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91. 发明专利

JPH0367769A ANTI-SKID CONTROL DEVICE 失效
公开(公告)号：JPH0367769A
公开(公告)日：1991-03-22
申请号：JP20363989
申请日：1989-08-05
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： ICHIKAWA HIROYUKI , KUWANA KAZUTAKA , OKAMOTO KUNIAKI , YOSHIDA TSUYOSHI , KAMIKADO MASARU , NAKANISHI NOBUYASU , SUGITANI TATSUO , SAKAI KAZUNORI
IPC分类号： B60T8/58 , B60T8/1761 , B60T8/32 , B60T8/34 , B60T8/42 , B60T8/66
摘要： PURPOSE:To prevent a driving wheel from being locked at early stages by calculating the recovery acceleration of wheel speed between maximum and minimum values and comparing the recovery acceleration with a set value, and, when the recovery acceleration is less than a set value, correcting vehicle acceleration detected by an acceleration detecting means to a smaller value. CONSTITUTION:An anti-skid control device 100 for controlling the brake fluid pressure of driving wheels RR, RL has an actuator 12 to be interposed between fluid pressure piping 7 and 8 for guiding the brake pressure of a master cylinder 3 to respective wheel cylinders 10, 11 for rear wheels, and adjusts brake pressure using the actuator 12. In an ECU for controlling the actuator 12, the minimum value and maximum value of wheel speed after the brake fluid pressure is reduced are detected according to wheel speeds and the recovery acceleration of the wheel speed from the minimum value to maximum value is calculated. When the recovery acceleration is less than a set value, vehicle acceleration detected by an acceleration detecting means 21 is corrected to a smaller one and estimated vehicle speed and the like are calculated according to the vehicle acceleration after correction.

92. 发明专利

JPS6460466A ANTI-SKID DEVICE FOR VEHICLE 失效
公开(公告)号：JPS6460466A
公开(公告)日：1989-03-07
申请号：JP21703387
申请日：1987-08-30
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： NISHIMURA TAKUMI , KOSAKAI ASAO , HIRONAKA HIDEHARU , NOGUCHI NOBORU , NAKANISHI NOBUYASU , HOSODA TOMOHIKO
IPC分类号： B60T8/58 , B60T8/172 , B60T8/1764
摘要： PURPOSE:To restrain a difference in braking force between right and left wheels by throttling braking pressure liquid on the high mu road surface side when a control portion on the low mu road surface side starts to control in case of braking right and left wheels while the right and left wheels run on road surfaces having abnormally different coefficients of friction. CONSTITUTION:The above device has the first and second control portions comprising solenoid valves 56A, 56B and cut valve-piston portions 57A, 57B, which are adapted to control brake fluid pressure according to output of sensors 31, 32 for detecting the rotational frequencies of a right front wheel and a left front wheel to prevent skid of wheels in brake fluid pressure circuits B1, B2 connecting the wheel cylinders 21, 22 of the right front wheel and the left front wheel. In this case, a fluid pressure control valve 60 is interposed in a fluid pressure circuit between a master cylinder 12 in the brake fluid pressure circuit and a junction P of the brake fluid pressure circuits B1, B2. The fluid pressure control valve 60 is operated when either the first or second control portion starts controlling to throttle a passage.

93. 发明专利

JPS63297159A ACTUATOR FOR WHEEL BRAKING DEVICE 失效
公开(公告)号：JPS63297159A
公开(公告)日：1988-12-05
申请号：JP13292087
申请日：1987-05-28
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： KUWANA KAZUTAKA , TAKEUCHI HIROAKI , NOGUCHI NOBORU , NAKANISHI NOBUYASU
IPC分类号： B60T8/48 , B60T8/175 , B60T8/1761 , B60T8/58
摘要： PURPOSE:To improve the fitting property to a vehicle and reduce the cost by connecting the first and second pipelines to a master cylinder and a wheel cylinder respectively to complete the fitting to the vehicle and using a liquid pressure pump as a liquid pressure source at the time of lock prevention and slip prevention. CONSTITUTION:The fitting of an actuator A to a vehicle is completed when the first pipeline 21 is connected to a master cylinder 11 and the second pipeline 22 is connected to a wheel cylinder 12. At the time of antiskid control, a transfer valve 28 connects the pipeline 21 to the discharge path 27b of a liquid pressure pump 27 and connects a passage 29 to a reservoir 23, and the function that the liquid pressure in the pipeline 22 is reduced and the braking force is decreased, the function that the liquid pressure is held and the braking force is held, and the function that the liquid pressure is fed and the braking force is increased are obtained in response to the locking state of a wheel 13 at the time of braking, and the lock of the wheel 13 is prevented. The transfer valve 28 connects the pipeline 21 to the reservoir 23 and connects the discharge path 27b of the pump 27 to the passage 29 at the time of traction control, the wheel 13 is braked in response to the slip at the time of start and acceleration, and the slip is prevented.

