is displaceable against the force of a spring supported on the lock core. By this force, the lock core is held. A entrainment of the lock core is effected by a locking pin. The actuating shaft can be positioned in a release position on the one hand and a driving position on the other hand with respect to the lock core. This previously known solution for a cam lock has the disadvantage of a complicated structure due to a large number of interacting individual parts. The guide slot is either formed in the closure housing, which has the disadvantage of difficult processing and optionally sealing of the housing with it, or a corresponding link is formed by inserting a tubular body into the housing.

An improved contrast training of a cam lock is from the DE 20 2008 002 511 U1 known, in which in the housing wall of the closure housing a projecting into the interior of the closure housing and arranged in the securing part arranged on the guide slot engaging pin is arranged. The security part is spring-loaded. The pin serves on the one hand to guide the arranged in the closure housing movable parts, on the other hand, the fixation in the closure housing after assembly. The disadvantage here is that the trained in the securing part guide slot at each end provides a detent position, so that in each of the end positions from the outside, all parts regularly occupy the same position. It is practically impossible to see in which state the lock is located and by obeflächliches looking undetectable, whether the door, the flap or the like is open or closed. In addition, the pen protruding through the housing, that in a final assembly all parts must be mounted at once, so a pre-assembly of modules is not possible.

The present invention is therefore based on the object to provide a security rotating bolt, which does not have the disadvantages described above.

For the technical solution of this problem is proposed by the invention a safety rotating latch with the features of claim 1.

Further advantages and features emerge from the subclaims.

According to the invention, a sleeve-shaped guide member is arranged between the housing and the lock core, which is introduced against rotation relative to the housing. However, it can be longitudinally displaced against the force of at least one or more springs and can assume different axial positions in this way. In this case, the inner contour of the guide part on the one hand and the outer contour of the lock core on the other hand coordinated such that the lock core against the guide member in at least one axial position of the guide member is rotatable and rotatable in at least one other axial position of the guide member.

Due to the inventive design only a few parts are initially used for the overall assembly of the safety lock. In addition, the lock core and guide part can be pre-assembled. Furthermore, the guide member need only be axially displaced for the purpose of twisting the lock core, after twisting the guide member may occupy another predetermined axial position. In this way, it is possible to use the position of the guide member with respect to the housing as an indicator for the opening or closing state.

Advantageously, the lock core over its axial length regions with different diameters. Thus, compared to a guide member having a predetermined inner diameter can be effected that in some axial positions of the guide member relative to the lock core a rotatability, in others a rotationally fixed connection are given.

Advantageously, the locking core may have locking grooves on the outer wall. The guide member can then lock with pointing to the lock core cam in the locking grooves. The locking grooves may be part of a guide slot, and the cams may be inserted into the guide member pins.

In principle, the other way around, the reverse possibilities are feasible, that is, on the lock core pins can be and on the inner circumference of the guide member locking grooves or guide slots can be formed. Also, the areas of different diameters may be formed in the region of the guide part.

To make the interaction between the guide part and the lock core such that the relative rotation between two end positions in the sense of a respective

Stopper executed, the locking core may have stop edges. These too can be part of the guidance. Again, the simple reversal is within the scope of the invention by the stop edges are formed on the inner circumference of the guide member.

In an advantageous manner, the guide part has an end face which is positioned flush with an edge face of the housing in an axial end position caused by the spring force. Another position may represent a state in which the guide member is inserted into the housing so that the end face is positioned inside the housing. In this way, different states can be displayed. Even by superficial looking up the viewer thus information about the closed state are revealed. Moreover, it is within the scope of the invention, when the guide member projects so far out of the housing, that it is positioned flush with an end face of the lock core. In this way, a status indication is also possible. In this case, the end face of the lock core and the end face of the guide member project beyond the upper edge surface of the housing.

For actuation, the guide part must first be moved far into the housing in order in this way to bring the guide part relative to the lock core into a position in which the lock core can be rotated relative to the guide part. This can be effected, for example, by displacing pins arranged on the inner surface of the guide part into the region of a guide slot with a correspondingly slim diameter. This is done by the guide member is pressed against the force of a spring in the housing. Since this actuation position can be arranged such that the guide part lies with its upper end face within the housing, the safety rotating latch is particularly tamper-proof.

Advantageously, the locking core has a taper in the lower region, which protrudes through an opening on the underside of the housing. At this point, the locking tongue can be secured against rotation on the lock core. Also at this point, the lock core may be formed as a square.

