Door latch for a domestic electrical appliance

A door latch for a domestic electrical appliance comprising:

• a latch housing;
• a gripping unit which is arranged in the latch housing to be rotatable between a gripping position and an opening position and which in the gripping position grips a closing stirrup in order to hold a door of the domestic appliance closed and in the opening position releases the closing stirrup in order to open the door;
• a blocking element which is arranged to be movable between a blocking position and a release position and which assumes its blocking position when the gripping unit is in the gripping position and assumes its release position when the gripping unit is in the opening position, wherein the blocking element in the blocking position counteracts a rotation of the gripping unit in the direction towards the opening position;
• a locking element which is arranged to be movable between an unlocking position and a locking position and which in the unlocking position permits a movement of the blocking element between the blocking position and the release position and in the locking position blocks the blocking element against movement from the blocking position into the release position;
• and
• an actuating unit for displacing the locking element between the unlocking position and the locking position, wherein the actuating unit comprises an electric drive motor which is in drive connection with the locking element,
• wherein the drive motor and the locking element are received in a locking module which can be pre-assembled as a modular unit and which is installed in the latch housing, the locking module comprising a module housing,
• wherein the locking element is received in the module housing,
• wherein the locking element in the locking position protrudes outwards from the module housing to block the blocking element against movement and in the unlocking position does not protrude from the module housing or protrudes from the module housing to a lesser extent than in the locking position to permit movement of the blocking element.

A door latch for a domestic electrical appliance comprising:

• a latch housing;
• a gripping unit which is arranged in the latch housing to be rotatable between a gripping position and an opening position and which in the gripping position grips a closing stirrup in order to hold a door of the domestic appliance closed and in the opening position releases the closing stirrup in order to open the door;
• a blocking element which is arranged to be movable between a blocking position and a release position and which assumes its blocking position when the gripping unit is in the gripping position and assumes its release position when the gripping unit is in the opening position, wherein the blocking element in the blocking position counteracts a rotation of the gripping unit in the direction towards the opening position;
• a locking element which is arranged to be movable between an unlocking position and a locking position and which in the unlocking position permits a movement of the blocking element between the blocking position and the release position and in the locking position blocks the blocking element against movement from the blocking position into the release position;
• and
• an actuating unit for displacing the locking element between the unlocking position and the locking position, wherein the actuating unit comprises an electric drive motor which is in drive connection with the locking element,
• wherein a continued rotation of the drive motor in the same direction of rotation effects a displacement of the locking element from the unlocking position to the locking position and back to the unlocking position;
• wherein the displacement of the locking element is effected by a plurality of run-up ramps distributed in a circumferential direction relative to the axis of rotation of a toothed wheel and a plurality of lugs which serve as ramp followers that travels on one of the plurality of run-up ramps when the toothed wheel rotates.

A door latch for a domestic electrical appliance comprising:

• a latch housing;
• a gripping unit which is arranged in the latch housing to be rotatable between a gripping position and an opening position and which in the gripping position grips a closing stirrup in order to hold a door of the domestic appliance closed and in the opening position releases the closing stirrup in order to open the door;
• a blocking element which is arranged to be movable, in particular linearly, between a blocking position and a release position and which assumes its blocking position when the gripping unit is in the gripping position and assumes its release position when the gripping unit is in the opening position, wherein the blocking element in the blocking position counteracts a rotation of the gripping unit in the direction towards the opening position;
• a locking element which is arranged to be movable, in particular linearly, between an unlocking position and a locking position and which in the unlocking position permits a movement of the blocking element between the blocking position and the release position and in the locking position blocks the blocking element against movement from the blocking position into the release position;
• and
• an actuating unit for displacing the locking element between the unlocking position and the locking position, wherein the actuating unit comprises an electric drive motor which is in drive connection with the locking element,
• wherein the actuating unit includes a wheel rotatingly driven by the electric motor, and wherein the wheel and the locking element together implement a ramp/ramp follower arrangement having a ramp track and a ramp follower designed to travel on the ramp track as the wheel rotates, wherein the ramp track is formed on one of the wheel and the locking element and the ramp follower is formed on the other of the wheel and the locking element, the ramp/ramp follower arrangement effective to convert a rotational movement of the wheel into a linear movement of the locking element.