CN1079575C - Electric switch device - Google Patents

Abstract

A relay comprising at least one control element and/or manipulation element (6, 7, 8), the displacement of which can affect at least one electric quantity and or at least one trigger module, these control elements and/or manipulation elements (6 , 7, 8) After the required adjustment process determined by the working operation, impermissible movement and/or accidental movement is prevented by a sliding window (12), in order not to design the sliding window (12) as Accessory element or flap, according to the invention, the sliding window (12) is designed as an element movable between two end points (13, 19), which releases the control element and/or actuates on one of its end points (19) The element moves, said element being prevented from moving at its other end point (13).

Description

relay

The invention relates to a relay with at least one control element and/or operating element, through which the displacement of the control element can affect at least one electrical quantity and/or at least one trigger module, wherein the control element and/or operating element is subjected to After the desired adjustment process determined by the working operation, other impermissible and/or accidental movements are blocked by a sliding window.

In commercially available devices, such as thermal overload relays, covers for control elements and/or actuating elements are known, which are available as accessories or are designed as flaps fastened to the housing.

Such a cover has the disadvantage that when used as an accessory it may be lost during maintenance operations, or if opened as a flip cover it may block other adjacent electrical operating elements.

The object of the present invention is to provide a device without special accessories or a device that does not block other electrical operating elements, and whose overload relay has the same structural volume, which can prevent the control element and/or operating element from moving and unacceptable. / or accidental movement.

The object of the present invention is achieved by adopting a relay with at least one control element and/or operating element, through which the displacement of the control element can affect at least one electrical quantity and/or at least one trigger module, wherein the control element and and/or the operating element is prevented from other impermissible and/or unintentional movements by a sliding window, which is designed so that it can be moved between two end points A moving element which, at one of its endpoints, releases the movement of the control element and/or the operating element and at its other end prevents the movement of the control element and/or the operating element.

A control element and/or an operating element that is movable at one end and is capped or locked at the other end that is stoppable and sealable.

The present invention will be further described below with the help of a thermal overload relay embodiment shown in the accompanying drawings, in the accompanying drawings:

Figure 1 is a front view of the relay;

Figure 2 is a cross-sectional view of the relay;

Fig. 3 is the perspective view when the relay opens the sliding window;

Fig. 4 is the perspective view that the sliding window of the relay is sealed with lead;

Figure 5 is a schematic diagram of the lock.

As shown in FIGS. 1-4 , the thermal overload relay divides into a heating chamber 1 in which there is a bimetal triggering element 2 for each phase and a part containing the triggering mechanism 3 .

A detection element 4 in the heating chamber 1 receives the signal of the displacement of the bimetallic trigger element 2 and causes the trigger mechanism 3 to act, and this mechanism activates the auxiliary switch 5 when necessary, that is to say according to the adjustment state of the control and/or control element. Execute the switching action and turn on the control current loop.

Figure 1 shows the control and/or operating elements located in front of the relay;

"Manual disconnection" actuating element 6 , actuating element 7 of the triggering module, actuating element 8 of the triggering current, test and switch position display 9 .

In addition, the auxiliary switch terminal 10 and the connection terminal 11 can also be seen from the figure.

In order specifically to prevent impermissible and/or unintentional movement of the triggering module 7 and the actuating elements of the triggering current 8 , a sliding window 12 is closed at the position 13 shown. In this way, the adjusting knob for the triggering current 8 and the test and switch position display 9 are covered. As shown in FIG. 5 , the adjusting knob of the triggering module 7 is locked on the knob shaft 20 via the sliding window 12 and the abutting surfaces of a flat cam cover 14 (Nockenaufsatz). Locking in this way is also possible with slots in the shaft. Releasing the lock requires relatively little torque.

As shown in Figure 4, in the closed position 13 of sliding window 12, owing to be provided with a fixing ring 15 in front of housing, on sliding window 12, there is a ring 16 that follows with it, the holes of two rings are in the sliding window The covers are aligned with each other so that a lead seal 17 or blocking element can be inserted.

As shown in Figure 3, the "manual disconnection" button 6 is not covered or locked in the position 19 where the sliding window 12 is opened, so the main current circuit can be cut off at any time, which is very important for emergency disconnection.

Claims (3)

1. A relay with at least one control element and/or manipulation element (6,7,8), by which displacement of the control element can affect at least one electrical quantity and/or at least one trigger module, wherein the control element and/or After the operating element has undergone the necessary adjustment process determined by the operation, it is blocked from other impermissible movements and/or accidental movements by a sliding window (12), which is characterized in that the sliding window (12) is designed as A member movable between two end points, which at one of its end points (19) releases movement of the control element and/or operating element and at its other end point (13) prevents movement of the control element and/or operating element. 2. The relay according to claim 1, characterized in that the sliding window (12) is lockable and/or lead-sealed (17) at its other end point (13). 3. The relay according to claim 1 or 2, characterized in that the continuously movable control element and/or operating element (8) can be covered in the blocking position (13), while the stepwise movable control element And/or the operating element (7) can be locked.

Images