JPH0611279Y2 - Brake booster mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a mounting device for a brake booster used in an automobile.

(Prior Art) A conventional mounting device for a brake booster 101 is shown in a longitudinal side view in FIG. 3 and an exploded perspective view in FIG. 4, respectively.

The booster 101 is tightened together with the pedal bracket 109 with the mounting bolt 111 and the nut 113 to the dash panel lower 107 which reinforces the mounting dash panel 103 by joining the mounting dash panel 103 to the mounting peripheral part 105. A dash insulator 115 exists inside the vehicle compartment.

That is, a spacer 119 having a hollow cylindrical portion 117 into which the mounting bolt 111 can be inserted is projected from the reinforcement dash panel 103, and a spacer fitting hole 1 into which the spacer 119 can be inserted into the dash insulator 115.
21 is provided.

Therefore, in the assembled state, the reinforcement dash panel 103 is attached to the mounting peripheral portion 105 of the dash panel lower 107.
And the spacer 119 of the reinforcement dash panel 103 is inserted through the spacer fitting hole 21 and further protrudes from the dash insulator 115. The mounting seat 123 of the pedal bracket 109 is joined to the rear end surface of the spacer 119, and the mounting bolt 111 of the booster 101 is attached.
Is inserted into the bolt hole 125 of the dash panel lower 107, the hollow cylindrical portion 117 of the spacer 119, and the bolt hole 127 of the mounting seat 123, and the nut 113 is attached to the mounting bolt 111.
Be screwed into. Therefore, the booster 101 is fixed to the dash panel lower 107, and at the same time, the pedal bracket 109 is fixed to the reinforcement dash panel 1.
It will be fixed to the dash panel lower 107 via 03.

Valve operating rod 129 of booster 101
Is connected to a brake pedal (not shown) pivotally supported by the pedal bracket 109.

This similar structure is disclosed, for example, in Japanese Utility Model Laid-Open No. 59-190663.

(Problems to be Solved by the Invention) In the conventional mounting device, (a) the sound of the engine room 131 easily leaks into the vehicle compartment 133.

That is, the sound in the engine room 131 passes through the dash insulator 115 from the contact surface between the dash panel upper 133 and the dash panel lower 107, as illustrated by the arrow A in FIG. It passes through a gap between the vehicle seat 119 and the dash insulator 115 of the pedal bracket 109 and enters into the vehicle compartment 133.

Further, as illustrated by the arrow B, the boot 135 of the booster 101 and the boot insertion hole 13 of the dash panel lower 107 are illustrated.
After that, the vehicle enters the vehicle interior 133 through a route similar to the above-mentioned arrow line.

(b) The mounting rigidity with the pedal bracket 109 is insufficient.

That is, the mounting seat 123 of the pedal bracket 109 is
As is clear from the figure, the hollow tubular portion 117 is joined to the spacer 119 as a main component, but the joining area is small, and there is a risk that it will fall over when it is tightened.

(c) Spacer fitting hole 1 of the dash insulator 115
Since 21 has a shape with many curved lines in order to suppress the leakage of sound in the engine room 131, the assembly work is troublesome.

This invention solves the problems of the conventional structure, reduces the leakage of noise into the passenger compartment, improves the mounting rigidity of the pedal bracket, and simplifies the fitting hole of the dash insulator. The aim is to propose a possible brake booster mounting device.

[Structure of the Invention] (Means for Solving the Problem) According to the structure of the present invention for solving the above-mentioned problems, a reinforcement dash panel is attached to the interior side of the dash panel to reinforce the reinforcement dash panel. To form a pedal bracket mounting surface by bulging toward the vehicle interior side, and providing a spacer between the dash panel and the pedal bracket mounting surface portion of the reinforcement dash panel to install a brake booster in the engine room of the tash panel. And the pedal bracket of the brake pedal is arranged on the mounting surface, and both are fastened together on the mounting surface, and the reinforcement dash has the bulging portion of the panel and the end edge portion of the dash insulator overlapped with each other. And

(Function) The bulging part formed on the reinforcement dash panel is overlapped with the edge of the dash insulator, so the sound of the engine room is blocked by the bulging part of the reinforcement dash panel and the overlapping part of the dash insulator. As a result, the sound leakage into the passenger compartment was suppressed.

The bulging portion formed on the reinforcement dash panel is in contact with the mounting seat of the pedal bracket, and the bulging portion is reinforced by the spacer to be attached to the dash panel. It will be fixed to.

The fitting insertion hole of the dash insulator may be formed in conformity with the bulging portion, and simplification can be achieved.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a vertical sectional side view of a mounting device for a booster, and FIG. 2 shows an exploded perspective view thereof.

The reinforcement dash panel 3 is a dash panel 5
The peripheral portion 9 is welded to the mounting peripheral portion 7 of
A central portion of the peripheral portion 9 is bulged toward the vehicle interior by press molding or the like to form a bulged portion 15 with which the mounting seat 13 of the pedal bracket 11 can be brought into contact.

The bulging portion 15 in the illustrated example is composed of a mounting surface 17 formed flat in a large area in the central portion, and a step portion 19 around the mounting surface 17 having a slightly smaller protrusion amount than this.

