JP2511988Y2 - Hydraulic clutch master-cylinder mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a mounting structure for a hydraulic clutch master cylinder.

[Prior art]

As shown in the arrow in FIG. 6, the conventional mounting structure of the hydraulic clutch master cylinder is such that the base flange 2 of the clutch master cylinder 1 is brought into contact with the dash panel 3 from the engine room A side and the push rod 5 is fitted through the through hole 4 to the vehicle. Protruding toward the room B side, while clutch pedal bracket 6
Is a dash insulator 7 including a felt 7a and a septum (skin) 7b bonded to the interior side of the dash panel 3.
Abut on the dash panel 3 through a spacer collar 9 longer than the thickness of the clutch pedal bracket 6 and the spacer collar 9 and the flange 2.
In the engine room A, the protruding end of the bolt 10 was fastened and fixed with a nut 11. In the figure, 12 is a reserve tank provided in the clutch master cylinder 1, 13 is a clutch pedal pivotally attached to a pedal bracket 6 by a shaft 14, and is connected to the push rod 5 by a pin 15 (Japanese Utility Model Publication No. 57-189979). reference).

[Problems to be solved by the device]

However, in such a conventional mounting structure,
The clutch master cylinder 1 is inserted from the engine room A side, but as shown in FIG. 7, a strut housing 16 and the like are arranged at a position where the clutch master cylinder 1 faces the engine room A and is adjacent to the clutch master cylinder 1. Then brake masterback 17
Since the work space is small, the work space is small, and the attachment / detachment work is difficult, and the spacer collar 9 is required to prevent the axial force of the fastening bolt from decreasing, resulting in an increase in the number of parts and an increase in cost. Also, especially clutch master cylinder 1
Is heavy, and its desorption work is difficult.

On the other hand, in order to secure the total cylinder length and mounting stroke space of the hydraulic clutch master cylinder 1, in the right-hand drive vehicle, in order to secure a clearance with the engine, the master cylinder mounting surface cannot be advanced, and in the left-hand drive vehicle,
It was difficult to secure the installation space for the double wishbone upper link, and I had to retreat the dash panel.

In addition, the high caster angle for improving maneuverability was also limited due to space limitations.

The present invention has been made in view of such a conventional problem, and aims at improving the workability of attaching and detaching the clutch master cylinder, as well as reducing the cost and improving the sound insulation.

[Means for solving the problem]

In order to achieve such an object, the present invention bulges the mounting portion of the clutch master cylinder 1 of the dash panel 3 that defines the interior of the vehicle compartment B and the engine compartment A toward the vehicle compartment B side and at the same time A through hole 4a larger than the outer shape of the clutch master cylinder 1 is formed in the fitting portion, and the clutch master cylinder 1 can be substantially inserted into the recess of the fitting portion and is fixed to the dash panel 3. 1. The peripheral edge of the base flange 2a of No. 1 is projected, and the screw portion 23 of the stud bolt 22 is attached to the peripheral edge of this through hole 4a.
To the side of the passenger compartment B and fix the stud bolt 22,
The base flange 2a of the clutch master cylinder 1 is brought into contact with the through hole 4a from the vehicle interior side B, and the screw 23 of the stud bolt 22 is attached to the base flange of the clutch master cylinder 1.
2a and the pedal bracket 6 are tightened and fixed with a nut 11 to provide a mounting structure for a hydraulic clutch master cylinder.

[Action]

In order to mount the clutch master cylinder 1, first, it is penetrated from the vehicle interior side B into the through hole 4a of the dash panel 3 and the base flange 2a of the clutch master cylinder 1 is brought into contact with the through hole 4a. Stud bolts on the periphery
The screw part 23 of 22 is projected to the side of the passenger compartment B, and the stud bolt
22 is fixed, then the base flange 2a of the clutch master cylinder 1 and the pedal bracket 6 are inserted into the threaded portion 23 of the stud bolt 22, and these are fastened together with the nut 11.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail by giving the same reference numerals to the same parts as the conventional example.

As shown in FIGS. 1 to 4, the attachment portion of the clutch master cylinder 1 of the dash panel 3 is bulged toward the vehicle interior B by embossing, and the clutch master cylinder 1 is placed in the recess of the attachment portion. Make it almost immersive. A through hole 4a larger than the outer shape of the clutch master cylinder 1 is formed in the attachment portion of the dash panel 3. The peripheral edge of the base flange 2a of the clutch master cylinder 1 fixed to the dash panel 3 is projected.

A stud bolt is provided on the engine room A side of this through hole 4a.
22 is inserted, and the screw portion 23 of the stud bolt 22 is projected toward the vehicle interior B side.

The base portion flange 2a of the clutch master cylinder 1 and the pedal bracket 6 are fixed to the screw portion 23 of the stud bolt 22 with a nut 11.

On the other hand, reserve tank 12 to clutch master cylinder 1
Separated from the main body, it can be connected by a pipe 25.

 Next, a method of assembling this device will be described.

