CN103165297B - Motor drive - Google Patents

Abstract

The invention relates to a motor drive (10) etc. for an electrical switch, in particular an electrical circuit breaker. According to the invention it is provided that the motor drive ( 10 ) has a switch element ( 50 ), which switches the motor drive in the switch position pushed into the motor drive housing ( 20 ). A motor of the device (10) operates and is prevented from operating in a locked position at least partially protruding from the motor drive housing (20).

Description

motor drive

technical field

The invention relates to a motor drive for an electrical switch, in particular an electrical circuit breaker.

Background technique

A motor drive of this type is used to switch over the electrical switch contacts of an electrical switch connected to the motor drive within the scope of a remote control. The electrical switching contacts of the electrical switch can thus be adjusted by correspondingly actuating the motor drive.

Contents of the invention

The object of the present invention is to provide a motor drive for an electrical switch which ensures safe maintenance.

This object is achieved according to the invention by a motor drive having the features of claim 1 . Advantageous embodiments of the motor drive according to the invention are described in the dependent claims.

Accordingly, according to the invention it is provided that the motor drive has a switch-on element which, in the switch-on position pushed into the motor drive housing, switches the motor operation of the motor drive on and The motor is prevented from being operated in a locked position at least partially protruding from the motor drive housing.

A major advantage of the motor drive according to the invention is that it can be determined by means of the switching element provided according to the invention whether the motor operation of the motor drive is switched on or blocked. Thus, the motor drive according to the invention makes it possible, for example, to lock the operation of the motor drive for maintenance purposes, thereby ensuring that the electrical switching contacts of the electrical switches connected to the motor drive cannot be adjusted by the motor drive. In order to deactivate the motor drive, it is only necessary to switch the switching element from its switched position into its locked position. As soon as the switching element has reached its locking position, the motor operation is stopped and the electrical switching contacts of the electrical switch can no longer be adjusted.

It is considered to be particularly advantageous if the motor drive has an actuating element with which the switching element can be guided out on the operator side and a transition from the switching position to the locking position can be triggered. By providing a separate operating element, the position of the switching element, that is to say the switching position or the locking position, can be adjusted particularly simply, for example also with one hand.

In order to automatically lead out the connecting element in a simple manner after actuating the operating element, it is considered advantageous if the connecting element is connected to a spring device in the direction of exit from the motor drive housing A spring force is exerted on the switch-on element in its switch-on position. In the latching position, the actuating element preferably indirectly or directly latches the actuating element in the on position and holds the actuating element in the on position; the actuating element is in the triggering position The connecting element is released in the middle, so that the connecting element can be moved in the direction of coming out of the motor drive device by the elastic force of the spring device.

In order to ensure that after deactivation of the motor drive there is no unintentional resumption of operation (Wiederinbetriebnahme) due to the connecting element being pushed back into the motor drive housing unintentionally, it is considered advantageous if the connecting element has An opening which protrudes from the motor drive housing in the locked position of the connecting element and which can receive a locking head or a fixing element which mechanically prevents the connecting The element completely re-enters the motor drive housing.

Since the motor drive is switched on during its normal operation, it is considered to be advantageous that the connection element can not be in the way on the motor drive housing; it is therefore considered to be advantageous that the In the switched-on position, the switch-on element is pushed completely into the motor drive housing. In its switched-on position, the connecting element is preferably inserted into the motor drive housing such that the outer surface of the connecting element closes the outer surface of the motor drive housing lying in the same plane. surface.

Furthermore, it is considered to be advantageous if the operating element and the switching element are arranged on the same housing side of the motor drive housing and are accessible. Arrangement of both the operating element and the switching element on one and the same housing side, preferably on the front side of the motor drive housing enables particularly simple handling, in particular activation and deactivation of the motor drive .

With regard to simple handling and a space-saving housing design, it is considered advantageous if the direction of movement of the connecting element is perpendicular to the direction of movement of the connecting element when it is moved out of the motor drive housing. That housing side or housing surface on which the operating element is arranged.

Furthermore, the invention also relates to an electrical switch having a motor drive as described above.

With regard to the advantages of the electrical switch according to the invention, reference is made to the above-described embodiments in relation to the motor drive according to the invention.

