Inertia sensor, belt retractor and injection molds for molding a support and a lever of an inertia sensor

A belt retractor comprising

• a housing with a recess,
• a blocking mechanism with a control disc, an inertia sensor for vehicle-sensitive activation of said blocking mechanism,
• said inertia sensor comprising a mass body, a support for said mass body, and a sensor lever with a control pawl, said sensor lever being mounted on said support for swivelling motion about a swivel axis and resting on said mass body,
• said control pawl having a free end defining a contact section for contact with said control disc, said support being provided with a first circular cylindrical surface area,
• the axis of said first circular cylindrical surface area being parallel to said swivel axis and running through the center of gravity of said mass body, an appendix being formed on said first circular cylindrical surface area of said support,
• said appendix having a free end on which a plate is provided and said plate being mounted non-rotatably in said recess.

A belt retractor comprising

• a housing with a recess,
• a blocking mechanism with a control disc, an inertia sensor for vehicle-sensitive activation of said blocking mechanism,
• said inertia sensor comprising a mass body, a support for said mass body, and a sensor lever with a control pawl,
• said sensor lever being mounted on said support for swivelling motion about a swivel axis and resting on said mass body,
• said control pawl having a free end defining a contact section for contact with said control disc,
• said support being provided with a first circular cylindrical surface area,
• the axis of said first circular cylindrical surface area being parallel to said swivel axis and running through the center of gravity of said mass body,
• an appendix being formed on said first circular cylindrical surface area of said support,
• said appendix having a longitudinal axis and being of a cylindrical shape with respect to said longitudinal axis, said appendix being mounted in said recess so as to be pivotable about said longitudinal axis.