JPH06144206A - Pedal device for automobile - Google Patents

Abstract

PURPOSE:To obtain a compact pedal device in reducing protrusion of a brake pedal toward a driver by disposing the pedal alongside a dust boost of a booster push rod. CONSTITUTION:In a pedal device 1, a pedal 7 is supported at its one end on a bracket fixed on a flange 4 at an open end of a front housing 3 of a brake booster 2, and also supported at its middle position on a push rod 6 of the booster 2. The push rod 6 of the booster 2 and the pedal 7 are mutually connected through an L-shaped connecting member 21. One arm of the L-shaped connecting member 21 is fixed on its end to the push rod 6 by a bolt 22. The other arm 23 then extends forward alongside a dust boost 11 of the booster 2. The pedal 7 is fixed at its bend portion 19 to the other member 23 of the L-shaped connecting member 21 by use of a crevice piece 24. Accordingly, protrusion of the brake pedal 7 toward a driver is suppressed as far as possible, so that a compact pedal device 1 is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile pedal device,
For example, the present invention relates to an automobile pedal device useful for integrating a pedal and a booster in a lightweight and compact manner.

[0002]

2. Description of the Related Art There have been attempts to integrate a brake booster and a brake pedal in advance, that is, to assemble them before mounting the brake booster on a vehicle body. This attempt helps to simplify the vehicle assembly line.

One of the attempts was made by British Published Patent No. 2,23.
No. 5,263. In this example, a brake master cylinder is supported by a front housing of a brake booster, and a rear housing of the brake booster is fixed to a dashboard of a car.A bracket is fixed to the rear housing, and a brake pedal is supported on the bracket. In more detail, the support point of the bracket and the brake pedal is the center of rotation of the brake pedal, a damper fixed to the bracket is provided at one end of the brake pedal, and the appropriate position of the brake pedal is pushed by the brake booster. The structure is such that it is fixed directly to one end of the rod.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
Although the brake booster and the brake pedal are unitized, the brake pedal may be pivotally supported by the bracket, so that the brake pedal extends considerably toward the occupant side of the dashboard, resulting in a drawback of increasing the size. Therefore,
An object of the present invention is to solve the above-mentioned problems of the conventional technology.

[0005]

In order to solve the above-mentioned problems, the present invention basically uses means for arranging a pedal on the side portion of a dust boot for a push rod of a booster.

Specifically, the present invention comprises a flange provided at an open end of the front housing of the booster so as to extend radially outward, and a bracket fixed to the flange and pivotally supporting one end of the pedal. The booster has a member that connects the push rod and the push rod that passes through the side of the push rod dust boot, and the position of the clevis pin that connects the pedal and the connecting member is shifted outward from the axial center of the push rod. The present invention provides a pedal device for an automobile.

[0007]

Since the pedal is passed through the side portion of the dust boot for the push rod of the booster, there is no protrusion to the occupant side of the pedal, and the pedal can be made compact. The pedal effort to the pedal is efficiently transmitted to the push rod through the connecting member, and there is no loss of the pedal effort.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A pedal device 1 for an automobile includes a brake booster 2, a bracket 5 fixed to a flange 4 at an open end of a front housing 3 of the brake booster 2, one end of the bracket 5 and an intermediate portion of a brake. The booster 2 has a pedal 7 supported by a push rod 6 of the booster 2. The pedal device 1 is preassembled and unitized. still,
The master cylinder 8 may be fixed to the brake booster 2 in advance. That is, the master cylinder 8 may be a unitized component.

The flange 4 at the open end of the front housing 3 of the master cylinder 2 has an outwardly projecting shape in the radial direction, and the rear housing 10 supporting the edge of the diaphragm 9 is located in front of this flange 4. A cylindrical dust boot 11 covering the push rod 16 extends rearward from the central portion of the rear housing 10. The rear housing 10 is fixed to the front housing 3 by inserting a plurality of spaced apart projection pieces 12 in the rear portion of the front housing 3 into the holes 13 of the front housing 3 and then press-molding them.

