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US 7,696,846 B2Granted
Electromagnetic switching device
AssigneeSiemens Aktiengesellschaft
InventorsReinhard Maier, Erich Zerbian
Life of this patent
Estimating the term…
Abstract
A drive solenoid, a yoke, an armature and at least one contact are mounted in a housing of an electromagnetic switching device. The drive solenoid, yoke and armature are inductively intercoupled, in such a way that when an inrush current is applied to the drive solenoid, the armature can be displaced into a pickup position, thus directly or indirectly actuating the contact. The yoke and/or armature contain(s) pulverulent magnetic material.
Claims16
An electromagnetic switching device, comprising:
- a housing
- a drive solenoid;
- a yoke;
- an armature;
- and
- at least one contact, the drive solenoid, the yoke, the armature and the at least one contact being mounted in the housing, the drive solenoid, the yoke and the armature being inductively intercoupled, so that, when an inrush current is applied to the drive solenoid, the armature is displaceable into a pickup position, the displacement of the armature into the pickup position allowing the contact to be directly or indirectly actuated,
- the yoke containing pulverulent magnetic material, wherein
- the drive solenoid and the yoke are cast with each other by way of a permanently elastic casting compound to form a block,
- the housing comprises an upper housing part and a lower housing part, detachably connected to each other, wherein the lower housing part includes, at least partly, a casting material and wherein the drive solenoid and the yoke are connected to the casting material by way of the permanently elastic casting material and
- fastening elements for connecting the upper housing part to the lower housing part to each other are arranged in the casting material.
7 more elements
An electromagnetic switching device, comprising:
- a housing
- a drive solenoid;
- a yoke:
- an armature;
- and
- at least one contact, the drive solenoid, the yoke, the armature and the at least one contact being mounted in the housing, the drive solenoid, the yoke and the armature being inductively intercoupled, so that, when an inrush current is applied to the drive solenoid, the armature is displaceable into a pickup position, the displacement of the armature into the pickup position allowing the contact to be directly or indirectly actuated, the yoke containing pulverulent magnetic material, wherein
- the drive solenoid and the yoke are cast with each other by way of a permanently elastic casting compound to form a block, and wherein the pulverulent magnetic material surrounds at least one of a soft iron core, a highly permeable material and a permanent magnet.
4 more elements
An electromagnetic switching device, comprising:
- a housing
- a drive solenoid;
- a yoke;
- an armature;
- and
- at least one contact, the drive solenoid, the yoke, the armature and the at least one contact being mounted in the housing, the drive solenoid, the yoke and the armature being inductively intercoupled, so that, when an inrush current is applied to the drive solenoid, the armature is displaceable into a pickup position, the displacement of the armature into the pickup position allowing the contact to be directly or indirectly actuated, the yoke containing pulverulent magnetic material, wherein
- the drive solenoid and the yoke are cast with each other by way of a permanently elastic casting compound to form a block, and wherein a sensor, inductively coupled to a conductor connected to the contact by way of a coupling element containing a pulverulent magnetic material, is arranged in the housing.
4 more elements
An electromagnetic switching device, comprising:
- a housing
- a drive solenoid;
- a yoke;
- an armature;
- and
- at least one contact, the drive solenoid, the yoke, the armature and the at least one contact being mounted in the housing, the drive solenoid, the yoke and the armature being inductively intercoupled, so that, when an inrush current is applied to the drive solenoid, the armature is displaceable into a pickup position, the displacement of the armature into the pickup position allowing the contact to be directly or indirectly actuated, the yoke containing pulverulent magnetic material, wherein
- the drive solenoid and the yoke are cast with each other by way of a permanently elastic casting compound to form a block, and wherein the switching device is at least one of a contactor and a power circuit breaker.
4 more elements
Dependencies are inferred from the claim text.