JPS6327004Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a brake booster mounting structure, and more particularly to a brake booster mounting structure improved in order to improve mounting workability.

In small cars, there is little space in the engine room, so a brake booster (boosting device) to drive the master cylinder in conjunction with the brake pedal is unavoidably installed between the dash panel and the cowl inner panel. space,
That is, it is arranged in the space under the passenger's feet where pedals are attached.

Incidentally, the brake pedal and the clutch pedal are supported by a pedal bracket fixed to a dash panel or a cowl inner panel. On the other hand, since the brake booster is linked to the brake pedal, it is recommended that the brake booster be installed not on the dash panel, but on the pedal bracket that supports the brake pedal, from the viewpoint of improving the workability of assembling the pedal area. desired. In this case, if a bracket for supporting the brake booster (booster bracket) is simply attached to the pedal bracket, this booster bracket or the brake booster supported by it will be supported in a cantilevered manner with respect to the pedal bracket. This leaves a problem with support rigidity.

The present invention solves the above problems and improves the support rigidity while maintaining ease of assembly by attaching the booster bracket to the pedal bracket or a member integrally connected thereto. The purpose of the present invention is to provide a mounting structure for a brake booster that is flexible.

In order to achieve this objective, the present invention takes the following technical measures. That is, a pedal bracket that is in rigid contact with the vehicle body is provided with a shaft that projects laterally outward in a fixed manner on the side surface, while a booster bracket that supports the brake booster is provided with a boss portion that is loosely fitted to the shaft in front of the booster bracket that supports the brake booster. and a branch piece that abuts the outer side surface of the pedal bracket at a location a predetermined distance apart from the axis, and on the side of the pedal bracket,
The boss portion is loosely fitted to the shaft in the axial direction, and the support piece is bolted to the outer side surface of the pedal bracket.

This has the following effect. That is, when attaching the booster bracket to the pedal bracket, first fit the boss portion of the support arm onto the shaft supported by the pedal bracket, and then rotate the entire bracket around the shaft while tightening the bolt of the support arm. It is only necessary to align the holes with the bolt holes of the pedal bracket, insert the bolts into these bolt holes, and screw them onto the nuts, making the installation work extremely easy. In other words, the support arm can be supported by the pedal bracket via the shaft by simply fitting the boss part onto the shaft without requiring any special parts or tools such as screws, while the pedal bracket of the support arm Fixing to the booster bracket is extremely easy because the bolt holes can be aligned by swinging the booster bracket around the boss fitted onto the shaft. In addition, since the booster bracket is supported by the pedal bracket at two places: the support arm extending to the front and the support piece provided on one side, the support rigidity is sufficient, and the brake booster attached to this booster bracket is protected from vibrations. It doesn't wobble or anything. Furthermore, since the brake booster is installed on the outer side surface of the pedal bracket, there are no obstructions such as a steering shaft, and the space necessary for installing the brake booster can be secured regardless of the type or size of the vehicle.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. The illustrated example shows an example in which the present invention is applied to a left-hand drive vehicle, and the brake booster is arranged on the opposite side of the brake pedal with respect to the pedal bracket. This is because the brake booster, which occupies a large space, is placed as close to the side corner of the vehicle as possible, and the limited interior space is utilized as effectively as possible.

Reference numeral 1 denotes a pedal bracket having a substantially U-shaped cross section that opens downward.As shown in FIGS. 2 and 3, the front end 1a is connected to the dash panel 2, and the rear top surface 1b is connected to the cowl inner panel 3. They are attached to the vehicle by bolting them to the respective bolts.
A cylindrical shaft 5 that passes through the left and right walls 4, 4 laterally is fixed to a lower front portion of the pedal bracket 1 by welding or the like, and a support shaft 6 rotatably passes through the cylindrical shaft 5. It is inserted and retained. The base of a brake pedal 7 is fixed to the right end of the support shaft 6 by welding or the like. Thereby, the brake pedal 7 becomes rotatable around the support shaft 6. In addition, a brake booster 8 (to be described later) is attached to the left end of the support shaft 6.
arm 10 for driving the bush rod 9 of
is fixed. Thereby, the movement of the brake pedal 7 is transmitted to the brake booster 8 located on the opposite side of the pedal bracket 1.