94. 发明专利

JPS63270270A ANTI WHEEL LOCK DEVICE 失效
公开(公告)号：JPS63270270A
公开(公告)日：1988-11-08
申请号：JP10655587
申请日：1987-04-30
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： ANDO MASAKI , TAKEUCHI HIROAKI , TODA HIROSHI , SHIBATA TOSHIYA , NOGUCHI NOBORU , NAKANISHI NOBUYASU
IPC分类号： B60T8/48
摘要： PURPOSE:To improve operational feeling of brake pedal by restricting communication between a master cylinder and a supply/discharge switching valve through a throttle valve when the liquid pressure in the master cylinder exceeds over a setting level. CONSTITUTION:When the liquid pressure in a master cylinder 11 exceeds over a setting level upon stepping of a pedal 10, a throttle valve V functions to restrict communication with a supply switching valve 21. Since braking function is previously provided, liquid pressure in wheel cylinders 12a-12d can be increased sufficiently with small flow. When a control circuit 20 detects a locked condition, switching valves 21, 22 are switched to operate a liquid pressure pimp 24 which is coupled with a reservoir 23 to reduce the pressure or coupled with a check valve 25 to increase the pressure. But, since communication is restricted through the throttle valve V, increasing feeling of liquid pressure in a circuit at the bide of the master cylinder 11 is limited. Consequently, uncomfortable feeling is not provided to a driver through a brake pedal, resulting in improvement of operational feeling.

95. 发明专利

JPS63154456A WHEEL LOCK PREVENTING DEVICE 失效
公开(公告)号：JPS63154456A
公开(公告)日：1988-06-27
申请号：JP30504686
申请日：1986-12-19
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： KUWANA KAZUTAKA , KUROMITSU HIROSHI , TAKEUCHI HIROAKI , NOGUCHI NOBORU , NAKANISHI NOBUYASU
IPC分类号： B60T8/48 , B60T8/42
摘要： PURPOSE:To aim at enhancing the durability of a wheel lock device by disposing a cut-off valve which closes when the hydraulic pressure in a master cylinder exceeds the hydraulic pressure in a wheel cylinder, in a brake circuit, and by disposing a regulator valve in a discharge circuit for a hydraulic pump. CONSTITUTION:In a wheel lock preventing device, a control device 29 judges whether a wheel 13 is locked or not, in accordance with the output of a wheel rotational speed detecting sensor 25 when a the depression of a brake pedal 10 is detected in association with the closing of a switch 26, and controls the change-over of a feed/discharge change-over valve 21 when the wheel is locked. In this arrangement, a normally open cut-off valve V1 which is close when the pressure in a master cylinder 11 exceeds the pressure in a wheel cylinder 12 is disposed in pipe lines 31, 32 connecting between the master cylinder 11 and the feed/discharge change-over valve 21. Further, a regulator valve 2 which regulates the discharge pressure of a hydraulic pump 23 at a regulated pressure slightly higher, by a predetermined value, than a reference pressure equal to the hydraulic pressure in the wheel cylinder 12, is disposed in a discharge pipe line 38.

