Tire inflation assistance monitoring system

• US 6,445,287 B1
• Filed: 11/10/2000
• Issued: 09/03/2002
• Est. Priority Date: 02/28/2000
• Status: Expired due to Fees

• Current Assignee: Donnelly Corporation (Magna International Incorporated)
• Original Assignee: Donnelly Corporation (Magna International Incorporated)
• Inventors: Schofield, Kenneth, Lynam, Niall R.
• Primary Examiner(s): TRIEU, VAN THANH
• Application Number:
  US09/710,016
• Time in Patent Office: 662 Days
• Field of Search: 340/442, 340/444, 340/445, 340/447, 340/448, 340/431, 340/988, 362/494, 116/34.R, 116/202, 307/10.1
• US Class Current: 340/442
• CPC Class Codes: B60C 23/00 Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
• CPC Class Codes: B60C 23/0401 characterised by the type of alarm
• CPC Class Codes: B60C 23/0406 Alarms noticeable from outside the vehicle, e.g. indication in side mirror, front light or audible alarms B60C23/0403, B60C23/0405 take precedence
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
• CPC Class Codes: B60Q 1/2661 mounted on parts having other functions on wheels B60Q1/326
• CPC Class Codes: B60Q 1/2665 on rear-view mirrors lighting devices for vehicle interior on or for rear-view mirrors B60Q3/258
• CPC Class Codes: B60R 1/02 Rear-view mirror arrangements periscope arrangements B60R1/10
• CPC Class Codes: B60R 1/12 Mirror assemblies combined with other articles, e.g. clocks
• CPC Class Codes: B60R 1/1207 with lamps; with turn indicators
• CPC Class Codes: G02B 2027/0118 comprising devices for improving the contrast of the display / brillance control visibility
• CPC Class Codes: G02B 2027/012 comprising devices for attenuating parasitic image effects
• CPC Class Codes: G02B 6/00 Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings

Abstract

A vehicular tire inflation monitoring system is provided for a vehicle that includes at least one tire inflation indicator assembly, visible or audible exterior of the vehicle or experienced by tactile feedback, preferably positioned at a vehicle portion outside the interior cabin of the vehicle, such as at an exterior rearview mirror assembly. The at least one tire inflation indicator assembly provides an indication of the inflation condition of at least one of the vehicle tires. The tire inflation monitoring system includes a control receiving at least one input from at least one tire pressure sensor sensing pressure of at least one vehicle tire. The control produces an output to illuminate the at least one tire inflation indicator assembly or cause it to make a sound audible outside the interior cabin of the vehicle and indicative of a tire pressure condition.

Claims

1. A vehicular exterior rearview mirror system, comprising:

an exterior rearview mirror assembly mounted on a side of a vehicle, said exterior rearview mirror assembly comprising a reflective element and a support for said reflective element; and

a tire inflation monitoring system including at least one audible tire inflation indicator assembly positioned at said exterior rearview mirror assembly, said audible tire inflation indicator assembly generating a sound audible to a person exterior the vehicle engaged in an act of adjusting the tire pressure of at least one vehicle tire mounted on a wheel of the vehicle, said audible tire inflation indicator providing an audible indication of the inflation condition of the at least one vehicle tire, wherein said tire inflation monitoring system includes a control receiving input from a tire pressure sensor sensing pressure of the at least one vehicle tire and said control producing an output to cause said audible tire inflation indicator assembly to generate a sound indicative of a tire pressure condition of the at least one vehicle tire.

2. The vehicular exterior rearview mirror system in claim 1 wherein said support comprises a fixed portion attached to the vehicle and a movable portion.

3. The vehicular exterior rearview mirror system in claim 2 wherein said at least one audible tire inflation indicator assembly is positioned at one of said fixed portion and said movable portion.

4. The vehicular exterior rearview mirror system in claim 3 wherein said at least one audible tire inflation indicator assembly is positioned at said fixed portion.

5. The vehicular exterior rearview mirror system in claim 3 wherein said at least one audible tire inflation indicator assembly is positioned at an under surface of said fixed portion.

6. The vehicular exterior rearview mirror system in claim 3 wherein said at least one audible tire inflation indicator assembly is positioned at said fixed portion adjacent said reflective element.

7. The vehicular exterior rearview mirror system in claim 3 wherein said at least one audible tire inflation indicator assembly is positioned at said movable portion.

8. The vehicular exterior rearview mirror system in claim 7 wherein said reflective element comprises an electrochromic reflective element.

9. The vehicular exterior rearview mirror system in claim 1 wherein said at least one audible tire inflation indicator assembly produces a pattern of sound indicative of a tire being in an over inflated condition.

