DE102008016842B3 - Auxiliary operating device for operating electromechanical switching device, has connecting mechanism manually operated between release position and connecting position in which handle is rotatably connected with coupling element - Google Patents

Abstract

The device has an electromechanical switching device arranged at an operating shaft (7), and a coupling element (2) rotatably connected with the shaft that is rotatable around a rotation axis (A). A handle (3) is fastened to the coupling element that is pivotable around a pivot axis (B), and is supported in a rotation direction against the coupling element. A connecting mechanism (4) is manually operated between a release position, in which the handle is pivotable relative to the coupling element, and a connecting position in which the handle is rotatably connected with the coupling element.

Description

The The invention relates to an additional operating device for an electromechanical switching device with a Switching drive for switching the switching device on and off.

Such Additional operating devices come in control cabinets used, wherein the switching drive of the switching device when closed cabinet door with one from the outside to be operated Door coupling handle rotatably connected. When opening the cabinet door is the non-rotatable connection between the switching drive and the Door coupling handle interrupted. Thus, during maintenance, the switching device nevertheless is switchable, auxiliary actuators are in known solutions provided, which is an actuation the switching drive of the switching device even with the cabinet door open.

So that the switching device can be switched on with the cabinet door open only by a deliberate action and switching off can be made as quickly as possible, suggests US Pat. No. 7,071,427 B2 an additional operating device, which is connected on the one hand with a mounted in a cabinet electromechanical switching device and on the other hand is in the closed cabinet door with an externally operated door coupling rotary handle in engagement. When the cabinet door is opened, the auxiliary operating device disengages from the door coupling rotary handle. The auxiliary actuating device has a handle housing formed with handle housing, which is rotatably and axially limited slidably mounted about an actuating shaft which is connected on the one hand with a switching drive of the switching device and on the other hand when closing the cabinet door with the door coupling rotary handle can be engaged. Within the handle housing, a polygonal ratchet wheel is rotatably and axially limited slidably mounted on the actuating shaft, which forms a unidirectional rotary coupling with axially aligned on the inner wall of the handle housing first ribs. This unidirectional rotary coupling has the effect that, when a rotary actuation of the rotary handle is performed, the rotational movement is transmitted to the actuating shaft in only one of the two directions of rotation, and no movement transmission takes place in the other direction of rotation. Thus, only made by means of the handle housing switching movement in one direction - preferably in the direction to turn off the switching device - effective.

Within of the handle housing is still a clutch limited axially slidably and rotationally fixed on the actuating shaft stored, the peripherally equipped with axially aligned second ribs is. Between the coupling wheel and the ratchet wheel is supported a coil spring from which the clutch wheel relative to the handle housing from switchgear acted upon away, wherein the coupling wheel at one with handle elements trained and frontally screwed to the handle housing ring-like housing part is applied. In this state, only the transmission of the rotary motion from the handle housing over the unidirectional rotary coupling possible. By engaging the door coupling handle when Shut down the cabinet door or by pulling the handle housing when open Cabinet door will the coupling wheel relative to the handle housing in the axial direction against shifted the spring force of the coil spring, the second Rip the coupling wheel with the first ribs in the handle housing into engagement reach. In this state finds a motion transfer in both directions from the handle housing to the actuating axis instead. This bidirectional motion transmission now allows a switching movement in both directions, d. H. either for switching off as well as for switching on the switching device. adversely in this additional operating device is their production technically complex structure.

The EP 1 583 120 A1 shows an additional operating device, which is connected on the one hand with a mounted in a cabinet electro-mechanical switching device and on the other hand is in the closed cabinet door with an externally operated door coupling rotary knob in engagement. When the cabinet door is opened, the auxiliary operating device disengages from the door coupling rotary handle. The additional actuating device has a rotor, which is held rotatably and axially displaceably relative to a base element. When the control cabinet door is closed, the rotor is non-rotatably connected to the door coupling rotary handle. Further, the rotor is transferred to an inserted position in which the rotor is rotatably connected to an actuating shaft for switching the switching device. When the cabinet door is open, the rotor is in an extended position in which it is not connected to the actuating shaft and in a position corresponding to the exhibition of the switching device rotational position relative to the base member is held. In this position, another actuation shaft can be connected to the rotor in a rotationally fixed manner, a rotation grip being disposed on the further actuation shaft in a rotationally fixed and axially displaceable manner. By means of the rotary handle, the rotor can then be transferred axially into the inserted position in which it is again connected in a rotationally fixed manner to the actuating shaft of the switching device so that the rotor and thus the actuating shaft of the switching device can be rotated via the rotary handle in order to switch the switching device ,

DE 195 45 849 A1 shows an auxiliary handle, the non-rotatably mounted on an extension shaft which connects the actuating shaft of a switching device with a door coupling rotary handle. Thus, the switching device can be switched on and off with the cabinet door open. However, there is a risk that the auxiliary handle is inadvertently actuated in the direction of the setting of the switching device, since there is always a rotationally fixed connection between the auxiliary handle and the switching shaft of the switching device.

