EP0597170B1 - Rotary bolt locking - Google Patents

Description

The invention relates to a rotary bolt lock for doors or windows, which cooperates with a central lock via a drive rod and which has a rotatable bolt about an axis running at right angles to the door or window plane, which has a drive rod and a drive rod with a rear part of the Bolt connecting link is rotatable from an open position to a closed position and back, wherein in the open position the bolt is essentially within the door or window sash and in the closed position a front bolt part engages in a locking part fastened to the frame, the bolt within one the drive rod overlapping housing is mounted with a housing cover, and the housing has a parallel to the drive rod guide for a slide which is connectable to the drive rod and which is connected via a bolt to the bolt, the bolt in a transverse to the Bew direction of the slide extending slot is guided in the slide.

A rotary bolt closure of this type is known from DE-GM 91 06 906. With this closure, the front bolt part is hook-like and engages behind a wall of the closing part when engaging in the shooting part. The bolt can be rotated around a fixed, heavy-duty axis of the housing, and the rotary movement by approx. 90 ° takes place via a slide connected to the drive rod and guided in the housing and a bolt that is located on the rear part of the rotary bolt and at a horizontal distance from the axis is fastened and is guided in an elongated hole in the slide which is perpendicular to the drive rod. Because of the favorable leverage, the bolt can engage the shooting part with great force. For trouble-free interaction with a central lock To ensure, it is necessary in the known rotary bolt lock that the central lock is designed according to patent DE 31 48 030 C2. This central lock has a gear transmission which is arranged between a conventional lock cylinder and an intermediate member provided with a toothed rack and moving the drive rod. This gear transmission is designed so that there is a free passage between a drive sprocket and an output sprocket, which is such that, starting from a zero position of the sprocket connected to the locking cylinder, this sprocket in both directions by an angle can be rotated by, for example, 120 °, after which the intermediate link and the drive rod are only entrained. In this way, the drive rod has a defined start and end point of its movement, regardless of the lock cylinder used in each case and regardless of the angle of rotation of the lock bit of common lock cylinders. In the known central lock, the push-back forces acting on the drive rod are absorbed.

EP 0 411 271 A1 discloses a swivel bolt lock moved by a central lock via a drive rod, in which the bolt can be rotated about an axis running at right angles to the door or window plane. While the latch according to DE-GM 91 06 906 is designed as a two-armed lever, the latch according to EP 0 411 271 A1 is designed as a one-armed lever. The pivoting movement by approx. 45 ° takes place via a slide connected to the drive rod, which has a control slot into which a pin attached to the bolt engages. The control slot has a diagonally running area and at both ends there is an adjoining slot section running parallel to the drive rod. The operation of this bolt lock is as follows: When the bolt is in the open position, the pin is in the slot section running parallel to the drive rod. At the beginning Drive rod displacement, combined with a downward displacement of the slide, the pin emerges from the slot section running parallel to the drive rod movement and enters the diagonally running slot section. By further downward movement of the drive rod and the slide, the locking movement of the bolt takes place until the pin exits the diagonal slot section and enters the slot section running parallel to the drive rod. The pin is supported in this position in the slot section running parallel to the drive rod. In this position, the swivel bolt is secured against being pushed back. With this bolt lock, the forces acting in the slide and its control slot and the wear caused thereby are relatively large because of the relatively unfavorable lever ratios.

The invention has for its object to form a rotary bolt lock of the type mentioned so that while maintaining its advantages at the beginning and at the end of the lifting or lowering movement of the drive rod, the position of the drive rod has no influence on the position of the bolt and the bolt already before Termination of the maximum lifting or lowering movement of the drive rod has reached its full closed position or open position, wherein in the closed position, push-back forces acting on the bolt are not transmitted to the drive rod.

This object is achieved in that the bolt is guided on both sides in two congruent control cams which are attached to the wall of the housing and the opposite wall of the housing cover, the control cams being composed of a constant distance around the bolt axis over an angle of 90 ° running middle part and two end sections, which run radially to the bolt axis and at an angle of 45 ° to the horizontal and that the bolt is guided in the bolt in an elongated hole, which in the open starting position and locked End position of the bolt also extends at an angle of 45 ° to the horizontal, so that at the beginning and at the end of the lifting or lowering movement of the slide, the bolt in the slot of the bolt runs freely and the movement of the slide has no influence on the position of the bolt.

In the rotary bolt lock according to the invention, the drive rod forces are transmitted from the slide via the bolt to the bolt, while the control cams for the bolt in the housing walls are completely unloaded and are therefore not subject to wear. When the bolt has reached its full closed or open position, the bolt can move freely in the slot's elongated hole until the maximum lifting or lowering position of the drive rod is reached. The lock cylinder in the central lock can then be turned back by an angle that is necessary to reach a key withdrawal position.

The design of the rotary bolt lock according to the invention has the advantage that the bolt cannot be pushed back from its closed position from the outside because the bolt presses the bolt against the radially extending end section of the cam and these forces are absorbed by the walls of the housing and the housing cover.

