Self-warning system for unlocked connectors

• US 9,989,578 B2
• Filed: 06/24/2015
• Issued: 06/05/2018
• Est. Priority Date: 06/24/2015
• Status: Active Grant

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: Ghannam, Mahmoud Yousef, Carremm, Swadad A., Dudar, Aed M., Hage, Kam
• Primary Examiner(s): Assouad, Patrick
• Assistant Examiner(s): Pretlow, Demetrius
• Application Number:
  US14/748,663
• Publication Number:
  US 20160377668A1
• Time in Patent Office: 1,077 Days
• Field of Search: 324538, 439188, 439489, 439271-275, 73 498
• CPC Class Codes: G01R 31/52 Testing for short-circuits, leakage current or ground faults
• CPC Class Codes: G01R 31/54 Testing for continuity
• CPC Class Codes: G01R 31/68 Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
• CPC Class Codes: G01R 31/69 of terminals at the end of a cable or a wire harness; of plugs; of sockets, e.g. wall sockets or power sockets in appliances
• CPC Class Codes: H01R 13/5216 characterised by the sealing material, e.g. gels or resins
• CPC Class Codes: H01R 13/5219 Sealing means between coupling parts, e.g. interfacial seal
• CPC Class Codes: H01R 13/641 by indicating incorrect coupling; by indicating correct or full engagement

Abstract

A sealing gasket for an electrical connector system includes a resilient element configured to seal an interface between a header surface and a connector surface. The sealing gasket further includes thin-film sensing elements in contact with the resilient element that are configured to define a resistance of an electrical network based on a force applied to the sealing gasket. In some configurations, the sensing elements are arranged in a series electrical network and establish a conductive path when the force is greater than a predetermined force at each of the sensing elements. The thin-film sensing elements may be coupled to a controller that is configured to output a diagnostic based on a state of the electrical network.

Claims

1. An electrical connector system comprising:

a connector defining a connector surface;

a header configured to receive the connector and defining a header surface;

a sealing gasket disposed between the header surface and the connector surface; and

a plurality of thin film force sensing elements coupled with the sealing gasket, connected in a series electrical network, and configured to form a conductive path through the series electrical network in response to forces applied to predetermined locations of the sealing gasket exceeding a threshold that is an amount of force to maintain electrical contact of electrical connections between the header and the connector.

2. The electrical connector system of claim 1 wherein the connector or the header includes one or more contacts configured to form an electrical connection to the series electrical network.

3. The electrical connector system of claim 2 further comprising a controller electrically coupled to the contacts, and programmed to apply a predetermined voltage to the series electrical network, to measure a current through the series electrical network, and to, in response to the current through the series electrical network being less than a predetermined current, output a diagnostic code.

4. The electrical connector system of claim 1 wherein the conductive path is not formed when the forces applied at any one of the predetermined locations is less than the threshold.

5. The electrical connector system of claim 1 wherein the predetermined locations correspond to locations of the sensing elements.

6. The electrical connector system of claim 1 wherein a resistance associated with the conductive path changes as the forces change.

7. The electrical connector system of claim 6 wherein, in response to the forces being greater than the threshold, the resistance is less than a predetermined resistance.

8. An electrical connector sealing gasket comprising:

a first resilient element configured to seal an interface between a header surface and a connector surface;

a second resilient element; and

a thin film including a plurality of force sensing elements in contact with and disposed between the resilient elements and configured to define a series electrical network having a resistance that is defined by a compression force applied to the sealing gasket.

9. The electrical connector sealing gasket of claim 8 further comprising one or more electrical contacts configured to form an electrical connection between the electrical network and a controller.

10. The electrical connector sealing gasket of claim 8 wherein the force sensing elements are arranged at a plurality of predetermined locations and the resistance of the electrical network is less than a predetermined resistance when the compression force at each of the predetermined locations is greater than a predetermined force.

11. The electrical connector sealing gasket of claim 8 wherein the force sensing elements are arranged at a plurality of predetermined locations and the electrical network forms a conductive path through the thin film in response to the compression force being greater than a predetermined force at each of the predetermined locations.

12. The electrical connector sealing gasket of claim 8 wherein the force sensing elements are arranged at a plurality of predetermined locations and the resistance of the electrical network is greater than a predetermined resistance when the compression force at any of the predetermined locations is less than a predetermined force.

13. The electrical connector sealing gasket of claim 8 wherein the resilient element includes one or more locator elements protruding from the resilient element configured to cooperate with recesses in one or more of the header surface and the connector surface to position the electrical connector sealing gasket.

14. An electrical connector system comprising:

a sealing gasket disposed between a header surface and a connector surface; and

a plurality of thin film force sensing elements coupled to and arranged at predetermined locations of the sealing gasket and electrically coupled in a series electrical network, and configured to change resistance in response to changes in forces applied at each of the predetermined locations such that, in response to the forces being greater than a predetermined force at each of the predetermined locations, a total resistance of the series electrical network is less than a predetermined resistance.

15. The electrical connector system of claim 14 wherein the sensing elements are electrically coupled in a series electrical network such that, in response to the forces being less than a predetermined force at any of the predetermined locations, a total resistance of the series electrical network is greater than a predetermined resistance.

16. The electrical connector system of claim 14 further comprising a connector defining the connector surface, and a header configured to receive the connector and defining the header surface, and at least one electrical contact electrically coupled to the thin film force sensing elements and configured to form an electrical connection with contacts of the header or the connector.

17. The electrical connector system of claim 16 further comprising a controller programmed to apply a predetermined voltage to the thin film force sensing elements, to measure a current through the thin film force sensing elements, and to, in response to the current through any of the thin film force sensing elements being less than a predetermined current, output a diagnostic code.