Method for manufacturing a pole tube for an electromagnet
AssigneeRobert Bosch GmbH
InventorsChristof Ott, Klaus Schudt, Friedrich Moser
Life of this patent
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Abstract
A method for manufacturing a pole tube having two magnetic pole tube components and having one nonmagnetic ring, which is situated axially between the pole tube components, for an electromagnet, in particular for a solenoid valve of an automatic transmission in a motor vehicle, including the following: concentric configuration and/or centering of the pole tube components and of the ring, in particular on a centering pin; form-fitting connection, in particular by extrusion coating and/or casting an exterior lateral surface of the pole tube components and of the ring.
Claims7
A method for manufacturing a pole tube for an electromagnet, the method comprising:
- concentrically aligning (a) a first magnetic pole tube component, (b) a second magnetic pole tube component, and (c) a nonmagnetic ring arranged axially between the first and second magnetic components;
- form-fittingly connecting the concentrically aligned (a) the first magnetic component, (b) the second magnetic component, and (c) the nonmagnetic ring;
- and
- extrusion coating a coating material onto exterior lateral surfaces of the nonmagnetic ring, first magnetic pole tube component, and the second magnetic pole tube component, wherein the coating material is molded onto and in contact with the exterior lateral surfaces of the nonmagnetic ring, the first magnetic pole tube component, and the second magnetic pole tube component,
- wherein, prior to the concentrically aligning, grooves are applied to the lateral surface of the ring.
Dependencies are inferred from the claim text.