Electric control motor

• US 4,536,731 A
• Filed: 09/27/1982
• Issued: 08/20/1985
• Est. Priority Date: 06/24/1982
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Kubach, Hans, Kemmner, Ulrich, Grimm, Gerold
• Primary Examiner(s): Duggan, Donovan F.
• Application Number:
  US06/423,920
• Time in Patent Office: 1,058 Days
• Field of Search: 310/36-39, 310/43, 335/272, 335/222
• US Class Current: 335/272
• CPC Class Codes: H01F 7/145 Rotary electromagnets with variable gap with fixed gap or torque motors H02K26/00

Abstract

An electric control motor and a method of making the same are proposed for the driving of a control element. The electric control motor comprises a housing made from a ferromagnetic material, a housing enclosure and a cap, a shaft rotatably disposed therein on which an armature is disposed for association with arcuate poles provided in the housing. An electromagnetic coil comprising coil portions is mounted axially with respect to the armature in coil retainers encapsulating the armature and shaft as a unit for ease of assembly in the housing.

Claims

1. An electric control motor comprising a housing of ferromagnetic material, said housing being provided with an electromagnetic coil and an armature, said armature being associated with poles provided in said housing and further being rotatable in opposition to a return force, said housing further comprising a cup-shaped housing bottom, having an open end and a cap for sealing said open end, said electromagnetic coils include at least two interconnected, oppositely disposed coil portions which are mounted in coil retainers which can be interlocked together within said housing so as to confront extremities of said armature and axially disposed within said housing with respect to said armature, said armature being disposed on a shaft axially of said housing and further that said shaft is supported in said cap and said housing bottom, said chamber being defined by said poles, an inner wall of said housing and said electromagnetic coil.

2. An electric control motor as in claim 1, further characterized in that said armature and shaft are encapsulated by said coil retainers to form a unit, whereby assembly of said electric control motor is simplified.