EP0173830B1 - Device for locking and unlocking turnstiles - Google Patents

Abstract

1. Device for locking and unlocking turnstiles with a vertical axis of rotation and unidirectional lock, in which there are provided a fixed bridging piece (1) arranged above or below the turnstile, a locking disc (2), mounted to rotate, with recesses (12; 16) distributed over its circumference and held fast against rotation on the axle (3) of the turnstile, and two bolts held at the bridging piece (1), and capable of being moved axially into and out of engagement with the recesses (12) of the locking disc (2) and controllable activating magnets (13) that grip the bolts, characterised in that the two bolts are each designed as catches (8, 9) in the shape of double-armed pivoted levers, and that the pivoted levers are mounted on the bridging piece (1) to swivel about axes of rotation (6a, 7a) parallel to the plane of the locking disc (2).

Description

The invention relates to a device for locking and unlocking turnstiles with a vertical axis of rotation and directional lock, in which a fixed bridge part arranged above or below the turnstile, a rotatably mounted locking disc on the axis of the turnstile, held in a rotationally secure manner with recesses distributed over its circumference and two locking members held on the bridge part and brought into and out of engagement in the recesses of the locking disk in the axial direction with oppositely acting locking lugs and controllable actuating magnets acting on the locking members are provided.

Devices are known in which radially outside the locking disc rotatably mounted on a stationary bridge part locking elements in the form of thrust members are provided, which form the extension of anchors, which in turn are arranged diametrically opposite at a radial distance from the locking disc and the corresponding radial engage locking recesses on the lock washer. By appropriate control of the electromagnets in conjunction with electrical switches actuated by the locking disk, the device can be operated in such a way that the lock is only released over a turn of the turnstile of 90 ° in one direction or the other, after the rotation has taken place The turnstile is locked again at 90 ° until it is released by actuating one of the magnets.

In the known device, the locking disk is designed in multiple layers, because in addition to the locking members engaging radially in the corresponding recesses of the locking disk, a locking device cooperating with the locking disk is required, which ensures that the turnstile returns to that after each release and rotary movement by 90 ° Position reached in which the locking members engage in the locking disc. For this purpose, gas pressure springs are generally used, which cooperate with correspondingly extensive control curves of the locking disk.

The known devices are relatively expensive in terms of their structure and space requirements. By connecting the locking members to the armatures of the lifting magnets, the locking members can only absorb relatively small forces if the turnstiles should be actuated by force using the known devices. The locking members form relatively long lever arms when the turnstiles are operated by force, which are held at one end by their connection to the armatures of the magnets in the magnet, while relatively large forces act on the other end when the turnstile is operated by force, so that very large moments are exerted on the locking members. In order to be able to absorb or transmit forces at all from the locking elements when the turnstiles are actuated by force, it is necessary to provide additional bearings for the locking elements, in which these locking elements must, however, be guided with play, since otherwise the locking elements become jammed when the actuating element is actuated Magnets or when moving to the different positions is to be feared.

A device of the type described at the outset is also known (DE-A-2731 171), in which locking members which run parallel but diametrically with respect to the axis of rotation of the turnstile are provided in the form of elongated locking bolts which are held in guide bushes which are open at the top and bottom are, which in turn extend through the entire height of the cross member. Lifting magnets are held at the end of the guide bushes facing away from the locking disk, the armature of which is connected to one of the locking bolts.

The known arrangement leads through the locking members projecting from the locking disk with the surrounding guide sleeves and the lifting magnets provided above the guide sleeves to a large overall height and thus a complex construction. When the turnstile is actuated by force, the locking bolts protruding perpendicularly from the locking disk can only absorb small forces without the risk of the guide sleeves being deformed. Since the locking bolts in the guide sleeves only have to be guided with a small amount of play, there is concern with slight deformation of the guide sleeves that the locking bolts jam in the sleeves and the turnstile thus becomes inoperative.

The invention is based on the object of developing a device of the type mentioned in the introduction such that, with a reduction in the structural outlay, the turnstile is secured considerably better against violent actuation and a compact design of low height is achieved.

To achieve the above object, the invention provides that the two locking members are each designed as pawls in the form of double-armed pivot levers and that the pivot levers are pivotally mounted on the bridge part about axes of rotation running parallel to the plane of the locking disc.