10. The vehicular exterior rearview mirror system in claim 1 wherein said control receives an input indicative of operation of the vehicle.

11. The vehicle exterior rearview mirror system in claim 10 wherein said control includes a lockout function which precludes producing said output during operation of the vehicle.

12. The vehicle exterior rearview mirror system in claim 11 wherein said control produces said output during a particular period of time after operation of the vehicle is discontinued.

13. The vehicle exterior rearview mirror system in claim 12 wherein said period of time is less than or equal to about 2 hours.

14. The vehicle exterior rearview mirror system in claim 12 wherein said period of time is less than or equal to about 30 minutes.

15. The vehicle exterior rearview mirror system in claim 12 wherein said period of time is less than or equal to about 15 minutes.

16. The vehicle exterior rearview mirror system in claim 11 wherein said control receives another input from a vehicle door lock sensor and produces said output in response to the vehicle door being in an unlocked state.

17. The vehicle exterior rearview mirror system in claim 16 wherein said control produces said output for a predetermined period of time in response to said door lock sensor indicating the vehicle door changes to an unlocked state.

18. The vehicle exterior rearview mirror system in claim 17 wherein said predetermined period of time is less than or equal to about 2 hours.

19. The vehicle exterior rearview mirror system in claim 17 wherein said predetermined period of time is less than or equal to about 30 minutes.

20. The vehicle exterior rearview mirror system in claim 17 wherein said predetermined period of time is less than or equal to about 15 minutes.

21. The vehicle exterior rearview mirror system in claim 1 wherein said control receives an input from a vehicle door lock sensor and produces said output in response to the vehicle door being in an unlocked state.

22. The vehicle exterior rearview mirror system in claim 21 wherein said control produces said output for a predetermined period of time in response to said door lock sensor indicating the vehicle door changes to an unlocked state.

23. The vehicle exterior rearview mirror system in claim 22 wherein said predetermined period of time is less than or equal to about 2 hours.

24. The vehicle exterior rearview mirror system in claim 22 wherein said predetermined period of time is less than or equal to about 30 minutes.

25. The vehicle exterior rearview mirror system in claim 22 wherein said predetermined period of time is less than or equal to about 15 minutes.

26. The vehicle exterior rearview mirror system in claim 1 wherein said control produces said output in response to said at least one tire pressure sensor sensing a substantial change in tire pressure.

27. The vehicle exterior rearview mirror system in claim 1 wherein said at least one audible tire pressure indicator assembly produces a first indication in response to pressure sensed by said at least one tire pressure sensor being substantially within a predetermined normal pressure range.

28. The vehicle exterior rearview mirror system in claim 27 wherein said at least one audible tire pressure indicator assembly produces at least one of a second indication in response to pressure sensed by said at least one tire pressure sensor being substantially less than said predetermined normal pressure range and a third indication in response to pressure sensed by said at least one tire pressure sensor being substantially greater than said predetermined normal pressure range.

29. The vehicle exterior rearview mirror system in claim 28 wherein said at least one audible tire pressure indicator assembly produces a fourth indication in response to pressure sensed by said at least one tire pressure sensor undergoing change indicative of the associated tire undergoing inflation.

30. The vehicle exterior rearview mirror system in claim 28 wherein said first through third indications are produced with one sound.

31. The vehicle exterior rearview mirror system in claim 30 wherein one of said indications is produced by continuously indicating said one indication sound, another of said indications is produced by repeating said one indication sound at a first predetermined rate and another of said indications is produced by repeating said one indication sound at a second higher predetermined rate.

32. The vehicle exterior rearview mirror system in claim 31 wherein said first indication is produced by continuously indicating said one indication sound, said second indication produced by repeating said one indication sound at said first predetermined rate, said third indication is produced by flashing said one indication sound at said second higher predetermined rate.

33. The vehicle exterior rearview mirror system in claim 28 wherein said first through third indications are produced with more than one sound.

34. The vehicle exterior rearview mirror system in claim 33 wherein said first indication is produced by indication with one said sound, said second indication is produced with a different sound and said third indication is produced by repeating said different sound.

35. A vehicular tire pressure monitoring system comprising:

a tire pressure indicator assembly including a control and at least one of an audible tire inflation status indicator and a visual tire inflation status indicator, said tire inflation status indicator providing indication of the inflation condition of a vehicle tire to a person exteriorly of the vehicle when the person is engaged in an act of adjusting the tire pressure of the vehicle tire, said control receiving inputs from tire pressure sensors sensing pressure of the vehicle tires and said control producing outputs to actuate said tire inflation status indicator.

