EP1908902A2 - Single-point bolting device in particular for switching cabinets - Google Patents

Abstract

Switch cabinet has a body and lock (12) with switch bolt (14) as well as lock holder fixed to door with catch bolt which uses a switch bolt for locking. Rotatable closing switch bolt (14) as well as locking pin (11) in both locked and open positions are pre-tensioned using a rocker spring (17). A rotatable security lever (19) pre-tensioned by a spring in its blocked position to block the turning movement of the catch bolt is provided. It is pivoted by an electro-magnet (24), in order to set the readiness of the switch bolt to open, against the force of the spring into the switch bolt's free position.

Description

The invention relates to a locking device, in particular for control cabinets in the form of a single-point lock.

Such single-point latches are known in the form of so-called sash closures, such as those in U.S. Patent Nos. 4,378,355 DE 298 06 963 described. Here, a closure device with a rotatable tongue arranged thereon is attached to the door, which engages behind a part of the cabinet body and thereby locks the door with the cabinet body. This has the disadvantage that each actuation of the cam lock closure by means of a key or other operation requires to turn the tongue in its Öffnungsbeziehungsweise closed position and thus to be able to open the door or to keep closed. Such actuation is not desirable in all applications.

The invention has for its object to provide a one-point locking device available, in which the closing and opening of the door by simply pressing or pulling on the door, while at the same time a secure locking of the door should be given if necessary.

The solution to this problem arises, including advantageous refinements and developments of the invention from the content of the claims, which are adjusted to this description.

The invention provides for this purpose a locking device consisting of a mounted on the cabinet body and a lock having lock and a mounted on the door lock holder with a locking latch to be locked locking pin, the rotatably mounted locking latch both in their locking pin detecting the locking position is biased in its open position by means of a tilt spring and wherein a rotatable and biased by a spring in its blocking position for the locking latch locking lever for blocking a rotational movement of the latch is provided, which is energized by an energized for setting an opening readiness of the closing latch electromagnet against the force of Spring is pivotable in its release position for the latch.

As far as a closure holder with a locking pin arranged thereon is attached to the door, only the door or the locking pin carried by the closure holder needs to be brought into engagement or out of engagement with the latch of the lock mounted on the cabinet body for closing or opening the door. Since the latch is biased into its two functional positions, ie the locking position and the open position, each by a locking function of the latch causing tipping spring, results in a self-holding effect of the locking device both in the closed position of the door and in the open position of the latch, so that the Door can be easily closed by inserting the locking pin in the held in the open position the closing latch. The The latch is secured by a spring-biased safety lever in each case in its closed position, so that the door can not be mounted, but is provided to hold the intended safety lever out of engagement with the latch by means of a current-carrying electromagnet and thus to make an opening readiness of the latch, so that the Door opening can be made by pulling on the door with the associated overcoming of the force of the tilt spring.

According to one embodiment of the invention, provision is made for a microswitch assigned to the closing latch to be disposed in the lock for the purpose of emitting a signal. This has the advantage that the position of the latch can be queried by a signal such as the lighting of a lamp. Thus, the respective position of the latch can be displayed in its open position as well as in the locked position, so that it can be determined from outside the cabinet, if the door can be closed by pushing, because the latch is in its open position, or if the door is closed and the latch is in the locked position.

According to one embodiment of the invention may be provided that the microswitch is actuated by the latch in its open position. At the same time, this also makes it possible to additionally emit a signal for the indication of the locking position of the closing latch.

With regard to the securing of the locking latch in its locking position is provided according to an embodiment of the invention that the locking lever rests in its blocking position against a located on the outer periphery of the latch paragraph.

With regard to an easy operation and function of the locking device is provided according to an embodiment of the invention, that cooperating with the locking pin inner surfaces of the in the Trap formed receiving opening for the locking pin are designed such that by pivoting the closure holder with locking pin, the pivoting of the latch in its locked position and exerted by the lock holder with locking pin train the pivoting of the latch is effected in its open position.

Fig. 1

eine Verriegelungsvorrichtung in einer Perspektivansicht ihrer auseinander gezogen dargestellten Einzelteile,

Fig. 2

die Verriegelungseinrichtung gemäß Figur 1 im Zusammenbau in der Öffnungsstellung ihrer Schließfalle,

Fig. 3

die Verriegelungseinrichtung gemäß Figur 2 in der Verriegelungsstellung bei blockierter Schließfalle,

Fig. 4

die Verriegelungseinrichtung gemäß Figur 2 beziehungsweise 3 in der Verriegelungsstellung bei bestehender Öffnungsbereitschaft der Schließfalle.

In the drawing, an embodiment of the invention is reproduced, which is described below. Show it:

Fig. 1

a locking device in a perspective view of its exploded parts,

Fig. 2

the locking device according to Figure 1 in the assembly in the open position of its latch,

Fig. 3

2 in the locking position when the locking latch is locked,

Fig. 4

the locking device according to Figure 2 or 3 in the locking position in the case of existing opening readiness of the closing latch.

The apparent from Figure 1 locking device consists initially of a not shown on a door of a particular cabinet to be mounted closure holder 10 which carries a locking pin 11.

