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Braking device for vehicle

A brake device and vehicle technology, which is applied in the direction of brake transmission device, brake action activation device, hydraulic brake transmission device, etc., can solve the problems of complex connection system and rising manufacturing cost, and achieve simplified oil pressure piping and reduced The effect of manufacturing costs

Inactive Publication Date: 2013-02-13
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the connection system for connecting hydraulic piping such as the accumulator, the master cylinder, and the stroke simulator becomes complicated, leading to an increase in manufacturing cost.

Method used

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  • Braking device for vehicle
  • Braking device for vehicle

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Experimental program
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Effect test

Embodiment 1

[0067] FIG. 1 is a schematic configuration diagram showing a vehicle brake device according to Embodiment 1 of the present invention.

[0068]In the vehicle braking device of the first embodiment, as shown in FIG. 1 , in the cylinder 12, the input piston 13 and the pressurizing piston 14 as the driving piston are freely movably supported in the axial direction to constitute the master cylinder 11. . The cylinder 12 is fixed with a cover member 15 by screwing (or press-fitting) at the top end, and a support member 16 is fixed at the base end by screwing (or press-fitting), so that the top end is closed. On the other hand, the cylindrical shape with the base end open, inside the cylinder 12, the input piston 13 and the pressurizing piston 14 are arranged in series on the same axis and are freely movably supported in the axial direction.

[0069] In addition, the upper end portion of the brake pedal 17 as an operating member is rotatably supported on the mounting bracket of the ...

Embodiment 2

[0103] Fig. 2 is a schematic configuration diagram showing a vehicle brake device according to a second embodiment of the present invention. Components having the same functions as those described in the above-mentioned embodiments are denoted by the same reference numerals, and redundant descriptions are omitted.

[0104] In the vehicle brake device of the second embodiment, as shown in FIG. 2 , an input piston 13 and a pressurizing piston 14 are movably supported in a cylinder 12 to form a master cylinder 11 . A cover member 15 is fixed to the top end of the cylinder 12, and a support member 16 is fixed to the base end thereof. Inside the cylinder 12, the input piston 13 and the pressurizing piston 14 are arranged coaxially in series. Furthermore, an operation rod 22 of the brake pedal 17 is connected to the input piston 13 .

[0105] The movement stroke of the input piston 13 is limited by the abutment of the flange portion 23 against the first stepped portion 12c of the c...

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PUM

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Abstract

In a braking apparatus for a vehicle, an input piston and a pressurizing piston are movably supported inside a cylinder, thereby sectioning a first pressure chamber, a second pressure chamber, and a third pressure chamber, the second pressure chamber and the third pressure chamber communicating with each other through a communicating path. An ECU causes a control hydraulic-pressure that is adjusted by first and second liner valves to act on the second pressure chamber from the third pressure chamber, thereby assisting the pressurizing piston to enable to output control hydraulic-pressure from the first pressure chamber. A counterforce chamber whose volume decreases as the input piston moves forward is provided inside a cylinder, and a counterforce giving mechanism that can give an operation counterforce to a brake pedal through the input piston by deforming corresponding to decrease of the volume of the counterforce chamber is provided inside the input piston.

Description

technical field [0001] The present invention relates to a vehicle braking device that electronically controls braking force applied to a vehicle in response to a passenger's braking operation. Background technique [0002] As a braking device of a vehicle, the braking force applied to the braking device in response to the brake operation amount (or operating force) input from the brake pedal, that is, the brake oil pressure supplied to the wheel cylinders that drive the braking device is known. An electronically controlled braking device that performs electrical control. As such a brake device, there is, for example, a brake device described in Patent Document 1 below. [0003] The brake control system for vehicles described in this patent document 1 is as follows: when the driver operates the brake pedal, the master cylinder generates oil pressure corresponding to the amount of operation, and a part of the operating oil flows into the stroke simulator (stroke simulator). ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T13/12B60T8/17B60T11/18
CPCB60T13/142B60T7/042B60T13/686B60T8/4077B60T13/145
Inventor 矶野宏
Owner TOYOTA JIDOSHA KK
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