ANTI-ENTRAPMENT SYSTEM

• US 20090158857A1
• Filed: 02/27/2009
• Published: 06/25/2009
• Est. Priority Date: 07/09/2001
• Status: Active Grant

• Current Assignee: Uusi LLC (Nartron Corporation)
• Original Assignee: Nartron Corporation
• Inventors: Washeleski, John, Shank, David W., Perrin, Randall L.
• Granted Patent: US 7,908,927 B2
• Time in Patent Office: Days
• US Class Current: 73/780
• CPC Class Codes: B60N 2/002 Seats provided with an occupancy detection means mounted therein or thereon detection means responsive to presence or absence of children B60N2/266
• CPC Class Codes: B60R 21/01516 using force or pressure sensing means
• CPC Class Codes: B60R 21/01532 using electric or capacitive field sensors
• CPC Class Codes: B60R 21/0154 in combination with seat heating
• CPC Class Codes: E05F 15/46 responsive to changes in electrical capacitance
• CPC Class Codes: E05Y 2400/66 Wireless transmission
• CPC Class Codes: E05Y 2900/548 Trunk lids
• CPC Class Codes: G01B 7/22 using change in capacitance
• CPC Class Codes: G01D 5/2417 by varying separation
• CPC Class Codes: G01R 27/2605 Measuring capacitance capacitive sensors G01D5/24
• CPC Class Codes: H03K 17/955 using a capacitive detector
• CPC Class Codes: H03K 17/962 Capacitive touch switches
• CPC Class Codes: H03K 17/975 using a capacitive movable element
• CPC Class Codes: H03K 2017/9602 characterised by the type or shape of the sensing electrodes
• CPC Class Codes: H03K 2217/96078 Sensor being a wire or a strip, e.g. used in automobile door handles or bumpers

Abstract

An anti-entrapment system for preventing an object from being entrapped by a translating device includes a sensor positionable adjacent to or on the translating device. The sensor has a non-conductive compressible jacket with a cavity, and first and second conductors positioned within the cavity opposite from one another. In response to an object pressing against the jacket, the jacket compresses from a non-compressed state in which the conductors are not in electrical contact to a compressed state in which the conductors are in electrical contact. The sensor has a compressible support either inside or outside of the cavity. In response to the object pressing against the jacket while the jacket is compressed, the support compresses to allow the jacket to compress further in order reduce pinching of the object by the translating device when the object is between the jacket and the translating device.

Claims

1. An anti-entrapment system for preventing an object from being entrapped by a translating device, the system comprising:

a sensor positionable adjacent to or on a translating device, the sensor having a non-conductive compressible jacket with a cavity, a first conductor positioned within the cavity adjacent to a first portion of the jacket and connected to the jacket, and a second conductor positioned within the cavity adjacent to a second portion of the jacket opposite the first jacket portion and connected to the second jacket portion such that the conductors are opposite from one another;

wherein, in response to an object pressing against the first jacket portion towards the second jacket portion, the jacket compresses from a non-compressed state in which the conductors are separated from one another to a compressed state in which the first conductor is moved towards the second conductor and contacts the second conductor;

the sensor further having a compressible support outside of the cavity and positioned on the second jacket portion;

wherein, in response to the object pressing against the first jacket portion towards the second jacket portion while the jacket is in the compressed state, the support compresses away from the second jacket portion to reduce pinching of the object by a translating device when the object is between the first jacket portion and the translating device.

2. The system of claim 1 wherein:

the jacket is a non-conductive compressible elastomer jacket.

3. The system of claim 1 wherein:

the support is a compressible dielectric element.

4. The system of claim 1 wherein:

the support is a compressible elastomer support.

5. The system of claim 1 wherein:

the first conductor is sheathed within a first conductive carrier connected to the jacket and the second conductor is sheathed within a second conductive carrier connected to the second jacket portion.

6. The system of claim 5 wherein:

each carrier is a conductive elastomer carrier.

7. The system of claim 1 wherein:

the support has a stiffer compression factor than the jacket.

