Advics Co., Ltd.

Aisin Seiki Kabushiki Kaisha

Toyoda Koki Kabushiki Kaisha

Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Jtekt Corporation

Other

Advices Co., Ltd.

Yoshiyuki Yasui

Hiroyuki Kodama

Yuji Muragishi

Eiichi Ono

Minekazu Momiyama

Kenji Asano

Hiroaki Kato

Toshihisa Kato

Kenji Tozu

Hiroaki Aizawa

Takayuki Itoh

Takayuki Miyajima

Masanobu Fukami

Wataru Tanaka

Norio Yamazaki

Mamoru Sawada

Akira Tanaka

Katsuhiro Asano

Yuzo Imoto

Junya Nagaya

Naotoshi Satake

Hideaki Koto

Hiroshi Matsuoka

Shuuichi Buma

Hiroaki Niino

Motoshi Suzuki

Shinichiro Yukoku

Keita Nakano

Masaki Maruyama

Takashi Sato

Naoki Yabusaki

Shinji Takeuchi

Atsushi Takeuchi

Manabu Tanaka

Kazuya Maki

Masaru Sugai

Shingo Urababa

Daisuke Yamada

Yasuo Takahara

Yuuki Ohta

Toshio Yasutake

Yoshito Kondo

Atsushi Ikematsu

Satoshi Hirata

Tomonori Katsuyama

Naomi Emura

Yuzou Imoto

Takayuki Yamamoto

Noboru Sugiura

Katsumi Suzuki

Takaji Umeno

Hideyuki Suzuki

Hiroaki Yoshida

Tsuyoshi Yoshida

Hiroshi Toda

Takashi Yonekawa

Shoji Ito

Toshinori Okita

Akiya Taneda

Takayuki Ohta

Yasushi Amano

Yutaka Ohnuma

Yoji Inoue

Seiichi Kojima

Kazutaka Noro

Chihiro Nitta

Yoshitoshi Watanabe

Toshio Kohno

Shoji Ogawa

Yasukuni Ojima

Jun Mihara

Masanori Miyashita

Yoshito Kondou

Yusuke Oshio

Michio Ishiguro

Jaesung Cho

Yosuke Kuki

Yoshiharu Nishizawa

Tomoko Sugawara

Masaaki Kawashima

Syoji Ogawa

Tsugiharu Matsunaga

Akio Sakai

Takuya Hirano

Eiichiro Iwase

Takayuki Myajima

This electric braking device is provided with: an electric motor MTR that, in accordance with an operation amount Bpa of a braking operation member BP, generates a pressing force Fba, being a force pressing a friction member MSB against a rotary member KTB that rotates integrally with a wheel WHL of the vehicle; and a circuit board KBN to which a processor MPR and a bridge circuit BRG are mounted. The device is further provided with a rotation angle sensor MKA for detecting the rotation angle Mka of the electric motor, and drives the electric motor MTR on the basis of the rotation angle Mka. An end face Mmk of the rotation angle sensor MKA is fixed so as to be in contact with the circuit board KBN. The device is further provided with a pressing force sensor FBA for detecting the pressing force Fba, and drives the electric motor MTR on the basis of the pressing force Fba. An end face Mfb of the pressing force sensor FBA is fixed so as to be in contact with the circuit board KBN.

Electric braking device for vehicle

A braking control device drives an electric motor based on a command pressing force corresponding to the required wheel braking force, and presses a friction member against a rotation member fixed to the wheel to generate a wheel braking force. The braking control device includes: a sensor for detecting wheel speed; a sensor for detecting the actual pressing force applied by the friction member; and a controller for calculating the target pressing force based on the command pressing force, and controlling the motor so that the target and actual pressing forces match. The controller calculates wheel slip state quantity based on the wheel speed, and executes, based on the slip state quantity, slip suppression control for reducing the degree of wheel slippage. Based on the actual pressing force at the start of the slip suppression control, the controller reduces the command pressing force and calculates the target pressing force.

Braking control device for vehicle

A braking control device generates a force for pressing a friction member against a rotating member fixed to a wheel of the vehicle via an electric motor controlled by a controller in accordance with an operation amount of an operation member. A pressing force sensor detects a pressing force actual value, and a rotation angle sensor detects a rotation angle actual value of the motor. The controller determines whether an operating state of the pressing force sensor is appropriate. When the operating state is appropriate, the motor output is adjusted based on the pressing force actual value, a correlation between the pressing force actual value and the rotation angle actual value is stored, and a conversion calculation map is created based on the correlation. When the operating state is not appropriate, the motor output is adjusted based on the rotation angle actual value and the conversion calculation map.

An electric braking device includes: an electric motor for pressing a friction member against a rotary member that rotates integrally with a vehicle wheel; a lock mechanism for locking rotation of the electric motor and applying a parking brake in accordance with operation on a parking switch; and a control for driving the electric motor and the lock mechanism. The control increases the electricity amount sent to the electric motor when a pressing force is less than a preset lower value at the time the parking switch is switched from off to on, starts actuating the lock mechanism when the pressing force equals or exceeds the lower value, and, when the pressing force is greater than a preset upper value greater than or equal to the lower value, starts actuating the lock mechanism when the pressing force equals or exceeds the upper value.

This electric braking device for a vehicle imparts to the wheels of the vehicle a braking torque in accordance with the output of an electric motor. A vehicle body-side electronic control unit calculates a command value for the output of the electric motor on the basis of the amount of operation performed on a braking operation member. A wheel-side electronic control unit adjusts the output of the electric motor on the basis of the command value. The vehicle body-side electronic control unit calculates the vehicle body speed on the basis of the wheel speed. The wheel-side electronic control unit adjusts the output of the electric motor so as to prevent an increase in slippage of the wheels on the basis of the vehicle body speed and the wheel speed.