It is considered to be advantageous if a locking device is connected to the connecting element of the motor drive, which prevents the removal of the motor drive from the motor drive when the connecting element assumes its locking position. switch. In this refinement, the connecting element has a double function: on the one hand, the motor can be reliably activated or deactivated by the connecting element being inserted into the motor drive housing or being guided out of the motor drive housing. On the other hand, the switching element can prevent removal of the switch from the motor drive when the switching element assumes its locking position and the motor drive is generally deactivated or locked.

In order to ensure that the deactivation of the motor drive takes place preferably only when the electrical switch is also open, it is considered advantageous if the motor drive has a motor drive switch with which the motor drive is adjusted position of the electric switch contact of the electric switch, which depends on the position of the motor drive; and the operating element is coupled to the motor drive in such a way that only The actuating element can only be actuated to trigger the opening of the switching element if the electrical switching contacts of the electrical switch were previously opened by the motor drive, otherwise the actuating element is blocked.

Furthermore, the invention relates to a method for operating an electrical switch, in particular an electrical circuit breaker.

According to the invention with regard to such a method, it is provided that after opening the electrical switching contacts of the electrical switch, an actuating element is actuated, with which the switching element is led out and the transition from the switching position to locking of the switching element is triggered. Transition of position; wherein the switch-on element is pushed into the motor drive housing in its switch-on position, and switching of the electrical switch contacts of the electrical switch is possible via the motor drive and wherein, in its locking position, the switching element protrudes at least partially from the motor drive housing and prevents reconnection of the disconnected motor drive.

With regard to the advantages of the method according to the invention, reference is made to the above-described embodiments in relation to the motor drive according to the invention, since the advantages of the motor drive according to the invention substantially correspond to the advantages of the method according to the invention.

With regard to the method, it is considered to be advantageous if a locking head or fixing element is mounted in the opening of the connecting element, by means of which locking head or fixing element mechanically prevents the connecting element from completely re-entering the in the motor drive housing. The locking of the switching element ensures that accidental or unintentional reactivation of the motor drive cannot occur, especially in the case of maintenance work.

Description of drawings

The invention is explained in more detail below with the aid of examples, which are shown here by way of example:

FIG. 1 shows a first embodiment of the motor drive according to the invention, wherein the switch-on element of the motor drive is in its switch-on position;

FIG. 2 shows the motor drive according to FIG. 1 with the connecting element in its locked position;

FIG. 3 shows an example of the internal structure of the motor drive according to FIG. 1 with the switching element in its switched position;

FIG. 4 schematically shows the internal structure of the motor drive according to FIG. 1 after the switching element is in its locked position;

FIG. 5 shows a second embodiment of the motor drive according to the invention with the switch-on element in its switch-on position;

FIG. 6 shows the motor drive according to FIG. 5 with the switch-on element in its locked position;

FIG. 7 shows an example of the internal structure of the motor drive of FIG. 5 , wherein the switch-on element is in the switch-on position;

FIG. 8 shows the internal structure of the motor drive according to FIG. 5 with the connecting element in its locked position; and

FIG. 9 shows an embodiment of a motor drive, in which the switch-on element is connected via a locking device to a locking element capable of locking the motor drive to the electrical switch.

In the figures, for the sake of clarity, identical or similar components are always provided with the same reference numerals.

detailed description

FIG. 1 shows a motor drive 10 which can be mounted with a mounting side 11 on an electrical switch not shown in FIG. 1 for reasons of clarity. The motor drive 10 has a motor drive housing 20 , on the front of which a front panel 30 is arranged. A motor drive switch 40 , a switching element 50 and an externally accessible operating element 60 are arranged on the front panel 30 .

The motor drive switch 40 is used to switch the motor drive 10 in order to achieve a desired switching position of an electrical switching contact of an electrical switch (not shown). In the illustration according to FIG. 1 , the motor drive switch 40 is placed in the open position of the electrical switch contacts of the electrical switch.

If maintenance work is to be carried out on electrical switches (not shown) or on the motor drive 10 , it must be ensured that the motor drive 10 cannot be inadvertently put into operation and thus the electrical switches cannot be switched over unintentionally. To achieve this, a switching element 50 and an operating element 60 are provided.

In the representation according to FIG. 1 , the switch-on element 50 is in its switch-on position, in which the motor drive 10 is permitted to be actuated. Thus, in the position shown in FIG. 1 , the electric motor drive switch 40 can be switched, the motor drive 10 can be put into operation, and the electrical switch connected to the motor drive 10 can be switched over.

