JPH04238768A - Brake device for automobile - Google Patents

Abstract

PURPOSE:To increase the degree of freedom in the layout of an engine or the like in an engine room, and provide an automotive brake device having the capability of properly selecting the set position of a brake pedal. CONSTITUTION:In a hydraulic automotive brake device equipped with a master bag 4 and a master cylinder 3, masterbag 4 and master cylinder 3 are connected to the body of an engine 2, and a brake pedal 8, the masterbag 4 and the master cylinder 3 are connected to one another via a flexible transmission member 7, thereby transmitting the operation of the brake pedal 8 to both of the masterbag 4 and master cylinder 3.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braking system for an automobile equipped with a master back and a master cylinder.

0002

[Prior Art] Generally, in a hydraulic braking system that is often used as a braking system for automobiles, when the brake pedal is depressed, the intake pressure (negative pressure) of the engine introduced into the master back is used to High oil pressure is generated in the master cylinder, which operates the pistons in the wheel cylinders and brakes the front and rear wheels.

Conventionally, in the above-mentioned hydraulic braking system for automobiles, as shown in the plan view of FIG. 3 and the side view of FIG.
, 1. A power unit consisting of an engine 2 and a transmission is disposed between the engine 2 and the transmission, and a dash panel 90 is provided behind the power unit to partition the engine room and the passenger compartment. A master back 40 and a reservoir tank 50 connected to the intake system 20 of No. 2 by a flexible vacuum pipe 110 are integrally formed, and the dash panel 9
The master cylinder 30, master back 40, and reservoir tank 50 are fixed to the 0, and the master cylinder 30, master back 40, and brake pedal 8 are connected via a highly rigid connecting member 70. It was fixed to the vehicle body (for example, see Japanese Patent Laid-Open No. 59-48254).

0004

However, in the conventional automobile braking system described above, the master cylinder and master back are fixed to the vehicle body and connected to the brake pedal via a highly rigid connecting member. The relationship between the position of the brake pedal and the position where the master cylinder and master bag are fixed is limited, making it difficult to properly select the installation position of the brake pedal, or the installation of the master cylinder and master bag. Once the position has been determined, the layout of the engine and the like in the engine room is limited, such as having to ensure a distance between the engine and the dashboard, resulting in a problem in that the degree of freedom in layout is reduced.

SUMMARY OF THE INVENTION An object of the present invention is to provide a braking device for a motor vehicle that improves the degree of freedom in the layout of the engine and the like in an engine room, and also allows the installation position of a brake pedal to be appropriately selected.

[0006]

[Means for Solving the Problems] The braking device for an automobile of the present invention is a hydraulic braking device for an automobile equipped with a master back and a master cylinder, in which the master back and the master cylinder are connected to an engine body. In addition, the brake pedal, the master back and the master cylinder are connected via a flexible transmission member, and the operation of the brake pedal is transmitted to the master back and the master cylinder. Since the relative position with respect to the brake pedal is not fixed, the layout of the brake pedal can be optimized, and the degree of freedom in layout within the engine room is increased.

[0007]

[Embodiment] FIG. 1 is a plan layout diagram showing one embodiment of the present invention.
FIG. 2 is also a side layout view, in which a power unit consisting of an engine 2 and a transmission is arranged between a pair of left and right front frames 1, 1 extending toward the front of the vehicle body, and a dash panel 12 is provided behind the power unit to form an engine compartment. It is separated from the passenger compartment.

A flexible vacuum pipe 1 is connected to the master cylinder 3 of the braking device and the intake system 20 of the engine 2.
A master back 4 and a reservoir tank 5 are connected to each other by bolts 9 and connected to each other at the rear of the master cylinder 3, and are integrally formed with each other.
A. 10A, the master cylinder 3 is attached to the first bracket 9, and the master back 4 is attached to the second bracket 10.

The second bracket 10 has a mounting surface 101 for attaching the engine 2 to the head cover 21 and a master back 4.
The mounting surface 102 of the master back 4 is twisted at a substantially right angle, and the support bracket 10 is attached to the end of the mounting surface 102 of the master back 4.
The mounting surface 101 is fixed to the head cover 21 by bolts 10A, the master back 4 is fixed to the mounting surface 102, and the support bracket 103 is fixed to the head cover 21 by a shaft 60. A letter-shaped link 6 is rotatably supported, and one end 61 of the link 6 is connected to the rear end of the drive rod 4A of the master bag 4.
The other end of the link 6 is a flexible transmission member 7 such as a wire.
The transmission member 7 extends into the vehicle interior through the dash panel 12, and the other end of the transmission member 7 is connected to a brake pedal 8.

According to this configuration, the master cylinder, the master back and the reservoir tank are integrally formed and fixed to the head cover of the engine, and the master cylinder and the master back are connected to the brake pedal via a flexible transmission member. By connecting the brake pedal, the position of the brake pedal relative to the master cylinder and master bag can be determined without restrictions, and the layout of the brake pedal can be appropriately determined based on operability. The engine can be placed closer to the dashboard, allowing for greater flexibility in layout.

[0011]

[Effects of the Invention] The automobile braking system of the present invention has a master cylinder and a master back fixed to the engine, and the master cylinder and master back are connected to the brake pedal via a flexible transmission member.
This means that the position of the brake pedal relative to the master cylinder and master back can be determined without restrictions, allowing the layout of the brake pedal to be determined appropriately based on operability, and also allowing the engine in the engine room to be displayed on the dashboard. This increases the degree of freedom in layout, such as being able to place them close together.

[Brief explanation of the drawing]

FIG. 1 is a plan layout diagram of an embodiment of the present invention.

FIG. 2 is a side layout diagram of an embodiment of the present invention.

FIG. 3 is a plan layout diagram of a conventional braking device.

FIG. 4 is a side layout view of a conventional braking device.

[Explanation of symbols]

2 Engine 3 Master cylinder 4 Master back 6 Link 7. Flexible transmission member 8 Brake pedal 9 First bracket 10 Second bracket 12 Dash panel

Claims (1)

[Claims] 1. A braking system for an automobile equipped with a master back and a master cylinder, which connects the master back and the master cylinder to an engine body and flexibly transmits a brake pedal, the master back and the master cylinder. A braking device for an automobile, characterized in that the braking device is connected via a member.