DE1141700B - Encapsulated low-voltage switch with a locking device - Google Patents

Description

The invention relates to an encapsulated and provided with a locking device Low voltage switch, in which a protective cover with the switch housing in such an articulated Connection is that when you open the lid, the latter is held in the open position and the switch is de-energized.

The known switches of this type are not only relatively complicated and expensive, but moreover has the disadvantage that they cause the current flow or its interruption Isolation switch points tend to scorch. According to the invention, this disadvantage is countered by that the hinge part of the protective cover in recesses spring-loaded insulated mounted in forks Has contact rollers as a disconnection switch point, with the pairs of lamellae fixedly arranged in the switch interior cooperate.

Another feature of the invention is the fact that the contact rollers in the open position of the Protective cover come to rest against a stop arranged on the base piece and during the Roll the opening and closing movement on the slats, whereby the slats arranged on the base piece have a curved shape favoring the rolling process.

In the drawing, the invention is based on an electrical equipped with contacts and fuses Switch illustrated as an exemplary embodiment. It shows Fig. 1 the switch in longitudinal section,

Fig. 2 is a plan view of the switch, partially in section, and

FIG. 3 shows a section along III-III from FIG. 1.

The switch is equipped with a base 10 on which the individual switch parts, such as contacts and the like., Are attached. The bottom piece 10 is provided with recesses that accommodate the with Terminals 12 connected to the feed lines are used.

On the clamps 12 resilient lamellae 14 are arranged, which are appropriately profiled at one end Have curves, which serve as engagement and contact surfaces for insulated rollers 16, which cooperate with forks 18 influenced by spring means 20.

The rollers 16 form the movable contacts of the switch and are together with the associated Forks 18 held by a hinge part 22 of a protective cover 40 with springs 20.

The hinge part 22 is provided on both sides with pins 24 which are in recesses in the switch housing With a locking device

fitted encapsulated

Low voltage switch

Applicant:

Societä per Azioni Bassani,
Milan (Italy)

Representative: Dr.-Ing. H. Negendank, patent attorney,
Hamburg 36, Neuer Wall 41

Claimed priority:
Italy of June 7, 1958 (No. 10 953)

Dr.-Ing. Luigi Bassani, Varese (Italy),
has been named as the inventor

36 engage and pivot the protective cover 40 enable.

With each elastic lamella 14, a counter-lamella 26 cooperates, which of the corresponding Shaping has such an inclined or inclined plane 28 that the associated contact roller 16 can roll so far on the lamella 14 until it is at a provided on the base piece 10 Stop 11 comes to rest.

The counter lamellae 26 are in a known manner with fuses F and with current terminals in connection, the fixed part formed from elastic lamellae 30 is provided on the bottom piece 10, while the movable part formed from plugs 32 is arranged on an insulating block 34, which the said connector 32 holds.

The protective cover 40 is provided with a handle 42 and engages with its edge in a groove 44, which is arranged on the switch base 10 and has a sealing ring 45.

It can be seen that said protective cover 40 serves to cover the parts of the electrical switch which are under voltage in such a way that they are only accessible when the same is opened. These parts include the fuses F and the power consumption or contacts 30-32, as well as possibly other switch parts, ζ. B. clamps, coils, lamps and the like. To understand.

209 749/256

When the protective cover 40 engages in the base piece 10, the switch is closed, ie the contact rollers 16 establish the electrical connection between the lamellae 14 and 26. Do you want to z. B. the plug 32 or the fuse F or any other part of the switch, the protective cover 40 must first be opened by pivoting around the hinge 22 or 24 in the position 40 ', the flow of current in the switch is inevitably prevented by the rollers 16 passing into position 16 '. Only in this way is it possible to safely remove the aforementioned parts, since they are now reliably separated from the current flowing into terminal 12.

The device according to the invention can be modified and modified. So she can z. Legs any kinematic connection between the protective cover and the movable switch contacts provide, the switch being de-energized and held in its open position when the protective cover is opened will.

Claims (3)

PATENT CLAIMS: 1. With a locking device provided encapsulated low-voltage switch, in which a protective cover with the switch housing is in such an articulated connection that when the cover is opened, the latter is held in the open position and the switch is de-energized, characterized in that the hinge part (22, 24) of the Protective cover (40) in recesses spring-loaded in forks (18) insulated contact rollers (16) as a disconnection switching point, which interact with pairs of lamellae (14, 26) fixedly arranged in the interior of the switch. 2. Low voltage switch according to claim 1, characterized in that the contact rollers (16) in the open position of the protective cover (40) on a stop arranged on the base piece (10) (11) come into contact and on the slats during the opening and closing movement (14, 26) unroll. 3. Low voltage switch according to claims 1 and 2, characterized in that the lamellae (14, 26) arranged on the base piece (10) promote the rolling process have a curved shape (28). Considered publications:
German patent specifications No. 939 430, 889 783,
375; Swiss Patent No. 322 451;
French Patent No. 636,533;
U.S. Patent No. 1,910036. 1 sheet of drawings © 209 749/255 12.