With regard to the switch-on position of the switch-on element 50, it can be seen in FIG. The panel 30 is closed. In other words, the outer surface 51 of the switching element 50 lies in the same plane as the motor drive switch 40 , the operating element 60 and the front panel 30 .

In order to deactivate the motor drive 10 , the connection element 50 must protrude at least partially from the housing groove 21 of the motor drive housing 20 , so that the connection element protrudes at least partially from the motor drive housing 20 . In order to protrude the connecting element 50 from the motor drive housing 20 , for example, an operating element or an operating device can be provided on the outer surface 51 of the connecting element 50 , with which the connecting element 50 can be manually actuated directly. .

However, it is considered to be particularly advantageous if the connecting element 50 does not have to be actuated directly itself, but only the derivation of the connecting element 50 has to be triggered. In order to trigger a rapid release of the connecting element 50 , the motor drive housing 20 has an actuating element 60 which supports the connecting element 50 in the motor drive housing 20 in a locked manner.

As soon as the actuating element 60 is pushed upwards in the direction of the arrow P1, the connecting element 50 is disengaged (entriegeln) indirectly or directly, so that the spring device, not shown in FIG. 1 and acting on the connecting element 50 The contact element 50 is extruded out of the plane of the front panel 30 in the direction of the arrow P2 , preferably perpendicularly to the front panel 30 . For mechanically guiding the connecting element 50 , guide rails are preferably contained in the motor drive housing 20 , which guide the connecting element during its movement in the direction of the arrow P2 .

The motor drive 10 is deactivated as soon as the switching element 50 protrudes at least partially from the motor drive housing 20 so as to reach its locking position.

FIG. 2 shows the motor drive 10 according to FIG. 1 , according to which the connection element 50 is partially separated from the motor drive housing 20 and protrudes from the motor drive 20 . The opening 52 of the connection element 50 can be seen, which protrudes from the motor drive 20 and through which a locking cylinder 70 (or another fastening element) can pass. The position of the connecting element 50 can be locked by means of the lock. This means that the connecting element 50 can no longer be pushed back into the motor drive housing 20 as soon as the locking cylinder 70 passes through the opening 52 of the connecting element 50 .

All in all, the motor drive 10 can be switched off safely by pushing the operating element 60 upwards in the direction of the arrow P1 and, due to the corresponding fault load, the switching element 50 is automatically pushed out of the housing groove 21 in the direction of the arrow P2. Squeeze it out. This safe disconnected state of the motor drive 10 can then be permanently secured by the locking head 70 .

FIG. 3 shows an exemplary embodiment of the internal structure of the motor drive 10 according to FIGS. 1 and 2 . It can be seen that the switch-on element 50 has been completely inserted into the motor drive housing 20 and is locked in its switch-on position by means of the actuating device 60 . For latching the contact element 50 and the operating element 60 a spring 100 is provided which, in the illustration according to FIG. 3 , presses the operating element downward in the direction of the arrow P3.

If the actuating element 60 is now pressed upwards against the spring force of the spring 100 , thereby disengaging the connecting element 50 , the connecting element is pressed out of the motor drive housing 20 in the direction of the arrow P2 . Figure 4 shows the details of this situation in detail.

A spring device 110 can be seen in FIG. 4 , which interacts with the connecting element 50 and which is pressed out of the motor drive housing 20 after it has been disengaged by the actuating element 60 .

If, for example, the connecting element 50 is pushed back into the motor drive housing 20 in order to reconnect the electric motor drive after repairs have been completed, an automatic detachment of the operating element 60 and the connecting element 50 will occur due to the spring 100 . snap in so that they reach the starting position again as shown in FIGS. 1 and 3 . In addition, the spring device 110 is tensioned when the connecting element 50 is pushed back into the motor drive housing 20 , so that when the operating element 60 is actuated again, sufficient spring energy is available to switch the connecting element 50 is squeezed out of the motor drive housing 20 again.

FIG. 5 shows a second exemplary embodiment of a motor drive 10 which is mounted on a mounting side 11 on a not shown electrical switch. The motor drive 10 has a motor drive housing 20 on the front or front panel 30 of which a motor drive switch 40 , a contact element 50 and an operating element 60 are arranged. The motor drive 10 according to FIG. 5 corresponds in basic structure to the motor drive 10 according to FIG. 1 .