In the middle region of the lock core may be formed with a circular guide slot, which cooperates with pins arranged in the guide part.

With the invention, an easily realizable possibility is provided to design a security rotating bolt with few parts, easy to assemble, tamper-proof and in such a way that at a glance the closed state can be seen.

Fig. 1

eine perspektivische explosionsartige Darstellung eines Ausführungsbeispiels für einen erfindungsgemäßen Sicherheitsdrehriegel;

Fig. 2a

eine perspektivische Ansicht eines Ausführungsbeispiels des erfindungsgemäßen Drehriegels in einer verschlossenen Position;

Fig. 2b

eine Seitenansicht des Drehriegels gemäß Fig. 2a;

Fig. 2c

eine Schnittansicht entlang der Linie 2c-2c gemäß Fig. 2b;

Fig. 3a

eine perspektivische Ansicht des Ausführungsbeispiels gemäß Fig. 2a in einer ersten Betätigungsposition;

Fib. 3b

eine Seitenansicht des Drehriegels gemäß Fig. 3a;

Fig. 3c

eine Schnittansicht entlang der Linie 3c-3c gemäß Fig. 3b;

Fig. 4a

eine perspektivische Ansicht des Ausführungsbeispiels gemäß Fig. 2a in einer zweiten Betätigungsposition;

Fig. 4b

eine Seitenansicht des Drehriegels gemäß Fig. 4a;

Fig. 4c

eine Schnittansicht entlang der Linie 4c-4c gemäß Fig. 4b;

Fig. 5a

eine perspektivische Ansicht des Ausführungsbeispiels gemäß Fig. 2a in einer offenen Position;

Fig. 5b

eine Seitenansicht des Drehriegels gemäß Fig. 5a;

Fig. 5c

eine Schnittansicht entlang der Linie 5c-5c gemäß Fig. 5b;

Further features and advantages of the invention will become apparent from the following description with reference to FIGS. Showing:

Fig. 1

a perspective exploded view of an embodiment of a security rotating latch according to the invention;

Fig. 2a

a perspective view of an embodiment of the rotary latch according to the invention in a closed position;

Fig. 2b

a side view of the rotary latch according to Fig. 2a ;

Fig. 2c

a sectional view taken along the line 2c-2c according to Fig. 2b ;

Fig. 3a

a perspective view of the embodiment according to Fig. 2a in a first operating position;

Fib. 3b

a side view of the rotary latch according to Fig. 3a ;

Fig. 3c

a sectional view taken along the line 3c-3c according to Fig. 3b ;

Fig. 4a

a perspective view of the embodiment according to Fig. 2a in a second operating position;

Fig. 4b

a side view of the rotary latch according to Fig. 4a ;

Fig. 4c

a sectional view taken along the line 4c-4c according to Fig. 4b ;

Fig. 5a

a perspective view of the embodiment according to Fig. 2a in an open position;

Fig. 5b

a side view of the rotary latch according to Fig. 5a ;

Fig. 5c

a sectional view taken along the line 5c-5c according to Fig. 5b ;

In the figures, the same elements are provided with the same reference numerals.

• Der Sicherheitsdrehriegel umfasst ein Gehäuse 1, welches topfartig ausgebildet ist und ein Außengewinde 2 trägt. Auf dieses Außengewinde 2 kann eine Mutter 3 aufgeschraubt werden. Ein Ring 4 dient der Sicherung in an sich bekannter Weise. Das Gehäuse 1 kann durch ein Loch in einer Tür oder Klappe oder dergleichen gesteckt und durch Aufschrauben der Mutter 3 entsprechend befestigt werden. Der Innenraum des Gehäuses 1 ist im gezeigten Ausführungsbeispiel im Wesentlichen quadratisch mit gerundeten Ecken ausgebildet. Wie in den Fign. 2a, 2c, 3a, 3c, 4a, 4c, 5a und 5c gezeigt ist, ist das Gehäuse im Wesentlichen topfartig ausgebildet und hat im unteren Bereich eine Öffnung.

According to Fig. 1 the described embodiment for a security rotating bolt according to the invention comprises the following items:

• The safety rotating bolt comprises a housing 1, which is pot-shaped and carries an external thread 2. On this external thread 2, a nut 3 can be screwed. A ring 4 serves to secure in a conventional manner. The housing 1 can be inserted through a hole in a door or flap or the like and secured by screwing the nut 3 accordingly. The interior of the housing 1 is formed in the embodiment shown substantially square with rounded corners. As in the FIGS. 2a, 2c . 3a, 3c . 4a, 4c . 5a and 5c is shown, the housing is substantially pot-shaped and has an opening in the lower area.