36. The vehicular tire pressure monitoring system in claim 35 further comprising a tactile tire pressure indicator at at least one tire, said tactile tire pressure indicator providing tactile feedback of the tire'"'"'s pressure to the person adjusting the tire'"'"'s pressure.

37. The vehicular tire pressure monitoring system in claim 35 wherein said tire inflation status indicator is positioned exteriorly of the vehicle.

38. The vehicular tire pressure monitoring system in claim 37 wherein said tire inflation status indicator is positioned at an exterior rearview mirror assembly.

39. The vehicular tire pressure monitoring system in claim 38 wherein said exterior rearview mirror assembly includes a fixed portion and a movable portion, said tire inflation status indicator being positioned at said fixed portion.

40. The vehicular tire pressure monitoring system in claim 39 wherein said tire inflation status indicator is positioned at an under surface of said fixed portion.

41. The vehicular tire pressure monitoring system in claim 39 wherein said rearview mirror assembly includes a reflective element, said tire inflation indicator being positioned at said fixed portion adjacent said reflective element.

42. The vehicular tire pressure monitoring system in claim 38 wherein said rearview mirror assembly includes a fixed portion and a movable portion, said tire pressure indicator assembly being positioned at said movable portion.

43. The vehicular tire pressure monitoring system in claim 42 wherein said exterior rearview mirror assembly includes an electrochromic reflective element.

44. The vehicular tire pressure monitoring system in claim 35 wherein said control receives an input indicative of operation of the vehicle.

45. The vehicular tire pressure monitoring system in claim 44 wherein said control includes a lockout function which precludes producing said outputs during operation of the vehicle.

46. The vehicular tire pressure monitoring system in claim 45 wherein said control produces said outputs during a particular period of time after operation of the vehicle is discontinued.

47. The vehicular tire pressure monitoring system in claim 46 wherein said period of time is less than or equal to about 2 hours.

48. The vehicular tire pressure monitoring system in claim 46 wherein said period of time is less than or equal to about 30 minutes.

49. The vehicular tire pressure monitoring system in claim 46 wherein said period of time is less than or equal to about 15 minutes.

50. The vehicular tire pressure monitoring system in claim 45 wherein said control receives another input from a vehicle door lock sensor and produces said outputs in response to the vehicle doors being in an unlocked state.

51. The vehicular tire pressure monitoring system in claim 50 wherein said control produces said outputs for a predetermined period of time in response to said door lock sensor indicating the vehicle door changes to an unlocked state.

52. The vehicular tire pressure monitoring system in claim 51 wherein said predetermined period of time is less than or equal to about 2 hours.

53. The vehicular tire pressure monitoring system in claim 51 wherein said predetermined period of time is less than or equal to about 30 minutes.

54. The vehicular tire pressure monitoring system in claim 51 wherein said predetermined period of time is less than or equal to about 15 minutes.

55. The vehicular tire pressure monitoring system in claim 54 wherein said control produces said output for a predetermined period of time in response to said door lock sensor indicating the vehicle door changes to an unlocked state.

56. The vehicular tire pressure monitoring system in claim 55 wherein said predetermined period of time is less than or equal to about 2 hours.

57. The vehicular tire pressure monitoring system in claim 55 wherein said predetermined period of time is less than or equal to about 30 minutes.

58. The vehicular tire pressure monitoring system in claim 55 wherein said predetermined period of time is less than or equal to about 15 minutes.

59. The vehicular tire pressure monitoring system in claim 35 wherein said control receives an input from a vehicle door lock sensor and produces said outputs in response to the vehicle door being in an unlocked state.

60. The vehicular tire pressure monitoring system in claim 35 wherein said control produces said outputs in response to an associated tire pressure sensor of said tire pressure sensors sensing a substantial change in tire pressure.

61. The vehicular tire pressure monitoring system in claim 35 wherein said tire inflation status indicator produces a first indication in response to pressure sensed by an associated tire pressure sensor of said tire pressure sensors being substantially within a predetermined normal pressure range.

62. The vehicular tire pressure monitoring system in claim 61 wherein said tire inflation status indicator produces at least one of a second indication in response to pressure sensed by an associated tire pressure sensor of said tire pressure sensors being substantially less than said predetermined pressure range and a third indication in response to pressure sensed by an associated tire pressure sensor of said tire pressure sensors being substantially greater than said predetermined pressure range.

63. The vehicular tire pressure monitoring system in claim 62 wherein said tire inflation status indicator produces a fourth indication in response to pressure sensed by an associated tire pressure sensor of said tire pressure sensors undergoing change indicative of the associated tire undergoing inflation.

