Dispensing device
The invention relates to a dispensing device ( 11 ) for containers ( 33 ) containing a compound, comprising a compartment ( 12 ) for the container, with a piston rod ( 13 ) that can be moved relative to the compartment ( 12 ), with an extruding device ( 16 ) that comprises a drive wheel ( 21 ) for advancing the piston rod ( 13 ), a motor ( 22 ) for driving the drive wheel ( 21 ) as well as a planetary gear ( 23 ) that is interposed between the drive wheel ( 21 ) and the motor ( 22 ) and that has a gear rotational axis ( 24 ) and a ring gear ( 25 ). The ring gear ( 25 ) is provided with multiple recesses that are located along its circumference at intervals from each other. Moreover, the dispensing device ( 11 ) has an actuating switch ( 31 ) for actuating the motor ( 22 ) and a blocking element ( 36 ) that can be moved from a blocking position that blocks the ring gear ( 25 ) into a releasing position that releases this ring gear ( 25 ). A separate unlocking switch ( 41 ) is provided for actuating the blocking element ( 36 ), and the blocking element ( 36 ) can be pivoted around a pivot axis ( 37 ) in order to be moved from the blocking position into the releasing position.
1. A dispensing device for a container containing a compound, comprising:
a compartment for the container;
at least one piston rod movable relative to the compartment;
an extruding device including a drive wheel for advancing the at least one piston rod, a motor for driving the drive wheel, and a planetary gear interposed between the drive wheel and the motor, the planetary gear having a gear rotational axis and at least one ring gear, the at least one ring gear having multiple recesses located along a circumference at intervals from each other;
an actuating switch for actuating the motor;
a blocking element movable from a blocking position blocking the ring gear into a releasing position releasing the ring gear; and
a separate unlocking switch for actuating the blocking element, the blocking element being pivotable around a pivot axis in order to be moved from the blocking position into the releasing position;
the pivot axis of the blocking element running crosswise to the gear rotational axis of the planetary gear.
2. The dispensing device as recited in claim 1 further comprising a housing, the actuating switch for actuating the motor being located on a side of the housing facing the compartment, the unlocking switch being located on a further side of the housing facing away from the compartment.
3. The dispensing device as recited in claim 1 wherein the blocking element is spring-loaded by a spring element.
4. The dispensing device as recited in claim 1 wherein the recesses along the circumference of the ring gear are grooves having, with respect to the circumference of the ring gear, a bottom section with a depth, starting from an initial depth, decreasing towards the circumference.
5. The dispensing device as recited in claim 1 wherein the recesses along the circumference of the ring gear are grooves with side walls parallel to each other.
6. The dispensing device as recited in claim 5 where the side walls have different lengths.
7. The dispensing device as recited in claim 1 wherein the piston rod is a perforated piston rod.
8. The dispensing device as recited in claim 7 wherein the drive wheel is a toothed wheel interacting with the perforated piston rod.
9. The dispensing device as recited in claim 1 further comprising a battery pack supplying current to the motor.
10. The dispensing device as recited in claim 9 further comprising a handle, the battery pack detachably fixed to a free end of the handle.