This electric braking device is provided with: an electric motor MTR that, in accordance with an operation amount Bpa of a braking operation member BP caused by the driver of the vehicle, generates a pressing force Fba, being a force pressing a friction member MSB against a rotary member KTB that rotates integrally with a wheel WHL of the vehicle; a caliper CRP fixed to the electric motor MTR; a circuit board KBN to which a microprocessor MPR and a bridge circuit BRG are mounted, such that the electric motor MTR is driven; and a motor pin PMT that feeds power from the circuit board KBN to the electric motor MTR. The motor pin PMT penetrates a holding member HJB and is pressed into the circuit board KBN, which is fixed to the caliper CRP by the holding member HJB and the motor pin PMT.

A vehicular electrical braking device equipped with a control means for driving an electric motor and a lock mechanism, the electric motor pressing a friction member against a rotary member, and the lock mechanism applying parking brake. The control means comprises steps of: calculating an instruction pressure force on the basis of the amount of brake operation; calculating a parking pressure force on the basis of a parking signal; determining as a target pressure force the greater one of the instruction pressure force and the parking pressure force; adjusting the amount of power to be applied to the electrical motor such that an actual pressure force matches the target pressure force on the basis of the target pressure force and the actual pressure force; and controlling the operation of the lock mechanism on the basis of the actual pressure force.

The present invention is provided with a power transmission member rotatably supported by a caliper, and a ratchet wheel fixed by the member. A first linear direction movement of a pawl member that engages with a mobile member of a solenoid is guided by a guide member fixed by the caliper. The pawl member is continuously pressed in a release direction by an elastic member. The interlocking force in an interlocking direction, imparted by mobile member of the solenoid mobile member to the pawl member, and the release force in the release direction, which is imparted by the elastic member to the pawl member oppose each other, and the interlocking force is larger than the release force. The pawl member and the mobile member move linearly together in one of the interlocking direction and the release direction.

This electric braking device uses drive torque of an electric motor to push a friction member against a rotating member secured to a vehicle wheel and produce braking torque in the vehicle wheel. This device comprises a body power source for electric motor power supply secured to a body of the vehicle, and a vehicle wheel power source for electric motor power supply secured to the vehicle wheel. The body power source supplies power to the vehicle wheel power source via a first electric path, and the vehicle wheel power source supplies power to the electric motor via a second electric path. When braking torque is produced in the vehicle wheel, the electric motor is normally driven using the vehicle wheel power source. An electric braking device is thereby provided in which a power line electrically connecting the body side and the vehicle wheel side bends readily.

A vehicle brake control device includes an electric motor controlled based on a target energization amount calculated based on an operation amount (Bpa) of a braking operation member. Based on the operation amount (Bpa), it is determined whether or not an inertia compensation control for compensating for the influence of the inertia of a brake actuator is necessary. When the inertia compensation control is determined to be necessary, an inertia compensation energization amount for compensating for the influence of the inertia of the brake actuator is calculated based on a time-series pattern set in advance based on the maximum response of the brake actuator. Based on the inertia compensation energization amount, the target energization amount is calculated. The vehicle brake control device is thus able to generate a braking torque that appropriately compensates for the influence of the inertia of the entire device including the inertia of the electric motor.

A vehicle brake control device generates rear wheel braking torque by an electric motor by pressing a friction member against a rotating member rotating together with the rear wheel, reduces rear wheel braking torque by controlling the electric motor based on a target energization amount calculated from a slip state quantity of the rear wheel, and rapidly stops electric motor rotation motion based on an adjusted target energization amount calculated from the target energization amount and a slip state quantity of a front wheel.

The electric braking device is provided with: a pressing member, which has a thread portion with either an internal thread or an external thread and which applies a pressing force on a frictional member; a shaft member, which is rotated by an electric motor and is threadedly engaged with the thread portion; a first spherical surface member, which is separated from the shaft member, being capable of rotating relative to the shaft member around the axis of rotation of the shaft member, and the end surface of which is a spherical surface; and a second spherical surface member, which is in sliding contact with the spherical surface of the first spherical surface member, receives the reaction force of the pressing force, and is restrained from rotating with respect to the axis of rotation of the shaft member.

Electric vehicle braking device

A mount member is fixed to a support member by first and second fastening members, and a caliper is mounted to the mount member by first and second guide members. A motor axis of an electric motor and an axis of a shaft member configured to press a pressing member are different from each other. The electric motor is fixed to the caliper. When viewed from an axial direction of the first guide member, the motor axis is positioned inside a fastening quadrangle having four corners corresponding to positions of respective axes of, and is perpendicular to the axis, and the motor axis is orthogonal to a plane of the fastening quadrangle. As a result, there may be provided a vehicle electric braking device in which an axial direction dimension may be reduced to suppress an amplitude caused by vibration, and components sensitive to vibration influence are appropriately arranged.

Vehicle electric braking device

Based on a difference (&#x394;Fb) between a target value (Fbt) and an actual value (Fba) of a friction member force for pressing a brake disc, a feedback energization amount (Ipt) is calculated using a proportional gain smaller than an ultimate sensitivity gain. If &#x394;Fb falls within a fluctuation range of torque ripple, a first compensation energization amount (Ibt) is calculated using a proportional gain larger than the ultimate sensitivity gain, and if &#x394;Fb falls outside the fluctuation range, the first compensation energization amount (Ibt) is calculated to be constant. A second compensation energization amount (Ift) is calculated based on a calculation characteristic that is preset based on a torque fluctuation over a predetermined range of an electric motor position and based on an actual position of the electric motor. An indication energization amount calculated according to Fbt is adjusted by Ipt, Ibt, and Ift to calculate a target energization amount.

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Nagoya, Japan

Yoshiyuki Yasui