64. The vehicular tire pressure monitoring system in claim 62 wherein said first through third indications are produced with one of a color and a sound.

65. The vehicular tire pressure monitoring system in claim 64 wherein one of said indications is produced by continuously indicating said one of a color and a sound, another of said indications is produced by flashing said one of a color and a sound at a first predetermined rate and another of said indications is produced by flashing said one of a color and a sound at a second higher predetermined rate.

66. The vehicular tire pressure monitoring system in claim 65 wherein said first indication is produced by continuously indicating said one of a color and a sound, said second indication is produced by flashing said one of a color and a sound at said first predetermined rate, said third indication is produced by flashing said one of a color and a sound at said second higher predetermined rate.

67. The vehicular tire pressure monitoring system in claim 62 wherein said first through third indications are produced with more than one of a color and a sound.

68. The vehicular tire pressure monitoring system claim 67 wherein said first indication is produced by indication with one of a color and a sound, said second indication is produced with a different one of a color and a sound, and said third indication is produced by flashing said different one of a color and a sound.

69. The vehicular tire pressure monitoring system according to claim 35 wherein said indication comprises a sound.

70. The vehicular tire pressure monitoring system according to claim 69 wherein said sound is produced by a horn.

71. A tire inflation monitoring system suitable for use on a vehicle comprising:

a control receiving input from a tire pressure sensor sensing pressure of a vehicle tire; and

at least one tire inflation indicator positioned at one of an interior portion and an exterior portion of the vehicle, said tire inflation indicator providing at least one of a visual indication visible exteriorly of the vehicle and an audible indication audible exteriorly of the vehicle of the inflation condition of the vehicle tire, and said control producing an output to actuate said tire inflation indicator in response to a tire pressure condition.

72. The tire inflation monitoring system in claim 71 wherein said tire inflation indicator is positioned at said exterior portion.

73. The tire inflation monitoring system according to claim 72 further comprising an exterior rearview mirror assembly at said exterior portion, said tire inflation indicator being positioned at said exterior rearview mirror assembly.

74. The tire inflation monitoring system in claim 72 wherein said exterior portion comprises an exterior body panel.

75. The tire inflation monitoring system in claim 72 wherein said exterior portion comprises a door panel.

76. The tire inflation monitoring system in claim 72 wherein said exterior portion comprises a side marker.

77. The tire inflation monitoring system in claim 71 wherein said control receives an input indicative of operation of the vehicle.

78. The tire inflation monitoring system in claim 71 wherein said control includes a lockout function which precludes producing said output during operation of the vehicle.

79. The tire inflation monitoring system in claim 71 wherein said control produces said output during a particular period of time after operation of the vehicle is discontinued.

80. The tire inflation monitoring system in claim 79 wherein said period of time is less than or equal to about 2 hours.

81. The tire inflation monitoring system in claim 71 wherein said control receives an input from a vehicle door lock sensor and produces said output in response to the vehicle door being in an unlocked state.

82. The tire inflation monitoring system in claim 71 wherein said tire inflation indicator provides an audible indication.

83. The tire inflation monitoring system in claim 82 wherein said audible indication is provided by a horn.

84. A tire inflation assistance system comprising:

a tire pressure sensor adapted for sensing pressure of a tire mounted on a wheel of a vehicle, the tire being pressurized by a gas;

a valve stem adapted for allowing the gas to be introduced into or escape from the tire;

a controller for receiving input from said tire pressure sensor; and

a vibrator element, said controller producing an output to cause said vibrator element to vibrate as a function of the pressurized gas in the tire to thereby provide a tactile indication of the tire pressure condition of the vehicle tire at said valve stem.

85. The tire pressure monitoring system according to claim 84 wherein said vibrator element vibrates said stem.

86. The tire pressure monitoring system according to claim 84 wherein said vibrator element vibrates when said tire is over pressurized.

87. The tire pressure monitoring system according to claim 86 wherein said vibrator element ceases to vibrate when the tire pressure in the vehicle tire is reduced to the correct tire pressure.

88. The tire pressure monitoring system according to claim 84 wherein said vibrator element vibrates when the tire pressure in the vehicle tire is too low and ceases to vibrate when the tire pressure in the vehicle tire reaches the correct tire pressure.

89. The tire pressure monitoring system according to claim 84 wherein said stem, said controller, said tire pressure sensor, and said vibrator element are contained in a unitary module.

90. The tire pressure monitoring system according to claim 84 wherein said pressurized gas comprises pressurized air.