The The object of the invention is an additional operating device to provide that no unconscious transmission of a switching movement for switching on the switching device allowed and simple.

The Task is solved by an additional operating device to operate an electromechanical switching device, which on one hand with a switching drive of the switching device connected and on the other hand in engagement with a door coupling handle can be brought actuation shaft can be arranged, comprising a coupling element, the rotationally fixed can be connected to the actuating shaft rotatable about an axis of rotation, a handle which is pivotally mounted about a pivot axis on the coupling element is and in a first direction of rotation against the coupling element supported is, as well as a connection mechanism, between a release position, in which the handle is pivotable relative to the coupling element, and a connection position in which the handle rotatably with the coupling element is connected, manually operated is.

Thereby, that the handle is pivotally mounted on the coupling element remains the handle in the second direction of rotation relative to the coupling element free pivotable. The connection mechanism serves for the non-rotatable connection between handle and coupling element. Here is the connection mechanism manually operable, whereby changed between the release position and the connection position can be. Only when pressed the connection mechanism from the release position to the connection position is a non-rotatable connection between the coupling element and the handle achieved. When unchecked Link mechanism is the non-rotatable connection between handle and coupling element not available. Thus, an unwanted Actuate the coupling element by means of the handle, so a twisting of the Coupling element by means of the handle with unconfirmed connection mechanism, not possible in the second direction of rotation. By supporting the Handle in a first direction of rotation against the coupling element is achieved that even without pressing the connecting mechanism pivoting the handle in the first Direction of rotation has a twisting of the coupling element result. This ensures that switching off the switching device with the auxiliary operating device even without activated connection mechanism possible is.

Of the Connecting mechanism preferably has first connecting means, which are arranged on the handle, and second connecting means, the are arranged on the coupling element, on, wherein the first and second Connecting means in the release position disengaged and in the connection position are in engagement with each other. Basically, among the lanyards to understand any devices that a non-rotatable connection allow between the handle and the coupling element. In particular are positive or non-positive connections advantageous. With the phrase "engaged with each other" is any form to understand interaction between the two connecting means the non-rotatable connection between the handle and coupling element allows for example, a frictional connection.

In Preferred embodiment, the first connecting means in the form a first driver designed between an advanced and one withdrawn Adjustable position is arranged on the handle, wherein the first driver in the advanced position in the second connection means engages in the form of a first recess. This possibility So describes a form-fitting Variant. When the first dog is in the retracted position, it is the connection mechanism in the release position. If the first driver is in the advanced position, is located the connection mechanism in the connection position.

Preferably, the first driver is acted upon to take the retracted position with force. This can be realized for example by the provision of a spring. By applying the first driver to take the retracted position is achieved that the first driver basically dwells in the retracted position, as long as he is not moved to the advanced position. As a result, the connection mechanism is held in the release position at the same time. Only when deliberately displacing the first driver from the retracted position while overcoming the acting force of the first driver is moved to the advanced position, whereby the connection mechanism is transferred from the release position into the connection position. This ensures that the connection mechanism can be deliberately converted into the connecting position only, which also ensures that a rotation of the coupling element by pivoting the handle in the second direction of rotation are made only after conscious operation of the connection mechanism can. An inadvertent switching on of the connected switching device is thus impossible.

The Coupling element comprises in an advantageous embodiment, a sleeve, the non-rotatable with the actuating shaft is connectable. In this case, the sleeve is preferably around the actuating shaft to be arranged. The sleeve in this case preferably has a central recess which is positively connected with an outer peripheral surface of actuating shaft is connectable. Preferably, the inner peripheral surface of the Sleeve not designed rotationally symmetrical, so that the sleeve only in a certain orientation across from the actuating shaft can be mounted on this.