Due to the aforementioned training, a very compact construction of the device and extremely short distances of the locking members for locking and unlocking are achieved, which means that magnets with correspondingly short distances of the armature can be used. If an attempt is made to turn the turnstile by force, the forces absorbed by the pawls are transmitted in the longitudinal direction of the pawls to the axes of rotation or bearing points running on the bridge part, so that the pawls are not deformed even when extremely large rotational forces act on the turnstile no moments have to be transferred to the bearing points. In addition, the locking members above or protected under the locking disk and can be accommodated from the outside only with great difficulty. This also considerably improves the security value of the turnstile.

The pawls can be arranged so that they each engage in different recesses of the locking disk offset by 90 ° or 180 °. A particularly advantageous embodiment results, however, if the pawls are offset directly adjacent to one another in parallel and are arranged with mutually facing locking lugs such that they engage in the same recess in the locking disk. In this way, the bearing points for the locking members can be arranged in a common support of the bridge part provided above or below the locking disk, which can also serve at the same time for fastening the actuating magnets. This further simplifies the design.

It is particularly expedient if the lever arms facing away from the locking lugs are not directly connected to the magnets of armatures, but are connected in a geared manner via a lifting linkage to the armatures of electromagnets, which in turn are equipped with a return spring.

A mechanical separation of the locking members from the electromagnet is achieved by the aforementioned design, so that the forces acting on the locking members cannot be transmitted to the armature of the electromagnet. On the other hand, the lifting linkage, however, transmits the movements of the armature of the electromagnet to the locking members, only slight rotary movements of the armature being required to transfer the locking members into the different positions. The return spring provided in the electromagnet also acts on the locking members at the same time, so that the springs which are otherwise necessary and which act directly on the locking members are not required for their return after actuation by the magnet and can be accommodated within the magnet in a protected manner.

It is advantageous if the locking disk is equipped with recesses offset by 45 ° on the circumference for the engagement of the pawls and additionally has recesses offset radially on the circumference by 90 ° for the engagement of a resilient latching device.

Because the locking members engage with their locking lugs axially in the recesses of the locking disc, these recesses can be provided outside the edge region of the locking disc, so that the edge region of the locking disc is available for the additional recesses offset on the circumference for the engagement of the resilient locking device .

The arrangement of the recesses cooperating with the locking members, each offset by 45 ° on the circumference of the locking disk, has the advantage that after unlocking the turnstile in one direction or the other and rotating the cross by a little more than 45 °, the unlocked effect is already canceled can and this makes it impossible to turn the locking cross back into the starting position, because the locking bolts engage in the recess of the locking disk which has just been run over when it turns back. In this way it is ensured that a rotary movement of the turnstile is always possible in one direction only, and in each case only by 90 °, and thus the passage of the turnstile is only guaranteed by one person in one direction or the other.

• Fig. 1 die Seitenansicht einer erfindungsgemäss ausgebildeten Vorrichtung,
• Fig. 2 die Draufsicht auf die Vorrichtung nach Fig. 1,
• Fig. 3 einen Teilschnitt entlang der Schnittlinie A-B der Fig. 1,
• Fig. 4 einen Schnitt entlang der Schnittlinie C-D der Fig. 2.

The drawing shows an embodiment of the invention. Show it:

• 1 is a side view of a device designed according to the invention,
• 2 shows the top view of the device according to FIG. 1,
• 3 shows a partial section along the section line AB of FIG. 1,
• 4 shows a section along the section line CD of FIG. 2.

In the figures, the stationary part above or below the turnstile and on the support frame for the turnstile, not shown in the drawing, is designed as a cross-sectionally U-shaped profile part. The bridge part 1 carries a locking disk 2, which is held on the axis 3 of the turnstile shown in FIG. The axis 3 of the turnstile is rotatably held in a flange bearing 4 provided on the bridge part 1.

A cross-sectionally U-shaped profile part 5 with fastening flanges 5a is fastened on the bridge part 1 by means of retaining screws, in which the most important parts for locking and unlocking the turnstile are accommodated.

Thus, 5 bearing blocks 6 and 7 are provided in the U-shaped profile part 6 for axes of rotation 6a and 7a running parallel to the plane of the locking disk (FIG. 3), which serve to mount pawls 8 and 9 which are designed as double-armed pivot levers. The pawls 8 and 9 have opposing locking lugs 10 and 11, with which they engage in the example shown in the same recess 12 of the recesses arranged on the circumference of the locking disk 2. For this purpose, the pawls 8 and 9 are arranged in parallel, but offset from one another and with mutually facing locking lugs, as can be seen particularly clearly from FIG. 3.