Reference numeral 11 denotes a clutch pedal, and a portion of the cylinder shaft 5 that projects to the left from the pedal bracket 1 is provided with a clutch pedal.
It is rotatably supported by loosely fitting the boss portion 12 at one end thereof.

The booster bracket 13 includes a substantially vertical main part 13a having a hole 14 in the center into which the front barrel 8a of the brake booster 8 is to be fitted, and one end of the main part 13a, that is, the right end in the illustrated example. A support piece 13b extends rearward along the left side surface of the pedal bracket 1, and a support arm 1 extends forward from the lower end of the main portion 13a and has a boss 15 at its tip.
3c. The inner diameter of the boss portion 15 is set to a size that allows it to fit loosely around the outer periphery of the cylindrical shaft 5. Further, the support piece 13b is provided with a bolt hole (not shown) that can match a screw hole or a bolt hole (not shown) formed in the side surface of the pedal bracket 1.

Thus, the booster bracket 13 can be installed by fitting the boss portion 12 of the clutch pedal 11 into the left protruding portion of the cylinder shaft 5, and then attaching the support arm 13c.
Then, while rotating the entire booster bracket 13 around the boss part 15, insert the bolt insertion hole (not shown) in the support piece 13b and the hole drilled in the side surface of the pedal bracket 1 (not shown in the figure). This can be easily done by simply aligning the bolts 16 (not shown), inserting the bolts 16 through these holes, and screwing them into the nuts 17 held on the back side of the pedal bracket 1. This nut 17 may be welded in advance at a predetermined position, or a screw hole may be drilled in the pedal bracket 1.
Further, the brake booster 8 may be attached to the booster bracket 13 in advance and then the booster bracket 13 may be attached to the pedal bracket 1 as described above, or the brake booster 8 may be attached first to the booster bracket 13 and then attached to this. You can.

After the booster bracket 13 is attached as described above, an arm 10 for driving the push rod 9 of the brake booster 8 is fixed to the left end of the support shaft 6 which protrudes further to the left from the left end of the cylinder shaft 5. The tip of this arm 10 and the clevis 18 at the front end of the push rod 9 are pin-connected to complete the connection from the brake pedal 7 to the brake booster 8.

In addition, 19 in the figure is integrally attached to the rear part of the brake booster 8, and the brake tube 2 is connected to the brake pedal 7 or the brake booster 8.
A master cylinder 21 is used to supply pressure hydraulic oil to the brake booster 8, and a vacuum hose 21 is used to apply vacuum pressure to the brake booster 8.

In addition, although the example in which the present invention is applied to a left-hand drive vehicle has been described above, it goes without saying that the present invention can be applied to a right-hand drive vehicle. In this case, the support shaft 6 extends further to the right from the right side surface of the pedal bracket 1, and the support piece 13b of the booster bracket 13 extends from the left end of the main portion 13a, contrary to the illustrated example, so that the booster bracket 13 can be moved further to the right than the illustrated example. The pedal bracket 1 may be mounted so as to be approximately symmetrical with respect to the front-rear axis of the pedal bracket 1.

As explained above, according to the brake booster mounting structure according to the present invention, the brake booster can be mounted to the pedal bracket extremely easily, and the support rigidity of the brake booster to the pedal bracket is sufficient. . Furthermore, since the brake booster is attached to the outer side surface of the pedal bracket, the necessary space for attaching the brake booster can be secured regardless of the type and size of the vehicle.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and Fig. 1 is an overall perspective view showing a unit in which a brake booster is attached to a pedal bracket, and Fig. 2 is an overall perspective view showing the unit in which a brake booster is attached to a pedal bracket. FIG. 3 is a partially sectional plan view of FIG. 2. 1... Pedal bracket, 5, 6... Shaft (cylindrical shaft or support shaft), 8... Brake booster, 13... Booster bracket, 13b... Support piece, 13c... Support arm, 1
5...Boss.

Claims (1)

[Scope of utility model registration request] A shaft that protrudes laterally outward is fixedly provided on the side surface of the pedal bracket that is in rigid contact with the vehicle body, while a support that has a boss portion that is loosely fitted to the shaft at the front of the booster bracket that supports the brake booster is provided. an arm and a branch piece that abuts the outer side surface of the pedal bracket at a predetermined distance from the shaft; A brake booster mounting structure characterized in that the brake booster is fitted into the pedal bracket and the branch piece is bolted to the outer side surface of the pedal bracket.