In the housing, a lock core 6 can be used, which has a square 7 as the operating area in the upper edge region. In the embodiment shown, a square 8 is also formed at the lower end. This square 8 is used to attach the locking tongue, as will be described later. The lock core has areas of different diameters over its length. Thus, a small-diameter tapered portion 9 is formed. In an overlying area locking grooves 10 are formed. In a lower region, a guide slot 11 is formed with stops 12.

When the lock core is inserted through the lower opening of the housing 1 penetrating into the housing 1, the locking tongue 15 can be secured to the lock core 6 by means of the screw 13 using the lock washer 14. For this purpose, the square opening 16 of the locking tongue 15 is pushed onto the square 8. In the area of the lock core 6 has a bore into which the screw 13 can be screwed. The lock core is thus rotationally connected to the locking tongue 15, but rotatably received in the housing 1.

With the interposition of a spring 19, a guide member 20 is inserted, which has a square inner bore 23 which engages over the square 7 of the lock core 6. Locking pins 21 which are inserted, screwed or otherwise suitably secured, are arranged on the guide member so that they into the square hole 23rd protrude. This is for example in the FIGS. 2c . 3c . 4c and 5c shown. After placing the guide member 20 on the lock core 6 on the square 7, the pins 21, 22 are introduced and engage under the square 7. Strictly speaking, the pins 21, 22 inserted into the locking grooves 10. It is thus possible to form a preassemblable unit of lock core 6, spring 19 and guide member 20. This unit can then optionally be inserted with the interposition of discs 17, 18 in the housing 1 and is fixed axially by the arrangement of the locking tongue 15 and the screw 13.

The guide member 20 has an outer contour that completely corresponds to the contour of the housing interior 5. Since it is a square contour with rounded corners (according to the embodiment, other contours are denbar), the guide member 20 relative to the housing 1 is not rotatable. As long as the square 7 of the lock core 6 is seated in the square inner bore 23 of the guide member 20, thus the shooting core 6 is not rotated relative to the housing 1, and thus also the locking tongue 15 in a fixed position.

With reference to the groups of figures 2 to 5, the function of the embodiment will be explained in detail below. It is only in the FIGS. 2a, 2b and 2c designates all parts, the identical parts are designated in the groups of figures 3, 4, and 5 only if this is important for the functional description. However, the groups of figures 3 to 5 otherwise show the identical part as shown and described also in the figure group 2.

The in Fig. 2a shown as a perspective view safety latch is shown in a position which is referred to as a closed position. It is the position in which a door, a flap, a box or the like are closed by the arrangement of the locking tongue.

The Fig. 2a shows the assembled unit consisting of housing 1, lock core, visible on the square 7, guide member 20 and lock 15.

In the side view according to Fig. 2b are also the disc 4 and the screw 13 can be seen.

The interaction of the parts is in the view according to Fig. 2c to recognize. It can be seen that the pins 21, 22 are arranged in the guide member 20 such that they engage under the square 7 of the lock core 6. Thus, these parts are axially secured. By the spring 19, the guide member is pushed up (in the drawing plane, ie out of the housing) and is seated due to the pins and the locking grooves 10 in a predetermined end position. Since the guide member 20 is not rotatable relative to the housing 1 and the square 7 is also not rotatable relative to the guide member 20, in this way the lock core 6 is not rotated relative to the housing 1. For this reason, the locking tongue sits in an end position and locked in this way a door effectively. Since the Überdeckungsweg between square 7 of the lock core 6 on the one hand and the square inner bore 23 of the guide member 20 is very long, the bolt can not be shaken, so that unintentional operation is excluded. In addition, since the way is so long that the guide member must be pressed very deep into the housing before the lock core could be rotated, also highly tamper-resistant.

If the safety turning latch is to be actuated, the functionality according to the first results FIGS. 3a, 3b and 3c , With a corresponding key, which is not shown, but is formed according to the prior art and is suitable to engage over the square 7 due to an internal square opening, axial pressure is exerted on the guide member 20, which is against the force of the spring 19 after moved down. In this case, drive the pins 21, 22 of the guide member 20 in the locking grooves 10 down. The upper part of the inner bore of the guide part 20 comes in a region of the lock core 6 with a circular circumference, which means that the lock core 6 is now relative to the guide member 20 and thus against the housing 1 rotatable.