The dash insulator 21 is provided with a fitting insertion hole 23 into which the mounting surface 17 of the reinforcement dash panel 3 can be fitted. The fitting insertion hole 23 is formed in such a manner that the pad 24 portion of the dash insulator 21 is formed in conformity with the peripheral surface circular shape of the bulging portion 15 to simplify the shape. Insertion hole 2
In the outer skin 27 portion of No. 3, an edge portion 25 that overlaps the step portion 19 is formed.

In order to penetrate the boot 29 of the booster 1, boot holes 31, 33, and 34 are provided in the dash panel 5, the reinforcement dash panel 3, and the pedal bracket 11, respectively, and the mounting bolt 35 of the booster 1 is inserted therethrough. for,
Bolt holes 37, 39, and 41 are provided in the dash panel 5, the reinforcement dash panel 3, and the pedal bracket 21, respectively.

In the mounted state, between the dash panel 5 and the bulging portion 15,
A hollow cylindrical spacer 43 is provided.

Clip holes 47 are provided in the reinforcement dash panel 3 and the dash insulator 21.

Therefore, in the assembled state, the peripheral portion 9 of the reinforcement dash panel 3 is welded to the mounting peripheral portion 7 of the dash panel 5, and the spacer is provided between the dash panel 5 and the bulging portion 15 of the reinforcement dash panel 3. The mounting seat 13 of the pedal bracket 11 is crimped to the mounting surface 17 by tightening a nut 49 screwed into the mounting bolt 35 of the booster 1 inserted through the spacer 43. As a result, the pedal bracket 11 is fixed to the dash panel 5 via the reinforcement dash panel 3 and the spacer 43, and the boot 29 is fixed to the boot hole 3.
The valve operating rod 49 is inserted into the pedal bracket 11, and the valve operating rod 49 is located at a predetermined position of the pedal bracket 11.

The end edge portion 25 of the dash insulator 21 is overlapped with the step portion 19 of the reinforcement dash panel 3, and the clip 51 inserted into the clip holes 45 and 47 is caulked, whereby the end edge of the dash insulator 21 is attached to the step portion 19. The part 25 is fixed.

The mounting seat 13 of the pedal bracket 11 is joined to a wide and flat mounting surface 17 over substantially the entire surface, and the spacer 4
Since the bulging portion 15 is reinforced by the attachment to the dash panel 5, the attachment rigidity of the pedal bracket 11 to the reinforcement dash panel 3 is enhanced.

The sound in the engine room 53 is generated by the dash panel upper 55 and the dash panel 5 as illustrated by an arrow C in FIG.
Although it slightly penetrates the dash insulator 21 from the contact surface with, the sound is blocked by the overlapping of the end edge portion 25 of the dash insulator 21 and the step portion 19 of the reinforcement dash panel 3, and the vehicle compartment 57 is provided in the engine room. The sound of 53 became difficult to penetrate. In this case, the pad can be left on the edge portion 25, and the sound insulation performance can be further improved.

As in the illustrated example, the bulging portion 15 is provided with a step portion 19 for superposing the end edge portion 25 separately from the mounting surface 17, which is convenient for this superposition. 1
9 is not provided, the mounting seat 13 of the pedal bracket 11 is made slightly smaller by the mounting portion 17, and the mounting portion 17
The rear end portion 25 of the dash insulator 21 may be overlapped with the peripheral portion of the.

The circumference of the bulging portion 15 is circular, and the pad 24 portion of the fitting insertion hole 23 of the dash insulator 21 is also circular.
Both can be easily brought into close contact with each other, and the sound insulation performance is improved also from this point. Further, at the time of assembly, the fitting insertion hole 23 of the dash insulator 21 can be easily and easily inserted into the bulging portion 15, and the workability of mounting is improved.

[Effect of the Invention] As apparent from the above, according to the configuration of the present invention,
Since the end edge of the dash insulator is overlapped with the bulging portion formed on the reinforcement dash panel, the sound in the engine room is blocked by the overlapping portion, and the sound leakage into the vehicle interior is suppressed. .

The bulging part formed on the reinforcement dash panel can be brought into contact with the mounting seat of the pedal bracket over a wide area, and the bulging part is reinforced by the spacer for mounting on the dash panel. Will be firmly fixed to the dash panel.

The fitting hole of the dash insulator can be simplified and the installation workability is improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing a mounting device of a brake booster according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, and FIG. 3 is a vertical sectional side view of a conventional structure. The figure is an exploded perspective view of FIG. 1 ... Booster 3 ... Reinforce dash panel 5 ... Dash panel, 9 ... Mounting peripheral part 11 ... Pedal bracket, 15 ... Projection part 17 ... Mounting surface, 21 ... Dash insulator 25 ... Edge, 43 ... Spacer

Claims (1)

[Scope of utility model registration request] 1. A reinforcement dash panel is joined to and reinforced on the vehicle interior side of the dash panel, and the reinforcement dash panel is bulged toward the vehicle interior side to form a pedal bracket mounting surface. A spacer between the pedal bracket mounting surface of the rain dash panel and the brake booster is located on the engine room side of the dash panel, and the pedal bracket of the brake pedal is located on the mounting surface. The device for mounting a brake booster is characterized in that the reinforcement dash is formed by overlapping the end edge portion of the dash insulator with the bulging portion of the panel.