Preferably it is provided that the additional operating device further holding means includes the handle against pivoting about the pivot axis in a second direction of rotation until it exceeds a predetermined Hold holding torque in a basic position. In the basic position the handle is preferably arranged to the coupling element, that pivoting of the handle about the pivot axis in the first Direction of rotation directly turning the coupling element the rotation axis has the consequence. A free pivoting of the handle without simultaneous rotation of the coupling element in the second However, the direction of rotation remains initially only the predetermined holding torque must be overcome. The Holding torque only serves to prevent an unintentional Solve the Handle from the basic position, for example by gravity or vibration is prevented. The holding torque must in any case, well below an actuating torque which is necessary to the switching device by means of the actuating shaft to turn from the off position to the on position. Preferably the holding torque also be adjustable.

Preferably is a support surface of the Handle in the basic position with a stop surface of the coupling element in Investment. In the basic position must However, the handle and the coupling element does not necessarily touch. It is sufficient if the support surface and the stop surface are arranged at a small distance from each other.

In advantageous embodiment is the handle for taking the basic position applied with force, which serves to the unconfirmed handle in principle aspires to the basic position. This is advantageous because in the basic position of the handle arranged in such a way to the coupling element is that pivoting the handle about the pivot axis immediately a rotation of the coupling element about the rotation axis has the consequence. Thus, basically guaranteed that the handle is always in a position that switches off immediately allows. The acting force must be so large that it is sufficient swing back the handle from each pivot position to the normal position. You can do this the holding means be designed in the form of spring means.

It it can be provided that the holding means in the form of locking means are designed, which engage in the basic position of the handle and keep it in the basic position. There are any forms of Known locking means possible. The holding means can in the form of a second driver and a second recess be designed of the coupling element, wherein the second driver engages in the basic position in the second recess and in the direction is applied to the second recess with force. It must be guaranteed in principle be that pivoting the handle from the basic position basically with low torque possible must be, which is below the already mentioned above operating torque lies. The locking or holding means must therefore be designed accordingly be.

In advantageous embodiment is provided that the pivot axis is arranged parallel to the axis of rotation. This has the advantage that the movement to pivot the handle basically the same movement may be, which required for rotating the coupling element is. The pivot axis is preferably at a distance from the axis of rotation arranged.

One preferred embodiment is illustrated by the following drawing figures. Herein shows

1 an additional operating device in the basic position with inserted actuating shaft;

2 the additional operating device according to 1 with respect to the coupling element pivoted handle;

3 the additional actuator after 1 in exploded view;

4 the additional actuator after 1 in basic position in plan view;

5 the additional actuator after 1 in basic position in a sectional view according to the section line II 4 ;

6 the additional actuator after 1 in basic position in a sectional view according to the section line II-II 4 ;

7 a further embodiment of a Additional operating device in exploded view and

8th the additional operating device according to 7 in basic position in a perspective view.

The 1 to 6 will be described together below. The auxiliary actuating device comprises a coupling element 2 , the rotation with an actuating shaft 7 connected is. The coupling element 2 essentially comprises a sleeve 6 and a connection plate 5 , The sleeve 6 is designed substantially cylindrical and has along a rotational axis A a central recess 19 on, which is designed such that the sleeve 6 non-rotatable with the actuating shaft 7 can engage. As in particular from 4 it can be seen, is the central recess 19 basically square cross-section, but at one corner a flattening 23 having. This is the central recess 19 not rotationally symmetrical, so that the sleeve 6 only in a specific orientation on the actuating shaft 7 can be plugged. It goes without saying that the actuating shaft 7 has a corresponding cross-section. By turning the actuating shaft 7 about the axis of rotation A can not shown switching device to which the actuating shaft 7 can be connected, switched on or off. In a first direction of rotation, which corresponds to a counterclockwise rotation of the shaft, the switching device is switched off. In a second direction of rotation, the twisting of the actuating shaft 7 clockwise, the switching device is switched on. However, the invention is not limited to switchable clockwise switching devices. Of course, in a reverse arrangement, a switching device would be actuated, which would be turned counterclockwise. In the following, however, reference will be made, by way of example, to a switching device which is turned on in the clockwise direction.

On an outer peripheral surface of the sleeve 6 is a first recess 12 arranged as part of a later-described link mechanism 4 is. The sleeve 6 also has a stop surface on its outer periphery 9 on, as described later, with a support surface 8th a handle 3 can get into contact. The connection plate 5 is essentially flat, with the through the connection plate 5 spanned plane is aligned substantially perpendicular to the axis of rotation A. The connection plate 5 is with the sleeve 6 firmly connected.