To actuate the pawls 8 and 9 serve on the U-shaped profile part 5 laterally above the mounting tabs 5a held rotary magnets 13, the armature of which is connected via a lifting linkage 14 or 15 to the pawls 8 and 9 in such a way that the rotary movements of the Anchor of the magnets 13 on the Attack locking lugs 10 and 11 opposite ends of pawls 8 and 9. Return springs, not shown in the drawing, are provided in the rotary magnets, which ensure that after actuation of the pawls 8 and 9 by the magnets, the pawls 8 and 9 are returned to the starting position.

From FIG. 2 it can be seen particularly clearly that the locking disk 2 is equipped with recesses 12 arranged at 45 ° to one another and that recesses 16 are additionally provided on the radial circumference of the locking disk, which work together with a resilient locking device , which in the example shown consists of a gas pressure spring 17. In the example shown, this is connected with its free end, which engages in the recesses 16, to a pivot lever 18, which in turn is rotatably mounted on a pin 19.

When one or the other rotary magnet 13 is actuated, the pawl 8 or 9 assigned to it is transferred into the release position, as is shown in FIG. 4 for the pawl 9. In this position, the locking disc 2 can be pivoted counterclockwise, i.e. the turnstile can be freely rotated in this direction since the pawl 8 with its locking lug 10 cannot exert a locking effect in this direction. After a rotary movement of the turnstile by a little more than 45 °, the effect of the rotary magnet 13 cooperating with the pawl 9 is canceled by a switching lug 20 (FIG. 2) provided on the circumference of the locking disk 2 with a switch 21 held stationary on the bridge 1 cooperates. At the moment of interaction of the switch 21 with the switching lug 20, the pawl 9, under the action of the return spring, tends to return to the locking position, but is prevented from doing so when its locking lug 11 rests on the locking disk 2. When the turnstile is turned back, however, the mentioned locking lug 11 of the pawl 9 arrives in the recess 12 that already comes under the locking lug at a small angle of rotation, so that the locking cross is completely locked in the 45 ° intermediate position.

In this way it is prevented that the locking cross can be turned back after an angle of rotation of 45 ° has been exceeded. This is important in order to avoid that such a reciprocating rotary movement in both the one and in the other direction can get people from one side to the other through the locking cross.

In the event of an attempt to turn the turnstile by force, the locking disk 2, via the locking lugs 10 and 11 and the locking pawls 8 and 9, only transmit forces acting in the longitudinal direction of these locking pawls to the bearing blocks 6 and 7, which can be made relatively solid and thus capable are also able to absorb large forces. No force is exerted on the rotary magnets 13 even when attempting to turn the turnstile by force.

For the actuation of the pawls 8 and 9, it is evident that only extraordinarily small swiveling distances are required, so that a very solid and robust construction results with extraordinarily simple parts of the device.

Claims (5)

1. Device for locking and unlocking turnstiles with a vertical axis of rotation and unidirectional lock, in which there are provided a fixed bridging piece (1) arranged above or below the turnstile, a locking disc (2), mounted to rotate, with recesses (12; 16) distributed over its circumference and held fast against rotation on the axle (3) of the turnstile, and two bolts held at the bridging piece

(1), and capable of being moved axially into and out of engagement with the recesses (12) of the locking disc (2) and controllable activating magnets (13) that grip the bolts, characterised in that the two bolts are each designed as catches (8, 9) in the shape of double-armed pivoted levers, and that the pivoted levers are mounted on the bridging piece (1) to swivel about axes of rotation (6a, 7a) parallel to the plane of the locking disc (2).

2. Device according to claim 1, characterised in that the catches (8, 9) are arranged directly adjacent and displaced in parallel to each other, and with detents (10, 11) facing each other, so that each engages with the same recess (12) of the locking disc (2).

3. Device according to claim 1 or 2, characterised in that the lever arms facing away from the detents (10, 11 ) are linked via lifting rods (14) to the armatures of rotary electromagnets (13), which are in turn provided with a restoring spring.

4. Device according to any one of the foregoing claims, characterised in that the locking disc (2) is furnished with recesses (12), around the circumference, successively displaced by 45°, for the catches (8, 9) to engage with, and comprises additional recesses (16), around the circumference, successively displaced by 90°, for a spring- mounted catching device (17) to engage with.

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