ACTUATOR APPARATUS AND METHOD FOR MANUFACTURING AN ACTUATOR APPARATUS

• US 20120153752A1
• Filed: 12/12/2011
• Published: 06/21/2012
• Est. Priority Date: 12/21/2010
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Huebl, Jochen, HAAS, Martin, Mager, Roland
• Granted Patent: US 9,788,465 B2
• Time in Patent Office: Days
• US Class Current: 310/72
• CPC Class Codes: B60T 8/368 combined with other mechanical components, e.g. pump units, master cylinders
• CPC Class Codes: H01H 50/10 Electromagnetic or electrostatic shielding casings H01H50/02
• CPC Class Codes: H02K 11/026 Suppressors associated with brushes, brush holders or their supports
• CPC Class Codes: H02K 11/028 Suppressors associated with the rotor
• CPC Class Codes: H02K 5/225 Terminal boxes or connection arrangements specially adapted for submersible motors H02K5/132
• CPC Class Codes: H02K 7/14 Structural association with mechanical loads, e.g. with hand-held machine tools or fans with fan or impeller for cooling the machine H02K9/06
• CPC Class Codes: H05K 9/0018 with provisions to reduce aperture leakages in walls, e.g. terminals, connectors, cables
• CPC Class Codes: Y10T 29/49009 Dynamoelectric machine

Abstract

An actuator apparatus is described as having a stator device, a cover device, a contact device and an attenuation device. The stator device and the cover device are joined in such a manner so that a hollow space is formed between the stator device and the cover device. The cover device has an opening, through which the contact device is guided into the hollow space, so that the contact device runs at least partially in the hollow space and at least partially in the cover device. The attenuation device is positioned in the opening in such a manner so that a high-frequency electromagnetic radiation that travels through the opening is more highly attenuated by the attenuation device than the radiation would be attenuated without the presence of the attenuation device.

Claims

1. An actuator apparatus, comprising:

a stator device;

a cover device;

a contact device; and

an attenuation device;

wherein the stator device and the cover device are joined so that a hollow space is formed between the stator device and the cover device,

wherein the cover device has an opening, through which the contact device is guided into the hollow space, so that the contact device runs at least partially in the hollow space and at least partially in the cover device, and

wherein the attenuation device is positioned in the opening so that high-frequency electromagnetic radiation, which travels through the opening, is more highly attenuated by the attenuation device than the radiation would be attenuated without the presence of the attenuation device.

2. The actuator apparatus of claim 1, wherein the electromagnetic radiation is generated in the hollow space and moves away from the hollow space through the opening.

3. The actuator apparatus of claim 1, wherein the attenuation device surrounds the contact device.

4. The actuator apparatus of claim 1, wherein the attenuation device is configured to mechanically seal the hollow space.

5. The actuator apparatus of claim 1, wherein the attenuation device has a high resistance.

6. The actuator apparatus of claim 1, wherein the stator device is a pole pot.

7. The actuator apparatus of claim 1, further comprising:

a control device, wherein the control device is positioned at the contact device so that the attenuation device is situated between the hollow space and the control device.

8. The actuator apparatus of claim 1, wherein the attenuation device is adapted to at least one of the stator device and the cover device so that the attenuation device substantially attenuates the electromagnetic radiation, which is blocked by the at least one of the stator device and the cover device.

9. The actuator apparatus of claim 1, wherein the attenuation device is based on at least one of the following operating principles:

inductive attenuation;

inductive attenuation;

including magnetic hysteresis losses;

capacitive attenuation; and

an effect based on conductivity.

10. The actuator apparatus of claim 1, wherein the attenuation device has at least one of a plastic-bonded powder mixture and a ceramic.

11. The actuator apparatus of claim 1, wherein at its surface, the attenuation device has at least one of the following contacts:

a metallic layer;

a thin-walled metal sheet;

a thin-walled metal sheet having at least one elastic point contact; and

conductive adhesive.

12. The actuator apparatus of claim 1, wherein the attenuation device is formed in a plurality of pieces.

13. A method for manufacturing an actuator apparatus, the method comprising:

joining a stator device to a cover device so that a hollow space is formed between the stator device and the cover device;

providing the cover device with an opening, through which a contact device may be guided into the hollow space, so that the contact device runs at least partially in the hollow space and at least partially in the cover device;

positioning the attenuation device in the opening so that a high-frequency electromagnetic radiation that travels through the opening is more highly attenuated by the attenuation device than the radiation would be attenuated without the presence of the attenuation device.

14. The method of claim 13, wherein the attenuation device is at least one of cast and cemented so as to position it in the opening.