96. 发明专利

JPS62166150A WHEEL LOCK PREVENTING DEVICE 失效
公开(公告)号：JPS62166150A
公开(公告)日：1987-07-22
申请号：JP840386
申请日：1986-01-18
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： ADACHI YOSHIHARU , NISHIMURA TAKUMI , TAKEUCHI HIROAKI , NOGUCHI NOBORU , NAKANISHI NOBUYASU
IPC分类号： B60T8/48
摘要： PURPOSE:To prevent the operative fluctuation of a master cylinder by providing fluid pressure switching valves for disconnecting the master cylinder from suction/exhaust switching valves in an antiskid operative condition so as to leave predetermined amount of a hydraulic medium in the pressure chamber of the master cylinder. CONSTITUTION:When the locking state of each wheel is detected by a microcomputer 50, and each of switching valves 31-36 is operated, each of fluid pressure switching valves 37, 38 disconnects each of change valves 31-36 from a master cylinder 12. Also, a fluid pressure output from a regulator valve 60 is introduced into each of suction/exhaust switching valves 31, 33, 35, and wheel cylinders 21-24 are pressurized and depressurized through the suction/exhaust switching valves 31, 33, 35. Now, in the antiskid operative state when the switching valves 31-36 are operating, the fluid pressure medium is left in both pressure chambers of the master cylinder 12. And, the fluid pressure medium from the regulator is supplied to only the wheel cylinders 21-24. Therefore, the operation of the master cylinder 12 is not fluctuated.

97. 发明专利

JPS628851A ANTISKID DEVICE FOR VEHICLE 失效
公开(公告)号：JPS628851A
公开(公告)日：1987-01-16
申请号：JP14858685
申请日：1985-07-05
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： ADACHI YOSHIHARU , NISHIMURA TAKUMI , SAITO TADAO , NAKANISHI NOBUYASU , NOGUCHI NOBORU
IPC分类号： B60T8/40 , B60T8/38 , B60T8/42 , B60T8/44
摘要： PURPOSE:To ease a driver's mind with the provision of an appropriate pedal vibration by configurating a device in such a way that, while an antiskid device is in operation, vibration which takes place at a brake pedal, can be set as required when a vehicle is running on either slippery roads or nonskid roads. CONSTITUTION:While an antiskid device is in operation, a force which counteracts against a spring (67) force, acts on a floating piston 65, because of difference in pressure between a hydraulic circuit 3 to a brake master cylinder and a hydraulic circuit 17 to wheel brake cylinders. In a similar manner, a force which counteracts against a spring (68) force, acts on a floating piston 66, because of difference in pressure between the hydraulic line 3 and the hydraulic pressure line 17. Accordingly, the piston 65 is allowed to reciprocate depending on the balance of force between a force due to difference in pressure within the hydraulic circuits 3 and 17, and the quantity of the spring (67) force. And the piston 66 reciprocates in a similar manner depending on the balance of force between a force due to the above said pressure difference and the quantity of the spring (68) force. Thus, the displacement in sliding of both the pistons 65 and 66 causes the change of volume to take place in the pressure line 3 allowing the specified amount of vibration to take place at a brake pedal 1, and this vibration can be set to be a given value.

98. 发明专利

JPS61202963A ANTI-SKID DEVICE FOR VEHICLE 失效
公开(公告)号：JPS61202963A
公开(公告)日：1986-09-08
申请号：JP4388285
申请日：1985-03-05
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： NISHIMURA TAKUMI , SAITO TADAO , NAKANISHI NOBUYASU , NOGUCHI NOBORU
IPC分类号： B60T8/40 , B60T8/1761 , B60T8/42
摘要： PURPOSE:To decrease the consumed liquid quantity of an accumulator and reduce the number of operations of a pump by providing a valve to apply the predetermined minimum operating liquid pressure from the accumulator to a decompression piston when a brake pedal is released. CONSTITUTION:A valve 8 selectively dividing a decompression circuit into a brake master cylinder 2 side portion and a wheel cylinder 18 side portion and a decompression piston 9 opening or closing this valve 8 are provided. Solenoid valves 59, 57 to discharge the operating liquid pressure from the decompression piston 9 when wheels tend to be locked and to apply the operating liquid pressure to the decompression piston 9 during the normal rotation of wheels are also provided. In this case, a regulator valve 33 consisting of a valve section 42 switching the communication between the operating liquid pressure chamber 20 of the decompression piston 9 and an accumulator 29, a valve section 44 switching the communication between the operating liquid pressure chamber 20 and a drain circuit 36, and a piston 53 is provided.

