Starter for an internal combustion engine

A starter for an internal combustion engine, comprising:

• a support;
• an electric motor arranged on the support for driving a pinion in rotation;
• a solenoid drive arranged on the support configured to axial adjust the pinion between an active position for driving a gearwheel of an internal combustion engine, and a passive position axially offset with respect to the active position;
• the solenoid drive including a ferromagnetic plunger stop structured and arranged to remain static with respect to the support, a plunger axially adjustable relative to the plunger stop, and a cylindrical coil arrangement arranged on the plunger stop surrounding a cylindrical coil interior in a circumferential direction;
• the coil interior extending axially from a proximal end portion of the coil arrangement to a distal end portion of the coil arrangement;
• the plunger stop including a cylindrical section projecting from the distal end portion axially into the coil interior;
• the plunger arranged axially opposite the cylindrical section of the plunger stop and, when the pinion is in the active position, protruding from the proximal end portion axially into the coil interior;
• wherein, when the pinion is in the passive position, a face-side plunger end of the plunger facing towards the cylindrical section is arranged axially in an area of the proximal end portion;
• wherein the cylindrical section extends into the coil interior such that a face end of the cylindrical section facing towards the plunger is closer to the proximal end portion than to the distal end portion;
• and
• wherein, when the pinion is in the passive position, the face-side plunger end is arranged axially out of the coil interior.

A starter for an internal combustion engine, comprising:

• a support;
• an electric motor arranged on the support for driving a pinion in rotation;
• a contact element configured to facilitate an electrical connection of two electrical contacts that connect the electric motor to a main electrical supply;
• a solenoid drive arranged on the support configured to axial adjust the pinion between an active position for driving a gearwheel of an internal combustion engine, and a passive position axially offset with respect to the active position;
• the solenoid drive including a ferromagnetic plunger stop structured and arranged to remain static with respect to the support, a plunger axially adjustable relative to the plunger stop, and a cylindrical coil arrangement arranged on the plunger stop surrounding a cylindrical coil interior in a circumferential direction;
• the coil interior extending axially from a proximal end portion of the coil arrangement to a distal end portion of the coil arrangement;
• the plunger stop including a cylindrical section projecting from the distal end portion axially into the coil interior;
• the plunger arranged axially opposite the cylindrical section of the plunger stop and, when the pinion is in the active position, protruding from the proximal end portion axially into the coil interior;
• wherein, when the pinion is in the passive position, a face-side plunger end of the plunger facing towards the cylindrical section is arranged axially in an area of the proximal end portion;
• wherein the cylindrical section extends into the coil interior such that a face end of the cylindrical section facing towards the plunger is closer to the proximal end portion than to the distal end portion;
• and
• wherein the plunger is connected to the contact element and, when the pinion is in the passive position, the contact element bears axially against a face end of the plunger stop facing away from the plunger.