The difference between the motor drive 10 according to FIG. 5 and the motor drive according to FIG. 1 lies in the external operation: in the motor drive 10 according to FIG. Instead, it is pushed horizontally to the right in order to disengage the connecting element 50 and to automatically press the connecting element 50 out of the motor drive housing 20 in the direction of the arrow P2.

FIG. 6 shows the motor drive 10 after the connection element 50 has been partially pressed out of the motor drive housing 20 . An opening 52 can be seen in the connecting element 50 , which allows a separate locking cylinder to be mounted on the connecting element 50 . Such a locking cam ensures that the switching element 50 cannot be completely pushed back into the motor drive housing 20 from its locking position shown in FIG. 6 and thus cannot reach its switching position.

FIG. 7 shows a detail of the motor drive 10 according to FIGS. 5 and 6 , with the connection element in its fully pushed-in position into the motor drive housing 20 . The spring 100 can be seen, which interacts with the operating element 60 and has the effect that the operating element 60 locks the switching element 50 , which is fully inserted into the motor drive housing 20 , in its switching position.

Furthermore, FIG. 7 shows the spring device 110 being tensioned and pressing the connecting element 50 out of the motor drive housing 20 when the connecting element 50 is released by the actuating element 60 .

FIG. 8 shows the motor drive 10 according to FIGS. 5 to 7 after the operating element 60 has been moved in the direction of the arrow P3 and the switching element 50 has been released. As a result of the spring force connecting element 50 of the spring device 110 being pressed out of the motor drive housing 20 , it reaches its locking position in which the motor drive 10 is disconnected.

In addition, an opening 52 can be seen in the connecting element 50 , which can accommodate a fastening element or a locking head, with which the connecting element 50 can be prevented from re-entering the motor drive housing 20 middle.

If, for example, after repairs have been completed, the connection element 50 is pushed back into the motor drive housing 20 in order to reconnect the motor drive 10 , the spring 100 (see FIG. 7 ) will cause the actuating element 60 and the connection element to 50, so that they reach the initial position again, as shown in FIGS. 5 and 7 . In addition, the spring device 110 is tensioned when the connecting element 50 is pushed back into the motor drive housing 20, so that when the operating element 60 is actuated again, sufficient spring energy is available for resetting the connecting element 50. Squeeze out of the motor drive housing 20 .

In the exemplary embodiments according to FIGS. 5 to 8 , guide rails are preferably also included in the motor drive housing 20 for mechanically guiding the connecting element 50 , which guide rails are included when the connecting element 50 is moved into the motor drive housing 20 . Alternatively, the connecting element 50 is guided during movement out of the motor drive housing 20 .

FIG. 9 shows another embodiment of a motor drive 10 . In this exemplary embodiment, the switching element 50 is additionally connected to a locking device 200 which is equipped with a locking element 210 . As soon as the connecting element 50 has reached its locking position and at least partly protrudes from the motor drive housing 20, the locking element 210 occupies a position in which the locking element prevents movement from the Remove the motor drive unit from the electrical switch not shown in 9.

In the refinement according to FIG. 9 , when the operating element 60 is actuated and when the switching element 50 is withdrawn quickly from the motor drive housing 20 , not only is reactivation of the motor drive prevented, but also the motor drive is prevented. Device 10 is disassembled from the electrical switch. That is to say, the safety of the overall arrangement consisting of the electrical switch and the motor drive in the event of maintenance can be further increased by means of the locking device 200 and the locking element 210 .

Although the details of the present invention have been illustrated and described in detail through preferred embodiments, the present invention is not limited to these disclosed embodiments, but those skilled in the art can Further variants are derived therefrom.