Fig. 1

eine Längsschnittansicht des Drehriegelverschlusses nach der Erfindung,

Fig. 2

eine Ansicht nach der Schnittlinie II-II in Fig. 1,

Fig. 3

eine Seitenansicht und

Fig. 4

eine Stirnansicht des Riegels,

Fig. 5

eine Ansicht der Innenseite des Gehäusedeckels mit Steuerkurve,

Fig. 6

eine Ansicht der Außenseite des Gehäuses,

Fig. 7

eine schaubildliche Darstellung einer vereinfachten Ausführungsform des erfindungsgemäßen Drehriegelverschlusses.

In the following description, exemplary embodiments of the invention are explained in more detail with reference to the drawings. The drawings show in

Fig. 1

2 shows a longitudinal sectional view of the rotary latch lock according to the invention,

Fig. 2

2 shows a view along section line II-II in FIG. 1,

Fig. 3

a side view and

Fig. 4

a front view of the latch,

Fig. 5

a view of the inside of the housing cover with control curve,

Fig. 6

a view of the outside of the housing,

Fig. 7

a schematic representation of a simplified embodiment of the twist lock closure according to the invention.

The rotary bolt lock shown in FIGS. 1 and 2 closes a wing part 2 with respect to a frame part 1. The rotary bolt lock has a bolt 5 which can be rotated about the rigid axis 6. By means of a drive rod 12 and a slide 8, 8 'connecting the drive rod 12 to a rear part 15 of the bolt 5 via a bolt 10, the bolt 5 can be rotated from an open position into the illustrated closed position and back. In the open position, the latch 5 is located essentially within the wing. In the closed position shown in FIGS. 1 and 2, a hook-like locking part 14 provided with a wedge surface 20 engages in a locking part 16 fastened to the frame 1 and thereby engages behind a wall of the locking part 16 or an additional locking plate 17. In the drive rod 12 and In the faceplate 3 recesses 4 are incorporated, through which the bolt 5 extends.

The bolt 5 designed as a two-armed lever has essentially the shape of a semicircle and is mounted within a housing 7 with a housing cover 7 '. The housing 7 with the housing cover 7 'has a straight guide for the slide, which is composed of slide parts 8, 8' arranged on both sides of the bolt 5 and which can be inserted with a lug 11 into a recess 22 in the drive rod 12. The two slide parts 8 and 8 'each have an elongated hole 9 running at right angles to the drive rod 12, in which the bolt 10 is guided, which is guided in the bolt 5 in a second elongated hole 35 extending radially to the bolt axis 6. The bolt 10 is guided on both sides in two control cams 40 which are attached to the wall 43 of the housing 7 and the opposite wall 44 of the housing cover 7 '. The control curves 40 are composed from a central part running at a constant distance around the bolt axis 6 over an angle of 90 ° and two end sections 41 and 42 which run radially to the bolt axis 6 and at an angle of 45 ° to the horizontal. The slot 35 extends in the open starting position and locked end position of the bolt 5 at an angle of 45 ° to the horizontal, so that at the beginning and at the end of the lifting movement of the slide, the bolt 10 runs freely in the slot 35. The housing 7 or the housing cover 7 'has screw-on flanges 23 and 24 with which the housing 7, 7' can be screwed onto the faceplate 3.

2 shows, to form the axis of rotation 6 of the bolt 5 on the inner wall of the housing 7 and / or the inner wall of the housing cover 7 'stub axles are cast, which engage centering.

As shown in FIG. 4, the hook-like nose entering the closing part 16 is provided on both sides with a wedge surface 20, so that this nose runs into the closing part 16 without resistance even when the bolt 5 is not exactly aligned with the closing part 16, and when Turning the bolt 5 is pressed over the wedge surface 20 into the correct position in the locking part 16. Since the bolt 5 rotates about a fixed axis 6, the surface of the hook-like projection engaging behind the locking bar 17 lies against the locking plate 17 from behind and causes the door or window leaf to tighten when it is closed.

In the embodiment according to FIG. 1, the latch 5 engages with its front hook-like part 14 from above or, depending on the arrangement, also from below behind the closing plate 17. When the latch 5 has been rotated by 90 ° from its open to its closed position , then a reliable locking is achieved. It is also possible not to arrange the hook-like projection on the end face of the bolt 5, but on one side of the bolt.

In the closed position of the bolt 5 shown in FIG. 1, the stub 10 'of the bolt 10 is in the upper straight, radially extending end section 42 of the control cam 40. In this position, the bolt 5 is blocked against turning back, so that the closure also prevents it from being broken open is secured. The end section 42 runs parallel and coaxially to the slot 35 in the bolt 5, so that at the beginning of the opening movement of the drive rod 12 and the slide 8,8 ', the bolt 10 is moved obliquely downwards and forwards along the end section 42 and thereby runs freely in the slot 35 . When the bolt 10 has reached the lower end of the elongated hole 35 and the stub 10 'is located in the central part of the control curve 40 which runs at a constant distance from the axis 6, the bolt 5 is rotated by 90 ° until the stub 10' of the bolt 10 has reached the other end section 41 of the control cam 40 and the bolt 5 is in the fully open position. With further downward movement of the drive rod 12 and the slide 8, 8 ′, the bolt 10 with the stubs 10 ′ is pressed along the straight end section 41 while it is running freely in the elongated hole 35 of the bolt 5. As long as the bolt 10 is guided in one of the end sections 41, 42 of the control cam 40, movement of the bolt 5 is blocked.