At the connection plate 5 is a cone 10 fastened to the connection with the handle 3 serves. It can be seen that due to the non-rotationally symmetrical design of the recess 19 the handle 3 has a certain orientation to the actuating shaft. This can z. B. be sure that the handle 3 is oriented horizontally in a basic position. The pin 10 is cylindrical and defines a pivot axis B, which is substantially perpendicular to the connection plate 5 and thus also runs parallel to the axis of rotation A. In this case, the pivot axis B is arranged at a distance from the axis of rotation A. The pin 10 is in a hole 14 in the connection plate 5 inserted and by suitable, not shown connecting means with the connection plate 5 firmly connected. At the connection plate 5 is also a second recess 13 arranged as part of holding means to be described later 18 is.

The handle 3 has a receiving bore 14 on top of the spigot 10 of the coupling element 2 can be deferred, leaving the handle 3 with the coupling element 2 is connected. The receiving bore 14 is designed as a blind hole and is located at the bottom of the handle 3 in the extension of the pivot axis B, as it is out 3 can be seen. It can be seen that the handle 3 by means of the pin 10 pivotable about the pivot axis B on the coupling element 2 is arranged. In this case, suitable securing means for axially fixing the handle 3 on the cone 10 provided, which are not shown.

By pivoting the handle 3 about the pivot axis B counterclockwise, the handle 3 be brought into a basic position, as can be seen from the 1 . 4 . 5 and 6 can be seen. This is the support surface 8th at the stop surface 9 of the coupling element 2 at. Because of the support surface 8th and the stop surface 9 are in contact with each other, causes a pivoting of the handle 3 from the basic position counterclockwise twisting the sleeve 6 counterclockwise. As a result, the electromagnetic switching device can be turned off.

To the handle 3 to hold in the basic position, are holding means 18 provided, in particular from 5 is apparent. The holding means 18 include a second driver 15 that in a second hole 22 the handle is arranged. In an advanced position, the second driver engages 15 in the second recess 13 of the coupling element 2 and thus causes a fixing of the handle 3 in the basic position. The second driver 15 is axially displaceable in the second bore 22 held and by means of second spring means 17 for taking the advanced position toward the second recess 13 applied. The second driver 15 , the second recess 13 and the second spring means 17 are designed such that a pivoting of the handle 3 about the pivot axis B above a certain holding torque pushing out of the second Mitneh mers 15 effected in a retracted position, in which the second driver 15 no longer in the second recess 13 engages, allowing a free pivoting of the handle 3 around the pivot axis B is made possible. For the second driver 15 at the bottom a rounding off 20 on, so that with a shearing movement of the second driver 15 opposite the connection plate 5 a force component on the driver 15 affects the driver 15 from the second recess 13 also acted upon. To adjust the holding torque is a threaded bolt 25 provided in a threaded section 24 the second hole 22 can be screwed. On the threaded bolt 25 The second spring means may be supported in the form of a helical spring. Depending on how far the threaded bolt 25 in the second hole 22 is screwed in, the bias of the coil spring varies 17 and thus the power with the second driver 15 in the second recess 13 is held.

It can be seen that in principle a free pivoting of the handle 3 from the basic position relative to the sleeve 6 counterclockwise is not possible because the support surface 8th with the stop surface 9 is in attack. A free pivoting of the handle 3 opposite the sleeve 6 However, about the pivot axis B from the basic position in a clockwise direction is possible as soon as the holding torque is overcome. In 2 the holding torque was overcome and the grip 3 from the basic position in a clockwise direction about the pivot axis B with respect to the coupling element 2 pivoted, without causing a twisting of the sleeve 6 and the actuating shaft 7 is done. However, it should be ensured that a conscious switch-on, which equates to a rotation of the coupling element 2 is clockwise, through the handle 3 can be effected. For this, the handle 3 rotationally fixed with the coupling element 2 be connected, which is described below.

It is especially made 6 it can be seen that a connection mechanism 4 is provided, the substantially first and second connecting means in the form of a first driver 11 and the first recess 12 includes. The first driver 11 is in a first hole 21 of the handle 3 arranged substantially parallel to that of the terminal plate 5 spanned plane is arranged, and whose extension intersects the axis of rotation A in the basic position. In the basic position is the first recess 12 also in the extension of the first hole 21 arranged. This can be the first driver 11 , which is displaceable in the first hole 21 is held in an advanced position in the first recess 12 engage, creating a non-rotatable connection between the handle 3 and coupling element 2 will be produced. The first driver 11 is by first spring means 16 from the first recess 12 charged out. This will be the first driver 11 basically held in a retracted position in which the first driver 11 not in the first recess 12 engages, whereby the connection mechanism is in the release position. Only by pressing the first driver 11 For example, by means of the thumb of a user, the first driver 11 against the spring force of the first spring means 16 in the first recess 12 pressed, whereby the connection mechanism is transferred to the connection position.