At the also not shown cabinet body of the relevant cabinet, a lock 12 can be fastened, which consists of two housing halves 13. In the interior of the housing, a closing latch 14 is rotatably mounted about a housing-fixed bearing pin 15 which has a receiving opening 16 for the locking pin 11. The closing latch 14 is arranged in the housing 13 such that in the still too explanatory opening position of the latch of the locking pin 11 of the shutter holder 10 is inserted into the receiving opening 16 of the latch 14, while in the locked position, the latch 14 holds the locking pin 11 in its receiving opening 16. The closing latch 14 is acted upon by a tilt spring 17, which biases the latch 14 both in its open position as well as in its locking position and in this case passes through a dead center. In the two end positions, the tilt spring 17 is held by housing stops 18 in a defined position. Due to the bias of the tilt spring 17 results in a locking action for the latch 14 in the two end positions.

In the housing 13 of the lock 12, a locking lever 19 is further rotatably mounted about a bearing pin 22 which has a blocking lug 20 at its end facing the latch 14, while at its opposite end relative to the bearing pin 22 an actuating lug 21 is present. In the area of the actuation lug 21 engages a spring 23 which is supported on the housing and biases the safety lever 19 into its blocking position for the latch 14, in which the actuation lug 21 is in engagement with a blocking recess 28 provided on the outside of the latch 14. Furthermore, the actuating lug 21 is associated with an electromagnet 24, which attracts in the energized state, the actuating lug 21 to itself and thereby pivots the locking lever 19 against the action of the spring 23 in a release position for the latch.

In addition, a microswitch 25 is still arranged in the housing 13 such that the microswitch 25 is actuated by an eccentric projection 30 located on the latch 14 in the open position of the latch. The microswitch 25 is connected via an electrical supply line 26 to a plug 27 arranged outside the housing, so that the signal emitted by the microswitch 25 during its switching can be tapped on the plug 27.

In the functional position shown in Figure 2, the latch 14 is in its open position, in which the open side of its receiving opening 16 facing the closure holder 10 with locking pin 11. In this position, the latch 14 is held by the tilt spring 17. At the same time, the eccentric projection 30 actuates the microswitch 25 so that a signal can be tapped off the plug 27 so that the closing latch 14 is in the open position, so that the door with the closure holder attached thereto can be closed. This can be done for example by displaying a green lamp.

Now, if the door is closed by bringing the shutter holder 10 to the lock 12, the locking pin 11 engages in the receiving opening 16 of the latch 14. Since the corresponding boundary surface of the receiving opening 16 is formed so that the locking pin 11 pressing on this surface acts on the closing latch 14 in its closed position shown in Figure 2, the latch 14 rotates in the position shown in Figure 2, wherein this rotation by walking the tilt spring 17 is supported by the one end position in the end position shown in Figure 3, in which the tilt spring 17 holds the latch 14 in the closed position detent. In this movement, the blocking lug 20 of the safety lever 19 slides along the outside of the latch 14 and engages under the pressure of the spring 23 in the blocking recess 28 of the latch 14, in which the blocking lug 20 abuts against the blocking recess 28 limiting paragraph 29 and a Reverse rotation of the latch 14 is prevented even with a corresponding train on the closure holder 10. In this position, the lock 12 is securely locked to the shutter holder 10; an opening is not possible.

If now the locking device to be opened, the electromagnet 24 is energized, which thereby pivots the locking lever 19 in the position shown in Figure 4, in which now the blocking lug 20 has slid out of the blocking recess 28 so far that at a Rotation of the latch 14 in the open position (Figure 2) of the paragraph 29 can pass on the blocking lug 20 of the safety lever 19. Thus, only an opening readiness of the closing latch 24 is initially set on the energization of the electromagnet 24, in which it requires a pulling on the closure holder 10 or on the door carrying it to now against the force of the tilt spring 17, the latch in her from Figure 2 apparent To swing open position.

The features disclosed in the foregoing description, the claims, the abstract and the drawings of the subject matter of these documents may be essential individually as well as in any combination with each other for the realization of the invention in its various embodiments.

Claims (5)

Locking device, in particular for switchgear cabinets, comprising a lock (12) attached to the cabinet body and a closing latch (14) and a closure holder (10) attached to the door with a locking pin (11) to be locked with the latch (14), wherein the rotatably mounted latch (14) is biased both into its locking position (11) detecting the locking position and in its open position by means of a tilt spring (17) and wherein a rotatable and biased by a spring (23) in its blocking position for the latch (14) Secured lever (19) is provided for blocking a rotational movement of the closing latch (14), which counter to the force of the spring (23) into its release position for the closing latch (14) from an electromagnet (24) energized for setting an opening readiness of the closing latch (14) ) is pivotable. Locking device according to Claim 1, in which a microswitch (25) assigned to the closing latch (14) is arranged in the lock (12) for the purpose of emitting a signal. Locking device according to claim 2, in which the microswitch (25) can be actuated by the closing latch (14) in its open position. Locking device according to one of Claims 1 to 3, in which the securing lever (19) rests in its blocking position against a shoulder (29) located on the outer circumference of the closing latch (14). Locking device according to one of claims 1 to 4, in which the inner surfaces of the locking pin (11) formed in the locking latch (14) receiving opening (16) for the locking pin (11) are formed such that by on the closure holder (10). with locking pin (11) pressure exerted the pivoting of the latch (16) in its locking position and by the closure holder (10) with locking pin (11) train exerted the pivoting of the latch (14) in its open position is effected.

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