Because the control cams 40, 41, 42 only have to absorb small forces, it is advantageous if the diameter of the stub 10 ′ of the bolt 10 guided therein is less than 3 mm. Because the pin 10 is guided on both sides in a relatively narrow guide slot, the pin 10 can be guided precisely and yet smoothly.

The interior view of the housing cover 7 ′ shown in FIG. 5 clearly shows the control curve 40 with the effective area running over an angular range of 90 ° on a circular path around the locking axis 6 and the two adjoining, radially extending end sections 41 and 42. Furthermore, a guide rib 19 for the vertical guidance of the slide 8 can be seen. In the illustrated embodiment, the screw-on flanges 23, 24 are arranged on the housing cover 7 '.

6 shows the outside of the housing 7 with the control curve 40, 41, 42 shown in dashed lines.

FIG. 7 shows a simplified embodiment of the rotary bolt lock, in which in particular the shape of the bolt 50 differs from that previously described. The rear part 15 of the bolt 50 ends just behind the slot 35, so that the depth of the housing 7 can be reduced due to the smaller pivoting range. Furthermore, the front part 14 of the bolt 50 has no hook-like nose and does not engage behind the closing part. The front part 14 of the bolt 50 is, however, also provided with a wedge surface 20 here, so that the bolt 50 aligns itself automatically when closing to the closing part.

In this embodiment, the screw-on flanges 23, 24 are arranged on the housing 7. The guide rib 19 'for the vertical guidance of the slide 8 is wider here and extends over the entire length of the housing 7. In the illustration, the drive rod 12 ends just above the recess 22. However, it can also pass through several closures arranged one below the other, in which A recess 4 is to be arranged in the area of the bolt penetration in the drive rod 12 (see FIG. 1).

Otherwise, all components have the same functional features as those of the first embodiment. The housing cover 7 'is not shown in Fig. 7.

Reference list

1

Frame part

2nd

Wing part

3rd

Faceplate

4th

Passage

5

bars

6

Bolt axis,

7

casing

7 '

Housing cover

8th

Slider

8th'

Slider

9

Elongated hole in the slide

10th

bolt

10 '

Bolt stub

11

nose

12th

Connecting rod

14

front part of the latch

15

rear part of the latch

16

Striker

17th

Striker

19th

Guide rib

19 '

Guide rib

20th

Wedge surface

20 '

Wedge surface

22

Recess

23

Screw-on flange

24th

Screw-on flange

30th

nose

35

Elongated hole in the bolt

40

Control curve

41

upper end section

42

lower end section

43

Wall of the housing

44

Wall of the housing cover

50

bars

Claims (4)

1. A rotary locking member lock for doors or windows, having a locking member (5, 50) which is rotatable about an axis (6) extending at a right angle to the plane of the door or window and which is rotatable from an open position into a closed position and back by means of a drive bar (12) and a member which connects the drive bar (12) to a rear portion (15) of the locking member (5, 50), wherein in the open position the locking member (5, 50) is disposed substantially within the movable door or window portion and in the closed position a front portion (14) of the locking member engages into a lock portion (16) which is fixed to the frame (1), wherein the locking member (5, 50) is mounted within a housing (7) which engages over the drive bar (12), with a housing cover (7'), and the housing (7, 7') has a guide parallel to the drive bar (12) for a slider (8, 8') which can be connected to the drive bar (12) and which is connected by way of a pin (10) to the locking member (5, 50), wherein the pin (10) is guided in a slot (9) which extends in the slider (8, 8') transversely to the direction of movement of the slider (8, 8'), characterised in that the pin (10) is guided at both sides in two aligned control cams (40) provided on the wall (43) of the housing (7) and the oppositely disposed wall (44) of the housing cover (7'), wherein the control cams (40) are composed of a central portion which extends at a constant spacing around the axis (6) of the locking member over an angle of 90° and two end parts (41 and 42) which extend radially with respect to the axis (6) of the locking member and at an angle of 45° relative to the horizontal and that the pin (10) is guided in the locking member (5, 50) in a slot (35) which, in the opened starting position and the locked final position of the locking member (5, 50), also extends at an angle of 45° relative to the horizontal, so that at the beginning and at the end of the lifting or lowering movement of the slider (8, 8') the pin (10) moves freely in the slot (35) of the locking member (5, 50) and the movement of the slider (8, 8') has no influence on the position of the locking member (5, 50).
2. A rotary locking member lock according to claim 1 characterised in that the front portion (14) of the locking member (5) has a hook-like nose which in the closed position engages behind a wall of the lock portion (16).
3. A rotary locking member lock according to claim 1 or claim 2 characterised in that the pin (10) is guided in the control cams (40, 41, 42) by way of cylindrical stumps (10') of reduced diameter.
4. A rotary locking member lock according to claim 3 characterised in that the diameter of the stumps (10') and the width of the control cams (40, 41, 42) is equal to or less than 3 mm.

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