In principle, other connection mechanisms can be used. In particular, the first driver 11 be adjustable along an axis that does not intersect the axis of rotation A but crosses at a distance. Furthermore, the first driver 11 be arranged to be displaceable parallel or approximately parallel to the axis of rotation A. This can be the first hole 21 and the first recess 12 be aligned parallel or approximately parallel to the axis of rotation A, wherein the first recess 12 in the connection plate 5 can be provided.

The 7 and 8th show an auxiliary operating device according to the 1 to 6 However, with alternatively designed holding means in the form of a spring element 26 , Corresponding components are therefore provided with the same reference numerals.

The spring means 26 are designed as a leg spring and on the one hand against the sleeve 6 and on the other hand against the handle 3 supported. The leg spring acts on the handle 3 in the swivel direction to take the basic position. When the connection mechanism 4 in their release position, the handle can 3 against the spring force of the spring means 26 be pivoted, but is pivoted back to their original position after releasing them.

2

coupling member

3

Handle

4

joint mechanism

5

connecting plate

6

shell

7

actuating shaft

8th

support surface

9

stop surface

10

spigot

11

first takeaway

12

first recess

13

second recess

14

location hole

15

second takeaway

16

first spring means

17

second spring means

18

holding means

19

central recess

20

rounding off

21

first drilling

22

second drilling

23

flattening

24

threaded portion

25

threaded bolt

26

spring means

A

axis of rotation

B

swivel axis

Claims (11)

Additional actuating device for actuating an electromechanical switching device which is connected to an actuating shaft which is connected on the one hand to a switching drive of the switching device and on the other hand can be brought into engagement with a door coupling handle (US Pat. 7 ) can be arranged, comprising a coupling element ( 2 ), the non-rotatably with the about an axis of rotation (A) rotatable actuating shaft ( 7 ) is connectable, a handle ( 3 ) which pivotable about a pivot axis (B) on the coupling element ( 2 ) is attached and in a first direction of rotation against the coupling element ( 2 ) and a connection mechanism ( 4 ) between a release position in which the handle ( 3 ) relative to the coupling element ( 2 ) is pivotable, and a connecting position in which the handle ( 3 ) rotatably with the coupling element ( 2 ), is manually operable. An auxiliary operating device according to claim 1, characterized in that the connecting mechanism ( 4 ) first connection means ( 11 ) on the handle ( 3 ) are arranged, and second connecting means ( 12 ), which on the coupling element ( 2 ) are arranged, wherein the first and the second connecting means ( 11 . 12 ) are in the release position disengaged and in the connecting position in engagement with each other. Additional actuating device according to claim 2, characterized in that the first connecting means in the form of a first driver ( 11 ) which are adjustable between an advanced and a retracted position on the handle ( 3 ), wherein the first driver ( 11 ) in the advanced position in the second connecting means in the form of a first recess ( 12 ) of the coupling element ( 2 ) intervenes. Additional operating device according to claim 3, characterized in that the first driver ( 11 ) is applied to take the retracted position with force. Additional actuating device according to one of claims 1 to 4, characterized in that the coupling element is a sleeve ( 6 ), which rotatably with the actuating shaft ( 7 ) is connectable. An auxiliary operating device according to any one of claims 1 to 5, characterized in that the auxiliary operating device further comprises holding means ( 18 ) comprising the handle ( 3 ) against pivoting in a second direction of rotation to exceed a predetermined holding torque in a basic position hold. Additional actuating device according to claim 6, characterized in that a support surface ( 8th ) of the handle ( 3 ) in the basic position with a stop surface ( 9 ) of the coupling element ( 2 ) is in plant. Additional operating device according to one of claims 6 or 7, characterized in that the holding means in the form of spring means ( 26 ) are designed, which the handle ( 3 ) to take the basic position with force. Additional operating device according to one of claims 6 or 7, characterized in that the holding means ( 18 ) are designed in the form of locking means which in the basic position of the handle ( 3 ) and hold it in the basic position. Additional actuating device according to claim 9, characterized in that the holding means in the form of a second driver ( 15 ) and a second recess ( 13 ) of the coupling element ( 2 ), wherein the second driver ( 15 ) in the basic position in the second recess ( 13 ) and in the direction of the second recess ( 13 ) is applied with force. Additional actuator according to one of the claims 1 to 10, characterized in that the pivot axis (B) in parallel is arranged to the rotation axis (A).