DE1936584U - LOCK FOR DOORS IN SWITCHGEAR. - Google Patents

Description

9υ * 1 L ιζ.bo

3IEMENS-SCHUCKERTWERKe Aktiengesellschaft

Erlangen, the ίϋ. ϋβΖ. »5

Werner-von-Siemens-Str. 50 PLA 65/1847 GM

"Lock for doors in switchgears"

Many doors in switchgear must be dimensioned in such a way that excess pressures in the switchgear cell do not tear the doors open or deform it in such a way that hot switching gases flow out into the operating aisle. For other doors (e.g. for measuring cabinets) a special protection against excess pressure is not required.

Pur doors in switching cells, in which overpressures can occur, a so-called rod lock is used in many cases

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PLA 65/1847 GM

which an actuating cylinder rotates a gear, which via toothed racks vertically sliding rods that drive the "door" with parts of the switchgear cubicle at the top and bottom edges lock securely. These known rod locks have the advantage that there are several fastening points between the door and the switchgear cubicle provided. However, there is no possibility of a pressure-resistant stop in the middle of the door at the location of the Lock cylinder and the toothed racks, as e.g. levers attached to the actuating cylinder, which are behind projections of the Grip the switch cabinet wall, do not guarantee sufficient security against opening the door at this point.

This disadvantage is caused by the new lock for doors in switchgear safely avoided. It creates a tear-proof stop directly at the location of the actuating cylinder and also has the advantage that the same structural parts both for locks with operating rods for doors that have to be locked in several places, as well as for Doors are suitable that are only fixed to the wall of the switchgear cubicle at one point are to be connected. The new lock for doors in switchgear systems contains a rotatable actuating cylinder which, if necessary, drive elements for actuating bolts are available. What is new here is that the actuating cylinder is extended towards the interior of the switchgear cubicle, that the elongated piece contains a transverse bore with an inserted bolt protruding beyond the cylinder surface on both sides and that in a part of the switch cabinet wall that runs parallel to the door opening there is an opening which

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PLA 65/1847 GM 4L,

insert the extended cylinder part with the bolt only in the switch-off position of the actuating cylinder allowed.

An embodiment is shown in Figure 1 in a vertical and in Figure 2 in a horizontal sectional view, while Figure 3 shows a rear view of the lock. The actuating cylinder 1 of the lock is on the one hand rotatable on the door 2 and on the other hand stored in a cover 3 which closes a lock case 4. In the lock case 4, the parts of the Rod lock included. It is attached to the door wall 2 together with the cover 3 by means of screws 5 and 6. To reinforce the Door wall at the location of the lock is also provided with a stiffening plate 7 in which the screws 5 and 6 are held. the Lock cylinder has 3 different diameters between the door wall 2 and the cover. Part 8 serves as a stop, see above that the cylinder cannot move outwards. In addition, the actuating cylinder contains a gear 9 for actuating the Closing rods 10 and 11 via the racks 12 and 13 and one Disk spring 14 which tries to push the actuating cylinder outwards so that the door cannot rattle and is in the closed position is kept resiliently closed. Following the plate spring 14, the actuating cylinder is extended so that it protrudes from the cover 3. The extended part 15 contains a yuerbohrung, inserted into die.eine clamping sleeve 16 or a bolt is. The Schaltζeilewand 17 is bent so that a part 18 of the switch cell wall runs parallel to the door opening. This part is also provided with a reinforcement plate 19 and has an opening that allows the insertion of the extended part 15

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PLA 65/1847 GM

of the actuating cylinder with the clamping sleeve 16 is only allowed in the open position of the actuating cylinder. A stop pin diönt to limit the angle of rotation for the actuating cylinder.

The actuating cylinder is in the closed position in FIGS. 1 to 3 drawn. In this position, the extended part 15 of the actuating cylinder cannot come out of the opening in the Peeling cell wall 17 are pulled out so that the door cannot be blown open even at relatively high excess pressures.

Without the gear 9, the racks 12 and 13 and the locking bars 10 and 11 can also use the same lock for locking Used by doors that only require one stopping point. This has in addition to the savings in additional individual parts the advantage that the locks in the doors of all cells of a switchgear look exactly the same from the outside.

3 figures

3 claims for protection

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Claims (1)

PLA 65/1847 GM tggou Protection claims Ί. Lock, for doors in switchgear with a rotatably mounted actuating cylinder, which optionally contains drive elements (gear, lever) for actuating bolts, characterized in that the actuating cylinder is extended in the direction of the interior of the switchgear cubicle, that the extended piece has a transverse bore with an inserted containing about the cylinder surface on both sides protruding pins and that in a direction parallel to the door opening part of the switch cell wall there is an opening which _(| as plugging allows the elongated cylindrical member with the bolt only in the off position of the actuating cylinder. 2. Lock according to claim 1, characterized in that in addition to the opening in the switching cell wall, a stop pin for the bolt is attached in the actuating cylinder. 5. Lock according to claim 1 or 2, characterized in that the actuating cylinder is mounted at two points in the door, has a reduced diameter in a partial area between the bearing positions and in this area γόη a spring is surrounded, the force of which the cylinder seeks to move outwards. - 5 - C / Sw