The bracket 5 is composed of a three-legged portion 15 fixed to the flange 4 of the brake booster 2 by a bolt 14, and a main body portion 16 extending rearward of the central portion in a U-shaped cross section. The bracket 5 is fixed to the brake booster 2 by fastening the bolt 14 to the flange 4 at the upper center of the rear surface of the brake booster 2 via the leg 15 of the bracket 5. The bolt 17 is penetrated between the opposing walls of the main body 16,
The sleeve 18 is inserted through the bolt 17 between the opposing walls. One end of the brake pedal 7 is fixed to the outer peripheral surface of the sleeve 18, and the brake pedal 7 is fixed to the sleeve 1.
It is possible to swing back and forth around the bolt 17 together with 8.

As shown in FIG. 2, the brake pedal 7 is arranged on the side of the cylindrical dust boot 11 of the brake booster 2 so as to escape the dust boot 11.
Then, the brake booster 2 is returned to a vertical plane passing through the axis thereof. That is, the brake pedal 7 has a bent portion 19 that escapes the dust boot 11, that is, avoids interference with the dust boot 11. The bracket 5 has a rubber stopper 20, and regulates the rearward position of the brake pedal 7.

Push rod 6 of brake booster 2
And the brake pedal 7 are connected via an L-shaped connecting member 21. One end of one piece of the L-shaped connecting member 21 is fixed to the push rod 6 with a bolt 22, and the other piece 23 is extended forward along the side portion of the dust boot 11 of the brake booster 2. The bent portion 19 of the brake pedal 7 is fixed to the other piece 23 of the L-shaped connecting member 21 by using the clevis pin 24. As a result, the sleeve 18 of the brake pedal 7
Swinging back and forth around the center causes the push rod 6 of the brake booster 2 to reciprocate via the L-shaped connecting member 21.

In the illustrated example, the brake pedal 7 is extended to one side of the dust boot 11, and the sleeve 1 of the bracket 5 is extended.
8 supported, but as shown by the phantom line, the dust boot 1
The brake pedal 7 may be extended to both sides of 1 to enable both ends of the pedal to be held.

The attachment of the bracket 5 to the flange 4 of the front housing 3 of the brake booster 2 is firm because the front housing 3 is a strong member, and the operation of stepping on the brake pedal 7 and the brake booster 2 is performed. The bracket 5 sufficiently withstands the reaction force via the push rod 6, and the mounting portion between the flange 4 and the leg portion 15 of the bracket is not deformed. This flange 4 is
It is also used to fix the brake booster 2 to the dashboard 25.

The connection between the brake pedal 7 and the push rod 6 of the brake booster 2 is brought close to the brake booster 2 side, that is, the dashboard 25 side by using the L-shaped connecting member 21, and the brake pedal 7 is extended to the passenger side. Suppress. This is effective in making the pedal system 1 compact.

[0016]

[Effect] In the present invention, the clevis position of the brake pedal is displaced from the axis of the push rod of the brake booster,
Since it is eccentric to the side and the brake pedal is brought close to the brake booster, the brake pedal device can be downsized.

[Brief description of drawings]

FIG. 1 is a front view of an example of the present invention.

FIG. 2 is a side view of an example of the present invention.

[Explanation of symbols]

 2 Brake booster 3 Front housing 4 Flange 5 Bracket 6 Push rod 7 Brake pedal 8 Master cylinder 10 Rear housing 11 Dust boot 15 Legs 21 L-shaped connecting member 24 Clevis pin 25 Dashboard

Claims (2)

[Claims] 1. A flange provided at an open end of a front housing of the booster so as to extend radially outward, and a bracket fixed to the flange and pivotally supporting one end of a pedal.
The booster has a member that connects the push rod and the push rod that passes through the side of the push rod dust boot, and the position of the clevis pin that connects the pedal and the connecting member is shifted outward from the axial center of the push rod. Automotive pedal system. 2. The pedal system for an automobile according to claim 1, wherein the connecting member is L-shaped.