99. 发明专利

JPS58224839A Antiskid device for automobile 失效
标题翻译：汽车防盗装置
公开(公告)号：JPS58224839A
公开(公告)日：1983-12-27
申请号：JP10901382
申请日：1982-06-23
申请人： Aisin Seiki Co Ltd , Toyota Motor Corp
发明人： KOSAKAI ASAO , WATABE SHINGO , NAKANISHI NOBUYASU
IPC分类号： B60T8/40 , B60T8/42 , B60T13/16 , B62D5/07
CPC分类号： B60T13/16 , B60T8/4225
摘要： PURPOSE: To raise rapidly power pressure in response to master cylinder pressure to improve fuel consumption and durability by providing a valve body for receiving the master cylinder pressure and a valve body provided with a spring on a regulator for generating the power pressure.
CONSTITUTION: Liquid flow from a pump 20 is throttled by a regulator 22 to generate power pressure necessary for a actuator 23. The regulator 22 is provided with a piston 51 for receiving pressure in a master cylinder 12, a first valve body 49 urged thereby and a second valve body 50 urged by a spring 55. The power pressure is rapidly raised by the first valve body 49 until pressure set by the spring 55 is reached, and then thereafter pressure is raised in response to the master cylinder pressure. In non-braking time the regulator 22 does not generate the power pressure so that fuel consumption and durability are improved, and in braking the rise of the power pressure is rapid so that the operation is not delayed.
COPYRIGHT: (C)1983,JPO&Japio
摘要翻译：目的：通过提供用于接收主缸压力的阀体和在调节器上设置有用于产生动力压力的弹簧的阀体，来提高响应于主缸压力的快速功率压力以提高燃料消耗和耐久性。构成：来自泵20的液体流被调节器22节流以产生致动器23所需的动力压力。调节器22设置有用于接收主缸12中的压力的活塞51，由此推动的第一阀体49 由弹簧55推动的第二阀体50.由第一阀体49迅速升高功率压力，直到达到由弹簧55设定的压力，然后响应于主缸压力而升高压力。在非制动时，调节器22不产生功率压力，从而提高了燃料消耗和耐用性，并且在制动中，功率压力的上升很快，从而操作不被延迟。

100. 发明专利

JPS58211949A Braking force holding device for vehicle 失效
标题翻译：制动器用于车辆的装置
公开(公告)号：JPS58211949A
公开(公告)日：1983-12-09
申请号：JP9470982
申请日：1982-06-04
申请人： Aisin Seiki Co Ltd , Toyota Motor Corp
发明人： FUJII TAKASHI , IKEDA MITSUO , WATABE SHINGO , NAKANISHI NOBUYASU
IPC分类号： B60T7/06 , B60T7/04 , B60T7/12
CPC分类号： B60T7/04
摘要： PURPOSE:To make accuracy control for a moving clearance in a clutch plate ever so easier, by installing the clutch plate interlocking with a one-way clutch operating for only a step-on direction of a brake pedal and a spacer controlling the clearance between the clutch plate and an electromagnet attracting the former. CONSTITUTION:When car speed comes to below the setting speed, an electromagnet 22 is excited and thereby a clutch plate 21 is attracted to a friction plate 29. For this reason, a shaft 12 interlocking with a brake pedal is checked in its reverse rotation together with both a casing 14 and a one-way clutch 13, therefore the brake pedal is locked at its step-on position. In case pedalling force is insufficient, if the pedal is retrodden, the shaft 12 rotates only in a step-on direction so that the brake can be reoperated. On the other hand, when an accelerator pedal is stepped on, the electromagnet 22 is unenergized and attraction in the clutch plate 21 is released by a spring 35. The brake pedal is therefore restored to its original position. Accordingly, a clearance between the clutch plate 21 and the friction plate 29 is properly maintained by a spacer 20 to be given resilient force by a spring 25.
摘要翻译：目的：为了使离合器板中的移动间隙的精度控制变得更加容易，通过将离合器板安装在与仅在制动踏板的步进方向上操作的单向离合器和控制间隔离合器板和吸引前者的电磁体。构成：当车速达到设定速度以下时，电磁铁22被激励，从而将离合器片21吸引到摩擦片29.为此，检查与制动踏板互锁的轴12的反向旋转在一起同时具有壳体14和单向离合器13，因此制动踏板被锁定在其踏入位置。在踏力不足的情况下，如果踏板倒塌，则轴12仅沿着踩踏方向旋转，使得制动器能够重新操作。另一方面，当加速器踏板踩踏时，电磁体22未通电，并且通过弹簧35释放离合器片21中的吸引力。因此制动踏板被恢复到其初始位置。因此，通过间隔件20适当地保持离合器片21和摩擦片29之间的间隙，由弹簧25赋予弹性力。

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