SYSTEM FOR ASSISTING THE ATTACHMENT OF A TRAILER TO A VEHICLE

• US 20090236825A1
• Filed: 03/20/2008
• Published: 09/24/2009
• Est. Priority Date: 03/20/2008
• Status: Active Grant

• Current Assignee: DENSO Corporation, Toyota Motor Corporation
• Original Assignee: Denso International America Incorporated (DENSO Corporation), Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation)
• Inventors: Sato, Yoshihisa, Yanagawa, Hirohiko, Brown, Lisa M., Trager, Christian A., Okuda, Masalo, Angeliu, Jeffrey E., Wakamatsu, Toshihiro, McBride, Justin, Keeling, Thomas, Kurpinski, Christopher, Wiegand, Michael, Chiba, Tanemichi
• Granted Patent: US 7,777,615 B2
• Time in Patent Office: Days
• US Class Current: 280/477
• CPC Class Codes: B60D 1/36 for facilitating connection, e.g. hitch catchers , visual guide means, signalling aids B60D1/465 takes precedence; vehicle signalling in general B60Q; optical arrangements specially adapted for viewing trailer-hitches B60R1/003

Abstract

A system for assisting the alignment of a hitch pin mounted on the rear of a vehicle with a hitch socket mounted on the front of a trailer. The system includes a camera mounted to the vehicle and positioned to capture an image rearwardly of the vehicle. A video display is contained within the vehicle which displays the image captured by the camera. A processor is also contained in the vehicle which calculates a preferred path of travel of the vehicle to position the hitch pin in alignment with the hitch socket. The processor is programmed to provide instructions to an operator of the vehicle of the required steering to maintain the vehicle on the preferred path of travel. The processor recalculates the preferred path of travel whenever the vehicle veers from the preferred path of travel by a preset threshold.

Claims

1. A system for assisting the alignment of a hitch pin mounted on a rear of a vehicle with a hitch socket mounted on a front of a trailer comprising:

a camera mounted to the vehicle, said camera positioned to capture an image rearwardly of the vehicle,

a video display contained in the vehicle which displays the image captured by the camera,

a processor contained in the vehicle which calculates a preferred path of travel of the vehicle to position the hitch pin in alignment with the hitch socket, said processor programmed to provide instructions to an operator of the vehicle of the required steering to maintain the vehicle on the preferred path of travel, and said processor recalculating said preferred path of travel whenever the vehicle veers from said preferred path of travel by a defined threshold.

2. The invention as defined in claim 1 wherein said processor provides said instructions by displaying said instructions on said video display.

3. The invention as defined in claim 1 wherein said processor provides said instructions by providing audible signals to the operator of the vehicle.

4. The invention as defined in claim 1 and comprising means for selecting a predetermined path shape for said preferred path of travel.

5. The invention as defined in claim 1 wherein said processor displays said preferred path of travel on said video display.

6. The invention as defined in claim 1 wherein said video display includes a touch screen to input information to said processor, and said processor programmed to input a desired shape of the preferred path of travel from said touch screen.

7. The invention as defined in claim 1 wherein said video display includes a touch screen to input information to said processor, and said processor programmed to input the position of the trailer hitch socket from said touch screen.

8. The invention as defined in claim 7 and said processor programmed to display a zoom image of the position of the trailer hitch socket.

9. The invention as defined in claim 1 and comprising means for illuminating a rear view of the vehicle.

10. The invention as defined in claim 1 wherein said processor is programmed to display the distance between said hitch pin and said hitch socket on said video display.

11. The invention as defined in claim 1 and comprising means for raising said hitch pin once aligned with the hitch socket.

12. The invention as defined in claim 1 and comprising means for automatically steering the vehicle along said preferred path of travel.

13. The invention as defined in claim 1 and comprising an RFID tag mounted to the hitch socket and a cooperating RFID transceiver mounted to the vehicle, said RFID transceiver generating an output signal to said processor which is used by said processor to calculate the preferred path of travel.

14. The invention as defined in claim 1 wherein said defined threshold is reduces as the distance between the trailer and vehicle is reduced.

15. The invention as defined in claim 14 wherein said defined threshold is user selected.

16. A system for assisting the alignment of a hitch pin mounted on a rear of a vehicle with a hitch socket mounted on a front of a trailer comprising:

a camera mounted to the vehicle, said camera positioned to capture an image rearwardly of the vehicle,

a video display contained in the vehicle which displays the image captured by the camera,

a processor contained in the vehicle which calculates a preferred path of travel of the vehicle to position the hitch pin in alignment with the hitch socket, said processor programmed to provide instructions to an operator of the vehicle of the required steering to maintain the vehicle on the preferred path of travel, and

means for illuminating a rear vision of the vehicle.

17. The invention as defined in claim 16 wherein said illuminating means comprises a lamp.

18. A system for assisting the alignment of a hitch pin mounted on a rear of a vehicle with a hitch socket mounted on a front of a trailer comprising:

a camera mounted to the vehicle, said camera positioned to capture an image rearwardly of the vehicle,

a video display contained in the vehicle which displays the image captured by the camera,

a processor contained in the vehicle which calculates a preferred path of travel of the vehicle to position the hitch pin in alignment with the hitch socket, said processor programmed to provide instructions to an operator of the vehicle of the required steering to maintain the vehicle on the preferred path of travel, and

means for raising the hitch pin when the hitch pin is aligned with the hitch socket.

19. The invention as defined in claim 18 wherein said raising means comprises means for lifting the rear of the vehicle.

20. The invention as defined in claim 18 wherein said lifting means comprises an air suspension system on the vehicle.

21. A system for assisting the alignment of a hitch pin mounted on a rear of a vehicle with a hitch socket mounted on a front of a trailer comprising:

a camera mounted to the vehicle, said camera positioned to capture an image rearwardly of the vehicle,

a video display contained in the vehicle which displays the image captured by the camera,

a processor contained in the vehicle which calculates a preferred path of travel of the vehicle to position the hitch pin in alignment with the hitch socket, said processor programmed to provide instructions to an operator of the vehicle of the required steering to maintain the vehicle on the preferred path of travel, and provide a warning to the user if the vehicle veers from the said preferred path of travel by a defined threshold.