"Contact arrangement for a relay"
AssigneeSiemens Aktiengesellschaft
InventorErwin Mueller
Life of this patent
Estimating the term…
Abstract
A contact arrangement has a contact spring which is prestressed against a seating edge of an actuation element by a prestress bend. The pre-stress bend lies at an angle of between 0 through 30 degrees relative to the seating edge so that roll-off is produced at the contact location. Such contact arrangement is especially advantageous for switching high-current loads since roll-off at the contact location reduces the welding tendency and makes an easier break-open of the contact when the contact is opening if there is a slight welding of the contacts.
Claims15
A contact arrangement for a relay having an actuation winding, comprising:
- a contact spring having a spring leg with a secured portion and a free end;
- a first contact piece on said free end of said spring leg;
- an actuating element having a seating edge attacking said contact spring between said secured portion and said free end;
- a cooperating contact piece against which said first contact piece rests when in a closed position and from which said first contact piece is lifted when being moved to an open position;
- said first contact piece being moved between said closed position and said open position by actuation of said actuating element;
- and
- at least one angled pre-stress bend in said contact spring proceeding at an acute angle relative to said seating edge of said actuating element.
A contact arrangement, comprising:
- a first contact spring;
- a first contact piece at a free end of said first contact spring;
- a second contact;
- a second contact piece resting against said first contact piece when in a closed condition and from which said first contact piece is lifted when being moved to an open position;
- means for moving said first and second contact pieces relative to one another between said closed position and said open position;
- and
- a pre-stress bend in said first contact spring at an oblique angle relative to a longitudinal direction thereof.
Dependencies are inferred from the claim text.