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11. 发明专利

JPH058619A TIRE PRESSURE CONTROL DEVICE 失效
公开(公告)号：JPH058619A
公开(公告)日：1993-01-19
申请号：JP27663291
申请日：1991-09-28
申请人： TOYOTA MOTOR CORP , NIPPON DENSO CO
发明人： OTA MUNEO , YOSHIDA SHUNTARO
IPC分类号： B60C23/00 , G01L17/00
摘要： PURPOSE:To improve the durability of a tire pressure control device by which the tire pressure of wheels can be controlled from the car body side in a car running condition. CONSTITUTION:A pressure control device 70 mainly consisting of a compressor 10, booster valves 42 to 46, and reducing valves 60 and 62, and controlled.by a controller 72, is connected to the tire inner chambers 26 and 36 of the right side and the left side wheels, passing through rotary air seal devices 22 and 32, and manual coaks 24 and 34. Furthermore, when the boosting speed of the pressure of the pressure control device 70, when the controller 72 is used for the tire pressure control, is fast abnormally, the tire control is stopped and the pressure is made at the atmosperic pressure. On the other hand, when the reducing speed of the pressure in the tire pressure controlling condition is fast abnormally, the pressure control device 70 is converted to the boosting operation, and when the boosting speed of the pressure at that time is fast abnormally, the tire pressure control is stopped making the pressure at the atmospheric pressure. And after that in either case, when the pressure becomes to the pressure of the releasing or higher, the tire pressure control is to be restarted.

12. 发明专利

JPH058618A TIRE PRESSURE CONTROL DEVICE 失效
公开(公告)号：JPH058618A
公开(公告)日：1993-01-19
申请号：JP27663191
申请日：1991-09-28
申请人： TOYOTA MOTOR CORP , NIPPON DENSO CO
发明人： OTA MUNEO , YOSHIDA SHUNTARO
IPC分类号： B60C23/00 , G01L17/00
摘要： PURPOSE:To improve the durability of a tire pressure control device by which the tire pressure of wheels can be controlled from the car body side in the car running condition. CONSTITUTION:A pressure control device 70 mainly consisting of a compressor 10, booster valves 42 to 46, and reducing valves 60 and 62, and controlled by a controller 72, is connected to the tire inner chambers 26 and 36 of the right side and the left side wheels, passing through rotary air seal devices 22 and 32, and manual cocks 24 and 34 Furthermore, when the boosting speed of the pressure of the pressure control device 70 when the controller 72 is used to control the tire pressure is fast abnormally, the tire pressure control is stopped, and the pressure is made at the atmospheric pressure. On the other hand, when the reducing speed of the pressure in the tire pressure controlling condition is fast abnormally, the pressure control device 70 is converted to the boosting operation, and when the boosting speed of the pressure at that time is fast abnormally, the pressure control is stopped making the pressure at the atmosphric pressure, and after that in either case, when the pressure becomes to the pressure of the releasing or higher, the tire pressure control is to be restarted.

13. 发明专利

JPH058617A TIRE PRESSURE CONTROL DEVICE 失效
公开(公告)号：JPH058617A
公开(公告)日：1993-01-19
申请号：JP18516191
申请日：1991-06-28
申请人： TOYOTA MOTOR CORP , NIPPON DENSO CO
发明人： OTA MUNEO , YOSHIDA SHUNTARO
IPC分类号： B60C23/00
摘要： PURPOSE:To improve the durability of a tire pressure control device by which the tire pressure of wheels can be controlled from the car body side in a car running condition. CONSTITUTION:A pressure control device 70 mainly consisting of a compressor 10, booster valves 42 to 46, and reducing valves 60 and 62, and controlled by a controller 72, is connected to the tire inner chambers 26 and 36 of the right side and the left side wheels, passing through rotary air seal devices 22 and 32, and manual cocks 24 and 34 (switch valves). Furthermore, the boosting speed of the pressure when the controller 72 is used in a boosting operation of the pressure control device 70 is calculated by using pressure sensors 18 and 28, and when the boosting speed is fast abnormally, it is decided that the manual cocks 24 and 34 are in the closed condition, and the boosting operation is stopped, and after that, the pressure is reduced to the atmospheric pressure. During the time when the manual cocks 24 and 34 are in the closed condition, the rotary air seal devices 22 and 32 are not to be under the pressure, and their durability is improved.