8. The system of claim 1 further comprising:

a controller in communication with the first and second conductors, wherein the controller controls the translating device in response to the conductors contacting to prevent the translating device from entrapping the object.

9. The system of claim 1 wherein:

at least one of the conductors is sufficiently flexible so as to allow local deformation of the at least one the conductors in a region of the jacket being touched by an object.

10. The system of claim 1 wherein:

at least one of the conductors includes at least one of a conductive film and a conductive paint.

11. The system of claim 1 wherein the translating device is an automobile window, wherein:

the sensor is positionable on the automobile window to move with the automobile window as the automobile window moves.

12. The system of claim 1 wherein the translating device is an automobile window, wherein:

the sensor is positionable on an automobile window frame for the automobile window.

13. An anti-entrapment system for preventing an object from being entrapped by a translating device, the system comprising:

a sensor positionable adjacent to or on a translating device, the sensor having a non-conductive compressible jacket with a cavity, a first conductor positioned within the cavity adjacent to a first portion of the jacket and connected to the jacket, and a second conductor positioned within the cavity adjacent to a second portion of the jacket opposite the first jacket portion and connected to the jacket such that the conductors are opposite from one another;

the sensor further having a conductive compressible support within the cavity between the first and second conductors;

wherein, in response to an object pressing against the jacket, the jacket compresses from a non-compressed state in which the conductors are separated from the support to a compressed state in which the conductors move toward the support and contact the support;

wherein, in response to the object pressing against the jacket while the jacket is in the compressed state, the support compresses to allow the jacket to compress further in order reduce pinching of the object by a translating device external to the jacket when the object is between the jacket and the translating device.

14. The system of claim 13 wherein:

the jacket is a non-conductive compressible elastomer jacket.

15. The system of claim 13 wherein:

the support is a conductive compressible dielectric element.

16. The system of claim 13 wherein:

the support is a conductive compressible elastomer support.

17. The system of claim 13 wherein:

the first conductor is sheathed within a first conductive carrier connected to the jacket and the second conductor is sheathed within a second conductive carrier connected to the jacket.

18. The system of claim 17 wherein:

each carrier is a conductive elastomer carrier.

19. The system of claim 13 wherein:

the support has a stiffer compression factor than the jacket.

20. The system of claim 13 further comprising:

a controller in communication with the first and second conductors, wherein the controller controls the translating device in response to the conductors contacting the support to prevent the translating device from entrapping the object.

21. The system of claim 13 wherein:

at least one of the conductors is sufficiently flexible so as to allow local deformation of the at least one the conductors in a region of the jacket being touched by an object.

22. The system of claim 13 wherein:

at least one of the conductors includes at least one of a conductive film and a conductive paint.

23. The system of claim 13 wherein the translating device is an automobile window, wherein:

the sensor is positionable on the automobile window to move with the automobile window as the automobile window moves.

24. The system of claim 13 wherein the translating device is an automobile window, wherein:

the sensor is positionable on an automobile window frame for the automobile window.

25. An anti-entrapment system for preventing an object from being entrapped by a translating device, the system comprising:

a sensor having a non-conductive compressible jacket with a cavity, a compressible dielectric element within the cavity, and first and second conductors within the jacket on opposite sides of the dielectric element such that the conductors are separated from one another by a separation distance, the conductors having a capacitance dependent upon the separation distance;

wherein the capacitance of the conductors changes in response to a geometry of the sensor changing as a result of at least one of the conductors and the dielectric element deforming in response to an object touching the jacket;

the jacket further having a detail for attaching the sensor either to a seal of a translating device or directly to the translating device.

26. The system of claim 25 further comprising:

a controller for controlling the translating device as a function of the capacitance of the conductors to prevent the translating device from entrapping the object.

27. The system of claim 25 wherein:

the jacket is a non-conductive compressible elastomer jacket.

28. The system of claim 25 wherein:

the dielectric element is a compressible dielectric elastomer.

29. The system of claim 25 wherein:

the detail includes a dovetailing feature.

30. The system of claim 25 wherein:

the detail includes an angled side wall of the jacket.