If the rotation of the lock core 6, so gives the representation as they are in the FIGS. 4a, 4b and 4c you can see. By rotation of the lock core 6 has taken a 90 ° twisted position. As shown in the figures, a notch 26 is formed on the front edge of the housing, and a notch 27 is formed in the front edge of the square 7. While in the closed position shown in FIG Fig. 2a and also the operating position according to Fig. 3a the notches 26 and 27 are aligned, is now according to Fig. 4a to see that the square 7 and thus the notch 27 were rotated by 90 °. Accordingly, the locking tongue was rotated by 90 °.

The pins 21, 22 of the guide member 20 have thereby moved along a guide slot on the outer circumference of the lock core 6, which was rotated relative to the guide member 20 and thus with respect to the housing 1 by 90 °. The flap, the housing, the door or the box or the like are now open because the locking tongue has been rotated to a corresponding opening position. The key, which receives the square inside and is designed so that the guide member 20 has been depressed, can now be deducted upwards.

It then results in the position according to the FIGS. 5a, 5b and 5c , As can be seen there, now the square 7 and thus the lock core 6 relative to the housing 1 is rotated by 90 °. The notches 26 and 27 are perpendicular to each other, the locking tongue 15 is in a rotated position by 90 °, for the purpose of explanation here called the open position.

In addition, the pins 21, 22 have traveled along a guide slot on the lock core 6 and after removing the key, not shown, the guide member 20 is pressed by the force of the spring 19 upwards. The pins 21, 22 now pass into locking grooves 10 on the outer periphery of the lock core 6, which are higher than those in the FIGS. 2c . 3c shown. Already after twisting this is in the FIGS. 4c to recognize.

As a result, the guide member 20 reaches a higher position, so that the square 7 is completely received in the square inner bore 23 of the guide member 20.

It is obvious, if you have the FIGS. 2a and 5a compares with each other that it is already clear from a distance and with a single glance whether the safety rotating latch is in an open or a closed position, which can be favored in particular in that the components can be colored. If, for example, the outer circumference of the guide part 20 is lifted off in color, its raised position is immediately in accordance with Fig. 5a recognizable. Also, the notches 26 and 27 can be colored. Colored contrast enhances the ability to recognize the closed state, but the mere position of the elements relative to one another makes it possible to see the closed state at a glance.

The described embodiment is merely illustrative and not limiting.

LIST OF REFERENCE NUMBERS

1

casing

2

external thread

3

mother

4

disc

5

Housing interior

6

lock core

7

square

8th

square

9

rejuvenated area

10

locking groove

11

guide link

12

attack

13

fixing nut

14

disc

15

locking tongue

16

Square hole

17

disc

18

disc

19

feather

20

guide part

21

pen

22

pen

23

Square inner bore

24

Housing bottom

25

poetry

26

score

27

score

Claims (10)

Security latch with a housing, a lock core and a locking tongue, wherein the lock core rotatably disposed in the housing and the locking tongue rotatably connected to the lock core at its end projecting through the housing, characterized by a sleeve-shaped guide member, which rotatably and against spring force for taking various axial positions longitudinally is arranged in the housing and is penetrated by the lock core, wherein the lock core against the guide member in at least one axial position of the guide member is rotatable and rotatable in at least one other axial position of the guide member. Safety crucible according to claim 1, characterized in that the locking core has regions with different diameters over its axial length. Safety crucible according to claim 2, characterized in that the locking core on the outer wall of at least one region has locking grooves. Safety twistlock according to claim 3, characterized in that the latching grooves extend in the longitudinal direction of the lock core. Safety rotating bolt according to one of the preceding claims, characterized in that the guide part has cam-facing cams. Safety locking bolt according to claim 5, characterized in that the locking core has stop edges which limit, in cooperation with the cams of the guide part, a rotation of the locking core. Safety locking bolt according to claim 5, characterized in that the cams are formed by pins inserted into the guide part. Safety crucible according to one of the preceding claims, characterized in that the guide part has an end face in a through the spring force caused axial end position of the guide member is positioned substantially flush with an edge surface of the housing. Safety rotary latch according to claim 8, characterized in that the end face is positioned in an inserted against the spring force axial end position of the guide member in an inserted into the housing position. Safety rotating bolt according to one of the preceding claims, characterized in that between the guide member and the lock core, a guide cam / guide slot connection is formed.

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