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Vehicle braking device

A brake device and vehicle technology, applied in the direction of brake transmission device, brake action activation device, brake, etc., can solve the problems of increased number of components, increased cost, and large size

Active Publication Date: 2019-08-06
ADVICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the number of components increases, and along with this, problems such as increase in size and cost arise.

Method used

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  • Vehicle braking device
  • Vehicle braking device
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Experimental program
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Effect test

no. 1 approach

[0051] In this way, according to the first embodiment, even when any abnormality occurs in any one of the first drive circuit 61 and the second drive circuit 62, the three wheels W can be made to exhibit the same braking force as in the normal state. The wheels W exert a braking force based on the line pressure. Furthermore, according to the first embodiment, the power supply unit and the coil of the solenoid valve are not duplicated, but only the drive circuit is mainly added, so that the increase in the number of parts and the accompanying increase in size and cost can be suppressed. In other words, according to the first embodiment, while suppressing an increase in the number of parts, fail-safe performance at the time of an abnormality can be improved. According to the first embodiment, for example, existing structures can be utilized for the components of the actuator 5 .

[0052] In addition, the vehicle brake device 1 according to the first embodiment includes a first ...

no. 2 approach ＞

[0055] Compared with the first embodiment, the vehicle brake device 10 of the second embodiment is mainly different in that it includes a third control valve and a fourth control valve. Therefore, the different parts will be described. In the description of the second embodiment, the description of the first embodiment and the drawings can be referred to.

[0056] Such as Figure 4 As shown, the hydraulic flow path portion 53A of the second embodiment further includes a third control valve 523 and a fourth control valve 524 in addition to the configuration of the hydraulic flow path portion 53 of the first embodiment. The third control valve 523 is a solenoid valve (a normally open solenoid valve) that opens in a non-energized state and is arranged in series with the first control valve 518 in the first main passage 517 . The third control valve 523 can be said to be connected in series with the first control valve 518 . In the first main flow path 517 , the third control v...

no. 3 approach ＞

[0066] Compared with the first embodiment, the vehicle braking device of the third embodiment differs in the connection structure between the first control valve 518 and the second control valve 520 and the first drive circuit 61 and the second drive circuit 62 . Therefore, the different parts will be described. In the description of the third embodiment, the description of the first embodiment and the drawings can be referred to.

[0067] Such as Figure 5 As shown, the first control valve 518 and the second control valve 520 of the third embodiment are respectively connected to the first drive circuit 61 and the second drive circuit 61 and the second drive circuit 62 so as to be independently controllable. Circuit 62. The first drive circuit 61 is connected to the first control valve 518 via a wire 83 , and is connected to the second control valve 520 via a wire 84 . The second drive circuit 62 is connected to the first control valve 518 via a wire 85 and is connected to...

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Abstract

In the present invention, a hydraulic circuit (53) comprises: a first pressure-boosting flow path (501) that connects a first main flow path and a first wheel cylinder (41); a first pressure-boostingvalve (502) that is disposed in the first pressure-boosting flow path (501) and that opens in a non-energized state; a first pressure-reducing flow path (503) that connects the first wheel cylinder (41) and a reservoir (24); a first pressure-reducing valve (504) that is disposed in the first pressure-reducing flow path (503) and that closes in a non-energized state; a second pressure-boosting flowpath (505); a second pressure-boosting valve (506); a second pressure-reducing flow path (507); and a second pressure-reducing valve (508). A control unit (6) comprises: a first drive circuit (61) that controls the first pressure-reducing valve (504); and a second drive circuit (62) that is separate from the first drive circuit (61) and that controls the second pressure-reducing valve (508).

Description

technical field [0001] The present invention relates to a brake device for a vehicle. Background technique [0002] The vehicle brake device includes a plurality of solenoid valves for adjusting the hydraulic pressure of the wheel cylinders. For example, in the vehicle braking device described in Japanese Patent Application Laid-Open No. 2001-180469, the signal lines connecting a plurality of solenoid valves and the brake ECU are divided into two signal line groups and used in each of the signal line groups. Independent connectors, thereby increasing the reliability of the device. According to this configuration, even if a failure occurs in one of the connectors, it is possible to control the solenoid valve connected to the other connector (solenoid valves corresponding to the pair of wheels located at diagonal positions). In addition, this gazette discloses a technique in which power lines of two power supply devices are connected to each solenoid valve, and each solenoid...

Claims

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Application Information

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IPC IPC(8): B60T8/94B60T8/17B60T13/20
CPCB60T2270/403B60T13/686B60T17/221B60T13/146B60T7/042B60T13/167B60T13/58B60T8/94B60T2270/402B60T2270/413B60T8/17
Inventor 加藤领干安藤宏幸山口贵洋增田芳夫
Owner ADVICS CO LTD
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