To mount the clutch master cylinder 1, first, penetrate it from the vehicle interior side B into the through hole 4a of the dash panel 3 and immerse the clutch master cylinder 1 in the mounting portion, and then the base flange 2a of the clutch master cylinder 1.
Closes this through hole 4a. Since the screw portion 23 of the stud bolt 22 is projected toward the vehicle interior B side at the periphery of the through hole 4a to fix the stud bolt 22, the stud bolt 22 is fixed.
The base flange 2a of the clutch master cylinder 1 and the pedal bracket 6 are inserted into the screw portion 23 of 22 and they are fastened together with the nut 11.

As described above, the clutch master cylinder 1 can be attached from the passenger compartment B side, and the nut 11 is also mounted in the passenger compartment B side.
Since it can be fastened from the side, it is easy to work and the conventional spacer collar 9 is not required, so that the number of parts can be reduced, the cost can be reduced, and the sound insulation performance is improved.

That is, in this embodiment, the clutch master cylinder 1
Since the vehicle is mounted from the side of the passenger compartment B, the workability of mounting and demounting is improved, the cost is reduced, and the sound insulation is improved. Further, in this embodiment, since the attachment portion of the clutch master cylinder 1 of the dash panel 3 is bulged toward the passenger compartment B, the dash panel 3 is reinforced and the torque wrench 27 is engaged with the nut 11. It is easy to do, the engine room is widened, and the degree of freedom of suspension can be greatly improved, and the degree of freedom of engine room layout can be greatly improved.

In this embodiment, the clutch master cylinder 1 and the pedal bracket 6 are assembled beforehand with the machine screws 26, and the work man-hours are further reduced and rationalized as an integrated body. Further, in this embodiment, the flange 2a is made thicker to substitute for the conventional spacer collar 9, and the flange 2a is further provided with a pressing flange 2c for pressing the dash insulator 7 including the felt 7a and the septum 7b so as to prevent acoustic leakage. It has been prevented.

FIG. 5 shows another embodiment of the present invention in which another holding plate 28 is used in place of the holding flange 2c.

〔effect〕

The effect of claim 1 of the present invention is as follows.

1) Since the clutch master cylinder 1 can be mounted from the passenger compartment B side, the workability of attaching and detaching the clutch master cylinder 1 can be improved and the cost can be reduced.

2) Especially, since the screw portion 23 of the stud bolt 22 is projected toward the vehicle interior B side and the stud bolt 22 is fixed to the periphery of the through hole 4a, the heavy clutch master cylinder 1 can be temporarily placed on the stud bolt 22. There is no need to support it, improving workability.

3) Since the base flange 2a of the clutch master cylinder 1 is fixed to the attachment portion of the dash panel 3, the through hole 4a is completely closed and the sound insulation is improved.

4) Since the mounting portion of the clutch master cylinder 1 of the dash panel 3 is bulged toward the passenger compartment B, the surface rigidity of the dash panel 3 is improved and reinforced, and the torque wrench 27 is attached as shown in the second illustration. It is easy to engage the nut 11.

5) Since the clutch master cylinder 1 is substantially immersed in the recess of its mounting part, the number of protrusions to the engine room is reduced, the engine room can be effectively used (volume ratio is improved), and the degree of suspension freedom is greatly improved. Is possible,
The flexibility of the engine room layout can be greatly improved.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIGS. 2 and 3 are explanatory views taken along the line II in FIG. 1 and II in FIG. 2, respectively.
I-III line sectional view, FIG. 4 is a perspective view of the present invention seen from above, FIG. 5 is a sectional view of another embodiment of the present invention, FIG. 6 is a sectional view of a conventional device, and FIG. FIG. 4 is a cross-sectional view for explaining the conventional problem. 1 ... Clutch master cylinder, 2a ... Base flange, 2c ... Holding flange, 3 ... Dash panel, 4a ...
… Through hole, 6… Pedal bracket, 7… Dash insulator, 11… Nut, 22… Stud bolt, 23
...... Screw part.

Claims (2)

(57) [Scope of utility model registration request] 1. A mounting portion of a clutch master cylinder (1) of a dash panel (3) defining a vehicle compartment (B) and an engine room (A) expands toward the vehicle compartment (B). A through hole (4a) larger than the outer shape of the clutch master cylinder (1) is formed in the mounting portion of the clutch master cylinder (1) so that the clutch master cylinder (1) can be substantially immersed in the recess of the mounting portion. The peripheral portion of the base flange (2a) of the clutch master cylinder (1) fixed to the dash panel (3) is projected, and the screw portion (23) of the stud bolt (22) is provided on the peripheral edge of the through hole (4a). The stud bolt (22) is fixed by projecting to the vehicle interior (B) side, and the base flange (2a) of the clutch master cylinder (1) is brought into contact with the through hole (4a) from the vehicle interior (B) side, In the screw part (23) of this stud bolt (22) Base flange of the latch master cylinder (1) (2a) and the pedal bracket (6)
A hydraulic clutch master cylinder mounting structure in which the nut (11) is tightened and fixed. 2. The mounting structure for a hydraulic clutch master cylinder according to claim 1, wherein the flange (2a) of the clutch master cylinder (1) is connected to a holding flange (2c) for holding the dash insulator (7).