List of reference signs:

10 Motor drive

11 Mounting the sides

20 Motor drive housing

21 Housing slot

20 front panel

40 Motor drive switch

50 Switching elements

51 outer surface

52 openings

60 Operating elements

70 lock

100 springs

110 spring device

200 locking device

210 locking element

P1 Arrow direction

P2 Arrow direction

P3 Arrow direction

Claims (13)

1. the motor drive (10) for electric switch, it is characterised in that described motor drive (10) has Connecting element (50), described connection element connects described horse in the on-position in being pushed into motor drive housing (20) Reach the motor operation of driving means (10), and at the lock stretched out at least in part from described motor drive housing (20) Location prevents motor operation in putting, and wherein, described motor drive (10) has operating element (60), utilizes described operation unit Described connection element (50) can be derived by part in operating personnel side, and can implement or trigger from on-position to locking The transition of position, wherein,

-described connection element (50) is connected with spring assembly (110), and described spring assembly is along from described motor drive shell Elastic force is applied on the connection element (50) that is in its on-position by body (20) direction out；

-described operating element (60) at latched position middle ground or directly by described connection element (50) card is locked in and connects In logical position, and described connection element (50) is maintained in on-position；And described operating element is in trigger position Discharge described connection element (50), thus described connection element can be made along from institute by the elastic force of described spring assembly (110) State motor drive (10) direction out to move.

2. according to the motor drive described in claim 1, it is characterised in that described electric switch is electric circuit breaker.

3. according to the motor drive described in claim 1 or 2, it is characterised in that described connection element (50) has opening (52), described opening stretches out in the latched position of described connection element (50) from described motor drive housing (20)； And can install tapered end (70) or retaining element, described tapered end or retaining element mechanically prevent described connection element (50) Fully re-enter in described motor drive housing (20).

4. according to the motor drive described in claim 1 or 2, it is characterised in that described connection element (50) is connecting position Put and be fully pushed in described motor drive housing (20).

5. according to the motor drive described in claim 1 or 2, it is characterised in that described operating element (60) and described connect Logical element (50) is arranged on the same housing side of described motor drive housing (20), and is to touch 's.

6. according to the motor drive described in claim 1 or 2, it is characterised in that described connection element (50) from motor When moving out in driving means housing (20), the direction of motion of described connection element (50) is perpendicular to be disposed with thereon described That housing side of operating element (60).

7. according to the motor drive described in claim 1 or 2, it is characterised in that described connection element (50) connecing at it Logical position is so pushed in described motor drive housing (20), thus the outer surface (51) of described connection element is closed The outer surface being in same plane of described motor drive housing (20).

8. there is the electric switch according to motor drive in any one of the preceding claims wherein.

9. according to the electric switch described in claim 8, it is characterised in that locking device (200) and described motor drive (10) connection element (50) connects, and when described connection element (50) occupies its latched position, described locking device prevents Described electric switch is taken off from described motor drive (10).

10. according to the electric switch described in claim 8 or 9, it is characterised in that

-described motor drive (10) has motor drive switch (40), utilizes described motor drive switch to adjust Joint motor drive (10) position, and then regulate described electric switch electrical switching contact, depend on that described motor drives The electric switch position of the position of dynamic device；And

-described operating element (60) so couples with described motor drive switch (40), thus only electrically opens when described Close electrical switching contact before by described motor drive (10) disconnect time, could operate described operating element (60) with Triggering the derivation of described connection element (50), the most described operating element is the most locked.

11. are used for the method that operation has the electric switch of motor drive (10), it is characterised in that

-disconnect described electric switch electrical switching contact after manipulation operations element (60), utilize described operating element to derive Connect element (50), and trigger the transition from on-position to latched position of described connection element (50)；

-wherein, described connection element (50) is pushed in motor drive housing (20) in its on-position, and The conversion of the electrical switching contact of described electric switch it is capable of by described motor drive (10)；

-wherein, described connection element (50) in its latched position at least in part from described motor drive housing (20) stretch out in, and prevent the motor drive (10) disconnected from reclosing；

-wherein, described connection element (50) is connected with spring assembly (110), and described spring assembly drives dress along from described motor Put on the connection element (50) that elastic force is applied to be in its on-position by housing (20) direction out；And

-wherein, described operating element (60) is at latched position middle ground or directly by described connection element (50) kayser In on-position, and described connection element (50) is maintained in on-position；And described operating element is at trigger bit Put middle release described connection element (50), thus described connection element edge can be made by the elastic force of described spring assembly (110) Move from described motor drive (10) direction out.

12. in accordance with the method for claim 11, it is characterised in that described electric switch is electric circuit breaker.

13. according to the method described in claim 11 or 12, it is characterised in that tapered end (70) or retaining element are arranged on described Connect in the opening (52) of element (50), utilize described tapered end or retaining element mechanically to prevent described connection element (50) complete Entirely re-enter in described motor drive housing (20).