EXTRUSION-COATING METHOD FOR A SENSOR DEVICE AND SENSOR DEVICE

• US 20120036930A1
• Filed: 08/11/2011
• Published: 02/16/2012
• Est. Priority Date: 08/13/2010
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Kunert, Peter
• Application Number:
  US13/207,890
• Publication Number:
  US 20120036930A1
• Time in Patent Office: Days
• US Class Current: 73/488
• CPC Class Codes: B29C 45/14639 for obtaining an insulating effect, e.g. for electrical components
• CPC Class Codes: B29C 45/14836 Preventing damage of inserts during injection, e.g. collapse of hollow inserts, breakage B29C45/14434 takes precedence
• CPC Class Codes: B29C 45/1671 with an insert
• CPC Class Codes: B60R 21/00 Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks safety belts or body harnesses in vehicles B60R22/00; seats constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats, B60N2/42; energy-absorbing arrangements for hand wheels for steering vehicles B62D1/11; energy-absorbing arrangements for vehicle steering columns B62D1/19
• CPC Class Codes: G01D 11/245 Housings for sensors
• CPC Class Codes: G01L 19/141 Monolithic housings, e.g. molded or one-piece housings
• CPC Class Codes: G01P 1/023 for acceleration measuring devices

Abstract

An extrusion-coating method for a sensor device, including the following steps:

• • providing a sensor module, which is completely enclosed by a first medium,
  • supporting by a support bar on the first medium of the sensor module,
  • extrusion-coating the sensor module using a second medium, so that a sealing connection is formed between the first medium and the second medium and
  • extracting the support bar. Also, a sensor device.

Claims

1. An extrusion-coating method for a sensor device, comprising:

providing a sensor module which is completely enclosed by a first medium;

supporting by a support bar on the first medium of the sensor module;

extrusion-coating the sensor module with a second medium, so that a sealing connection is formed between the first medium and the second medium; and

extracting the support bar.

2. The extrusion-coating method according to claim 1, wherein the first medium has hollow spheres with a hydrocarbon fluid.

3. The extrusion-coating method according to claim 1, further comprising electrically connecting a plug unit to the sensor module before and/or during the extrusion-coating of the sensor module.

4. The extrusion-coating method according to claim 1, further comprising forming a bushing in the second medium during the extrusion-coating.

5. A sensor device, comprising:

a support bar;

a sensor module;

a first medium completely surrounding the sensor module; and

a second medium partially surrounding the first medium, so that a support area for the support bar remains exposed.

6. The sensor device according to claim 5, wherein the sensor module includes an insert part and a sensor situated on the insert part.

7. The sensor device according to claim 6, further comprising a plug unit which is electrically connected to the sensor module and is formed in the second medium.

8. The sensor device according to claim 7, wherein the plug unit includes another insert part which is connected to the insert part of the sensor module by an insert part holder.

9. The sensor device according to claim 5, wherein hollow spheres having a hydrocarbon fluid are situated in the first medium.

10. The sensor device according to claim 5, wherein at least one of the first medium and the second medium is formed from a material selected from the following group of materials:

elastomer, thermoplastic, thermoplastic elastomer, polymer having an elastomer backing, polyurethane, silicone, liquid silicone or a combination thereof.