14. 发明专利

JPH04154413A REMOTE MEASURING METHOD OF TIRE PRESSURE 失效
公开(公告)号：JPH04154413A
公开(公告)日：1992-05-27
申请号：JP27910090
申请日：1990-10-19
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： TANAKA MASAICHI , IWATA YUJI , SAITO MAKOTO , KUROYANAGI MASATOSHI , YOSHIDA SHUNTARO , KIDA MAKOTO
IPC分类号： G01L17/00 , B60C23/00
摘要： PURPOSE:To learn accurate tire pressure speedily in any case by connecting a control line to the low pressure side for a short period of time through operation of a pressure control valve before measurement so as to measure tire pressure accurately and speedily. CONSTITUTION:A pressure control valve 355 is in the neutral position and a pressure discharge valve 358 is in the first position at the time of non- operation. Therefore, a control line 351 is shut off from a compressor 352 and an air cylinder 354. On the other hand, the atmospheric pressure is introduced into a tire pressure adjusting valve 300 from the control line 351 to block a passage. Consequently, the inside of a tire 101 is shut off from the outside, and pressure at that time is maintained. I this case, the same operation as that at the time of pressure reduction control is carried out intentionally to shorten equilibrium reaching time after pressure is increased and controlled. That is, after increase and control of pressure ends, the pressure control valve 355 is not only returned to the neutral position from the first position, but also moved to the second position for a short period of time only. Thus, pressure of air in the control line 351 is instantaneously released in the atmosphere via the pressure control valve 355 and a muffler 361.

15. 发明专利

JPH04129809A ABNORMALITY DETECTION DEVICE OF PNEUMATIC PRESSURE ADJUSTING DEVICE OF TIRE 失效
公开(公告)号：JPH04129809A
公开(公告)日：1992-04-30
申请号：JP25363890
申请日：1990-09-21
申请人： TOYOTA MOTOR CORP , NIPPON DENSO CO
发明人： KIDA MAKOTO , YOSHIDA SHUNTARO
IPC分类号： B60C23/00 , B60C23/02
摘要： PURPOSE:To detect abnormality accurately without affecting the pneumatic pressure adjusting function of abnormality detection system in a pneumatic pressure adjusting device of tire for a vehicle by judging abnormality of the device based on the amount of change of tire pneumatic pressure detection signal per unit time, and giving alarm. CONSTITUTION:An electric control circuit 30 adjusts tire pressure by controlling each solenoid SOL1, SOL2 based on data from a car speed sensor 31, a load sensor 12, a road surface sensor 33, a manual switch 34, and a pressure sensor 23 and lights an alarm lamp 35. At this time, the amount of change of pressure signal which is input from the pressure sensor 23 per unit time is detected. The device detects whether the amount of change is within the range of the predetermined tolerance or not and judges whether an adjusting device 10 is abnormal or not. If it is abnormal, the device lights the alarm lamp 35.

16. 发明专利

JPH04349005A SEAL DEVICE FOR TIRE AIR PRESSURE ADJUSTING DEVICE 失效
公开(公告)号：JPH04349005A
公开(公告)日：1992-12-03
申请号：JP15252591
申请日：1991-05-27
申请人： TOYOTA MOTOR CORP , NIPPON DENSO CO
发明人： OTA MUNEO , YOSHIDA SHUNTARO
IPC分类号： B60C23/00
摘要： PURPOSE:To provide a highly durable seal device for tire air pressure adjusting device by assembling a housing unit coaxially and rotatably on an axis of rotation through a bearing, and radially displaceably and unrotatably on an support member, and interposing air seal coaxially between the housing and the axis of rotation. CONSTITUTION:A sealing device is provided between a support member (knuckle) 16 rotatably supporting a wheel 10 and its axis 52 of rotation. A housing 53 is assembled on the axis 52 of rotation coaxially and rotatably through a bearing 54 and is assembled to a support member 16 radially displaceably and unrotatably. An air seal 55 which interrupts air supply passages 52a and 53a from open air is interposed between the housing 53 and the axis 52 of rotation coaxially, and an air supply tube 57 is hermetically connected to the housing through a seal elastic body 57.

17. 发明专利

JPH04154412A TIRE PRESSURE ADJUSTING DEVICE 失效
公开(公告)号：JPH04154412A
公开(公告)日：1992-05-27
申请号：JP27910190
申请日：1990-10-19
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： ONOKI NOBUYOSHI , IWATA YUJI , TANAKA MASAICHI , SAITO MAKOTO , MIYAZAWA HIDEKI , YOSHIDA SHUNTARO , KIDA MAKOTO
IPC分类号： B60C23/00
摘要： PURPOSE:To perform adjustment of pressure in a short period of time and simplify measuring system by performing minute adjustment of tire pressure repeatedly by means of a minute adjustment control means after controlling tire pressure through estimation of tire pressure from the outside during adjustment of pressure by means a differential pressure estimate control means. CONSTITUTION:Pressure of a tire 1 is estimated based on a differential pressure between the tire 1 and a piping 20 which is expressed by the primary equation of pressure value of a pressure sensor 4 and a pressure control valve 6 is controlled so that pressure coincides with the desired pressure of the tire 1 when there is an air flow between differential pressure estimate control means 21 of an electronic control section 2 and the piping 20. Also, a minute adjustment control means 22 estimates the pressure of the tire 1 obtained by subtracting at least a pressure drop of a tire pressure adjusting valve 13 from the pressure sensor 4 in the case of no air flow when pressure of the tire 1 becomes the desired pressure valve by the differential pressure estimate control means 21, and adjust the pressure control valve 6 repeatedly so that pressure coincides with the desired pressure of the tire 1. Thus, it is possible to perform adjustment of pressure in a short period of the time and achieve simplification of the structure.

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