|
(11) | EP 1 550 759 A3 |
(12) | EUROPEAN PATENT APPLICATION |
|
|
|
|
|||||||||||||||||||||||
(54) | Security means in a household appliance |
(57) Security means in a household appliance comprises an electric switching unit (1)
provided with a PTC resistor (11) and a bistable switching spring (12), at a free
end of which spring a movable contact (13) is fixed, a blocking slider (2) for blocking
a handle (6) of an appliance door and a latch (3), which in a state of the blocked
handle (6) projects into a first opening (21) of the blocking slider (2). A protective
lifter (4) is placed between the free end of the bistable switching spring (12) and
the blocking slider (2) and transversely thereto. In a state of the unblocked handle
(6) a tip (41) of the protective lifter (4) abuts on a lifting elevation (22) of the
blocking slider (2) and keeps the free end of the even possibly hot bistable switching
spring (12) apart so that the movable contact (13) is separated from a fixed contact
(14). In the state of the blocked handle (6) the tip (41) of the protective lifter
(4) abuts on an unelevated spot of the blocking slider (2) so that the movable contact
(13) fixed at the free end of the bistable switching spring (12) is closed with the
fixed contact (14). The security means in a household appliance according to the invention contributes to a higher security for the user in a simple way. |