Load disconnecting switch, in particular for the load circuit of

Details Load disconnecting switch, in particular for the load circuit of Load disconnecting switch, in particular for the load circuit of

1999-07-21

2000-04-11

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335185, 335189, H01F 708

Patent

active

060492651

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention is directed to a battery section switch, particularly for the load circuit of a motor vehicle battery, whereby the load circuit can be automatically opened via an electromagnet system.
2. Description of the Related Art
It is desirable in motor vehicles during certain malfunctions to suddenly disconnect the on-board network from the electrical current as close as possible to the battery. Such instances are, for example, a short in the load circuit that can lead to the discharge of the battery or to a motor vehicle fire, a pole reversal when jumping that can lead to damage to the battery but also to a destruction of the electronic systems in the on-board network or a collision accident as well wherein shorts with a fire risk resulting therefrom can likewise arise.
German Patent Document DE 41 10 240 C1 already discloses a means for fusing a main current path in a motor vehicle. A short-circuit situation is thereby detected by various sensors and comparison means and is interpreted for separating the circuit. A percussion cap or an electromagnetic actuator are cited therein as a disconnect means by way of example, without the design and the function of such an actuator being discussed in greater detail.
European Patent Document EP 0 725 412 A2 also discloses a fuse device for a current conductor in motor vehicles, whereby a sensor for the intensity of the current controls a following separating means with which the current conductor is interrupted given excess current. In detail, separating means having a percussion cap are cited therein, whereby a cable is cut or a plug is pressed out of the housing when the separating means triggering. After the trigger of such separating means, a re-engagement is not possible without further ado even after elimination of the malfunction; on the contrary, the fuse element must be replaced.
European Patent Document EP 0 331 348 A2 discloses a section switch with a manual actuation element, whereby, for example, the response of an electromagnet system unlocks a lock mechanism, so that a contact pair opens. This lock mechanism, however, is relatively complicated in structure.


SUMMARY OF THE INVENTION

A goal of the present invention is to create a battery section switch, particularly for separating the motor vehicle battery in critical situations, that has a compact structure so that it can be accommodated in a tight space directly in the area of the battery post. Moreover, this battery section switch should enable a manual re-engagement of the on-board network as soon as the malfunction has been eliminated. It should thereby also be possible to design the battery section switch such that the load circuit can also be manually disconnected, for example when the motor vehicle stands still for a longer time.
This goal is inventively achieved with a battery section switch having the following features: input conductor and the output conductor; between a closed position and an opening position and is pre-stressed into the opening position by a break away spring; and with which the switch pawl can be locked to the contact carrier in articulated fashion, whereby the contact carrier comprises a guide slot proceeding approximately in its rotational sense wherein a setting peg of the setting arm engages and that, together with the switch pawl coupled to the armature, is seated pivotable around a pawl axis parallel to the rotational axis thereof such that, when the magnet system is not excited, it locks the setting peg with a locking hook to prevent a displacement in the guide slot; toward the contact carrier and for the locking thereof in an engaged position; element interact such that arm against the contact carrier and the setting arm, in its engaged position, pre-stresses the contact carrier into the closed position; arm and the contact carrier is brought into the opening position by the break away spring.
In an advantageous embodiment, the input conductor and the output conductor respectively comprise fix

REFERENCES:
patent: 5568113 (1996-10-01), Chen
patent: 5612659 (1997-03-01), Kerber

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